/* Global Styles & Variables */
:root {
    --bg-dark: #0a0b1e;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary: #00f3ff;
    --primary-glow: rgba(0, 243, 255, 0.5);
    --secondary: #7000ff;
    --accent-gold: #ffd700;
    --text-main: #ffffff;
    --text-muted: #a0a0c0;
    --danger: #ff3366;
    --success: #00ffa3;
    --sidebar-width: 250px;
    --sidebar-width-collapsed: 80px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(112, 0, 255, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(0, 243, 255, 0.1), transparent 25%);
    min-height: 100vh;
    color: var(--text-main);
    overflow-x: hidden;
}

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    border-radius: 16px;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: var(--sidebar-width);
    z-index: 1000;
    transition: width 0.3s ease;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow: hidden;
    /* Hide text when collapsed */
}

.sidebar.collapsed {
    width: var(--sidebar-width-collapsed);
}

.sidebar .logo-text,
.sidebar .nav-link span,
.sidebar .btn-logout span {
    transition: opacity 0.2s ease;
    opacity: 1;
    white-space: nowrap;
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-link span,
.sidebar.collapsed .btn-logout span {
    opacity: 0;
    width: 0;
    display: none;
}

.sidebar .nav-link {
    color: var(--text-muted);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s;
}

.sidebar .nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.sidebar .nav-link.active {
    background: linear-gradient(90deg, rgba(0, 243, 255, 0.2), rgba(112, 0, 255, 0.1));
    color: var(--primary);
    border: 1px solid rgba(0, 243, 255, 0.3);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.15);
}

.sidebar .nav-link i,
.sidebar .nav-link svg {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

/* Main Content Area */
.main-content {
    margin-left: var(--sidebar-width);
    transition: margin-left 0.3s ease;
    padding: 2rem;
    min-height: 100vh;
}

.sidebar.collapsed+.main-content {
    margin-left: var(--sidebar-width-collapsed);
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    position: absolute;
    top: 1rem;
    right: -12px;
    background: #1a1b3a;
    border: 1px solid var(--glass-border);
    color: var(--primary);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1001;
    transition: transform 0.3s;
}

.sidebar.collapsed .sidebar-toggle {
    transform: rotate(180deg);
}


/* Components */
.card-glass {
    @extend .glass-panel;
    /* Not using SASS, just a reminder */
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
}

.stat-card h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-card .value {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin: 0.5rem 0;
}

.btn-primary-glow {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.1), rgba(112, 0, 255, 0.1));
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 10px 24px;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary-glow:hover {
    background: var(--primary);
    color: #000;
    box-shadow: 0 0 20px var(--primary-glow);
}

.form-control-glass {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
}

.form-control-glass:focus {
    background: rgba(0, 0, 0, 0.3);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 0 0 3px rgba(0, 243, 255, 0.15);
}

/* Modal specific */
.modal-content.glass-modal {
    background: #0f1026;
    /* Slightly darker/solid for modal availability */
    border: 1px solid var(--glass-border);
    color: white;
    border-radius: 16px;
}

.modal-backdrop.show {
    opacity: 0.8;
}

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

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}


/* Mobile Responsiveness */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
        /* Hide sidebar space on mobile */
    }

    /* Sidebar Overlay */
    .sidebar {
        transform: translateX(-100%);
        width: 250px;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
        background: #0a0b1e;
        /* Solid bg for better readability */
    }

    .sidebar.mobile-show {
        transform: translateX(0);
        width: 250px !important;
        /* Force width */
    }

    /* Keep content showing when collapsed on mobile (overlay mode) */
    .sidebar .logo-text,
    .sidebar .nav-link span,
    .sidebar .btn-logout span {
        opacity: 1 !important;
        width: auto !important;
        display: block !important;
    }

    .sidebar-toggle {
        display: none;
        /* Hide standard toggle, we'll use a hamburger or repurpose */
    }

    /* Mobile Header Toggle */
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: white;
        font-size: 1.5rem;
        cursor: pointer;
        z-index: 1002;
    }

    /* Main Content Adjustments */
    .main-content {
        margin-left: 0 !important;
        padding: 1rem;
    }

    /* Typography Overflows */
    h1.display-6 {
        font-size: 1.75rem;
        word-wrap: break-word;
    }

    .stat-card .value {
        font-size: 2rem;
    }

    /* Table/List adjustments if needed */
    .card-glass {
        padding: 1rem;
    }
}

/* Sidebar Backdrop */
.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s;
}

.sidebar-backdrop.show {
    opacity: 1;
    visibility: visible;
}