/* 
  Hybrid Tracker Website — Premium Dark Design
  Inspired by: Flighty, Tripsy, Filtru
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
    --sys-blue: #0A84FF;
    --sys-orange: #FF9F0A;
    --sys-green: #30D158;
    --sys-yellow: #FFD60A;
    --sys-red: #FF453A;

    --bg-primary: #000000;
    --bg-section: #0a0a0a;
    --bg-card: #141414;
    --bg-card-hover: #1a1a1a;
    --text-primary: #f5f5f7;
    --text-secondary: #86868b;
    --text-tertiary: #48484a;
    --border: rgba(255, 255, 255, 0.08);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 1100px;
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ========== NAV ========== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: background 0.3s var(--ease), backdrop-filter 0.3s var(--ease);
}

.nav.scrolled {
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

.lang-switch {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    padding: 3px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.lang-switch a {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 6px;
    color: var(--text-tertiary);
    transition: all 0.2s;
}

.lang-switch a.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.lang-switch a:hover {
    color: var(--text-secondary);
}

/* ========== HERO ========== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(10, 132, 255, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--sys-green);
    margin-bottom: 24px;
}

.hero-badge span {
    width: 6px;
    height: 6px;
    background: var(--sys-green);
    border-radius: 50%;
}

.hero h1 {
    font-size: clamp(42px, 7vw, 72px);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1.05;
    max-width: 700px;
    margin-bottom: 20px;
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--sys-green), var(--sys-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.6;
    margin-bottom: 40px;
}

.hero-cta {
    display: inline-block;
    transition: transform 0.3s var(--ease), opacity 0.3s;
}

.hero-cta:hover {
    transform: scale(1.05);
}

.hero-cta img {
    height: 54px;
}

.hero-screenshot {
    margin-top: 64px;
    position: relative;
    z-index: 1;
}

.hero-screenshot img {
    max-height: 620px;
    border-radius: 32px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border);
}

/* ========== SECTIONS ========== */
.section {
    padding: 120px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-label {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 500px;
    line-height: 1.7;
}

/* ========== FEATURE ROW ========== */
.feature-row {
    display: flex;
    align-items: center;
    gap: 80px;
    padding: 100px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-media {
    flex: 1;
    display: flex;
    justify-content: center;
}

.feature-media img {
    max-height: 560px;
    border-radius: 28px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border);
    transition: transform 0.5s var(--ease);
}

.feature-media img:hover {
    transform: translateY(-8px);
}

/* ========== FEATURE CHIPS (last screenshot) ========== */
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.chip::before {
    content: '✓';
    color: var(--sys-green);
    font-weight: 800;
}

/* ========== CTA BANNER ========== */
.cta-banner {
    text-align: center;
    padding: 120px 24px;
    position: relative;
}

.cta-banner::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(48, 209, 88, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-banner h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
}

.cta-banner p {
    color: var(--text-secondary);
    font-size: 17px;
    margin-bottom: 32px;
}

/* ========== DIVIDER ========== */
.divider {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 1px;
    background: var(--border);
}

/* ========== FOOTER ========== */
.footer {
    padding: 40px 24px;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copy {
    font-size: 13px;
    color: var(--text-tertiary);
}

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

.footer-links a {
    font-size: 13px;
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

/* ========== PRIVACY PAGE ========== */
.privacy-page {
    max-width: 720px;
    margin: 0 auto;
    padding: 140px 24px 80px;
}

.privacy-page h1 {
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.privacy-page .updated {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-bottom: 48px;
}

.privacy-page h2 {
    font-size: 22px;
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.privacy-page p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.privacy-page ul {
    list-style: none;
    padding: 0;
    margin-bottom: 16px;
}

.privacy-page ul li {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    padding-left: 20px;
    position: relative;
}

.privacy-page ul li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--text-tertiary);
}

.privacy-intro {
    font-size: 18px;
    color: var(--text-secondary);
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    margin-bottom: 48px;
    line-height: 1.7;
}

.privacy-intro strong {
    color: var(--sys-green);
}

/* ========== REVEAL ANIMATION ========== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

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

    .feature-row,
    .feature-row.reverse {
        flex-direction: column;
        text-align: center;
        gap: 48px;
        padding: 60px 24px;
    }

    .section-desc {
        margin: 0 auto;
    }

    .hero-screenshot img {
        max-height: 400px;
    }

    .feature-media img {
        max-height: 400px;
    }

    .chips {
        justify-content: center;
    }

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

    .section {
        padding: 80px 24px;
    }
}