:root {
    --primary-black: #000000;
    --dark-black: #111111;
    --light-black: #1a1a1a;
    --primary-gold: #D4AF37;
    --light-gold: #FFD700;
    --dark-gold: #B8860B;
    --text-light: #f8f9fa;
    --text-gray: #cccccc;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-black);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.navbar {
    background-color: rgba(0, 0, 0, 0.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--primary-gold);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    color: var(--primary-gold) !important;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-decoration: none;
}

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: color 0.3s;
    text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-gold) !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.9));
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 30%, var(--primary-black) 70%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-image {
    position: relative;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Gold Text */
.gold-text {
    color: var(--primary-gold) !important;
}

/* Section Titles */
.section-title {
    position: relative;
    padding-bottom: 20px;
    margin-bottom: 40px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary-gold);
}

/* Cards */
.card {
    background: var(--light-black);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 15px;
    transition: all 0.3s ease;
    overflow: hidden;
    height: 100%;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.1);
}

/* Buttons */
.btn-gold {
    background: linear-gradient(45deg, var(--primary-gold), var(--light-gold));
    color: var(--primary-black);
    border: none;
    font-weight: 600;
    padding: 12px 30px;
    border-radius: 30px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-gold:hover {
    background: linear-gradient(45deg, var(--dark-gold), var(--primary-gold));
    color: var(--primary-black);
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

.btn-outline-light {
    border: 2px solid var(--text-light);
    color: var(--text-light);
    padding: 10px 28px;
    border-radius: 30px;
    transition: all 0.3s;
}

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

/* Stat Cards */
.stat-card {
    background: rgba(212, 175, 55, 0.1);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(212, 175, 55, 0.2);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    color: var(--primary-gold);
    font-weight: 700;
    line-height: 1;
}

/* Course Cards */
.course-card {
    position: relative;
}

.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-gold);
    color: var(--primary-black);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
    z-index: 1;
}

/* Feature Cards */
.feature-card {
    background: var(--light-black);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(212, 175, 55, 0.2);
    height: 100%;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary-gold);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-gold);
    margin-bottom: 20px;
}

.feature-card h4 {
    color: var(--primary-gold);
    margin-bottom: 15px;
}

/* Testimonial Cards */
.testimonial-card {
    background: var(--light-black);
    border-left: 4px solid var(--primary-gold);
    padding: 30px;
    margin: 20px 0;
    border-radius: 0 10px 10px 0;
}

/* Gold Border */
.gold-border {
    border: 2px solid var(--primary-gold);
    border-radius: 15px;
    overflow: hidden;
}

/* Form Styles */
.form-control {
    background: var(--light-black);
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: var(--text-light);
    border-radius: 10px;
    padding: 12px 15px;
    transition: all 0.3s;
}

.form-control:focus {
    background: var(--light-black);
    border-color: var(--primary-gold);
    color: var(--text-light);
    box-shadow: 0 0 0 0.25rem rgba(212, 175, 55, 0.25);
}

/* Footer */
.footer {
    background: var(--dark-black);
    border-top: 2px solid var(--primary-gold);
    padding: 60px 0 20px;
    margin-top: auto;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(212, 175, 55, 0.1);
    color: var(--primary-gold);
    border-radius: 50%;
    margin: 0 5px;
    transition: all 0.3s;
    text-decoration: none;
}

.social-icon:hover {
    background: var(--primary-gold);
    color: var(--primary-black);
    transform: translateY(-3px);
}

/* Animations */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.shimmer-text {
    background: linear-gradient(90deg, var(--primary-gold) 25%, var(--light-gold) 50%, var(--primary-gold) 75%);
    background-size: 1000px 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: shimmer 3s infinite linear;
}

/* Course Page Specific */
.course-detail {
    background: var(--light-black);
    border-radius: 15px;
    padding: 40px;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.course-highlight {
    background: rgba(212, 175, 55, 0.1);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
    border-left: 3px solid var(--primary-gold);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
        text-align: center;
    }
    
    .display-3 {
        font-size: 2.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(212, 175, 55, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-gold);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-gold);
    color: var(--primary-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 1000;
    text-decoration: none;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--light-gold);
    transform: translateY(-5px);
}