/* ================================================
   UploadMetaAds — Landing Page Styles
   ================================================ */

/* ---------- Design Tokens ---------- */
:root {
  --color-primary: #1a56ff;
  --color-primary-dark: #0f3fc7;
  --color-primary-light: #e8eeff;
  --color-accent: #00c2ff;
  --color-text: #0a0f1e;
  --color-text-secondary: #4a5568;
  --color-text-muted: #8494a7;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fc;
  --color-bg-dark: #0a0f1e;
  --color-border: #e2e6ef;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(10, 15, 30, 0.06);
  --shadow-md: 0 4px 16px rgba(10, 15, 30, 0.08);
  --shadow-lg: 0 8px 32px rgba(10, 15, 30, 0.1);
  --shadow-nav: 0 1px 8px rgba(10, 15, 30, 0.08);
  --max-width: 1140px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--transition), transform 0.7s var(--transition);
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--color-primary);
  color: #fff;
  white-space: nowrap;
}

.btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 86, 255, 0.3);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn--lg {
  padding: 14px 28px;
  font-size: 15px;
  border-radius: var(--radius-md);
}

.btn--white {
  background: #fff;
  color: var(--color-primary);
}

.btn--white:hover {
  background: #f0f4ff;
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
}

/* ================================================
   NAVIGATION
   ================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transition);
}

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

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.nav__logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.nav__link:hover {
  color: var(--color-text);
}

/* Burger */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 110;
}

.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav__burger.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__burger.is-open span:nth-child(2) {
  opacity: 0;
}

.nav__burger.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ================================================
   HERO
   ================================================ */
.hero {
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
  background: var(--color-bg-dark);
  color: #fff;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__gradient {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 80%;
  height: 120%;
  background: radial-gradient(ellipse at center, rgba(26, 86, 255, 0.25) 0%, rgba(0, 194, 255, 0.08) 40%, transparent 70%);
  filter: blur(60px);
}

.hero__grid-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}

.hero__inner {
  position: relative;
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(0, 194, 255, 0.08);
  border: 1px solid rgba(0, 194, 255, 0.15);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero__secondary-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

.hero__secondary-link:hover {
  color: #fff;
}

.hero__proof {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.02em;
}

/* ================================================
   VALUE PROPS
   ================================================ */
.values {
  padding: 80px 0;
  background: var(--color-bg);
}

.values__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.values__card {
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.values__card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.values__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  margin-bottom: 20px;
}

.values__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.values__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ================================================
   HOW IT WORKS
   ================================================ */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-header__title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.steps {
  padding: 80px 0;
  background: var(--color-bg-alt);
}

.steps__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  counter-reset: step;
}

.steps__card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
}

.steps__number {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: 16px;
}

.steps__title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.steps__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ================================================
   FEATURES
   ================================================ */
.features {
  padding: 80px 0;
  background: var(--color-bg);
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.features__card {
  padding: 28px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.features__card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md);
  transform: translateY(-2px);
}

.features__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  margin-bottom: 18px;
}

.features__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.features__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ================================================
   CTA BAND
   ================================================ */
.cta-band {
  position: relative;
  padding: 80px 0;
  background: var(--color-bg-dark);
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.cta-band__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(26, 86, 255, 0.2) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(0, 194, 255, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
}

.cta-band__title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.cta-band__text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 32px;
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  padding: 56px 0 40px;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.footer__brand .nav__logo {
  margin-bottom: 12px;
}

.footer__copy {
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__heading {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

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

.footer__link:hover {
  color: var(--color-primary);
}

/* ================================================
   LEGAL / PROSE PAGES
   ================================================ */
.legal-page {
  padding: 120px 0 80px;
}

.legal-page__header {
  margin-bottom: 40px;
}

.legal-page__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 8px;
}

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

.prose {
  max-width: 720px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.prose h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin: 40px 0 16px;
  letter-spacing: -0.02em;
}

.prose h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin: 28px 0 12px;
}

.prose p {
  margin-bottom: 16px;
}

.prose ul,
.prose ol {
  margin: 0 0 16px 24px;
}

.prose li {
  margin-bottom: 8px;
}

.prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.prose a:hover {
  color: var(--color-primary-dark);
}

.prose strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Data deletion CTA */
.deletion-cta {
  margin-top: 32px;
  padding: 28px;
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  text-align: center;
}

.deletion-cta p {
  margin-bottom: 16px;
  color: var(--color-text);
  font-weight: 500;
}

.deletion-cta .btn {
  font-size: 15px;
  color: #fff;
  text-decoration: none;
}

.deletion-cta .btn:hover {
  color: #fff;
}

/* ================================================
   RESPONSIVE — TABLET (768px+)
   ================================================ */
@media (min-width: 768px) {
  .values__grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .hero {
    padding: 160px 0 120px;
  }

  .values,
  .steps,
  .features {
    padding: 100px 0;
  }

  .cta-band {
    padding: 100px 0;
  }
}

/* ================================================
   RESPONSIVE — DESKTOP (1024px+)
   ================================================ */
@media (min-width: 1024px) {
  .steps__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero {
    padding: 180px 0 140px;
  }
}

/* ================================================
   RESPONSIVE — MOBILE NAV (<768px)
   ================================================ */
@media (max-width: 767px) {
  .nav__burger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-bg);
    padding: 80px 28px 28px;
    box-shadow: -8px 0 32px rgba(10, 15, 30, 0.12);
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 105;
  }

  .nav__links.is-open {
    transform: translateX(0);
  }

  .nav__link {
    font-size: 16px;
    padding: 14px 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__links .btn {
    margin-top: 16px;
    width: 100%;
    justify-content: center;
  }
}