/* =========================================
   1. VARIABLES & THEME TOKENS
   ========================================= */

:root {
    /* --- Brand Colors (Electric Blue) --- */
    --neon-cyan: #2563eb;
    /* Electric Blue (Primary Main) */
    --neon-mag: #9333ea;
    /* Purple-600 */
    --neon-purple: #7c3aed;
    /* Violet-600 */
    --neon-green: #059669;
    /* Emerald-600 */
    --neon-blue: #1d4ed8;
    /* Deep Blue (Primary Hover) */

    /* --- Surface & Backgrounds (Light Mode - Modern Slate) --- */
    --bg-page: #f8fafc;
    /* Slate-50 */
    --bg-surface: #ffffff;
    /* White */
    --bg-surface-secondary: #f1f5f9;
    /* Slate-100 */

    /* --- Borders & Overlays --- */
    --border-color: #000000;
    /* Black for High Contrast */
    --hover-overlay: rgba(15, 23, 42, 0.04);
    /* Slate-900 at 4% */

    /* --- Typography --- */
    --text-primary: #0f172a;
    /* Slate-900 */
    --text-secondary: #64748b;
    /* Slate-500 */
    --text-muted: #94a3b8;
    /* Slate-400 */
}

/* --- Dark Mode Overrides --- */
html.dark {
    --neon-cyan: #3b82f6;
    /* Blue-500 (Primary Main - Bright) */
    --neon-mag: #c084fc;
    /* Purple-400 */
    --neon-purple: #a78bfa;
    /* Violet-400 */
    --neon-green: #34d399;
    /* Emerald-400 */
    --neon-blue: #2563eb;
    /* Blue-600 (Primary Hover) */

    --bg-page: #0a0a0f;
    /* Deep Black */
    --bg-surface: #12121c;
    /* Dark Blue/Gray */
    --bg-surface-secondary: #1a1a2e;

    --border-color: #2a2a3a;
    --hover-overlay: rgba(255, 255, 255, 0.05);

    --text-primary: #e0e0ff;
    /* Bright Blue/White */
    --text-secondary: #9a9aaf;
    /* Muted Blue/Gray */
    --text-muted: #6b7280;
}

/* =========================================
   2. BOOTSTRAP OVERRIDES (Global)
   ========================================= */

body {
    /* Map CSS Variables to Bootstrap Variables where possible */
    --bs-body-bg: var(--bg-page);
    --bs-body-color: var(--text-primary);
    --bs-font-sans-serif: "Space Grotesk", system-ui, -apple-system, sans-serif;

    --bs-primary: var(--neon-cyan);
    --bs-primary-rgb: 96, 165, 250;

    --bs-secondary: var(--text-secondary);
    --bs-success: var(--neon-green);
    --bs-info: var(--neon-blue);

    --bs-light: var(--bg-surface);
    --bs-dark: #000000;

    --bs-link-color: var(--neon-cyan);
    --bs-link-hover-color: #93c5fd;

    --bs-card-bg: var(--bg-surface);
    --bs-card-border-color: var(--border-color);
    --bs-card-cap-bg: transparent;

    --bs-border-color: var(--border-color);

    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-family: var(--bs-font-sans-serif);

    transition: background-color 0.3s ease, color 0.3s ease;
}

/* =========================================
   3. LAYOUT & SIDEBAR
   ========================================= */

#sidebar {
    width: 60px;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    transition: width 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

#sidebar.expanded {
    width: 250px;
}

.sidebar-text {
    opacity: 0;
    transition: opacity 150ms ease-in-out;
    pointer-events: none;
    white-space: nowrap;
}

#sidebar.expanded .sidebar-text {
    opacity: 1;
    transition-delay: 150ms;
    pointer-events: auto;
}

#sidebar:not(.expanded) .sidebar-text {
    transition-delay: 0ms;
}

.sidebar-link {
    transition: all 0.2s;
    color: var(--text-secondary);
}

.sidebar-link:hover,
.sidebar-link.text-primary {
    color: var(--neon-cyan) !important;
    background-color: var(--hover-overlay);
}

#toggleSidebar span {
    transition: transform 300ms ease-in-out;
}

#sidebar.expanded #toggleSidebar span {
    transform: rotate(180deg);
}

main {
    transition: margin-left 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar Logo Transition */
.sidebar-logo-img {
    max-height: 35px;
    transition: max-height 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

#sidebar.expanded .sidebar-logo-img {
    max-height: 80px;
}

/* =========================================
   4. COMPONENTS
   ========================================= */

/* Cards */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.card-header,
.card-footer {
    background-color: var(--hover-overlay);
    border-color: var(--border-color);
}

/* Forms */
.form-control,
.form-select,
.form-control:disabled,
.form-control[readonly] {
    background-color: var(--bg-page);
    /* Contrast against card surface */
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-page);
    border-color: var(--text-primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 0, 0, 0.05);
    /* Subtle Black/Gray Shadow */
}

html.dark .form-control:focus,
html.dark .form-select:focus {
    border-color: #ffffff;
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.8;
}

/* Buttons */
.btn-primary {
    background-color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    color: #ffffff;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: var(--neon-blue);
    /* Maps to darker shade in Light, vivid in Dark */
    border-color: var(--neon-blue);
    color: #ffffff;
    color: #ffffff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    /* Tailwind Shadow */
    transform: translateY(-1px);
}

html.dark .btn-primary {
    color: #000000;
    background-color: #ffffff;
    border-color: #ffffff;
    /* Always Black Text on White Button */
    font-weight: 600;
}

html.dark .btn-primary:hover {
    box-shadow: 0 4px 6px -1px rgba(255, 255, 255, 0.1), 0 2px 4px -1px rgba(255, 255, 255, 0.06);
    background-color: #e5e5e5;
    border-color: #e5e5e5;
    color: #000000;
}
.logo-light { display: inline; }
.logo-dark { display: none; }
html.dark .logo-light { display: none; }
html.dark .logo-dark { display: inline; }

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

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

.table-hover>tbody>tr:hover>* {
    background-color: var(--hover-overlay);
    color: var(--text-primary);
}

/* Modals */
.modal-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
}

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

.btn-close {
    /* Invert close button in dark mode to be visible */
    filter: none;
}

html.dark .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

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

.bg-light {
    background-color: var(--bg-surface) !important;
}

/* Remap bg-light to surface */
.bg-white {
    background-color: var(--bg-surface) !important;
}

.bg-body {
    background-color: var(--bg-page) !important;
    color: var(--text-primary) !important;
}

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

.text-dark {
    color: var(--text-primary) !important;
    /* Force text-dark to be readable in dark mode */
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* =========================================
   5. DROPDOWNS & POPOVERS
   ========================================= */

.dropdown-menu {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    /* Tailwind-ish shadow */
    border-radius: 0.5rem;
    padding: 0.5rem;
}

.dropdown-item {
    color: var(--text-primary);
    border-radius: 0.375rem;
    /* Rounded items */
    transition: all 0.2s;
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--hover-overlay);
    color: var(--neon-cyan);
    /* Highlight text on hover */
}

.dropdown-header {
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.dropdown-divider {
    border-top-color: var(--border-color);
    opacity: 1;
    /* Bootstrap default is partial opacity */
}

/* =========================================
   6. PRELOADER
   ========================================= */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background-color: var(--bg-page);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

/* =========================================
   7. UTILITIES (Missing in BS 5.2)
   ========================================= */

.object-fit-cover {
    object-fit: cover;
}

.object-fit-contain {
    object-fit: contain;
}