/* ========== CSS Variables ========== */
:root {
    --primary: #f0b90b;
    --primary-dark: #d4a308;
    --primary-light: #ffe566;
    --dark: #0b0e11;
    --dark-2: #1e2329;
    --dark-3: #2b3139;
    --gray: #848e9c;
    --gray-light: #eaecef;
    --white: #ffffff;
    --green: #0ecb81;
    --red: #f6465d;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul { list-style: none; }

img { max-width: 100%; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--dark);
    box-shadow: 0 4px 15px rgba(240, 185, 11, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(240, 185, 11, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray);
    color: var(--white);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(11, 14, 17, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 10px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i { font-size: 1.8rem; }

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

.nav-links a {
    color: var(--gray);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.admin-link {
    color: var(--primary) !important;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--dark-2);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 90%;
    max-width: 420px;
    position: relative;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--gray);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover { color: var(--white); }

.modal h2 {
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--gray);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark-3);
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--white);
    font-size: 0.95rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
}

.form-tip {
    text-align: center;
    color: var(--gray);
    font-size: 0.85rem;
    margin-top: 16px;
}

/* ========== Hero ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(240, 185, 11, 0.1);
    border: 1px solid rgba(240, 185, 11, 0.3);
    border-radius: 20px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.hero p {
    color: var(--gray);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 540px;
}

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

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

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

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--gray);
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-card {
    background: var(--dark-2);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow);
}

.hero-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-weight: 600;
}

.price-up { color: var(--green); }
.price-down { color: var(--red); }

.hero-card-price {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.hero-card-chart svg {
    width: 100%;
    height: auto;
}

.hero-card-footer {
    margin-top: 16px;
    color: var(--gray);
    font-size: 0.85rem;
}

.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.05;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: var(--primary-light);
    top: 50%;
    left: 30%;
}

/* ========== Section Headers ========== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* ========== Market ========== */
.market {
    padding: 100px 0;
    background: var(--dark-2);
}

.market-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 20px;
    background: transparent;
    border: 1px solid var(--dark-3);
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--dark);
    border-color: var(--primary);
}

.market-search {
    position: relative;
    max-width: 400px;
    margin: 0 auto 32px;
}

.market-search i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

.market-search input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--dark-3);
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--white);
    font-size: 0.95rem;
    transition: var(--transition);
}

.market-search input:focus {
    outline: none;
    border-color: var(--primary);
}

.coins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.coin-card {
    background: var(--dark);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
}

.coin-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
    border-color: var(--primary);
}

.coin-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.coin-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.coin-info h3 {
    font-size: 1.1rem;
}

.coin-symbol {
    color: var(--gray);
    font-size: 0.85rem;
}

.coin-price {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.coin-change {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
    margin-bottom: 8px;
}

.coin-volume {
    color: var(--gray);
    font-size: 0.85rem;
}

/* ========== Features ========== */
.features {
    padding: 100px 0;
}

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

.feature-card {
    background: var(--dark-2);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: rgba(240, 185, 11, 0.3);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(240, 185, 11, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.feature-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========== News ========== */
.news {
    padding: 100px 0;
    background: var(--dark-2);
}

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

.news-card {
    background: var(--dark);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

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

.news-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.news-content {
    padding: 24px;
}

.news-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(240, 185, 11, 0.1);
    color: var(--primary);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-content h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-content p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.news-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray);
    font-size: 0.85rem;
}

.read-more {
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.read-more:hover {
    gap: 8px;
}

/* ========== CTA ========== */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--dark), var(--dark-2));
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-content p {
    color: var(--gray);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* ========== About ========== */
.about {
    padding: 100px 0;
}

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

.about-text p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 1.05rem;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 32px;
}

.about-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.about-stat .stat-number {
    font-size: 2rem;
}

.about-stat span:last-child {
    color: var(--gray);
    font-size: 0.9rem;
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-card {
    background: var(--dark-2);
    border: 1px solid rgba(240, 185, 11, 0.2);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow);
}

.about-card i {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.about-card span {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

.about-card .sub {
    color: var(--gray);
    font-size: 1rem;
    font-weight: 400;
    margin-top: 8px;
}

/* ========== Footer ========== */
.footer {
    background: var(--dark-2);
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

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

.footer-brand p {
    color: var(--gray);
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--dark-3);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: var(--dark);
}

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-links a {
    display: block;
    color: var(--gray);
    margin-bottom: 12px;
    font-size: 0.9rem;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray);
    font-size: 0.85rem;
}

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a {
    color: var(--gray);
}

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

/* ========== Animations ========== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero p { margin: 0 auto 32px; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { display: none; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .about-content { grid-template-columns: 1fr; text-align: center; }
    .about-stats { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(11, 14, 17, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        padding: 20px;
        gap: 16px;
        display: none;
    }
    .nav-links.active { display: flex; }
    .hamburger { display: flex; }
    .hero h1 { font-size: 2.5rem; }
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 1.2rem; }
    .features-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .section-header h2 { font-size: 2rem; }
    .nav-actions .btn { display: none; }
    .nav-actions .btn-sm { display: inline-flex; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .hero-actions { flex-direction: column; }
    .hero-stats { flex-wrap: wrap; justify-content: center; }
    .coins-grid { grid-template-columns: 1fr; }
    .market-filter { gap: 8px; }
    .filter-btn { padding: 6px 14px; font-size: 0.8rem; }
}