/* Dark Mode Variables & Theme Implementation
 * Provides a centralized system for handling dark mode styles
 */

:root {
    /* Light Theme Colors (Default) */
    --bg-primary: #f5f9fc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8fafc;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --accent-color: #00a8b5;
    --accent-hover: #00848f;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --input-bg: #ffffff;
    --placeholder-bg: #f8fafc;
    --navbar-bg: #ffffff;
    --footer-bg: #1e293b;
    --footer-text: #e2e8f0;
    --icon-bg: #e6f7f8;
    --dragarea-border: #cbd5e0;
    --sidebar-overlay: rgba(0, 0, 0, 0.5);
    /* Fast Transitions */
    --theme-transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

/* Dark Theme Colors */
[data-theme="dark"],
html.dark-theme {
    --bg-primary: #242526;
    --bg-secondary: #18191a;
    --bg-tertiary: #3a3b3c;
    --text-primary: #e2e8f0;
    --text-secondary: #cbd5e0;
    --text-muted: #a0aec0;
    --border-color: #4a5568;
    --accent-color: #00a8b5;
    --accent-hover: #00c8d4;
    --card-bg: #18191a;
    --card-border: #4a5568;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    --input-bg: #3a3b3c;
    --placeholder-bg: #3a3b3c;
    --navbar-bg: #18191a;
    --footer-bg: #0f172a;
    --footer-text: #e2e8f0;
    --icon-bg: rgba(0, 168, 181, 0.2);
    --dragarea-border: #4a5568;
    --sidebar-overlay: rgba(0, 0, 0, 0.7);
}

/* Core Element Styles */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--theme-transition);
}

/* Navbar */
.navbar {
    background-color: var(--navbar-bg);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: var(--theme-transition);
}

.navbar a {
    color: var(--text-secondary);
    transition: var(--theme-transition);
}

.navbar a:hover,
.navbar a.active {
    color: var(--accent-color);
}

/* Cards and Containers */
.detection-modes,
.info-card,
.team-member,
.results-section,
.model-status,
.research-info,
.methodology-timeline .timeline-content,
.future-card,
.metrics-card,
.about-card,
.card {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
    box-shadow: var(--card-shadow);
    transition: var(--theme-transition);
}

/* Placeholder Areas */
.placeholder-container,
.drag-area {
    background-color: var(--placeholder-bg);
    color: var(--text-muted);
    border-color: var(--dragarea-border);
    transition: var(--theme-transition);
}

/* Headers and Text */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-primary);
    transition: var(--theme-transition);
}

p,
span {
    color: var(--text-secondary);
    transition: var(--theme-transition);
}

.section-header p,
.card-body p,
.info-card p,
.research-content p {
    color: var(--text-muted);
}

/* Icons and Special Elements */
.card-icon {
    background-color: var(--icon-bg);
    transition: var(--theme-transition);
}

.team-member .member-role {
    color: var(--accent-color);
}

/* Inputs and Interactive Elements */
button,
.upload-btn,
.tab-btn {
    transition: var(--theme-transition);
}

.tab-btn {
    background-color: var(--bg-tertiary);
    color: var(--text-muted);
}

.tab-btn.active {
    background-color: var(--accent-color);
    color: var(--bg-secondary);
}

input[type="text"],
input[type="email"],
select,
.camera-select {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
    transition: var(--theme-transition);
}

/* Prediction Items */
.prediction-item {
    background-color: var(--bg-tertiary);
    border-left-color: var(--accent-color);
    transition: var(--theme-transition);
}

.prediction-item .class-name {
    color: var(--text-primary);
}

.no-results {
    background-color: var(--bg-tertiary);
    color: var(--text-muted);
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    transition: var(--theme-transition);
}

/* Mobile Sidebar */
.mobile-sidebar {
    background-color: var(--card-bg);
    transition: var(--theme-transition);
}

.sidebar-nav a {
    color: var(--text-primary);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background-color: var(--bg-tertiary);
    color: var(--accent-color);
}

.sidebar-overlay {
    background-color: var(--sidebar-overlay);
}

/* Prevent flash of unstyled content during theme switch */
.theme-transition {
    transition: none !important;
}

/* Additional styles to prevent flash */
html,
body {
    transition: var(--theme-transition);
}

/* Dark Mode Toggle Styling */
.theme-toggle {
    position: relative;
    margin: 0 10px;
}

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

.theme-label {
    background-color: #f1f5f9;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px;
    position: relative;
    height: 26px;
    width: 50px;
    transform: scale(1.2);
}

[data-theme="dark"] .theme-label,
html.dark-theme .theme-label {
    background-color: #4a5568;
}

.theme-label .fa-moon {
    color: #f1c40f;
    font-size: 14px;
}

.theme-label .fa-sun {
    color: #f39c12;
    font-size: 14px;
}

.theme-label .toggle-ball {
    background-color: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    height: 22px;
    width: 22px;
    transform: translateX(0px);
    transition: transform 0.2s ease;
}

.theme-checkbox:checked+.theme-label .toggle-ball {
    transform: translateX(24px);
}

/* Specific Component Adjustments for Dark Mode */
[data-theme="dark"] .drag-area,
html.dark-theme .drag-area {
    border-color: var(--dragarea-border);
}

[data-theme="dark"] .hero-section,
html.dark-theme .hero-section {
    background: linear-gradient(135deg, #005a62 0%, #004d41 100%);
}

[data-theme="dark"] .about-hero,
html.dark-theme .about-hero {
    background: linear-gradient(135deg, #005a62 0%, #003d35 100%);
}

/* Timeline adjustments for dark mode */
[data-theme="dark"] .methodology-timeline::after,
html.dark-theme .methodology-timeline::after {
    background-color: var(--border-color);
}

[data-theme="dark"] .timeline-content::after,
html.dark-theme .timeline-content::after {
    background-color: var(--card-bg);
}

/* Disclaimer section in dark mode */
[data-theme="dark"] .disclaimer-section,
html.dark-theme .disclaimer-section {
    background-color: rgba(245, 158, 11, 0.1);
}

[data-theme="dark"] .disclaimer-content p,
html.dark-theme .disclaimer-content p {
    color: #fbd38d;
}