/* SeatSide marketing site (seatsideapp.com). Light by default; html[data-theme=dark] via js/theme.js. */
:root {
  --brand: #0f766e;
  --brand-2: #14b8a6;
  --accent: #f59e0b;
  --bg: #ffffff;
  --bg-alt: #f5f7f9;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #526071;
  --border: #e4e8ee;
  --brand-ink: #0f766e;
  --brand-soft: #e6f4f2;
  --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 12px 32px -12px rgba(15, 23, 42, .14);
  --shadow-lg: 0 30px 60px -20px rgba(15, 23, 42, .30);
  --radius: 20px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0b0f14; --bg-alt: #111720; --surface: #151c26; --text: #e8edf3; --muted: #9aa6b5;
  --border: #243040; --brand-ink: #5eead4; --brand-soft: #0f2a2a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px -12px rgba(0, 0, 0, .6);
  --shadow-lg: 0 30px 60px -20px rgba(0, 0, 0, .8);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0f14; --bg-alt: #111720; --surface: #151c26; --text: #e8edf3; --muted: #9aa6b5;
    --border: #243040; --brand-ink: #5eead4; --brand-soft: #0f2a2a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px -12px rgba(0, 0, 0, .6);
    --shadow-lg: 0 30px 60px -20px rgba(0, 0, 0, .8);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
html, body { margin: 0; }
body {
  font: 17px/1.6 "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.15; margin: 0 0 .6rem; letter-spacing: -.02em; }
h1 { font-size: clamp(2.3rem, 5.2vw, 3.7rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0 0 1rem; }
a { color: var(--brand-ink); }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 780px; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 700; color: var(--brand-ink); margin-bottom: .8rem; }
.eyebrow.light { color: #99f6e4; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .7rem 1.2rem; border-radius: 999px; font: inherit; font-weight: 650; font-size: .95rem;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s var(--ease), box-shadow .2s var(--ease), background-color .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--brand-2) 55%, transparent); outline-offset: 2px;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--brand) 70%, transparent); }
.btn-primary:hover { background: #0d6961; }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-light { background: #fff; color: #0f3d3a; }
.btn-lg { padding: .9rem 1.5rem; font-size: 1.02rem; }
.btn.block { width: 100%; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 1.5rem; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.2rem; color: var(--text); text-decoration: none; letter-spacing: -.02em; }
.brand-mark {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; font-size: 1rem;
}
.nav-links { display: flex; gap: 1.6rem; margin-left: auto; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 550; font-size: .95rem; }
.nav-links a:hover { color: var(--text); }
.nav-toggle { display: none; }
.menu { position: relative; }
.menu-btn {
  display: inline-flex; align-items: center; gap: .35rem; padding: 0; border: 0; background: none; cursor: pointer;
  font: inherit; font-weight: 550; font-size: .95rem; color: var(--muted);
}
.menu-btn:hover, .menu.open .menu-btn { color: var(--text); }
.menu-btn svg { transition: transform .2s var(--ease); }
.menu.open .menu-btn svg { transform: rotate(180deg); }
.menu-list {
  position: absolute; top: calc(100% + 14px); right: -12px; width: 290px; padding: 8px; z-index: 30;
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .15s var(--ease), transform .15s var(--ease), visibility .15s;
}
.menu.open .menu-list { opacity: 1; visibility: visible; transform: none; }
.menu-list > a { display: flex; align-items: center; gap: .8rem; padding: .6rem .7rem; border-radius: 12px; color: var(--text); }
.menu-list > a:hover, .menu-list > a:focus-visible { background: var(--brand-soft); color: var(--text); }
.menu-list .mi { display: grid; place-items: center; width: 38px; height: 38px; flex: none; border-radius: 11px; background: var(--brand-soft); font-size: 1.2rem; }
.menu-list b { display: block; font-size: .95rem; font-weight: 700; }
.menu-list small { display: block; color: var(--muted); font-size: .8rem; font-weight: 450; }
.menu-note { margin: .4rem .5rem .3rem; padding-top: .6rem; border-top: 1px solid var(--border); font-size: .78rem; line-height: 1.45; color: var(--muted); }
.menu-note a { color: var(--brand-ink); font-weight: 600; }

/* Hero */
.hero {
  position: relative; overflow: hidden; padding: 72px 0 88px;
  background:
    radial-gradient(900px 480px at 85% 10%, color-mix(in srgb, var(--brand-2) 18%, transparent), transparent 70%),
    radial-gradient(700px 400px at 0% 100%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hl { background: linear-gradient(90deg, var(--brand), var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.18rem; color: var(--muted); max-width: 560px; }
.hero-ctas { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1.6rem 0 1.4rem; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; color: var(--muted); font-size: .97rem; }
.ticks li::before { content: "✓"; color: var(--brand-ink); font-weight: 800; margin-right: .6rem; }

.hero-visual { position: relative; display: flex; justify-content: center; padding: 20px 0; }
.phone {
  width: 290px; border-radius: 42px; padding: 12px; background: #0f172a;
  box-shadow: var(--shadow-lg), inset 0 0 0 2px #334155; position: relative; transform: rotate(-2deg);
}
.phone-notch { position: absolute; top: 18px; left: 50%; transform: translateX(-50%); width: 90px; height: 22px; border-radius: 12px; background: #0f172a; z-index: 2; }
.screen { background: #f4f5f8; border-radius: 32px; padding: 52px 14px 18px; min-height: 520px; color: #111418; font-size: .82rem; }
.scr-bar { display: flex; align-items: center; gap: .5rem; background: linear-gradient(120deg, #1d4ed8, #3b82f6); color: #fff; padding: .7rem .8rem; border-radius: 14px; margin-bottom: .6rem; }
.scr-logo { font-size: 1.2rem; }
.scr-seat { background: #fff; border-radius: 12px; padding: .5rem .7rem; margin-bottom: .7rem; font-weight: 600; color: #1d4ed8; border: 1px solid #e3e6ec; }
.scr-item { display: grid; grid-template-columns: auto 1fr auto; gap: .6rem; align-items: center; background: #fff; border-radius: 12px; padding: .6rem .7rem; margin-bottom: .45rem; border: 1px solid #e3e6ec; }
.scr-item .emoji { font-size: 1.5rem; }
.scr-item b { display: block; font-size: .86rem; }
.scr-item small { color: #5b6472; }
.scr-item .price { font-weight: 700; }
.scr-btn { margin-top: 1rem; background: #1d4ed8; color: #fff; text-align: center; padding: .8rem; border-radius: 999px; font-weight: 700; }
.float-card {
  position: absolute; display: flex; align-items: center; gap: .7rem; background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 16px; padding: .75rem 1rem; box-shadow: var(--shadow); font-size: .88rem;
  animation: bob 6s ease-in-out infinite;
}
.float-card small { display: block; color: var(--muted); }
.fc-1 { top: 0; right: -24px; }
.fc-2 { bottom: 4px; left: -28px; animation-delay: -3s; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.ok { background: #16a34a; box-shadow: 0 0 0 4px #dcfce7; }
.big { font-size: 1.4rem; }
@keyframes bob { 50% { transform: translateY(-8px); } }

/* Strip */
.strip { border-block: 1px solid var(--border); background: var(--bg-alt); }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip-grid div { padding: 1.4rem 1rem; text-align: center; border-left: 1px solid var(--border); }
.strip-grid div:first-child { border-left: 0; }
.strip-grid b { display: block; font-size: 1.15rem; }
.strip-grid span { color: var(--muted); font-size: .9rem; }

/* Sections */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.sub { color: var(--muted); font-size: 1.1rem; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.step { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; }
.step-n {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; margin-bottom: 1rem;
  background: var(--brand-soft); color: var(--brand-ink); font-weight: 800;
}
.step p, .card p, .venue p { color: var(--muted); margin: 0; font-size: .97rem; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow); transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: var(--brand-soft); font-size: 1.5rem; margin-bottom: 1rem; }

.venue-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.venue { display: flex; gap: 1rem; padding: 24px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.venue-emoji { font-size: 2rem; line-height: 1; }

.roles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.role { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.role h3 { color: var(--brand-ink); }
.role ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; font-size: .95rem; }
.role li { padding-left: 1.4rem; position: relative; }
.role li::before { content: "✓"; position: absolute; left: 0; color: var(--brand-ink); font-weight: 800; }

.trust { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: center; }
.trust-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.trust-list li { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 14px; padding: 1rem 1.2rem; color: var(--muted); }
.trust-list b { color: var(--text); }

details { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 0 1.3rem; margin-bottom: 12px; }
summary { cursor: pointer; list-style: none; padding: 1.1rem 0; font-weight: 650; display: flex; justify-content: space-between; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--brand-ink); transition: transform .2s var(--ease); }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); padding-bottom: 1.1rem; margin: 0; }

.contact-mail { margin-top: 1.2rem; font-size: .95rem; }
.contact-mail a { color: #fff; font-weight: 650; text-underline-offset: 3px; }
.footer-inner a:not(.brand) { color: var(--brand-ink); }

/* Results */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat {
  margin: 0; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.stat::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: linear-gradient(90deg, var(--brand), var(--brand-2)); }
.stat-num {
  font-size: clamp(2.4rem, 4.5vw, 3.2rem); font-weight: 800; letter-spacing: -.03em; line-height: 1; margin-bottom: .8rem;
  background: linear-gradient(90deg, var(--brand), var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat-head { margin: 0 0 1rem; font-size: 1rem; line-height: 1.5; color: var(--muted); }
.stat-head strong { color: var(--text); font-weight: 750; }
.stat-points { list-style: none; margin: 0 0 1rem; padding: 0; border-top: 1px solid var(--border); }
.stat-points li {
  position: relative; padding: .7rem 0 .7rem 1.6rem; font-size: .92rem; line-height: 1.45; color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.stat-points li::before {
  content: ""; position: absolute; left: 0; top: .95rem; width: 16px; height: 16px; border-radius: 50%;
  background: var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f766e' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center / 11px no-repeat;
}
.stat-points strong { color: var(--brand-ink); font-weight: 800; font-variant-numeric: tabular-nums; }
.stat cite { margin-top: auto; font-style: normal; font-size: .76rem; color: var(--muted); line-height: 1.45; }
.stat cite a { color: var(--muted); text-decoration-color: color-mix(in srgb, var(--muted) 50%, transparent); }
.stat cite a:hover { color: var(--brand-ink); }
.stats-note { text-align: center; color: var(--muted); font-size: .85rem; max-width: 720px; margin: 28px auto 0; }

/* Contact */
.cta-section { background: linear-gradient(135deg, #0b3b38, #0f766e 55%, #0d9488); color: #fff; }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.contact-copy p { color: #ccfbf1; font-size: 1.1rem; }
.contact-copy .btn { margin-top: .6rem; }
.contact-form {
  background: var(--surface); color: var(--text); border-radius: 24px; padding: 28px; box-shadow: var(--shadow-lg);
  display: grid; gap: 14px;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form label { display: block; font-size: .9rem; font-weight: 600; }
.opt { color: var(--muted); font-weight: 450; }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit; font-size: .97rem; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 12px; padding: .7rem .85rem; width: 100%; display: block; margin-top: .35rem;
}
.contact-form textarea { resize: vertical; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { margin: 0; min-height: 1.4em; font-size: .95rem; font-weight: 600; }
.form-msg.ok { color: #15803d; }
.form-msg.err { color: #dc2626; }
.form-done { text-align: center; padding: 2rem 1rem; }
.form-done .big { font-size: 2.6rem; display: block; margin-bottom: .6rem; }

.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.footer-inner p { margin: 0; }
.footer-inner p:last-child { margin-left: auto; }

/* Responsive */
@media (max-width: 1000px) {
  .hero-grid, .trust, .contact-grid { grid-template-columns: 1fr; }
  .hero-visual { margin-top: 12px; }
  .steps, .roles, .stats { grid-template-columns: repeat(2, 1fr); }
  .cards, .venue-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .nav-cta { display: none; }
  .nav-toggle {
    display: grid; gap: 5px; margin-left: auto; background: none; border: 1px solid var(--border);
    border-radius: 10px; padding: 10px; cursor: pointer;
  }
  .nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 2px; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: .5rem 16px 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .7rem 0; font-size: 1rem; }
  .menu-btn { width: 100%; justify-content: space-between; padding: .7rem 0; font-size: 1rem; }
  .menu-list { position: static; width: auto; padding: 0 0 .4rem; border: 0; box-shadow: none; border-radius: 0; background: none; display: none; opacity: 1; visibility: visible; transform: none; }
  .menu.open .menu-list { display: block; }
  .menu-list > a { padding: .5rem .2rem; }
  .hero { padding: 44px 0 56px; }
  .section { padding: 64px 0; }
  .steps, .roles, .cards, .venue-grid, .field-row, .stats { grid-template-columns: 1fr; }
  .strip-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-grid div:nth-child(3) { border-left: 0; }
  .strip-grid div:nth-child(n+3) { border-top: 1px solid var(--border); }
  .phone { width: 260px; }
  .fc-1 { right: 0; } .fc-2 { left: 0; }
  .footer-inner p:last-child { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}