/* Base Styles and Variables */
:root {
    /* Color Palette */
    --color-dark-blue-1: #1A1A2E;
    --color-dark-blue-2: #16213E;
    --color-dark-blue-3: #0F3460;
    --color-accent: #E94560;
    --color-white: #FFFFFF;
    
    /* Light Theme Colors */
    --bg-primary: #f5f5f7;
    --bg-secondary: var(--color-white);
    --text-primary: #333;
    --text-secondary: #666;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --accent-color: var(--color-accent);
    --accent-dark: #d13c55;
    --highlight: var(--color-dark-blue-3);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Font Sizes */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-md: 1rem;
    --font-lg: 1.25rem;
    --font-xl: 1.5rem;
    --font-xxl: 2rem;
}

/* Dark Theme */
.dark-theme {
    --bg-primary: var(--color-dark-blue-1);
    --bg-secondary: var(--color-dark-blue-2);
    --text-primary: var(--color-white);
    --text-secondary: #b0b0b0;
    --border-color: var(--color-dark-blue-3);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --highlight: var(--color-accent);
}

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

html, body {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
    display: flex;
    flex-direction: column;
}

/* Skeuomorphic Elements */
.card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px var(--shadow-color), 
                0 0 1px rgba(0, 0, 0, 0.1);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color),
                0 0 1px rgba(0, 0, 0, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: var(--font-md);
    text-align: center;
    gap: var(--space-sm);
}

.btn:active {
    transform: translateY(2px);
}

.btn-primary {
    background: linear-gradient(to bottom, var(--accent-color), var(--accent-dark));
    color: var(--color-white);
    box-shadow: 0 2px 4px rgba(233, 69, 96, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(to bottom, #f04b67, var(--accent-color));
    box-shadow: 0 3px 6px rgba(233, 69, 96, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: linear-gradient(to bottom, #f8f8f8, #eaeaea);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px var(--shadow-color),
                inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.dark-theme .btn-secondary {
    background: linear-gradient(to bottom, #2a2a45, #222440);
    color: var(--text-primary);
    border: 1px solid var(--color-dark-blue-3);
}

.btn-secondary:hover {
    background: linear-gradient(to bottom, #ffffff, #f0f0f0);
    box-shadow: 0 3px 6px var(--shadow-color),
                inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.dark-theme .btn-secondary:hover {
    background: linear-gradient(to bottom, #30304f, #282848);
}

.btn-danger {
    background: linear-gradient(to bottom, #ff5a5a, #e04040);
    color: var(--color-white);
    box-shadow: 0 2px 4px rgba(224, 64, 64, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-danger:hover {
    background: linear-gradient(to bottom, #ff6e6e, #ff5a5a);
    box-shadow: 0 3px 6px rgba(224, 64, 64, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-icon {
    padding: var(--space-sm);
    border-radius: 50%;
    width: 36px;
    height: 36px;
}

/* App Container Structure */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    background-color: var(--bg-primary);
}

.app-header {
    padding: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    box-shadow: 0 2px 4px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.app-header h1 {
    color: var(--accent-color);
    font-size: var(--font-xl);
    font-weight: 700;
}

.app-content {
    flex: 1;
    padding: var(--space-md);
    overflow-y: auto;
    padding-bottom: 80px; /* Space for nav */
}

.app-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    background-color: var(--bg-secondary);
    box-shadow: 0 -2px 10px var(--shadow-color);
    padding: var(--space-sm) 0;
    z-index: 100;
}

.app-footer {
    padding: var(--space-md);
    text-align: center;
    font-size: var(--font-xs);
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.app-footer a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Navigation Buttons */
.nav-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: var(--space-sm);
    font-size: var(--font-xs);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.nav-button i {
    font-size: var(--font-lg);
    margin-bottom: var(--space-xs);
}

.nav-button.active {
    color: var(--accent-color);
}

.nav-button:hover {
    color: var(--highlight);
}

/* Theme Toggle Switch */
.theme-toggle {
    position: relative;
}

.theme-switch {
    opacity: 0;
    position: absolute;
}

.theme-switch-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    width: 50px;
    height: 26px;
    background-color: var(--color-dark-blue-2);
    border-radius: 100px;
    position: relative;
    padding: 5px;
    transition: background-color var(--transition-normal);
}

.theme-switch-label .fa-moon {
    color: #f1c40f;
}

.theme-switch-label .fa-sun {
    color: #f39c12;
}

.theme-switch-label .slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--color-white);
    transition: transform var(--transition-normal);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.theme-switch:checked + .theme-switch-label .slider {
    transform: translateX(24px);
}

.theme-switch:checked + .theme-switch-label {
    background-color: var(--color-dark-blue-3);
}

/* Dashboard Styles */
.dashboard-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.last-record h2, .quick-stats h2 {
    margin-bottom: var(--space-md);
    color: var(--highlight);
    font-size: var(--font-lg);
}

.record-date, .record-stats {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-md);
}

.record-date {
    font-size: var(--font-lg);
    font-weight: 600;
}

.record-date i, .record-stats i {
    margin-right: var(--space-sm);
    color: var(--accent-color);
}

.record-stats {
    display: flex;
    gap: var(--space-xl);
}

.stat {
    display: flex;
    align-items: center;
}

.stars {
    display: flex;
    color: #f1c40f;
}

.stars i {
    margin-right: 2px;
}

.record-note {
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-color);
    font-style: italic;
    color: var(--text-secondary);
}

.stats-container {
    display: flex;
    gap: var(--space-md);
}

.stat-box {
    flex: 1;
    background: linear-gradient(to bottom, var(--bg-secondary), rgba(var(--bg-secondary), 0.9));
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.stat-box h3 {
    font-size: var(--font-sm);
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
}

.stat-box p {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--highlight);
}

.stat-box small {
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.dashboard-actions {
    display: flex;
    gap: var(--space-md);
}

.dashboard-actions button {
    flex: 1;
}

.last-record-empty {
    text-align: center;
    padding: var(--space-lg) 0;
}

.last-record-empty p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

/* New Record Form Styles */
.new-record h2 {
    margin-bottom: var(--space-lg);
    color: var(--highlight);
    text-align: center;
}

.sleep-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-row {
    display: flex;
    gap: var(--space-md);
}

.form-row .form-group {
    flex: 1;
}

.form-group label {
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea, .form-group select {
    padding: var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: var(--font-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(233, 69, 96, 0.2);
}

.form-actions {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-md);
}

/* Rating Stars */
.rating-container {
    display: flex;
    justify-content: center;
    margin: var(--space-sm) 0;
}

.rating {
    display: flex;
    flex-direction: row-reverse;
    justify-content: center;
}

.rating input {
    display: none;
}

.rating label {
    cursor: pointer;
    font-size: var(--font-xl);
    color: #ccc;
    padding: 0 var(--space-xs);
    transition: color var(--transition-fast);
}

.rating label:hover,
.rating label:hover ~ label,
.rating input:checked ~ label {
    color: #f1c40f;
}

/* Mood Selector */
.mood-selector {
    display: flex;
    justify-content: space-between;
    margin: var(--space-sm) 0;
}

.mood-selector input {
    display: none;
}

.mood-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.mood-label i {
    font-size: var(--font-xl);
    margin-bottom: var(--space-xs);
    color: #ccc;
}

.mood-label span {
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.mood-selector input:checked + .mood-label {
    background-color: rgba(var(--accent-color), 0.1);
}

.mood-selector input:checked + .mood-label i {
    color: var(--accent-color);
}

.mood-selector input:checked + .mood-label span {
    color: var(--text-primary);
    font-weight: 600;
}

/* Mood Icons Colors */
#mood-great + .mood-label i {
    color: #2ecc71;
}

#mood-good + .mood-label i {
    color: #3498db;
}

#mood-neutral + .mood-label i {
    color: #f39c12;
}

#mood-bad + .mood-label i {
    color: #e67e22;
}

#mood-terrible + .mood-label i {
    color: #e74c3c;
}

/* History Styles */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.history-header h2 {
    color: var(--highlight);
}

.filter-container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.filter-container label {
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.history-item {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: 0 2px 4px var(--shadow-color);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
}

.history-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.history-item-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.history-date {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.history-date i {
    color: var(--accent-color);
}

.history-stats {
    display: flex;
    gap: var(--space-md);
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.history-stats div {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.history-stats i {
    color: var(--accent-color);
}

.history-item-right {
    display: flex;
    align-items: center;
}

.history-item-right i {
    color: var(--accent-color);
}

.empty-history {
    text-align: center;
    padding: var(--space-xl) 0;
}

.empty-history p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* Record Details Styles */
.details-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.details-header h2 {
    color: var(--highlight);
}

.details-date {
    font-size: var(--font-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.details-date i {
    color: var(--accent-color);
}

.details-times {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.time-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.time-item i {
    color: var(--accent-color);
    width: 20px;
    text-align: center;
}

.details-quality, .details-mood {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.details-quality p, .details-mood p {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.stars.large {
    font-size: var(--font-xl);
}

.mood-display {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-lg);
}

.details-notes h3 {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.details-notes p {
    line-height: 1.5;
    white-space: pre-line;
}

.details-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.details-actions button {
    flex: 1;
}

/* Settings Styles */
.settings h2 {
    margin-bottom: var(--space-lg);
    color: var(--highlight);
    text-align: center;
}

.settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.setting-info h3 {
    margin-bottom: var(--space-xs);
}

.setting-info p {
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.danger-zone {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

/* Toggle Switch */
.toggle-switch {
    opacity: 0;
    position: absolute;
}

.toggle-label {
    display: block;
    width: 50px;
    height: 26px;
    background-color: #ccc;
    border-radius: 100px;
    position: relative;
    cursor: pointer;
    transition: background-color var(--transition-normal);
}

.toggle-slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--color-white);
    transition: transform var(--transition-normal);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch:checked + .toggle-label {
    background-color: var(--accent-color);
}

.toggle-switch:checked + .toggle-label .toggle-slider {
    transform: translateX(24px);
}

/* Confirmation Dialog */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.dialog-container {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 400px;
    overflow: hidden;
    animation: dialog-in 0.3s ease;
}

@keyframes dialog-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dialog-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.dialog-header h3 {
    color: var(--text-primary);
}

.dialog-content {
    padding: var(--space-lg);
}

.dialog-actions {
    padding: var(--space-md);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    border-top: 1px solid var(--border-color);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 80px;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: var(--space-sm);
    z-index: 900;
    pointer-events: none;
}

.toast {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    width: 90%;
    max-width: 400px;
    position: relative;
    overflow: hidden;
    animation: toast-in 0.3s ease;
    pointer-events: auto;
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.toast-content i {
    margin-right: var(--space-md);
    font-size: var(--font-lg);
}

.toast-message {
    flex: 1;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-xs);
    margin-left: var(--space-sm);
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background-color: var(--accent-color);
    animation: toast-progress 3s linear forwards;
}

@keyframes toast-progress {
    from {
        width: 100%;
    }
    to {
        width: 0%;
    }
}

.toast.success i {
    color: #2ecc71;
}

.toast.error i {
    color: #e74c3c;
}

.toast.info i {
    color: #3498db;
}

.toast.warning i {
    color: #f39c12;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Adjustments */
@media (max-width: 480px) {
    .app-header {
        padding: var(--space-md);
    }
    
    .app-content {
        padding: var(--space-sm);
    }
    
    .form-row {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .mood-selector {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .mood-label {
        flex: 0 0 30%;
        margin-bottom: var(--space-sm);
    }
    
    .stats-container {
        flex-direction: column;
    }
    
    .dashboard-actions {
        flex-direction: column;
    }
    
    .nav-button span {
        font-size: 10px;
    }
}

@media (min-width: 768px) {
    .app-container {
        max-width: 700px;
        margin: var(--space-lg) auto;
        border-radius: var(--radius-lg);
        box-shadow: 0 4px 20px var(--shadow-color);
        min-height: calc(100vh - var(--space-lg) * 2);
    }
    
    .app-nav {
        position: relative;
        border-top: 1px solid var(--border-color);
    }
    
    .app-content {
        padding-bottom: var(--space-md);
    }
}