:root {
    --bg-base: #0a0a0c;
    --bg-darker: #050506;
    --bg-card: rgba(20, 20, 25, 0.6);
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #ec4899;
    --accent: #8b5cf6;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --border: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .logo-text, .challenge-header .price {
    font-family: 'Outfit', sans-serif;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.text-success {
    color: var(--success);
}

.bg-darker {
    background-color: var(--bg-darker);
}

/* Glassmorphism */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    border-color: white;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    transition: background-color 0.3s, backdrop-filter 0.3s;
}

.navbar.scrolled {
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.3s;
}

.nav-links a:hover {
    color: white;
}

.nav-actions {
    display: flex;
    gap: 16px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: white;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 180px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-glow {
    position: absolute;
    top: -20%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 100px;
    color: #818cf8;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Outfit';
    color: white;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-visual {
    position: relative;
}

.visual-card {
    padding: 32px;
    position: relative;
    z-index: 2;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.visual-card:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.name {
    font-weight: 600;
    font-size: 1.1rem;
}

.status {
    font-size: 0.875rem;
    font-weight: 500;
}

.balance {
    font-size: 2rem;
    font-family: 'Outfit';
    font-weight: 700;
}

.chart-container {
    height: 150px;
    position: relative;
    margin-bottom: 24px;
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0) 100%);
    border-radius: 12px;
    overflow: hidden;
}

.chart-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--success);
    transform: translateY(-50%) rotate(-5deg);
    box-shadow: 0 0 10px var(--success);
}

/* Sections */
.section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--text-muted);
}

/* Steps Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    padding: 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.step-card:hover {
    transform: translateY(-8px);
}

.step-number {
    font-size: 4rem;
    font-family: 'Outfit';
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 1;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.step-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.step-card p {
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

/* Challenges Grid */
.challenges-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    align-items: center;
}

.challenge-card {
    padding: 40px 32px;
    transition: transform 0.3s ease;
}

.challenge-card:hover {
    transform: translateY(-8px);
}

.challenge-card.popular {
    background: rgba(30, 27, 75, 0.6);
    border-color: rgba(99, 102, 241, 0.3);
    transform: scale(1.05);
}

.challenge-card.popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
}

.challenge-header {
    text-align: center;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 32px;
}

.challenge-header h3 {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.challenge-header .price {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.challenge-header .price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.challenge-features {
    margin-bottom: 40px;
}

.challenge-features li {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.challenge-features li span {
    color: var(--text-muted);
}

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

.fee {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
}

/* Footer */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 64px;
    margin-bottom: 64px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
    max-width: 300px;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 12px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    padding-top: 32px;
    text-align: center;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin: 0 auto 40px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .steps-grid, .challenges-grid {
        grid-template-columns: 1fr;
    }

    .challenge-card.popular {
        transform: scale(1);
    }
    
    .challenge-card.popular:hover {
        transform: translateY(-8px);
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: 3rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero {
        padding: 140px 0 80px;
    }

    .section {
        padding: 80px 0;
    }

    .section-header h2 {
        font-size: 2.2rem;
    }

    .challenge-card {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 2.2rem !important;
    }

    .stat-value {
        font-size: 1.25rem;
    }

    .badge {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .challenge-header .price {
        font-size: 2.5rem;
    }

    .footer {
        padding: 60px 0 30px;
    }
}