/* ================================================
   Theme System - Light, Medium Dark, Dark
   ================================================ */

/* Default Light Theme */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-quaternary: #e2e8f0;

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-muted: #94a3b8;

    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;

    --link-color: #3b82f6;
    --link-hover: #2563eb;

    --card-bg: #ffffff;
    --card-bg-hover: #f8fafc;
    --card-shadow: rgba(0, 0, 0, 0.1);
    --card-border: rgba(0, 0, 0, 0.1);

    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-focus: #3b82f6;

    --header-bg: rgba(255, 255, 255, 0.95);
    --header-shadow: rgba(0, 0, 0, 0.1);

    --footer-bg: #1a1d29;
    --footer-text: #94a3b8;

    --overlay-bg: rgba(0, 0, 0, 0.5);

    /* Component specific */
    --table-header-bg: #f8fafc;
    --table-row-hover: #f1f5f9;
    --comment-bg: #f8fafc;
    --comment-hover: #ffffff;
    --nav-bg: #ffffff;
    --tab-bg: #ffffff;
    --tab-border: #e2e8f0;

    /* Shadows */
    --shadow-sm: rgba(0, 0, 0, 0.05);
    --shadow-md: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
}

/* Medium Dark Theme */
body[data-theme="medium-dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #334155;
    --bg-tertiary: #475569;
    --bg-quaternary: #64748b;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;

    --border-color: #475569;
    --border-hover: #64748b;

    --link-color: #60a5fa;
    --link-hover: #93c5fd;

    --card-bg: #2d3748;
    --card-bg-hover: #374151;
    --card-shadow: rgba(0, 0, 0, 0.4);
    --card-border: rgba(255, 255, 255, 0.1);

    --input-bg: #374151;
    --input-border: #4b5563;
    --input-focus: #60a5fa;

    --header-bg: rgba(30, 41, 59, 0.95);
    --header-shadow: rgba(0, 0, 0, 0.4);

    --footer-bg: #0f172a;
    --footer-text: #cbd5e1;

    --overlay-bg: rgba(0, 0, 0, 0.7);

    /* Component specific */
    --table-header-bg: #334155;
    --table-row-hover: #374151;
    --comment-bg: #2d3748;
    --comment-hover: #374151;
    --nav-bg: #2d3748;
    --tab-bg: #2d3748;
    --tab-border: #475569;

    /* Shadows */
    --shadow-sm: rgba(0, 0, 0, 0.2);
    --shadow-md: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.4);
}

/* Dark Theme - True Black */
body[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1e1e1e;
    --bg-quaternary: #2a2a2a;

    --text-primary: #f5f5f5;
    --text-secondary: #d4d4d4;
    --text-tertiary: #a3a3a3;
    --text-muted: #737373;

    --border-color: #262626;
    --border-hover: #404040;

    --link-color: #60a5fa;
    --link-hover: #93c5fd;

    --card-bg: #171717;
    --card-bg-hover: #1f1f1f;
    --card-shadow: rgba(0, 0, 0, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);

    --input-bg: #1a1a1a;
    --input-border: #262626;
    --input-focus: #60a5fa;

    --header-bg: rgba(10, 10, 10, 0.95);
    --header-shadow: rgba(0, 0, 0, 0.6);

    --footer-bg: #000000;
    --footer-text: #d4d4d4;

    --overlay-bg: rgba(0, 0, 0, 0.85);

    /* Component specific */
    --table-header-bg: #141414;
    --table-row-hover: #1f1f1f;
    --comment-bg: #171717;
    --comment-hover: #1f1f1f;
    --nav-bg: #171717;
    --tab-bg: #171717;
    --tab-border: #262626;

    /* Shadows */
    --shadow-sm: rgba(0, 0, 0, 0.4);
    --shadow-md: rgba(0, 0, 0, 0.5);
    --shadow-lg: rgba(0, 0, 0, 0.7);
}

/* Apply theme colors to body and main elements */
body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary) !important;
}

/* Paragraphs and text elements */
p, span, div, li, td, th {
    color: var(--text-primary);
}

/* Strong emphasis */
strong, b {
    color: var(--text-primary);
}

/* Main content area */
main, .container, .content {
    background-color: transparent;
    color: var(--text-primary);
}

/* Background decorative circles */
.bg-circle {
    transition: opacity 0.3s ease;
}

body[data-theme="medium-dark"] .bg-circle,
body[data-theme="dark"] .bg-circle {
    opacity: 0.3;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.card-body {
    color: var(--text-primary);
}

.card-title {
    color: var(--text-primary);
}

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

/* Text colors */
.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

/* Links */
a {
    color: var(--link-color);
}

a:hover {
    color: var(--link-hover);
}

/* Borders */
.border,
.border-top,
.border-bottom,
.border-start,
.border-end {
    border-color: var(--border-color) !important;
}

/* Forms */
.form-control,
.form-select {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--input-bg);
    border-color: var(--input-focus);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* Buttons */
.btn-outline-primary {
    color: var(--link-color);
    border-color: var(--link-color);
}

.btn-outline-primary:hover {
    background-color: var(--link-color);
    border-color: var(--link-color);
}

/* List groups */
.list-group-item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.list-group-item:hover {
    background-color: var(--bg-secondary);
}

/* Modals */
.modal-content {
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.modal-header,
.modal-footer {
    border-color: var(--border-color);
}

/* Dropdowns */
.dropdown-menu {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

.dropdown-item {
    color: var(--text-primary);
}

.dropdown-item:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.dropdown-divider {
    border-color: var(--border-color);
}

/* Alerts */
.alert {
    border-color: var(--border-color);
}

.alert-light {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Tables */
.table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.table > :not(caption) > * > * {
    border-bottom-color: var(--border-color);
    background-color: transparent;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: var(--bg-secondary);
}

/* Navbar / Header */
.navbar {
    background-color: var(--header-bg) !important;
}

.navbar-light .navbar-nav .nav-link {
    color: var(--text-primary);
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--link-color);
}

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

/* Pagination */
.pagination .page-link {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.pagination .page-link:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-hover);
}

.pagination .page-item.active .page-link {
    background-color: var(--link-color);
    border-color: var(--link-color);
}

/* Breadcrumb */
.breadcrumb {
    background-color: var(--bg-secondary);
}

.breadcrumb-item {
    color: var(--text-secondary);
}

.breadcrumb-item.active {
    color: var(--text-primary);
}

/* Badge */
.badge {
    color: #ffffff;
}

/* Progress */
.progress {
    background-color: var(--bg-tertiary);
}

/* Smooth transitions for all theme changes */
* {
    transition: background-color 0.3s ease,
                color 0.3s ease,
                border-color 0.3s ease;
}

/* Exclude elements that shouldn't transition */
.no-theme-transition,
.no-theme-transition * {
    transition: none !important;
}

/* Images - adjust brightness in dark modes */
body[data-theme="medium-dark"] img:not(.no-filter),
body[data-theme="dark"] img:not(.no-filter) {
    filter: brightness(0.9);
}

/* Code blocks */
pre,
code {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Scrollbar styling for dark themes */
body[data-theme="medium-dark"]::-webkit-scrollbar-track,
body[data-theme="dark"]::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

body[data-theme="medium-dark"]::-webkit-scrollbar-thumb,
body[data-theme="dark"]::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
}

body[data-theme="medium-dark"]::-webkit-scrollbar-thumb:hover,
body[data-theme="dark"]::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}