/* ═══════════════════════════════════════════════════════════
   Serene Reels — shared design system
   Brand wordmark lives in HTML (.nav-logo). To rename the product,
   find/replace "Serene<span>Reels</span>" + <title>/meta across pages.
   ═══════════════════════════════════════════════════════════ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #f7f8fc;
  --bg-card: #ffffff;
  --bg-card-solid: #ffffff;
  --border: rgba(17,17,26,0.10);
  --border-glow: rgba(17,17,26,0.32);
  --text: #15151d;
  --text-dim: #55555f;
  --text-muted: #86868f;
  --purple: #15151d;
  --purple-light: #15151d;
  --cyan: #15151d;
  --pink: #15151d;
  --gradient: #15151d;
  --gradient-warm: #15151d;
  --font: 'Inter Tight', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --maxw: 1200px;
}

html { scroll-behavior: smooth; overflow-x: hidden; }
body { font-family: var(--font-body); background: var(--bg); color: var(--text); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

/* ═══ BACKDROP ═══ */
.dot-grid { position: fixed; inset: 0; z-index: 0; pointer-events: none; background-image: radial-gradient(circle, rgba(17,17,26,0.05) 1px, transparent 1px); background-size: 32px 32px; }
.particles-global { display: none; position: fixed; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; contain: strict; }
.pg { position: absolute; border-radius: 50%; opacity: 0; bottom: -3%; will-change: transform, opacity; }
.pg:nth-child(1){width:3px;height:3px;background:#8b5cf6;left:4%;animation:pgUp 9s linear infinite 0s}
.pg:nth-child(2){width:2px;height:2px;background:#06d6d0;left:11%;animation:pgUp 11s linear infinite 1.2s}
.pg:nth-child(3){width:4px;height:4px;background:rgba(139,92,246,0.7);left:18%;animation:pgUp 8s linear infinite .4s}
.pg:nth-child(4){width:2px;height:2px;background:rgba(255,255,255,0.5);left:26%;animation:pgUp 10s linear infinite 2.3s}
.pg:nth-child(5){width:3px;height:3px;background:#06d6d0;left:33%;animation:pgUp 12s linear infinite .9s}
.pg:nth-child(6){width:2px;height:2px;background:#8b5cf6;left:40%;animation:pgUp 9s linear infinite 3.1s}
.pg:nth-child(7){width:5px;height:5px;background:rgba(244,63,157,0.6);left:47%;animation:pgUp 13s linear infinite 1.6s}
.pg:nth-child(8){width:2px;height:2px;background:#06d6d0;left:54%;animation:pgUp 10s linear infinite .2s}
.pg:nth-child(9){width:3px;height:3px;background:rgba(255,255,255,0.4);left:61%;animation:pgUp 8s linear infinite 2.7s}
.pg:nth-child(10){width:2px;height:2px;background:#8b5cf6;left:67%;animation:pgUp 11s linear infinite 1.4s}
.pg:nth-child(11){width:4px;height:4px;background:#06d6d0;left:74%;animation:pgUp 9s linear infinite .6s}
.pg:nth-child(12){width:2px;height:2px;background:rgba(244,63,157,0.7);left:81%;animation:pgUp 12s linear infinite 3.6s}
@keyframes pgUp { 0%{opacity:0;transform:translate(0,0)}6%{opacity:.9}94%{opacity:.7}100%{opacity:0;transform:translate(18px,-110vh)} }

/* ═══ ANNOUNCEMENT BANNER ═══ */
.topbar { position: relative; z-index: 1001; background: linear-gradient(90deg, rgba(244,63,157,0.14), rgba(139,92,246,0.14), rgba(6,214,208,0.12)); border-bottom: 1px solid var(--border); text-align: center; font-size: 13px; font-weight: 500; color: var(--text); padding: 9px 16px; letter-spacing: .2px; }
.topbar a { color: var(--purple-light); font-weight: 700; }
.topbar .dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); margin-right: 8px; box-shadow: 0 0 8px var(--cyan); animation: blink 1.8s ease-in-out infinite; }
@keyframes blink { 0%,100%{opacity:1}50%{opacity:.35} }

/* ═══ NAV ═══ */
.nav { position: sticky; top: 0; left: 0; right: 0; z-index: 1000; padding: 14px 40px; background: rgba(255,255,255,0.82); backdrop-filter: blur(24px) saturate(1.4); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1280px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font); font-weight: 900; font-size: 30px; letter-spacing: 0.2px; display: inline-flex; flex-direction: column; line-height: 1; }
.nav-logo span { color: var(--purple-light); }
.nav-logo .by { font-family: var(--font-body); font-weight: 500; font-size: 10px; color: var(--text-muted); letter-spacing: .6px; margin-left: 0; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links li { list-style: none; }
.nav-links li.mob-only { display: none; }
.nav-links a:not(.btn-pill):not(.nav-cta-btn) { font-size: 14px; font-weight: 500; color: var(--text-dim); transition: color 0.3s; }
.nav-links a:not(.btn-pill):not(.nav-cta-btn):hover { color: var(--text); }
.nav-right { display: flex; align-items: center; gap: 18px; }
.nav-login { font-size: 14px; font-weight: 600; color: var(--text-dim); transition: color .3s; }
.nav-login:hover { color: var(--text); }
.hamburger { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }

/* ═══ BUTTONS ═══ */
.btn-pill { display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 999px; font-family: var(--font-body); font-size: 14px; font-weight: 700; cursor: pointer; border: none; transition: all .3s; background: var(--text); color: #fff; box-shadow: 0 4px 18px rgba(17,17,26,0.18); }
.btn-pill:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(17,17,26,0.28); }
.btn-pill svg { width: 16px; height: 16px; }
.btn-lg { padding: 16px 34px; font-size: 15px; }

.btn-glow { display: inline-flex; align-items: center; gap: 10px; padding: 16px 36px; border-radius: 14px; font-family: var(--font-body); font-size: 15px; font-weight: 700; border: none; cursor: pointer; transition: all 0.4s; background: #09090b; color: #f0f0f5; position: relative; z-index: 1; overflow: hidden; box-shadow: 0 1px 0 0 rgba(255,255,255,0.05) inset, 0 -1px 0 0 rgba(0,0,0,0.6) inset, 0 4px 14px rgba(0,0,0,0.6); }
.btn-glow::before { content: ''; position: absolute; top: 50%; left: 50%; width: 200%; height: 200%; margin-left: -100%; margin-top: -100%; background: conic-gradient(from 0deg, transparent 0%, #06d6d0 10%, #a78bfa 20%, transparent 30%, transparent 70%, #f43f9d 80%, #06d6d0 90%, transparent 100%); animation: shimmer 6s linear infinite; z-index: -2; }
.btn-glow::after { content: ''; position: absolute; inset: 2px; border-radius: 12px; z-index: -1; background: #09090b; }
@keyframes shimmer { to { transform: rotate(360deg); } }
.btn-glow:hover { transform: translateY(-2px); box-shadow: 0 0 32px rgba(139,92,246,0.3), 0 0 64px rgba(6,214,208,0.15); }
.btn-glow:hover::before { filter: brightness(1.4); }

.btn-ghost { display: inline-flex; align-items: center; gap: 8px; padding: 16px 30px; border-radius: 14px; font-family: var(--font-body); font-size: 15px; font-weight: 600; border: 1px solid var(--border); color: var(--text-dim); background: transparent; cursor: pointer; transition: all 0.3s; }
.btn-ghost:hover { border-color: rgba(17,17,26,0.22); color: var(--text); background: rgba(17,17,26,0.03); }

/* ═══ SECTION COMMONS ═══ */
section { position: relative; z-index: 2; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: 4px; color: var(--purple-light); font-weight: 700; margin-bottom: 18px; }
.h-sec { font-family: var(--font); font-weight: 900; font-size: clamp(32px, 5vw, 54px); line-height: 1.05; letter-spacing: -1.5px; margin-bottom: 18px; }
.grad { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.grad-warm { background: var(--gradient-warm); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.brand { background: var(--gradient-warm); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: -0.5px; }
.sec-desc { font-size: 17px; color: var(--text-dim); line-height: 1.7; max-width: 620px; }
.center { text-align: center; }
.center .sec-desc { margin-left: auto; margin-right: auto; }

/* ═══ FOOTER ═══ */
footer { border-top: 1px solid var(--border); padding: 64px 0 40px; position: relative; z-index: 2; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-top: 16px; max-width: 280px; }
.footer-col h4 { font-family: var(--font); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 20px; color: var(--text-dim); }
.footer-col a { display: block; font-size: 14px; color: var(--text-muted); margin-bottom: 14px; transition: color 0.3s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { padding-top: 32px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; font-size: 13px; color: var(--text-muted); gap: 12px; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
  .container { padding: 0 28px; }
  .nav { padding: 14px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: fixed; top: 0; left: 0; right: 0; background: rgba(255,255,255,0.99); flex-direction: column; align-items: center; gap: 2px; z-index: 999; padding: 76px 20px 22px; box-shadow: 0 24px 48px rgba(17,17,26,0.12); border-bottom: 1px solid var(--border); }
  .nav-links li.mob-only { margin-top: 10px; }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links a { font-size: 20px; display: block; padding: 14px; }
  .nav-links li.mob-only { display: block; }
  .nav-right .nav-login, .nav-right .btn-pill { display: none; }
  .hamburger { display: flex; z-index: 1001; }
  .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }
  .nav { padding: 12px 18px; background: rgba(255,255,255,0.96); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .container { padding: 0 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .particles-global { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }