/* ==========================================================
   Tapngage - main stylesheet
   Brand colors live in :root. Change them here to re-theme.
   ========================================================== */
:root {
  --ink: #0e1a33;
  --ink-2: #3d4a66;
  --muted: #6b7690;
  --bg: #ffffff;
  --tint: #f3f6fc;
  --line: #e2e7f2;
  --primary: #3355e0;
  --primary-dark: #2442bd;
  --primary-soft: #e8edff;
  --accent: #ff7a59;
  --accent-soft: #fff0eb;
  --placeholder: #b7791f;
  --placeholder-soft: #fff8e6;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(14, 26, 51, 0.08);
  --shadow-lg: 0 24px 60px rgba(14, 26, 51, 0.14);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
h1, h2, h3, h4, h5 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); font-weight: 800; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; }
h3 { font-size: 1.35rem; font-weight: 700; }
h4 { font-size: 1.05rem; font-weight: 700; }
p { margin: 0 0 1em; color: var(--ink-2); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--primary); margin-bottom: 14px;
}
.accent { color: var(--primary); position: relative; white-space: nowrap; }
.accent::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .06em; height: .22em;
  background: var(--accent); opacity: .35; border-radius: 4px; z-index: -1;
}
.lead { font-size: 1.15rem; max-width: 34em; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; font-weight: 700; font-size: .98rem;
  border: 2px solid transparent; cursor: pointer; transition: transform .15s, background .15s, box-shadow .15s;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(51, 85, 224, .28); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 9px 18px; font-size: .9rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .85); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 4px 20px rgba(14, 26, 51, .05); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand img { height: 36px; width: auto; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a:not(.btn) { color: var(--ink-2); font-weight: 600; font-size: .95rem; }
.site-nav a:not(.btn):hover { color: var(--primary); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 96px;
  background:
    radial-gradient(900px 500px at 85% 10%, var(--primary-soft), transparent 60%),
    radial-gradient(600px 400px at 0% 90%, var(--accent-soft), transparent 60%);
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-art img { width: 100%; filter: drop-shadow(0 30px 50px rgba(14, 26, 51, .12)); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-tint { background: var(--tint); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-sub { font-size: 1.1rem; }

/* ---------- Placeholders ---------- */
.placeholder-card {
  position: relative; background: #fff; border: 2px dashed #e9c46a;
  border-radius: var(--radius); padding: 40px 32px 28px;
}
.placeholder-card em { color: var(--placeholder); font-style: normal; font-weight: 600; }
.placeholder-tag {
  position: absolute; top: -13px; left: 24px;
  background: var(--placeholder-soft); color: var(--placeholder); border: 1px solid #f1d58a;
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px;
}
.placeholder-tag.inline { position: static; vertical-align: middle; margin-left: 8px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 32px; align-items: stretch; }
.stats { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stats li {
  background: var(--tint); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; justify-content: center;
}
.stats strong { font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.stats span { color: var(--muted); font-size: .9rem; font-weight: 600; }

/* ---------- Vision / mission ---------- */
.vm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.vm-card img { margin-bottom: 18px; }
.vm-card p { font-size: 1.12rem; }
.values { margin-top: 56px; }
.values-title { margin-bottom: 20px; }
.values-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.values-list li {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
  display: flex; flex-direction: column; gap: 6px; border-top: 4px solid var(--primary);
}
.values-list span { color: var(--muted); font-size: .92rem; }

/* ---------- Product ---------- */
.product-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.product-visual {
  background: linear-gradient(160deg, var(--primary-soft), var(--accent-soft));
  border-radius: 28px; padding: 40px 28px 0; display: flex; justify-content: center; overflow: hidden;
}
.product-visual img { width: 100%; max-width: 400px; }
.audience { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin: 28px 0; }
.audience-item h4 { color: var(--primary); }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { position: relative; padding-left: 28px; margin-bottom: 10px; color: var(--ink-2); font-size: .95rem; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' fill='none' stroke='%233355e0' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat;
}
.store-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.store-btn {
  display: inline-flex; align-items: center; gap: 10px; background: var(--ink); color: #fff;
  padding: 9px 18px; border-radius: 12px; font-weight: 700; line-height: 1.15; transition: transform .15s;
}
.store-btn:hover { color: #fff; transform: translateY(-1px); }
.store-btn small { display: block; font-weight: 500; font-size: .7rem; opacity: .8; }

.feature-cards { list-style: none; padding: 0; margin: 64px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  transition: transform .2s, box-shadow .2s;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature img { margin-bottom: 14px; }
.feature p { font-size: .93rem; margin: 0; }

/* ---------- References ---------- */
.ref-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ref-card {
  display: flex; flex-direction: column; gap: 6px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; color: var(--ink); transition: transform .2s, box-shadow .2s, border-color .2s;
  position: relative;
}
.ref-card::after { content: "↗"; position: absolute; top: 20px; right: 22px; color: var(--muted); font-weight: 700; }
.ref-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--primary); color: var(--ink); }
.ref-card strong { font-size: 1.1rem; }
.ref-card span:last-child { color: var(--muted); font-size: .92rem; }
.ref-type {
  align-self: flex-start; font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  background: var(--primary-soft); color: var(--primary); padding: 3px 9px; border-radius: 999px;
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 24px 0 0; }
.contact-list li { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; gap: 16px; color: var(--ink-2); }
.contact-list span { width: 80px; flex-shrink: 0; font-weight: 700; color: var(--ink); }
.contact-form {
  background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 32px; box-shadow: var(--shadow);
  display: grid; gap: 16px;
}
.contact-form label { display: grid; gap: 6px; font-weight: 600; font-size: .9rem; }
.contact-form input, .contact-form select, .contact-form textarea {
  font: inherit; font-weight: 400; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--tint); color: var(--ink); width: 100%;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px var(--primary-soft);
}
.form-note { margin: 0; font-size: .9rem; color: var(--primary); min-height: 1.2em; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #c4cbe0; padding: 64px 0 24px; }
.site-footer p { color: #9aa4c0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid img { margin-bottom: 14px; height: 34px; width: auto; }
.footer-grid h5 { color: #fff; font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 14px; }
.footer-grid a { display: block; color: #c4cbe0; margin-bottom: 8px; font-size: .95rem; }
.footer-grid a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; margin-top: 48px; padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .1); font-size: .88rem;
}
.footer-bottom p { margin: 0; }
.footer-bottom a { color: #c4cbe0; }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .values-list, .feature-cards { grid-template-columns: repeat(2, 1fr); }
  .ref-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
  .product-visual { max-width: 520px; margin: 0 auto; width: 100%; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 20px;
    display: none; box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin-top: 14px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { padding: 48px 0 64px; }
  .hero-grid, .about-grid, .vm-grid, .contact-grid, .audience { grid-template-columns: 1fr; }
  .hero-art { max-width: 460px; margin: 0 auto; }
  .section { padding: 72px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .values-list, .feature-cards, .ref-grid, .stats { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .placeholder-card { padding: 36px 20px 22px; }
  .contact-form { padding: 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}