/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --accent: #F7931A;
    --accent-hover: #e8850f;
    --accent-glow: rgba(247, 147, 26, 0.3);
    --border: #2a2a2a;
    --gradient: linear-gradient(135deg, #F7931A 0%, #ffb347 100%);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

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

.btn-outline:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-white {
    background: #fff;
    color: #000;
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255,255,255,0.2);
}

.btn-outline-white {
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    background: transparent;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(10,10,10,0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    font-size: 14px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero */
.hero {
    padding: 160px 0 80px;
    background: radial-gradient(ellipse at top, rgba(247,147,26,0.1) 0%, transparent 50%);
}

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

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

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

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Phone Mockup */
.hero-phone {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 280px;
    height: 580px;
    background: var(--bg-card);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px var(--border);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: #000;
    border-radius: 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 32px;
    padding: 48px 20px 20px;
    overflow: hidden;
}

.phone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.phone-time {
    font-size: 14px;
    font-weight: 600;
}

.phone-icons {
    display: flex;
    gap: 6px;
    opacity: 0.8;
}

.app-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.app-balance {
    text-align: center;
    padding: 24px;
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
}

.balance-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.balance-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}

.balance-usd {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.app-stats-row {
    display: flex;
    gap: 12px;
}

.app-stat {
    flex: 1;
    padding: 16px;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    text-align: center;
}

.app-stat-label {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.app-stat-value {
    font-size: 16px;
    font-weight: 600;
}

.app-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 80px;
    padding: 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
}

.chart-bar {
    width: 24px;
    background: rgba(247,147,26,0.3);
    border-radius: 4px;
    transition: var(--transition);
}

.chart-bar.active {
    background: var(--accent);
}

.app-btn {
    width: 100%;
    padding: 14px;
    background: var(--gradient);
    color: #000;
    font-weight: 600;
    border-radius: 12px;
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-num {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 16px;
    padding: 8px 16px;
    background: rgba(247,147,26,0.1);
    border-radius: 20px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* Features */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 40px 32px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(247,147,26,0.1);
    border-radius: 16px;
    color: var(--accent);
    margin-bottom: 24px;
}

.feature-step {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 12px;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* How it works */
.how-it-works {
    padding: 100px 0;
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.how-item {
    display: flex;
    gap: 24px;
    padding: 32px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.how-item:hover {
    border-color: var(--accent);
}

.how-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--accent);
    opacity: 0.3;
    line-height: 1;
}

.how-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.how-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Video Section */
.video-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.video-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.video-placeholder {
    aspect-ratio: 16/9;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.video-placeholder:hover {
    border-color: var(--accent);
}

.video-placeholder span {
    color: var(--text-muted);
    font-size: 14px;
}

.play-btn {
    transition: var(--transition);
}

.video-placeholder:hover .play-btn {
    transform: scale(1.1);
}

/* Reviews */
.reviews {
    padding: 100px 0;
}

.reviews-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.rating-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(247,147,26,0.1);
    border-radius: 20px;
}

.rating-badge span {
    font-weight: 700;
    color: var(--accent);
}

.reviews-count {
    color: var(--text-secondary);
    font-size: 14px;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.review-card {
    padding: 32px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.review-stars {
    color: var(--accent);
    font-size: 18px;
    margin-bottom: 16px;
}

.review-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.review-author {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

.author-name {
    font-weight: 600;
}

.author-date {
    color: var(--text-muted);
}

/* FAQ */
.faq {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    font-size: 17px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--accent);
}

.faq-icon {
    color: var(--text-muted);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding-bottom: 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    padding: 120px 0;
    background: var(--gradient);
    text-align: center;
}

.cta-content h2 {
    font-size: 48px;
    font-weight: 700;
    color: #000;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(0,0,0,0.7);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 360px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-subscribe h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.subscribe-form {
    display: flex;
    gap: 12px;
}

.subscribe-form input {
    padding: 12px 16px;
    font-size: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    width: 280px;
}

.subscribe-form input::placeholder {
    color: var(--text-muted);
}

.subscribe-form input:focus {
    outline: none;
    border-color: var(--accent);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-muted);
    transition: var(--transition);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }

    .features-grid,
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-right .btn,
    .lang-switcher {
        display: none;
    }

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

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-desc {
        margin: 0 auto 32px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

    .hero-phone {
        order: -1;
        margin-bottom: 40px;
    }

    .phone-mockup {
        width: 240px;
        height: 500px;
    }

    .section-title {
        font-size: 32px;
    }

    .features-grid,
    .how-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }

    .cta-content h2 {
        font-size: 32px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
    }

    .subscribe-form {
        flex-direction: column;
    }

    .subscribe-form input {
        width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.phone-mockup {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.chart-bar.active {
    animation: pulse 2s ease-in-out infinite;
}