/* CSS Variables */
:root {
    /* Light Theme */
    --bg-primary: #fefefe;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --accent-primary: #e91e63;
    --accent-secondary: #f06292;
    --accent-gradient: linear-gradient(135deg, #e91e63 0%, #f06292 100%);
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(233, 30, 99, 0.3);
    
    /* Cycle Colors */
    --color-menstruation: #e91e63;
    --color-ovulation: #4caf50;
    --color-fertile: #ff9800;
    --color-follicular: #2196f3;
    --color-luteal: #9c27b0;
}

[data-theme="dark"] {
    /* Dark Theme - Maksimalni kontrasti */
    --bg-primary: #000000;
    --bg-secondary: #0f0f0f;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #f5f5f5;
    --text-tertiary: #d0d0d0;
    --accent-primary: #ff6b9d;
    --accent-secondary: #ffa5c7;
    --accent-gradient: linear-gradient(135deg, #ff6b9d 0%, #ffa5c7 100%);
    --border-color: #606060;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.8);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.9);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 1);
    --shadow-glow: 0 0 20px rgba(255, 107, 157, 0.6);
    
    /* Cycle Colors - Maksimalni kontrasti */
    --color-menstruation: #ff1744;
    --color-ovulation: #66bb6a;
    --color-fertile: #ffa726;
    --color-follicular: #42a5f5;
    --color-luteal: #ab47bc;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
}

/* Header */
.app-header {
    background: var(--accent-gradient);
    color: white;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    color: white !important;
    text-decoration: none !important;
}


.theme-icon {
    font-size: 1.2rem;
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    position: sticky;
    top: 60px;
    z-index: 99;
    scrollbar-width: none;
    width: 100%;
    -webkit-overflow-scrolling: touch;
}

.tab-navigation::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex: 1;
    min-width: 100px;
    padding: 1rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    transition: all 0.3s ease;
    font-size: clamp(0.75rem, 2vw, 0.9rem);
}


.tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.tab-icon {
    font-size: 1.5rem;
}

.tab-text {
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 1.5rem;
    padding-bottom: 100px;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Cards */
.card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    height: auto;
    align-self: start;
}


.card-title {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Dashboard */
.dashboard-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    align-items: start;
}

.cycle-status-card {
    grid-column: 1 / -1;
}

.cycle-status-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.cycle-day-display {
    display: flex;
    flex-direction: column;
}

.cycle-day-number {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.cycle-day-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.cycle-phase {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    font-weight: 600;
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.progress-container {
    margin-top: 1rem;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 6px;
    transition: width 0.5s ease;
    box-shadow: var(--shadow-glow);
}

.progress-label {
    text-align: right;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.prediction-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.prediction-item:last-child {
    border-bottom: none;
}

.prediction-label {
    color: var(--text-secondary);
}

.prediction-value {
    font-weight: 600;
    color: var(--accent-primary);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
}

.stat-value {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.symptom-stat-grid {
    display: grid;
    gap: 1rem;
}

.symptom-stat-item {
    display: grid;
    grid-template-columns: 100px 1fr 50px;
    gap: 1rem;
    align-items: center;
}

.symptom-stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.symptom-stat-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.symptom-stat-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.symptom-stat-value {
    text-align: right;
    font-weight: 600;
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.action-btn {
    padding: 1rem;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    min-height: 80px;
}


.action-btn:active {
    transform: translateY(-1px);
}

.action-icon {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

/* Calendar */
.calendar-container {
    max-width: 800px;
    margin: 0 auto;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.calendar-nav-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    border: none;
}


.calendar-month-year {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 600;
    color: var(--text-primary);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.calendar-day-header {
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0.5rem;
    font-size: 0.85rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
}


.calendar-day.other-month {
    opacity: 0.3;
}

.calendar-day.today {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.calendar-day.menstruation {
    background: var(--color-menstruation);
    color: white;
    border-color: var(--color-menstruation);
}

.calendar-day.follicular {
    background: var(--color-follicular);
    color: white;
    border-color: var(--color-follicular);
}

.calendar-day.ovulation {
    background: var(--color-ovulation);
    color: white;
    border-color: var(--color-ovulation);
}

.calendar-day.fertile {
    background: var(--color-fertile);
    color: white;
    border-color: var(--color-fertile);
}

.calendar-day.luteal {
    background: var(--color-luteal);
    color: white;
    border-color: var(--color-luteal);
}

.calendar-legend {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.legend-color.menstruation {
    background: var(--color-menstruation);
}

.legend-color.follicular {
    background: var(--color-follicular);
}

.legend-color.ovulation {
    background: var(--color-ovulation);
}

.legend-color.fertile {
    background: var(--color-fertile);
}

.legend-color.luteal {
    background: var(--color-luteal);
}

.legend-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Symptoms */
.symptoms-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input[type="date"],
.form-group input[type="time"],
.form-group input[type="number"],
.form-group input[type="text"],
.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    pointer-events: auto;
    user-select: text;
}

.form-group input:focus,
.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

/* Osiguraj da su input polja klikabilna */
input[type="date"],
input[type="time"],
input[type="number"],
input[type="text"],
input[type="range"],
input[type="checkbox"] {
    pointer-events: auto !important;
    cursor: pointer;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="time"] {
    cursor: text;
}

.range-input {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-gradient);
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.range-input::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-gradient);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}


.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.symptoms-history {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.symptom-entry {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border-left: 4px solid var(--accent-primary);
}

.symptom-entry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.symptom-entry-date {
    font-weight: 600;
    color: var(--accent-primary);
}

.symptom-entry-summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-style: italic;
}

.symptom-entry-values {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.symptom-entry-value {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}


.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}


.btn-danger {
    background: #f44336;
    color: white;
}


/* Settings */
.settings-container {
    max-width: 600px;
    margin: 0 auto;
}

.data-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Modals */
.modal {
    /* Bootstrap modal već ima svoje stilove, samo dodajemo custom stilove */
    z-index: 1055; /* Bootstrap modal z-index */
}

.modal.show {
    display: block;
}

.modal-backdrop {
    z-index: 1050; /* Bootstrap backdrop z-index */
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

/* Custom modal za kompatibilnost */
.modal.active {
    display: block;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-dialog {
    margin: 1.75rem auto;
}

.modal-dialog-centered {
    display: flex;
    align-items: center;
    min-height: calc(100% - 3.5rem);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2,
.modal-header h5,
.modal-title {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}


.modal-body {
    padding: 1.5rem;
    color: var(--text-primary);
}

/* Osiguraj da su input polja u modalu klikabilna */
.modal .form-control,
.modal input,
.modal textarea,
.modal select {
    pointer-events: auto !important;
    z-index: 1;
    position: relative;
}

/* Survey Modal */
.survey-modal-content {
    max-width: 600px;
}

.survey-progress {
    margin-bottom: 1.5rem;
}

.survey-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.survey-progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

.survey-progress-text {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.survey-question {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.survey-answers {
    margin-bottom: 1.5rem;
    min-height: 200px;
}

.survey-answer-item {
    padding: 1rem;
    margin-bottom: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}


.survey-answer-item.selected {
    border-color: var(--accent-primary);
    background: rgba(233, 30, 99, 0.1);
}

.survey-answer-item input[type="radio"],
.survey-answer-item input[type="checkbox"] {
    margin-right: 0.5rem;
    accent-color: var(--accent-primary);
}

.survey-navigation {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

/* Responsive Design */

/* Tablet and smaller desktop (768px - 1024px) */
@media (max-width: 1024px) {
    .app-container {
        max-width: 100%;
    }
    
    .dashboard-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cycle-status-card {
        grid-column: 1 / -1;
    }
    
    .stat-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet (768px and below) */
@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
        padding-bottom: 100px;
    }

    .dashboard-container {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 1rem;
    }
    
    .card-title {
        font-size: 1.1rem;
    }

    .tab-btn {
        min-width: 80px;
        padding: 0.75rem 0.5rem;
        font-size: 0.85rem;
    }

    .tab-icon {
        font-size: 1.2rem;
    }
    
    .tab-text {
        font-size: 0.75rem;
    }

    .calendar-grid {
        gap: 0.25rem;
    }

    .calendar-day {
        font-size: 0.85rem;
        padding: 0.5rem;
    }
    
    .calendar-header {
        padding: 0.75rem;
    }
    
    .calendar-nav-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .quick-actions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .action-btn {
        padding: 0.75rem;
        min-height: 70px;
    }
    
    .action-icon {
        font-size: 1.3rem;
    }
    
    .action-text {
        font-size: 0.85rem;
    }

    .symptom-stat-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .symptom-stat-label {
        text-align: left;
    }

    .symptom-stat-value {
        text-align: left;
    }
    
    .stat-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }
    
    .stat-item {
        padding: 0.75rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .cycle-day-number {
        font-size: 3rem;
    }
    
    .cycle-phase {
        font-size: 1rem;
        padding: 0.4rem 0.8rem;
    }
    
    .prediction-item {
        padding: 0.5rem 0;
        font-size: 0.9rem;
    }
    
    .form-group,
    .mb-3 {
        margin-bottom: 1rem;
    }
    
    .checkbox-group {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-dialog {
        margin: 0.5rem;
    }
    
    .modal-content {
        max-width: 100%;
    }
    
    .modal-header {
        padding: 1rem;
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .survey-navigation {
        flex-direction: column;
    }
    
    .survey-navigation .btn {
        width: 100%;
    }
    
    .data-actions {
        flex-direction: column;
    }
    
    .data-actions .btn {
        width: 100%;
    }
    
    .cycle-info-content {
        font-size: 0.9rem;
    }
    
    .phase-item {
        padding: 0.75rem;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    .app-header {
        padding: 0.75rem 1rem;
    }
    
    .app-title {
        font-size: 1.3rem;
    }
    
    .theme-toggle {
        width: 40px;
        height: 40px;
    }

    .tab-navigation {
        top: 50px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        min-width: 70px;
        padding: 0.5rem 0.25rem;
        flex-shrink: 0;
    }

    .tab-icon {
        font-size: 1rem;
    }
    
    .tab-text {
        font-size: 0.65rem;
    }
    
    .main-content {
        padding: 0.75rem;
        padding-bottom: 120px;
    }
    
    .card {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .card-title {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }

    .modal-dialog {
        margin: 0.25rem;
    }
    
    .modal-content {
        width: 100%;
        max-height: 95vh;
        border-radius: 12px;
    }
    
    .modal-header {
        padding: 0.75rem;
    }
    
    .modal-header h5 {
        font-size: 1rem;
    }
    
    .modal-body {
        padding: 0.75rem;
    }

    .quick-actions-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .action-btn {
        padding: 0.75rem;
        min-height: 60px;
    }
    
    .cycle-day-number {
        font-size: 2.5rem;
    }
    
    .cycle-day-label {
        font-size: 0.75rem;
    }
    
    .cycle-phase {
        font-size: 0.9rem;
        padding: 0.3rem 0.6rem;
    }
    
    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .stat-value {
        font-size: 1.3rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .prediction-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        padding: 0.5rem 0;
    }
    
    .prediction-label {
        font-size: 0.85rem;
    }
    
    .prediction-value {
        font-size: 0.9rem;
    }
    
    .calendar-day {
        font-size: 0.75rem;
        padding: 0.25rem;
        min-height: 35px;
    }
    
    .calendar-day-header {
        font-size: 0.7rem;
        padding: 0.25rem;
    }
    
    .calendar-legend {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.75rem;
    }
    
    .legend-item {
        font-size: 0.85rem;
    }
    
    .form-control,
    .form-select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.6rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .symptom-stat-item {
        gap: 0.25rem;
    }
    
    .symptom-stat-label {
        font-size: 0.85rem;
    }
    
    .symptom-stat-value {
        font-size: 0.85rem;
    }
    
    .cycle-info-content {
        font-size: 0.85rem;
    }
    
    .phase-item {
        padding: 0.5rem;
    }
    
    .phase-color {
        width: 16px;
        height: 16px;
    }
    
    .alert {
        padding: 0.75rem;
        font-size: 0.85rem;
    }
    
    .survey-question {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .survey-answer-item {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
}

/* Extra small mobile (320px and below) */
@media (max-width: 320px) {
    .app-header {
        padding: 0.5rem 0.75rem;
    }
    
    .app-title {
        font-size: 1.1rem;
    }
    
    .tab-btn {
        min-width: 60px;
        padding: 0.4rem 0.15rem;
    }
    
    .tab-text {
        display: none;
    }
    
    .tab-icon {
        font-size: 1.1rem;
    }
    
    .main-content {
        padding: 0.5rem;
    }
    
    .card {
        padding: 0.5rem;
    }
    
    .cycle-day-number {
        font-size: 2rem;
    }
    
    .stat-grid {
        grid-template-columns: 1fr;
    }
}

/* Landscape orientation for mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .app-header {
        padding: 0.5rem 1rem;
    }
    
    .tab-navigation {
        top: 45px;
    }
    
    .main-content {
        padding: 0.75rem;
        padding-bottom: 80px;
    }
    
    .calendar-day {
        min-height: 40px;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .action-btn,
    .tab-btn,
    .btn,
    .calendar-nav-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .checkbox-label,
    .survey-answer-item {
        min-height: 44px;
    }
    
    .range-input::-webkit-slider-thumb {
        width: 24px;
        height: 24px;
    }
    
    .range-input::-moz-range-thumb {
        width: 24px;
        height: 24px;
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Cycle Info Card */
.cycle-info-card {
    grid-column: 1 / -1;
}

.cycle-info-content {
    animation: fadeIn 0.3s ease;
}

.phase-item {
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border-left: 4px solid transparent;
}

.phase-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    display: inline-block;
    flex-shrink: 0;
}

.phase-color.menstruation-color {
    background: var(--color-menstruation);
}

.phase-color.follicular-color {
    background: var(--color-follicular);
}

.phase-color.ovulation-color {
    background: var(--color-ovulation);
}

.phase-color.fertile-color {
    background: var(--color-fertile);
}

.phase-color.luteal-color {
    background: var(--color-luteal);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 80px;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 400px;
    width: calc(100% - 2rem);
    pointer-events: none;
}

.toast {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
    pointer-events: auto;
    min-width: 300px;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-success {
    border-left-color: #4caf50;
    background: var(--bg-secondary);
}

.toast-error {
    border-left-color: #f44336;
    background: var(--bg-secondary);
}

.toast-warning {
    border-left-color: #ff9800;
    background: var(--bg-secondary);
}

.toast-info {
    border-left-color: #2196f3;
    background: var(--bg-secondary);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.toast-content i {
    font-size: 1.25rem;
}

.toast-success .toast-content i {
    color: #4caf50;
}

.toast-error .toast-content i {
    color: #f44336;
}

.toast-warning .toast-content i {
    color: #ff9800;
}

.toast-info .toast-content i {
    color: #2196f3;
}

.toast-message {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.4;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}


@media (max-width: 768px) {
    .toast-container {
        top: 60px;
        right: 0.5rem;
        left: 0.5rem;
        max-width: 100%;
        width: calc(100% - 1rem);
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}


/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--border-color) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: 4px;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}


/* Enhanced Button Animations */
.btn {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* Smooth Transitions - Optimized for mobile */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Disable transitions on mobile for better performance */
@media (hover: none) and (pointer: coarse) {
    * {
        transition: none !important;
        animation: none !important;
    }
    
    .card,
    .symptom-entry {
        animation: fadeIn 0.2s ease !important;
    }
}

/* Enhanced Colors and Contrast */
:root {
    --accent-primary: #e91e63;
    --accent-secondary: #c2185b;
    --accent-gradient: linear-gradient(135deg, #e91e63 0%, #c2185b 100%);
    
    /* Better contrast for accessibility */
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    
    /* Enhanced shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] {
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
}

/* Typography Improvements */
.card-title {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.stat-value {
    font-weight: 700;
    letter-spacing: -0.03em;
}

/* Icon Enhancements */
.action-icon,
.tab-icon {
    transition: transform 0.3s ease;
}


/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card,
.symptom-entry {
    animation: fadeIn 0.4s ease;
}

/* ============================================
   MASSIVE ANIMATIONS COLLECTION
   ============================================ */

/* Fade In Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale Animations */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes scaleOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.8);
    }
}

@keyframes scaleUp {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.05);
    }
}

@keyframes scaleDown {
    from {
        transform: scale(1.05);
    }
    to {
        transform: scale(1);
    }
}

/* Slide Animations */
@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutUp {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(-100%);
        opacity: 0;
    }
}

@keyframes slideOutDown {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(100%);
        opacity: 0;
    }
}

/* Rotate Animations */
@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.8);
    }
    to {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

@keyframes rotateOut {
    from {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
    to {
        opacity: 0;
        transform: rotate(180deg) scale(0.8);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Bounce Animations */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes bounceOut {
    0% {
        transform: scale(1);
    }
    25% {
        transform: scale(0.95);
    }
    50% {
        opacity: 1;
        transform: scale(1.02);
    }
    100% {
        opacity: 0;
        transform: scale(0.3);
    }
}

/* Shake Animation */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-10px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(10px);
    }
}

/* Wobble Animation */
@keyframes wobble {
    0% {
        transform: translateX(0%);
    }
    15% {
        transform: translateX(-25px) rotate(-5deg);
    }
    30% {
        transform: translateX(20px) rotate(3deg);
    }
    45% {
        transform: translateX(-15px) rotate(-3deg);
    }
    60% {
        transform: translateX(10px) rotate(2deg);
    }
    75% {
        transform: translateX(-5px) rotate(-1deg);
    }
    100% {
        transform: translateX(0%);
    }
}

/* Flip Animations */
@keyframes flipInX {
    from {
        transform: perspective(400px) rotateX(90deg);
        opacity: 0;
    }
    40% {
        transform: perspective(400px) rotateX(-20deg);
    }
    60% {
        transform: perspective(400px) rotateX(10deg);
        opacity: 1;
    }
    80% {
        transform: perspective(400px) rotateX(-5deg);
    }
    to {
        transform: perspective(400px) rotateX(0deg);
        opacity: 1;
    }
}

@keyframes flipInY {
    from {
        transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    40% {
        transform: perspective(400px) rotateY(-20deg);
    }
    60% {
        transform: perspective(400px) rotateY(10deg);
        opacity: 1;
    }
    80% {
        transform: perspective(400px) rotateY(-5deg);
    }
    to {
        transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}

/* Zoom Animations */
@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes zoomOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 1;
    }
    to {
        opacity: 0;
        transform: scale(0.3);
    }
}

/* Glow Animation */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px var(--accent-primary), 0 0 10px var(--accent-primary), 0 0 15px var(--accent-primary);
    }
    50% {
        box-shadow: 0 0 10px var(--accent-primary), 0 0 20px var(--accent-primary), 0 0 30px var(--accent-primary);
    }
}

/* Pulse Animation (Enhanced) */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(233, 30, 99, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(233, 30, 99, 0);
    }
}

/* Ripple Animation */
@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* Shimmer Animation */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Progress Bar Animation */
@keyframes progressBar {
    from {
        width: 0%;
    }
}

/* Draw Line Animation */
@keyframes drawLine {
    from {
        stroke-dashoffset: 1000;
    }
    to {
        stroke-dashoffset: 0;
    }
}

/* Float Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Swing Animation */
@keyframes swing {
    20% {
        transform: rotate(15deg);
    }
    40% {
        transform: rotate(-10deg);
    }
    60% {
        transform: rotate(5deg);
    }
    80% {
        transform: rotate(-5deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

/* Tada Animation */
@keyframes tada {
    0% {
        transform: scale(1);
    }
    10%, 20% {
        transform: scale(0.9) rotate(-3deg);
    }
    30%, 50%, 70%, 90% {
        transform: scale(1.1) rotate(3deg);
    }
    40%, 60%, 80% {
        transform: scale(1.1) rotate(-3deg);
    }
    100% {
        transform: scale(1) rotate(0);
    }
}

/* Heartbeat Animation */
@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(0.9);
    }
    20%, 40%, 60%, 80% {
        transform: scale(1.1);
    }
    50%, 70% {
        transform: scale(1.05);
    }
}

/* ============================================
   APPLY ANIMATIONS TO ELEMENTS
   ============================================ */

/* Cards with staggered animation */
.card {
    animation: fadeInUp 0.5s ease forwards;
    opacity: 0;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

/* Action Buttons */
.action-btn {
    animation: scaleIn 0.4s ease forwards;
    opacity: 0;
}

.action-btn:nth-child(1) { animation-delay: 0.1s; }
.action-btn:nth-child(2) { animation-delay: 0.2s; }
.action-btn:nth-child(3) { animation-delay: 0.3s; }
.action-btn:nth-child(4) { animation-delay: 0.4s; }


.action-btn:active {
    animation: scaleDown 0.2s ease;
}

/* Tab Buttons */
.tab-btn {
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(233, 30, 99, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}


.tab-btn.active {
    animation: slideInDown 0.3s ease;
}

/* Calendar Days */
.calendar-day {
    animation: fadeIn 0.3s ease forwards;
    opacity: 0;
}


.calendar-day.today {
    animation: pulseGlow 2s ease infinite;
}

/* Symptom Entries */
.symptom-entry {
    animation: slideInLeft 0.4s ease forwards;
    opacity: 0;
}

.symptom-entry:nth-child(1) { animation-delay: 0.1s; }
.symptom-entry:nth-child(2) { animation-delay: 0.2s; }
.symptom-entry:nth-child(3) { animation-delay: 0.3s; }
.symptom-entry:nth-child(4) { animation-delay: 0.4s; }
.symptom-entry:nth-child(5) { animation-delay: 0.5s; }




/* Stat Items */
.stat-item {
    animation: zoomIn 0.5s ease forwards;
    opacity: 0;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }
.stat-item:nth-child(5) { animation-delay: 0.5s; }
.stat-item:nth-child(6) { animation-delay: 0.6s; }


/* Progress Bar */
.progress-fill {
    animation: progressBar 1s ease-out;
}

/* Cycle Day Number */
.cycle-day-number {
    animation: bounceIn 0.8s ease;
}


/* Cycle Phase Badge */
.cycle-phase {
    animation: flipInY 0.6s ease;
}


/* Prediction Items */
.prediction-item {
    animation: fadeInRight 0.4s ease forwards;
    opacity: 0;
}

.prediction-item:nth-child(1) { animation-delay: 0.1s; }
.prediction-item:nth-child(2) { animation-delay: 0.2s; }
.prediction-item:nth-child(3) { animation-delay: 0.3s; }


/* Modal Animations */
.modal.show .modal-dialog {
    animation: zoomIn 0.3s ease;
}

.modal.show .modal-content {
    animation: slideInUp 0.4s ease;
}

.modal.fade .modal-dialog {
    animation: zoomOut 0.3s ease;
}

/* Survey Answer Items */
.survey-answer-item {
    animation: fadeInLeft 0.3s ease forwards;
    opacity: 0;
}

.survey-answer-item:nth-child(1) { animation-delay: 0.1s; }
.survey-answer-item:nth-child(2) { animation-delay: 0.2s; }
.survey-answer-item:nth-child(3) { animation-delay: 0.3s; }
.survey-answer-item:nth-child(4) { animation-delay: 0.4s; }
.survey-answer-item:nth-child(5) { animation-delay: 0.5s; }


.survey-answer-item.selected {
    animation: bounceIn 0.5s ease;
}

/* Toast Animations (Enhanced) */
.toast {
    animation: slideInRight 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
    animation: slideInRight 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Chart Container */
.chart-container {
    animation: fadeIn 0.6s ease;
}

.chart-container canvas {
    animation: drawLine 2s ease-out;
}

/* Calendar Navigation Buttons */
.calendar-nav-btn {
    transition: all 0.3s ease;
}


.calendar-nav-btn:active {
    animation: scaleDown 0.2s ease;
}

/* Form Inputs */
.form-control:focus,
.form-select:focus,
input:focus,
textarea:focus {
    animation: glow 1.5s ease infinite;
}

/* Checkbox Labels */

.checkbox-label input:checked + span {
    animation: bounceIn 0.4s ease;
}

/* Range Input Thumb */

/* Badge Animations */
.badge {
    animation: scaleIn 0.3s ease;
}


/* Icon Animations */
.action-icon,
.tab-icon {
    transition: transform 0.3s ease;
}


/* Empty State Icons */
.empty-icon {
    animation: float 3s ease-in-out infinite;
}


/* Loading Spinner (Enhanced) */
.loading-spinner {
    animation: spin 0.8s linear infinite, pulse 1.5s ease infinite;
}

/* Skeleton (Enhanced) */
.skeleton {
    animation: shimmer 2s linear infinite;
}

/* Phase Items */
.phase-item {
    animation: fadeInLeft 0.4s ease forwards;
    opacity: 0;
}

.phase-item:nth-child(1) { animation-delay: 0.1s; }
.phase-item:nth-child(2) { animation-delay: 0.2s; }
.phase-item:nth-child(3) { animation-delay: 0.3s; }
.phase-item:nth-child(4) { animation-delay: 0.4s; }
.phase-item:nth-child(5) { animation-delay: 0.5s; }


/* Chart Tabs */
.chart-tab {
    transition: all 0.3s ease;
}


.chart-tab.active {
    animation: bounceIn 0.5s ease;
}

/* Delete Buttons */

/* Alert Animations */
.alert {
    animation: slideInDown 0.4s ease;
}


/* Button Ripple Effect */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::after {
    width: 300px;
    height: 300px;
    animation: ripple 0.6s ease;
}

/* Smooth Page Transitions */
.tab-content {
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    animation: fadeIn 0.3s ease;
}

/* Calendar Grid Stagger */
.calendar-grid .calendar-day {
    animation: fadeIn 0.2s ease forwards;
}

.calendar-grid .calendar-day:nth-child(1) { animation-delay: 0.01s; }
.calendar-grid .calendar-day:nth-child(2) { animation-delay: 0.02s; }
.calendar-grid .calendar-day:nth-child(3) { animation-delay: 0.03s; }
.calendar-grid .calendar-day:nth-child(4) { animation-delay: 0.04s; }
.calendar-grid .calendar-day:nth-child(5) { animation-delay: 0.05s; }
.calendar-grid .calendar-day:nth-child(6) { animation-delay: 0.06s; }
.calendar-grid .calendar-day:nth-child(7) { animation-delay: 0.07s; }

/* Day Options Modal */
#dayOptionsModal .modal-content {
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

#dayOptionsModal .modal-header {
    background: var(--accent-gradient);
    color: white;
    border-bottom: none;
    border-radius: 16px 16px 0 0;
    padding: 1.25rem 1.5rem;
}

#dayOptionsModal .modal-header .modal-title {
    color: white;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
}

#dayOptionsModal .modal-header .modal-title i {
    font-size: 1.3rem;
}

#dayOptionsModal .modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.9;
}


#dayOptionsModal .modal-body {
    padding: 1.5rem;
    background: var(--bg-secondary);
}

.day-options-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.day-option-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.day-option-btn::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--accent-primary);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.day-option-btn i {
    font-size: 1.2rem;
    width: 28px;
    text-align: center;
    color: var(--accent-primary);
    transition: all 0.3s ease;
}

.day-option-btn span {
    flex: 1;
    color: var(--text-primary);
}

.day-option-btn[data-action="start-cycle"] i {
    color: #4caf50;
}

.day-option-btn[data-action="end-cycle"] i {
    color: #f44336;
}

.day-option-btn[data-action="continue-cycle"] i {
    color: #ff9800;
}

.day-option-btn[data-action="add-symptoms"] i {
    color: #2196f3;
}

.day-option-btn[data-action="start-survey"] i {
    color: #9c27b0;
}

/* Calendar Day Cursor */
.calendar-day {
    cursor: pointer;
}


/* Dark Mode - Poboljšani kontrasti za sve elemente */
[data-theme="dark"] .card {
    border: 1px solid #505050;
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .card-title {
    color: #ffffff;
    font-weight: 800;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .form-group label,
[data-theme="dark"] .form-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .form-check-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] #settings .form-check-label,
[data-theme="dark"] .settings-container .form-check-label,
[data-theme="dark"] .notifications-card .form-check-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] #symptoms label,
[data-theme="dark"] .symptoms-container label,
[data-theme="dark"] .symptom-form-card label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] #symptoms .form-label,
[data-theme="dark"] .symptoms-container .form-label,
[data-theme="dark"] .symptom-form-card .form-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .form-control,
[data-theme="dark"] input[type="date"],
[data-theme="dark"] input[type="time"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="text"],
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: #1a1a1a;
    border: 2px solid #707070;
    color: #ffffff;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
    border-color: var(--accent-primary);
    background: #1a1a1a;
    box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.3);
    color: #ffffff;
    outline: none;
}

[data-theme="dark"] .modal-content {
    background: #0f0f0f;
    border: 2px solid #707070;
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .modal-header {
    border-bottom: 2px solid #707070;
    background: #0f0f0f;
}

[data-theme="dark"] .modal-header .modal-title {
    color: #ffffff;
    font-weight: 800;
}

[data-theme="dark"] .modal-body {
    background: #0f0f0f;
    color: #ffffff;
}

[data-theme="dark"] .prediction-label {
    color: #f5f5f5;
    font-weight: 500;
}

[data-theme="dark"] .prediction-value {
    color: #ff6b9d;
    font-weight: 800;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .stat-item {
    background: #1a1a1a;
    border: 2px solid #707070;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .stat-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .stat-value {
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .symptom-stat-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .symptom-stat-value {
    color: #ff6b9d;
    font-weight: 800;
}

[data-theme="dark"] .symptom-stat-bar {
    background: #1a1a1a;
    border: 1px solid #606060;
}

[data-theme="dark"] .symptom-entry {
    background: #1a1a1a;
    border-left: 4px solid #ff6b9d;
    border: 2px solid #606060;
    border-left: 4px solid #ff6b9d;
}

[data-theme="dark"] .symptom-entry-date {
    color: #ff6b9d;
    font-weight: 800;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .symptom-entry-value {
    color: #f5f5f5;
    font-weight: 500;
}

[data-theme="dark"] .symptom-entry-summary {
    color: #d0d0d0;
}

[data-theme="dark"] .btn-secondary {
    background: #1a1a1a;
    color: #ffffff;
    border: 2px solid #707070;
    font-weight: 600;
}

[data-theme="dark"] .btn-secondary:active {
    background: #2a2a2a;
    border-color: #808080;
    color: #ffffff;
}

[data-theme="dark"] .action-btn {
    box-shadow: var(--shadow-lg);
    border: 2px solid rgba(255, 107, 157, 0.5);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .survey-answer-item {
    background: #1a1a1a;
    border: 2px solid #606060;
    color: #ffffff;
    font-weight: 500;
}

[data-theme="dark"] .survey-answer-item.selected {
    background: rgba(255, 107, 157, 0.3);
    border: 2px solid #ff6b9d;
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 0 10px rgba(255, 107, 157, 0.4);
}

[data-theme="dark"] .toast {
    background: #0f0f0f;
    border: 2px solid #707070;
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .toast-message {
    color: #ffffff;
    font-weight: 500;
}

[data-theme="dark"] .legend-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .calendar-legend {
    background: #0f0f0f;
    border: 2px solid #707070;
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .calendar-header {
    background: #0f0f0f;
    border: 2px solid #707070;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .calendar-month-year {
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .calendar-day-header {
    color: #f5f5f5;
    font-weight: 700;
}

[data-theme="dark"] .calendar-day {
    background: #1a1a1a;
    border: 2px solid #606060;
    color: #ffffff;
    font-weight: 600;
}

[data-theme="dark"] .calendar-day.other-month {
    opacity: 0.5;
    background: #000000;
    border-color: #404040;
}

[data-theme="dark"] .calendar-day.today {
    border: 3px solid #ff6b9d;
    box-shadow: 0 0 0 2px #ff6b9d, 0 0 15px rgba(255, 107, 157, 0.5);
    background: #1a1a1a;
    color: #ffffff;
    font-weight: 800;
}

/* Dark mode - Faze ciklusa moraju biti vidljive */
[data-theme="dark"] .calendar-day.menstruation {
    background: var(--color-menstruation) !important;
    color: white !important;
    border-color: var(--color-menstruation) !important;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(255, 23, 68, 0.4);
}

[data-theme="dark"] .calendar-day.follicular {
    background: var(--color-follicular) !important;
    color: white !important;
    border-color: var(--color-follicular) !important;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(66, 165, 245, 0.4);
}

[data-theme="dark"] .calendar-day.ovulation {
    background: var(--color-ovulation) !important;
    color: white !important;
    border-color: var(--color-ovulation) !important;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(102, 187, 106, 0.4);
}

[data-theme="dark"] .calendar-day.fertile {
    background: var(--color-fertile) !important;
    color: white !important;
    border-color: var(--color-fertile) !important;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(255, 167, 38, 0.4);
}

[data-theme="dark"] .calendar-day.luteal {
    background: var(--color-luteal) !important;
    color: white !important;
    border-color: var(--color-luteal) !important;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(171, 71, 188, 0.4);
}

/* Dark mode - Danas sa fazom ciklusa */
[data-theme="dark"] .calendar-day.today.menstruation,
[data-theme="dark"] .calendar-day.today.follicular,
[data-theme="dark"] .calendar-day.today.ovulation,
[data-theme="dark"] .calendar-day.today.fertile,
[data-theme="dark"] .calendar-day.today.luteal {
    border: 3px solid #ff6b9d !important;
    box-shadow: 0 0 0 2px #ff6b9d, 0 0 15px rgba(255, 107, 157, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3) !important;
    font-weight: 800;
}

[data-theme="dark"] .day-option-btn {
    background: #1a1a1a;
    border: 2px solid #707070;
    color: #ffffff;
    font-weight: 600;
}

[data-theme="dark"] .day-option-btn span {
    color: #ffffff;
    font-weight: 600;
}

[data-theme="dark"] .day-option-btn i {
    color: var(--accent-primary);
}

[data-theme="dark"] .cycle-day-number {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .cycle-day-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .cycle-phase {
    background: #1a1a1a;
    border: 2px solid #707070;
    color: #ff6b9d;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .progress-bar {
    background: #1a1a1a;
    border: 2px solid #606060;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .progress-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .checkbox-label {
    background: #1a1a1a;
    border: 2px solid #606060;
    font-weight: 500;
}

[data-theme="dark"] .checkbox-label span {
    color: #f5f5f5;
}

[data-theme="dark"] .checkbox-label input:checked + span {
    color: #ffffff;
    font-weight: 700;
}

[data-theme="dark"] .checkbox-label:hover {
    background: #2a2a2a;
    border-color: #707070;
}

[data-theme="dark"] .alert {
    background: #1a1a1a;
    border: 2px solid #707070;
    color: #ffffff;
    font-weight: 500;
}

[data-theme="dark"] .alert-info {
    background: rgba(33, 150, 243, 0.25);
    border: 2px solid #42a5f5;
    color: #90caf9;
    font-weight: 600;
}

[data-theme="dark"] .alert-success {
    background: rgba(76, 175, 80, 0.25);
    border: 2px solid #66bb6a;
    color: #81c784;
    font-weight: 600;
}

[data-theme="dark"] .alert-warning {
    background: rgba(255, 152, 0, 0.25);
    border: 2px solid #ffa726;
    color: #ffb74d;
    font-weight: 600;
}

[data-theme="dark"] .alert-danger {
    background: rgba(244, 67, 54, 0.25);
    border: 2px solid #ef5350;
    color: #e57373;
    font-weight: 600;
}

[data-theme="dark"] .text-muted {
    color: #d0d0d0 !important;
    font-weight: 500;
}

[data-theme="dark"] .phase-item {
    background: #1a1a1a;
    border: 2px solid #606060;
    border-left: 4px solid transparent;
}

[data-theme="dark"] .phase-item strong {
    color: #ffffff;
    font-weight: 800;
}

[data-theme="dark"] .phase-item p {
    color: #f5f5f5;
}

[data-theme="dark"] .tab-btn {
    color: #f5f5f5;
    font-weight: 500;
}

[data-theme="dark"] .tab-btn.active {
    color: #ff6b9d;
    background: #1a1a1a;
    font-weight: 700;
    border-bottom: 3px solid #ff6b9d;
}

[data-theme="dark"] .range-input {
    background: #1a1a1a;
    border: 1px solid #606060;
}

[data-theme="dark"] .range-input::-webkit-slider-thumb {
    background: var(--accent-gradient);
    box-shadow: 0 0 10px rgba(255, 107, 157, 0.6);
    border: 2px solid #ffffff;
}

[data-theme="dark"] .symptom-stat-bar {
    background: #1a1a1a;
    border: 2px solid #606060;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .chart-container {
    background: #1a1a1a;
    border: 2px solid #606060;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .chart-tab {
    background: #1a1a1a;
    border: 2px solid #707070;
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .chart-tab.active {
    background: var(--accent-gradient);
    color: #ffffff;
    border: 2px solid #ff6b9d;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 10px rgba(255, 107, 157, 0.4);
}

[data-theme="dark"] .empty-state {
    color: #f5f5f5;
}

[data-theme="dark"] .empty-message {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .empty-icon {
    opacity: 0.8;
}

[data-theme="dark"] .cycle-phases-card {
    background: #0f0f0f;
    border: 2px solid #707070;
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .cycle-phases-card .card-title {
    color: #ffffff;
    font-weight: 800;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .cycle-day-label {
    color: #f5f5f5;
    font-weight: 600;
}

[data-theme="dark"] .calendar-day-header {
    color: #f5f5f5;
    font-weight: 700;
}

[data-theme="dark"] .cycle-info-content {
    color: #ffffff;
}

[data-theme="dark"] .cycle-info-content h5 {
    color: #ffffff;
    font-weight: 800;
}

[data-theme="dark"] .cycle-info-content li {
    color: #f5f5f5;
}

[data-theme="dark"] .cycle-info-content strong {
    color: #ffffff;
    font-weight: 800;
}

/* Osiguraj da dark mode stilovi važe na svim uređajima */
@media (max-width: 1024px) {
    [data-theme="dark"] .form-group label,
    [data-theme="dark"] .form-label,
    [data-theme="dark"] .form-check-label {
        color: #f5f5f5 !important;
        font-weight: 600 !important;
    }
}

@media (max-width: 768px) {
    [data-theme="dark"] .form-group label,
    [data-theme="dark"] .form-label,
    [data-theme="dark"] .form-check-label {
        color: #f5f5f5 !important;
        font-weight: 600 !important;
    }
    
    [data-theme="dark"] .tab-btn {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active {
        color: #ff6b9d !important;
        background: #1a1a1a !important;
    }
    
    [data-theme="dark"] .tab-text {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-icon {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active .tab-text,
    [data-theme="dark"] .tab-btn.active .tab-icon {
        color: #ff6b9d !important;
    }
    
    [data-theme="dark"] #symptoms,
    [data-theme="dark"] #settings {
        color: #ffffff !important;
    }
    
    [data-theme="dark"] #symptoms .card-title,
    [data-theme="dark"] #settings .card-title {
        color: #ffffff !important;
    }
    
    [data-theme="dark"] #symptoms p,
    [data-theme="dark"] #settings p,
    [data-theme="dark"] #symptoms span,
    [data-theme="dark"] #settings span {
        color: #f5f5f5 !important;
    }
}

@media (max-width: 480px) {
    [data-theme="dark"] .form-group label,
    [data-theme="dark"] .form-label,
    [data-theme="dark"] .form-check-label {
        color: #f5f5f5 !important;
        font-weight: 600 !important;
    }
    
    [data-theme="dark"] .tab-btn {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active {
        color: #ff6b9d !important;
        background: #1a1a1a !important;
    }
    
    [data-theme="dark"] .tab-text {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-icon {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active .tab-text,
    [data-theme="dark"] .tab-btn.active .tab-icon {
        color: #ff6b9d !important;
    }
    
    [data-theme="dark"] #symptoms,
    [data-theme="dark"] #settings {
        color: #ffffff !important;
    }
    
    [data-theme="dark"] #symptoms .card-title,
    [data-theme="dark"] #settings .card-title {
        color: #ffffff !important;
    }
    
    [data-theme="dark"] #symptoms p,
    [data-theme="dark"] #settings p,
    [data-theme="dark"] #symptoms span,
    [data-theme="dark"] #settings span {
        color: #f5f5f5 !important;
    }
}

@media (max-width: 320px) {
    [data-theme="dark"] .form-group label,
    [data-theme="dark"] .form-label,
    [data-theme="dark"] .form-check-label {
        color: #f5f5f5 !important;
        font-weight: 600 !important;
    }
    
    [data-theme="dark"] .tab-btn {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active {
        color: #ff6b9d !important;
        background: #1a1a1a !important;
    }
    
    [data-theme="dark"] .tab-text {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-icon {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active .tab-text,
    [data-theme="dark"] .tab-btn.active .tab-icon {
        color: #ff6b9d !important;
    }
}

@media (max-width: 768px) and (orientation: landscape) {
    [data-theme="dark"] .form-group label,
    [data-theme="dark"] .form-label,
    [data-theme="dark"] .form-check-label {
        color: #f5f5f5 !important;
        font-weight: 600 !important;
    }
    
    [data-theme="dark"] .tab-btn {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active {
        color: #ff6b9d !important;
        background: #1a1a1a !important;
    }
    
    [data-theme="dark"] .tab-text {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-icon {
        color: #f5f5f5 !important;
    }
    
    [data-theme="dark"] .tab-btn.active .tab-text,
    [data-theme="dark"] .tab-btn.active .tab-icon {
        color: #ff6b9d !important;
    }
}

@media (hover: none) and (pointer: coarse) {
    [data-theme="dark"] .form-group label,
    [data-theme="dark"] .form-label,
    [data-theme="dark"] .form-check-label {
        color: #f5f5f5 !important;
        font-weight: 600 !important;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}