/* ============================================================
   ContentFlow — Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── CSS Variables ── */
:root {
  --color-bg: #0a0a0f;
  --color-bg-glass: rgba(255, 255, 255, 0.04);
  --color-bg-card: rgba(255, 255, 255, 0.06);
  --color-bg-card-hover: rgba(255, 255, 255, 0.1);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-text-primary: #f0f0f5;
  --color-text-secondary: #8a8a9a;
  --color-text-muted: #5a5a6a;

  /* TikTok-inspired accent colors */
  --color-accent-cyan: #25f4ee;
  --color-accent-pink: #fe2c55;
  --color-accent-purple: #7c3aed;

  --gradient-primary: linear-gradient(135deg, #25f4ee, #7c3aed, #fe2c55);
  --gradient-hero: linear-gradient(180deg, rgba(37, 244, 238, 0.08) 0%, rgba(124, 58, 237, 0.05) 50%, transparent 100%);
  --gradient-card: linear-gradient(135deg, rgba(37, 244, 238, 0.06), rgba(124, 58, 237, 0.04));

  --shadow-glow: 0 0 60px rgba(37, 244, 238, 0.08), 0 0 120px rgba(124, 58, 237, 0.05);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(37, 244, 238, 0.06);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s 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, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--color-accent-pink);
}

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

/* ── Background Effects ── */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 600px 600px at 20% 10%, rgba(37, 244, 238, 0.06), transparent),
    radial-gradient(ellipse 500px 500px at 80% 30%, rgba(124, 58, 237, 0.06), transparent),
    radial-gradient(ellipse 400px 400px at 50% 70%, rgba(254, 44, 85, 0.04), transparent);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── Container ── */
.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.container--narrow {
  width: min(800px, 92%);
  margin: 0 auto;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 5%;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-smooth);
}

.nav.scrolled {
  box-shadow: var(--shadow-glow);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: #000;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
}

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

.nav__cta {
  padding: 10px 24px;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  color: #000 !important;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(37, 244, 238, 0.3);
  color: #000 !important;
}

/* ── Hero Section ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 5% 80px;
  position: relative;
  background: var(--gradient-hero);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 100px;
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

.hero__badge span {
  color: var(--color-accent-cyan);
}

.hero__title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.7;
  font-weight: 400;
}

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

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-xl);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--gradient-primary);
  color: #000;
  box-shadow: 0 4px 20px rgba(37, 244, 238, 0.2);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37, 244, 238, 0.35);
  color: #000;
}

.btn--secondary {
  background: var(--color-bg-glass);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn--secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  color: var(--color-text-primary);
}

/* ── Section Layout ── */
.section {
  padding: 100px 0;
  position: relative;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  margin-bottom: 16px;
}

.section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Feature Cards ── */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.feature-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card__icon--cyan {
  background: rgba(37, 244, 238, 0.1);
  color: var(--color-accent-cyan);
}

.feature-card__icon--pink {
  background: rgba(254, 44, 85, 0.1);
  color: var(--color-accent-pink);
}

.feature-card__icon--purple {
  background: rgba(124, 58, 237, 0.1);
  color: var(--color-accent-purple);
}

.feature-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ── How It Works ── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
  counter-reset: step;
}

.step {
  text-align: center;
  padding: 40px 24px;
  position: relative;
}

.step__number {
  font-size: 4rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.step__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step__desc {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ── Stats Bar ── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  padding: 48px;
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
}

.stat {
  text-align: center;
}

.stat__value {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat__label {
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: 4px;
}

/* ── CTA Section ── */
.cta-section {
  text-align: center;
  padding: 100px 5%;
  background: var(--gradient-hero);
  border-top: 1px solid var(--color-border);
}

.cta-section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta-section__desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Footer ── */
.footer {
  padding: 60px 5% 32px;
  border-top: 1px solid var(--color-border);
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand-desc {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 300px;
  line-height: 1.7;
}

.footer__col-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ── Legal Pages ── */
.legal-page {
  padding-top: 120px;
  padding-bottom: 80px;
}

.legal-page h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.legal-page .last-updated {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  margin-bottom: 48px;
}

.legal-page h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

.legal-page h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--color-accent-cyan);
}

.legal-page p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.legal-page ul,
.legal-page ol {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  padding-left: 24px;
}

.legal-page li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.legal-page strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.legal-page a {
  color: var(--color-accent-cyan);
}

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

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

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

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .hero {
    padding: 100px 5% 60px;
  }

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

  .features__grid {
    grid-template-columns: 1fr;
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .stats {
    grid-template-columns: 1fr 1fr;
    padding: 32px 24px;
  }
}