/* ================================================================
   PROMZ.in — Landing Page Stylesheet
   ================================================================
   Design tokens → Base reset → Layout → Components → Sections →
   Animations → Responsive breakpoints
   ================================================================ */

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Colors */
  --color-bg:           #07070d;      /* near-black page background   */
  --color-surface:      #0f0f1a;      /* slightly lighter surface      */
  --color-surface-2:    #14142a;      /* elevated card/section surface */
  --color-border:       rgba(255,255,255,0.07);
  --color-border-light: rgba(255,255,255,0.12);

  --color-primary:      #6366f1;      /* indigo                        */
  --color-primary-h:    #7c7ffc;      /* hover / lighter               */
  --color-accent:       #8b5cf6;      /* violet accent                 */
  --color-accent-glow:  rgba(99,102,241,0.35);

  --color-text:         #f0f0f8;      /* primary text                  */
  --color-text-muted:   #9090a8;      /* secondary / muted text        */
  --color-text-faint:   #5a5a72;      /* very subtle text              */

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont,
               'Segoe UI', sans-serif;

  --text-xs:   0.75rem;    /*  12px */
  --text-sm:   0.875rem;   /*  14px */
  --text-base: 1rem;       /*  16px */
  --text-lg:   1.125rem;   /*  18px */
  --text-xl:   1.25rem;    /*  20px */
  --text-2xl:  1.5rem;     /*  24px */
  --text-3xl:  1.875rem;   /*  30px */
  --text-4xl:  2.25rem;    /*  36px */
  --text-5xl:  3rem;       /*  48px */
  --text-6xl:  3.75rem;    /*  60px */
  --text-7xl:  4.5rem;     /*  72px */

  /* Spacing */
  --sp-1:   0.25rem;
  --sp-2:   0.5rem;
  --sp-3:   0.75rem;
  --sp-4:   1rem;
  --sp-6:   1.5rem;
  --sp-8:   2rem;
  --sp-10:  2.5rem;
  --sp-12:  3rem;
  --sp-16:  4rem;
  --sp-20:  5rem;
  --sp-24:  6rem;
  --sp-32:  8rem;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Transitions */
  --ease:         cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 5vw, 3rem);
  --nav-height:    68px;
}

/* ── Inter font from Google Fonts (swap for performance) ────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

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

img, video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

ul { list-style: none; }

/* ── Layout helpers ─────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Typography helpers ─────────────────────────────────────────── */
.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--sp-4);
}

.section-heading {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--sp-6);
}

.body-text {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 52ch;
  margin-bottom: var(--sp-4);
}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background var(--duration-base) var(--ease),
              color var(--duration-base) var(--ease),
              box-shadow var(--duration-base) var(--ease),
              transform var(--duration-fast) var(--ease);
  border: none;
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Primary */
.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 0 0 var(--color-accent-glow);
}
.btn--primary:hover {
  background: var(--color-primary-h);
  box-shadow: 0 4px 24px var(--color-accent-glow);
  transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0); }

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-light);
}
.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background: rgba(99,102,241,0.06);
}

.btn--sm { padding: 0.55rem 1.2rem; font-size: var(--text-xs); }

/* ── Badge (hero status pill) ───────────────────────────────────── */
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-3) var(--sp-1) var(--sp-2);
  border-radius: var(--radius-full);
  background: rgba(99,102,241,0.12);
  border: 1px solid rgba(99,102,241,0.25);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-primary-h);
  margin-bottom: var(--sp-8);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1;  transform: scale(1);    }
  50%       { opacity: 0.6; transform: scale(1.4); }
}

/* ================================================================
   NAVIGATION
   ================================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  /* starts transparent, JS adds .nav--scrolled */
  background: transparent;
  transition: background var(--duration-slow) var(--ease),
              border-color var(--duration-slow) var(--ease),
              backdrop-filter var(--duration-slow) var(--ease);
  border-bottom: 1px solid transparent;
}

.nav--scrolled {
  background: rgba(7,7,13,0.82);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom-color: var(--color-border);
}

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

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0;
  font-weight: 800;
  font-size: var(--text-xl);
  letter-spacing: -0.03em;
  transition: opacity var(--duration-fast);
}
.nav__logo:hover { opacity: 0.85; }

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-base);
  font-weight: 800;
  margin-right: 3px;
  flex-shrink: 0;
}

.logo-text {
  color: var(--color-text);
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

/* Background image + overlay */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.55;
}

.hero__bg-overlay {
  position: absolute;
  inset: 0;
  /* Dark vignette + bottom fade for readable text */
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, transparent 0%, rgba(7,7,13,0.45) 100%),
    linear-gradient(to bottom, rgba(7,7,13,0.15) 0%, rgba(7,7,13,0.0) 40%, rgba(7,7,13,0.9) 90%, var(--color-bg) 100%);
}

/* Content */
.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: var(--sp-16);
  padding-bottom: var(--sp-32);
}

.hero__heading {
  font-size: clamp(var(--text-4xl), 7vw, var(--text-7xl));
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: #fff;
  max-width: 16ch;
  margin-bottom: var(--sp-6);
  text-shadow: 0 2px 40px rgba(0,0,0,0.6);
}

.hero__sub {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: rgba(240,240,248,0.78);
  max-width: 52ch;
  line-height: 1.7;
  margin-bottom: var(--sp-10);
}

.hero__actions {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--sp-6);
}

.hero__note {
  font-size: var(--text-sm);
  color: rgba(240,240,248,0.4);
  letter-spacing: 0.02em;
}

/* .br-desktop: only a visual break on large screens */
@media (max-width: 767px) {
  .br-desktop { display: none; }
}

/* Scroll cue arrow at bottom center */
.scroll-cue {
  position: absolute;
  bottom: var(--sp-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: rgba(240,240,248,0.3);
  display: flex;
  transition: color var(--duration-base);
  animation: bounce-y 2.8s ease-in-out infinite;
}
.scroll-cue:hover { color: rgba(240,240,248,0.7); }

@keyframes bounce-y {
  0%, 100% { transform: translateX(-50%) translateY(0);   }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ================================================================
   ABOUT SECTION
   ================================================================ */
.about {
  padding-block: clamp(var(--sp-16), 10vw, var(--sp-32));
  background: var(--color-surface);
  position: relative;
}

/* Subtle top border glow */
.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0.4;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--sp-10), 6vw, var(--sp-20));
  align-items: center;
}

.about__text {}

/* Category pills */
.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-8);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  transition: border-color var(--duration-base), color var(--duration-base), background var(--duration-base);
}

.pill:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
  background: rgba(99,102,241,0.08);
}

/* Image side */
.about__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about__img-wrap {
  position: relative;
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.about__img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  display: block;
}

/* Soft glow behind image */
.about__img-glow {
  position: absolute;
  inset: -30px;
  background: radial-gradient(ellipse at center, var(--color-accent-glow), transparent 70%);
  z-index: -1;
  border-radius: inherit;
  filter: blur(40px);
}

/* ================================================================
   COMING SOON SECTION
   ================================================================ */
.coming-soon {
  padding-block: clamp(var(--sp-20), 12vw, var(--sp-32));
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Radial glow backdrop */
.coming-soon::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(700px, 90vw);
  height: min(700px, 90vh);
  background: radial-gradient(ellipse at center, rgba(99,102,241,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.coming-soon__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cs-icon {
  color: var(--color-primary);
  margin-bottom: var(--sp-8);
  opacity: 0.8;
  animation: spin-slow 18s linear infinite;
}

@keyframes spin-slow {
  to { transform: rotate(360deg); }
}

.coming-soon__heading {
  font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--sp-6);
}

.coming-soon__text {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  color: var(--color-text-muted);
  max-width: 44ch;
  line-height: 1.75;
  margin-bottom: var(--sp-10);
}

.coming-soon__cta {
  display: inline-flex;
  align-items: center;
  padding: var(--sp-3) var(--sp-8);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  transition: border-color var(--duration-base),
              color var(--duration-base),
              background var(--duration-base),
              box-shadow var(--duration-base);
}

.coming-soon__cta:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
  background: rgba(99,102,241,0.08);
  box-shadow: 0 0 20px rgba(99,102,241,0.15);
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--sp-6);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.footer__copy {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.footer__links {
  display: flex;
  gap: var(--sp-6);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  transition: color var(--duration-fast);
}
.footer__link:hover { color: var(--color-text-muted); }

/* ================================================================
   SCROLL-TRIGGERED FADE-IN ANIMATIONS
   Elements with .reveal start invisible; JS adds .is-visible
   ================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease),
              transform var(--duration-slow) var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease),
              transform var(--duration-slow) var(--ease);
}
.reveal-stagger.is-visible > *:nth-child(1) { opacity:1; transform:translateY(0); transition-delay: 0ms;   }
.reveal-stagger.is-visible > *:nth-child(2) { opacity:1; transform:translateY(0); transition-delay: 80ms;  }
.reveal-stagger.is-visible > *:nth-child(3) { opacity:1; transform:translateY(0); transition-delay: 160ms; }
.reveal-stagger.is-visible > *:nth-child(4) { opacity:1; transform:translateY(0); transition-delay: 240ms; }
.reveal-stagger.is-visible > *:nth-child(5) { opacity:1; transform:translateY(0); transition-delay: 320ms; }
.reveal-stagger.is-visible > *:nth-child(6) { opacity:1; transform:translateY(0); transition-delay: 400ms; }

/* ================================================================
   RESPONSIVE — Tablet (≤ 900px)
   ================================================================ */
@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
  }

  .about__visual {
    order: -1; /* image above text on smaller screens */
  }

  .about__img-wrap {
    max-width: 400px;
  }

  .body-text {
    max-width: none;
  }
}

/* ================================================================
   RESPONSIVE — Mobile (≤ 600px)
   ================================================================ */
@media (max-width: 600px) {
  :root {
    --nav-height: 60px;
  }

  .nav__logo { font-size: var(--text-lg); }

  .hero__content {
    padding-top: var(--sp-12);
    padding-bottom: var(--sp-24);
  }

  .hero__heading {
    letter-spacing: -0.025em;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
    max-width: 320px;
  }

  .about__img-wrap { max-width: 100%; }

  .coming-soon__heading { letter-spacing: -0.02em; }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-3);
  }

  .category-pills { gap: var(--sp-2); }
}

/* ================================================================
   REDUCED MOTION — respect user preference
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}