/* ==================== X.COM-INSPIRED RESET ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #000000;
    --bg-secondary: #16181c;
    --bg-tertiary: #1e2024;
    --bg-hover: #1a1a1a;
    --border-color: #2f3336;
    --border-light: #3e4144;
    --text-primary: #e7e9ea;
    --text-secondary: #8b98a5;
    --text-tertiary: #6e767d;
    --accent-blue: #1d9bf0;
    --accent-blue-hover: #1a8cd8;
    --accent-green: #00ba7c;
    --accent-amber: #ffd400;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Inter', monospace;
    --transition: all 0.2s ease;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    text-decoration: underline;
}

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.05em;
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    letter-spacing: -0.03em;
}

h3 {
    font-size: 1.3rem;
    font-weight: 700;
}

p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ==================== LAYOUT ==================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

/* ==================== NAVIGATION ==================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-inner {
    display: flex;
    align-items: center;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 900;
    font-size: 1.4rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    text-decoration: none;
}

.nav-brand:hover {
    text-decoration: none;
}

.nav-logo {
    width: 38px;
    height: 38px;
    background: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: white;
    font-size: 1.3rem;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    margin-left: 48px;
    height: 64px;
    align-items: center;
}

.nav-item {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    padding: 4px 0;
    text-decoration: none;
}

.nav-arrow {
    font-size: 0.55rem;
    vertical-align: middle;
    opacity: 0.65;
    margin-left: 3px;
    display: inline-block;
    line-height: 1;
}

.nav-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.nav-item:hover .dropdown {
    display: block;
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px;
    min-width: 220px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    z-index: 1001;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
    text-decoration: none;
}

.dropdown-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    flex-shrink: 0;
}

.dropdown-icon.amber {
    background: rgba(255, 212, 0, 0.1);
}

.dropdown-icon.green {
    background: rgba(0, 186, 124, 0.1);
}

.dropdown-icon.blue {
    background: rgba(29, 155, 240, 0.1);
}

.dropdown-icon.violet {
    background: rgba(120, 86, 255, 0.1);
}

.dropdown-text {
    display: flex;
    flex-direction: column;
}

.dropdown-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.dropdown-desc {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.nav-cta {
    background: var(--accent-blue);
    color: white;
    padding: 8px 20px;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: var(--transition);
    text-decoration: none;
    margin-left: auto;
}

.nav-cta:hover {
    background: var(--accent-blue-hover);
    text-decoration: none;
    color: white;
}

/* ==================== HERO ==================== */
.hero {
    padding: 160px 0 80px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 9999px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero h1 {
    margin-bottom: 24px;
}

.hero h1 em {
    font-style: normal;
    color: var(--accent-blue);
}

.hero p {
    max-width: 640px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    text-decoration: none;
    color: white;
}

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

.btn-outline:hover {
    background: rgba(29, 155, 240, 0.1);
    text-decoration: none;
    color: var(--accent-blue);
}

/* ==================== KPI CARDS ==================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 48px;
}

.kpi-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
}

.kpi-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

.kpi-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.kpi-value {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.kpi-value.green { color: var(--accent-green); }
.kpi-value.blue { color: var(--accent-blue); }
.kpi-value.amber { color: var(--accent-amber); }
.kpi-value.rose { color: #f91880; }

.kpi-change {
    font-size: 0.85rem;
    font-weight: 600;
}

.kpi-change.up { color: var(--accent-green); }
.kpi-change.down { color: #f91880; }

/* ==================== CONTENT CARDS ==================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 48px;
}

@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
}

.card:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.card h3 {
    margin-bottom: 12px;
}

.card p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.card-tag {
    display: inline-block;
    margin-top: 16px;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(29, 155, 240, 0.1);
    color: var(--accent-blue);
}

/* ==================== SECTION HEADERS ==================== */
.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.section h2 {
    margin-bottom: 16px;
}

.section-desc {
    max-width: 640px;
    margin-bottom: 32px;
    font-size: 1.05rem;
}

/* ==================== PRICING ==================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 48px;
}

.price-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.price-card:hover {
    border-color: var(--border-light);
}

.price-card.featured {
    border-color: var(--accent-blue);
    background: linear-gradient(135deg, var(--bg-secondary), rgba(29, 155, 240, 0.05));
}

.price-card h3 {
    margin-bottom: 16px;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.price-period {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    margin-bottom: 24px;
}

.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: 24px;
}

.price-features li {
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.price-features li:last-child {
    border-bottom: none;
}

/* ==================== CTA ==================== */
.cta-section {
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    margin-bottom: 16px;
}

.cta-section p {
    max-width: 540px;
    margin: 0 auto 32px;
    font-size: 1.1rem;
}

/* ==================== FOOTER ==================== */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 48px 0;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand h3 {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-col h5 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.footer-col a {
    display: block;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    padding: 6px 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--accent-blue);
}

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

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
}

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

.modal-body {
    padding: 24px;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .section {
        padding: 60px 0;
    }
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}