/* ==========================================================================
   1. DESIGN TOKENS (VARIABLES)
   ========================================================================== */
:root {
    /* Brand Colors */
    --sxc-navy: #002147;
    --sxc-blue: #1a4da1;
    --sxc-gold: #b39210;
    --sxc-danger: #d9534f;

    /* Backgrounds & Neutrals */
    --light-bg: #f8fafc;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --glass-white: rgba(255, 255, 255, 0.95);

    /* Elevation & Animation */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 15px 35px rgba(0, 33, 71, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 12px;
}

/* ==========================================================================
   2. GLOBAL BASE STYLES
   ========================================================================== */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.font-playfair { font-family: 'Playfair Display', serif; }

h1, h2, h3, h4, .college-title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    color: var(--sxc-navy);
}

/* ==========================================================================
   3. NAVIGATION & BREADCRUMBS
   ========================================================================== */
.navbar {
    background: var(--glass-white);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    z-index: 1000;
}

.navbar-brand { font-weight: 700; color: var(--sxc-navy) !important; }

.breadcrumb { font-size: 0.85rem; margin-bottom: 0; }
.breadcrumb-item a { color: var(--sxc-blue); text-decoration: none; transition: var(--transition); }
.breadcrumb-item a:hover { color: var(--sxc-gold); }

/* ==========================================================================
   4. UI COMPONENTS (CARDS, HEADERS & BADGES)
   ========================================================================== */
.card-elegant {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-elegant:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }

/* Dark High-Contrast Card Header */
.card-header-highlight {
    background: var(--sxc-navy);
    padding: 12px 16px;
    border-left: 5px solid var(--sxc-gold);
    border-radius: 6px;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: inset 0 -2px 5px rgba(0,0,0,0.1);
}

.card-title-main {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    color: #ffffff !important;
    margin-bottom: 0 !important;
    font-size: 1.1rem;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

/* Badges & Course Tokens */
.section-label {
    font-weight: 700;
    color: var(--sxc-gold);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1.2px;
    margin-bottom: 15px;
    display: block;
}

.course-badge {
    background: #f1f5f9;
    color: var(--sxc-navy);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 700;
    margin: 0 6px 8px 0;
    display: inline-block;
    border: 1px solid #e2e8f0;
    transition: var(--transition);
}

.course-badge:hover { background: var(--sxc-blue); color: #ffffff; border-color: var(--sxc-blue); }

.badge-pulse {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
    animation: pulse-white 2s infinite;
}
@keyframes pulse-white {
    0% { transform: scale(0.95); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
    100% { transform: scale(0.95); }
}

/* ==========================================================================
   5. SIDEBAR & NAVIGATION LISTS
   ========================================================================== */
.list-group-item-action {
    border: none !important;
    padding: 12px 15px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #334155;
    border-radius: 8px !important;
    margin-bottom: 4px;
    transition: var(--transition);
}

.list-group-item-action:hover { background-color: #f1f5f9 !important; color: var(--sxc-blue); padding-left: 20px; }
.list-group-item-action i { transition: var(--transition); }
.list-group-item-action:hover i { transform: translateX(3px); color: var(--sxc-gold); }

.sidebar-cta {
    background: linear-gradient(135deg, var(--sxc-navy) 0%, var(--sxc-blue) 100%);
    color: #ffffff;
    border-radius: var(--radius);
    padding: 1.5rem;
}
.sidebar-cta ul { padding-left: 1.2rem; font-size: 0.85rem; opacity: 0.9; }

/* ==========================================================================
   6. BUTTONS & INTERACTIVE ELEMENTS
   ========================================================================== */
.btn-apply {
    background: var(--sxc-navy);
    color: #ffffff;
    border-radius: 8px;
    padding: 12px 18px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
    transition: var(--transition);
}
.btn-apply:hover { background: var(--sxc-gold); color: #ffffff; box-shadow: 0 4px 15px rgba(179, 146, 16, 0.3); }

/* Fine-tuned Ghost Button (Light) */
.btn-details-light {
    background: #ffffff;
    color: var(--sxc-navy);
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 10px 18px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.btn-details-light:hover { background: var(--light-bg); border-color: var(--sxc-gold); color: var(--sxc-blue); transform: translateY(-2px); }
.btn-details-light i { color: var(--sxc-gold); transition: var(--transition); }
.btn-details-light:hover i { transform: translateX(5px); }

.btn-gold { background-color: var(--sxc-gold); color: white; border: none; transition: var(--transition); }
.btn-gold:hover { background-color: #967a0d; color: white; }

.float-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--sxc-navy);
    color: white;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
    text-decoration: none;
    transition: var(--transition);
}
.float-btn:hover { transform: scale(1.1); background: var(--sxc-gold); }

/* ==========================================================================
   7. HERO & FOOTER REFINEMENTS
   ========================================================================== */
.hero-card {
    background: linear-gradient(135deg, #ffffff 0%, #f0f4f8 100%);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(26, 77, 161, 0.1);
    position: relative;
    overflow: hidden;
}
.hero-card::after {
    content: ''; position: absolute; top: -50px; right: -50px; width: 200px; height: 200px;
    background: var(--sxc-gold); opacity: 0.03; border-radius: 50%;
}

.accreditation-list {
    font-size: 0.85rem;
    color: var(--text-muted);
    border-left: 3px solid var(--sxc-gold);
    padding-left: 20px;
}

.main-footer {
    background: linear-gradient(180deg, var(--sxc-navy) 0%, #000c1a 100%);
    color: #ffffff;
    padding: 60px 0 30px;
    margin-top: 80px;
    border-top: 4px solid var(--sxc-gold);
}
.main-footer p.small { color: rgba(255, 255, 255, 0.7); }
.footer-divider { border-top: 1px solid rgba(255, 255, 255, 0.1); max-width: 100px; margin: 25px auto; }

/* ==========================================================================
   8. UTILITIES & RESPONSIVENESS
   ========================================================================== */
.alert-custom { border-radius: 10px; padding: 20px; font-size: 0.9rem; margin-bottom: 20px; }
.alert-warning-soft { background-color: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-danger-soft { background-color: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }

.bg-navy { background-color: var(--sxc-navy) !important; }
.letter-spacing-1 { letter-spacing: 1px; }

@media (max-width: 991px) { aside { margin-top: 3rem; } }
@media (max-width: 768px) {
    .card-elegant { padding: 1.25rem; }
    .display-6 { font-size: 1.75rem; }
    .hero-card { padding: 25px; }
    .float-btn { bottom: 20px; right: 20px; }
}

/* Active Sidebar Item Styling */
.list-group-item.active-menu {
    background-color: var(--sxc-navy) !important;
    color: white !important;
    border-color: var(--sxc-navy) !important;
    font-weight: 600;
}

.list-group-item.active-menu i {
    color: var(--sxc-gold) !important; /* Gold arrow for the active item */
}

/* Hover effect for non-active items */
.list-group-item-action:hover {
    background-color: #f8f9fa;
    padding-left: 1.25rem;
    transition: all 0.2s ease;
}