:root {
    --primary: #3B71FE;
    --primary-hover: #295AD1;
    --secondary: #E91E63;
    --accent: #00F2FF;
    --bg-dark: #0F172A;
    --bg-surface: #1E293B;
    --bg-surface-2: #334155;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: white;
    box-shadow: 0 10px 15px -3px rgba(59, 113, 254, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(59, 113, 254, 0.4);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
}

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

.section-padding {
    padding: 100px 0;
}

.text-center {
    text-align: center;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navbar */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--glass-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Hero Section */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

#three-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    max-width: 700px;
}

.hero-content h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
}

.hero-image-wrapper {
    position: relative;
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.hero-main-img {
    width: 100%;
    max-width: 500px;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    z-index: 2;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    border-radius: 16px;
    z-index: 3;
    animation: float 6s ease-in-out infinite;
}

.card-1 { top: 10%; left: -10%; }
.card-2 { bottom: 10%; right: -5%; animation-delay: -3s; }

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

/* Categories Section */
.section-title {
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background: var(--bg-surface);
    padding: 2.5rem;
    border-radius: 24px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
}

.category-card:hover {
    transform: translateY(-10px);
    background: var(--bg-surface-2);
    border-color: var(--primary);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: var(--glass);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--primary);
    transition: var(--transition);
}

.category-card:hover .category-icon {
    background: var(--primary);
    color: white;
    transform: rotate(10deg);
}

/* Training Modes */
.modes-wrapper {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
}

.mode-card {
    flex: 1;
    background: var(--bg-surface);
    border-radius: 30px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--glass-border);
}

.mode-img {
    height: 250px;
    overflow: hidden;
}

.mode-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.mode-card:hover .mode-img img {
    transform: scale(1.1);
}

.mode-info {
    padding: 2.5rem;
}

.mode-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.mode-features {
    margin: 1.5rem 0 2rem;
}

.mode-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

.mode-features i {
    color: var(--primary);
}

/* Courses */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.course-card {
    background: var(--bg-surface);
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.4);
}

.course-thumb {
    position: relative;
    height: 200px;
}

.course-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
}

.course-content {
    padding: 2rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.course-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
}

/* Footer */
footer {
    background: #070B14;
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 60px;
}

.footer-about p {
    color: var(--text-muted);
    margin: 1.5rem 0 2rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: var(--bg-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.social-links a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-5px);
}

.footer-links h4 {
    margin-bottom: 1.5rem;
}

.footer-links li {
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.newsletter p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.subscribe-form {
    display: flex;
    background: var(--bg-surface);
    padding: 0.5rem;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
}

.subscribe-form input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0 1.5rem;
    color: white;
    outline: none;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-content h1 { font-size: 3.5rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .modes-wrapper { flex-direction: column; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-content h1 { font-size: 2.8rem; }
    .hero-image-wrapper { display: none; }
    .section-padding { padding: 60px 0; }
}