/* ==========================================================================
   Global IMG Residency Accelerator Platform - Design System
   ========================================================================== */

/* Design Tokens */
:root {
    --primary-navy: #0C1D36;
    --primary-navy-rgb: 12, 29, 54;
    --accent-gold: #CDAA59;
    --accent-gold-rgb: 205, 170, 89;
    --accent-gold-hover: #bda050;
    --neutral-white: #FFFFFF;
    
    /* Modern Backgrounds & Borders */
    --bg-main: #F6F8FB;
    --bg-navy-gradient: linear-gradient(135deg, #0C1D36 0%, #152E52 100%);
    --bg-gold-gradient: linear-gradient(135deg, #CDAA59 0%, #E5C373 100%);
    
    /* Typography & Text */
    --font-heading: 'Outfit', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --text-dark: #0F172A;
    --text-navy: #0C1D36;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    
    /* Transitions & Shadows */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 4px rgba(12, 29, 54, 0.04);
    --shadow-md: 0 4px 12px rgba(12, 29, 54, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(12, 29, 54, 0.08), 0 8px 10px -6px rgba(12, 29, 54, 0.08);
    --shadow-glow: 0 0 15px rgba(205, 170, 89, 0.3);
}

/* Base Resets & Global Styles */
body {
    background-color: var(--bg-main);
    color: var(--text-dark);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-navy);
    font-weight: 700;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(12, 29, 54, 0.03);
}
::-webkit-scrollbar-thumb {
    background: rgba(12, 29, 54, 0.2);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(12, 29, 54, 0.35);
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

/* Navigation Bar (Glassmorphic Accent) */
.navbar-custom {
    background-color: rgba(12, 29, 54, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--accent-gold);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.navbar-custom .navbar-brand {
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
    font-size: 1.35rem;
    transition: var(--transition-smooth);
}

.navbar-custom .nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.navbar-custom .nav-link:hover {
    color: var(--accent-gold);
    background-color: rgba(255, 255, 255, 0.05);
}

.navbar-custom .nav-link.active {
    color: var(--accent-gold);
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   UI Components & Utilities
   ========================================================================== */

/* Premium Cards */
.premium-card {
    background: var(--neutral-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    position: relative;
}

.premium-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Prevent layout shift/hover effects for static content layout when not desired */
.premium-card-static {
    background: var(--neutral-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.premium-card-header {
    background: var(--bg-navy-gradient);
    color: var(--neutral-white);
    padding: 1.5rem 1.75rem;
    border-bottom: 2px solid var(--accent-gold);
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
}

.premium-card-header h1,
.premium-card-header h2,
.premium-card-header h3,
.premium-card-header h4,
.premium-card-header h5,
.premium-card-header h6 {
    color: var(--neutral-white) !important;
}

/* Glassmorphism Panels */
.glass-panel {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-md);
    border-radius: 16px;
}

.glass-card-navy {
    background: rgba(12, 29, 54, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

/* Custom Buttons */
.btn-gold {
    background: var(--bg-gold-gradient);
    color: var(--primary-navy);
    font-family: var(--font-heading);
    font-weight: 700;
    border: none;
    border-radius: 30px;
    padding: 0.6rem 1.8rem;
    box-shadow: 0 4px 10px rgba(205, 170, 89, 0.25);
    transition: var(--transition-smooth);
}

.btn-gold:hover, .btn-gold:focus {
    background: var(--accent-gold-hover);
    color: var(--primary-navy);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(205, 170, 89, 0.4);
}

.btn-gold:active {
    transform: translateY(0);
}

.btn-navy {
    background: var(--bg-navy-gradient);
    color: var(--neutral-white) !important;
    font-family: var(--font-heading);
    font-weight: 600;
    border: none;
    border-radius: 30px;
    padding: 0.6rem 1.8rem;
    transition: var(--transition-smooth);
}

.btn-navy:hover, .btn-navy:focus {
    opacity: 0.95;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(12, 29, 54, 0.2);
}

.btn-outline-gold {
    border: 2px solid var(--accent-gold);
    color: var(--accent-gold) !important;
    background: transparent;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 30px;
    padding: 0.5rem 1.6rem;
    transition: var(--transition-smooth);
}

.btn-outline-gold:hover {
    background-color: var(--accent-gold);
    color: var(--primary-navy) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(205, 170, 89, 0.2);
}

.btn-outline-navy {
    border: 2px solid var(--primary-navy);
    color: var(--primary-navy) !important;
    background: transparent;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 30px;
    padding: 0.5rem 1.6rem;
    transition: var(--transition-smooth);
}

.btn-outline-navy:hover {
    background-color: var(--primary-navy);
    color: var(--neutral-white) !important;
    transform: translateY(-2px);
}

/* Input Fields & Forms */
.form-control, .form-select {
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    transition: var(--transition-smooth);
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(205, 170, 89, 0.15);
    outline: none;
}

/* Badges */
.forum-badge {
    background-color: rgba(12, 29, 54, 0.08);
    color: var(--primary-navy);
    padding: 0.4em 0.8rem;
    font-size: 0.75em;
    font-weight: 600;
    border-radius: 30px;
}

.forum-badge-gold {
    background-color: rgba(205, 170, 89, 0.15);
    color: #8c6e26;
    padding: 0.4em 0.8rem;
    font-size: 0.75em;
    font-weight: 600;
    border-radius: 30px;
}

.badge-premium-navy {
    background-color: var(--primary-navy);
    color: var(--accent-gold);
    padding: 0.5rem 1rem;
    border-radius: 30px;
    font-weight: 600;
}

/* Custom Alert styling overrides */
.alert {
    border-radius: 12px !important;
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   LMS Specific Layout (Split-screen)
   ========================================================================== */
.lms-container {
    height: calc(100vh - 90px);
    border-radius: 20px;
    overflow: hidden;
}

.lms-sidebar {
    background-color: var(--primary-navy);
    background-image: var(--bg-navy-gradient);
    color: var(--neutral-white);
    overflow-y: auto;
    border-right: 2px solid var(--accent-gold);
}

.lms-content {
    overflow-y: auto;
    background-color: var(--neutral-white);
}

.module-header {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--accent-gold) !important;
    padding: 12px 18px;
    font-weight: 700;
    letter-spacing: 0.05em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.lesson-item {
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-smooth);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.lesson-item:hover {
    background-color: rgba(205, 170, 89, 0.08);
    color: var(--accent-gold);
}

.lesson-item.active {
    background-color: rgba(205, 170, 89, 0.15);
    color: var(--accent-gold);
    font-weight: 600;
    border-left: 4px solid var(--accent-gold);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 ratio */
    height: 0;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    background: #000;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Progress circle indicator styling */
.progress-ring-container {
    position: relative;
    width: 120px;
    height: 120px;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Custom Checkbox and Switch overrides to brand colors */
.form-check-input:checked {
    background-color: var(--accent-gold) !important;
    border-color: var(--accent-gold) !important;
}

.form-check-input:focus {
    border-color: var(--accent-gold) !important;
    box-shadow: 0 0 0 3px rgba(205, 170, 89, 0.15) !important;
}

/* Sidebar scrollbar dark overrides */
.lms-sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
}
.lms-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}
.lms-sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Hover & Rollover Effects */
.hover-gold {
    transition: var(--transition-smooth) !important;
}
.hover-gold:hover {
    color: var(--accent-gold) !important;
}

/* Footer List Group Styles */
.footer-list-group {
    list-style: none !important;
    padding-left: 0 !important;
}
.footer-list-group li {
    position: relative !important;
    padding-left: 18px !important;
    margin-bottom: 0.5rem !important;
    transition: var(--transition-smooth) !important;
}
.footer-list-group li::before {
    content: "" !important;
    position: absolute !important;
    left: 0 !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    width: 6px !important;
    height: 6px !important;
    background-color: var(--accent-gold) !important;
    border-radius: 50% !important;
    opacity: 0.5 !important;
    transition: var(--transition-smooth) !important;
}
.footer-list-group li a {
    display: inline-block !important;
    transition: var(--transition-smooth) !important;
}
.footer-list-group li:hover::before {
    opacity: 1 !important;
    transform: translateY(-50%) scale(1.3) !important;
    box-shadow: 0 0 8px rgba(205, 170, 89, 0.6) !important;
}
.footer-list-group li:hover a {
    padding-left: 6px !important;
    color: var(--accent-gold) !important;
    opacity: 1 !important;
}

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

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