/* jagame.vn — trang giới thiệu thiệp cưới online. Cùng tông với giao diện trang cưới (ngà + hồng phấn). */
:root {
  --bg: #fbf7f3; --paper: #fff; --ink: #2f2626; --muted: #86797a; --line: #eee3dc; --soft: #f5ebe6;
  --accent: #c0747a; --accent-2: #e7a39a; --deep: #5b3a40;
  --serif: "Playfair Display", Georgia, serif; --body: "Lora", Georgia, serif; --ui: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
  --r: 16px; --shadow: 0 1px 2px rgba(47,38,38,.06), 0 12px 32px rgba(47,38,38,.08);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--body); overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
code, .mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9em; }
code { background: var(--soft); padding: 1px 6px; border-radius: 5px; }
.muted { color: var(--muted); } .small { font-size: .88rem; } .center { text-align: center; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 88px 20px; }
.narrow { max-width: 780px; }
.band { background: var(--paper); border-block: 1px solid var(--line); }
.eyebrow { font: 600 .78rem var(--ui); letter-spacing: .22em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.sec { font: italic 600 clamp(2rem, 4.2vw, 2.9rem)/1.15 var(--serif); text-align: center; margin-bottom: 44px; }
.sec.left { text-align: left; margin-bottom: 22px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px;
  font: 600 15px var(--ui); text-decoration: none; border: 1px solid transparent; transition: transform .15s, background .15s, box-shadow .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(192,116,122,.3); }
.btn-accent:hover { background: #a85f66; }
.btn-ghost { background: var(--paper); color: var(--ink); border-color: var(--line); }
.btn-sm { min-height: 38px; padding: 0 16px; font-size: 14px; box-shadow: none; }

/* Header */
.top { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 22px; padding: 12px 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-ico { width: 34px; height: 34px; color: var(--accent); }
.brand span { font: italic 700 1.45rem/1 var(--serif); display: grid; }
.brand small { font: 500 .62rem var(--ui); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-top: 3px; font-style: normal; }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { color: var(--ink); text-decoration: none; font: 500 .93rem var(--ui); }
.nav a:hover { color: var(--accent); }
.burger { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 38px; font-size: 18px; }
@media (max-width: 820px) {
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 20px 14px; }
  .nav.open { display: flex; } .nav a { padding: 10px 0; }
  .burger { display: block; } .top-cta { display: none; }
}

/* Hero */
.hero { max-width: 1240px; margin: 0 auto; padding: 56px 20px 90px; display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: center; }
.hero h1 { font: italic 600 clamp(2.7rem, 6vw, 4.6rem)/1.05 var(--serif); letter-spacing: -.01em; }
.hero h1 em { color: var(--accent); }
.lead { font-size: 1.12rem; color: #54494a; max-width: 560px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 26px; }
.trust { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; font: 500 .9rem var(--ui); color: #5d5253; }
.trust li { display: flex; align-items: center; gap: 10px; }
.trust svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }
.hero-shots { position: relative; padding: 10px 40px 60px 0; }
.browser { margin: 0; border-radius: 14px; overflow: hidden; background: #fff; box-shadow: 0 30px 70px rgba(91,58,64,.22); transform: rotate(-1.2deg); }
.browser-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: #f3ece8; font: 500 12px var(--ui); color: var(--muted); }
.browser-bar i { width: 10px; height: 10px; border-radius: 50%; background: #e2d5cf; }
.browser-bar b { margin-left: 12px; padding: 3px 12px; border-radius: 999px; background: #fff; font-weight: 500; }
.phone { position: absolute; right: 0; bottom: 0; width: 30%; margin: 0; border: 7px solid #231d1d; border-radius: 28px; overflow: hidden;
  box-shadow: 0 24px 50px rgba(0,0,0,.28); transform: rotate(3deg); background: #231d1d; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 30px; } .hero-shots { padding-right: 24px; } }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.features article { background: var(--bg); border: 1px solid var(--line); border-radius: var(--r); padding: 24px 24px 18px; }
.features svg { width: 34px; height: 34px; color: var(--accent); padding: 6px; border-radius: 10px; background: var(--soft); margin-bottom: 12px; }
.features h3 { font: 600 1.08rem var(--ui); }
.features p { font-size: .96rem; color: #5b5051; margin: 0; }
@media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 580px) { .features { grid-template-columns: 1fr; } }

/* Themes: 1 khung xem lớn + 10 nút đổi giao diện */
.themes-lead { margin: -26px auto 26px; max-width: 620px; }
.theme-show { max-width: 1000px; margin: 0 auto; }
.theme-show .browser { transform: none; box-shadow: 0 30px 70px rgba(91,58,64,.18); }
.theme-show .browser img { aspect-ratio: 16 / 10; width: 100%; object-fit: cover; transition: opacity .25s; }
.theme-show .browser img.swap { opacity: .15; }
.theme-cap { text-align: center; margin: 18px 0 16px; font: 500 .98rem var(--ui); color: var(--muted); min-height: 1.6em; }
.theme-cap b { color: var(--ink); }
.theme-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.theme-chips button { display: inline-flex; align-items: center; gap: 8px; padding: 8px 15px 8px 9px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--line); background: var(--paper); color: var(--ink); font: 500 .9rem var(--ui); transition: border-color .15s, box-shadow .15s, transform .15s; }
.theme-chips button:hover { border-color: var(--c); transform: translateY(-1px); }
.theme-chips button.on { border-color: var(--c); box-shadow: 0 0 0 2px var(--c) inset; font-weight: 600; }
.theme-chips i { width: 18px; height: 18px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 2px #fff inset; }
@media (max-width: 580px) {
  .theme-chips { flex-wrap: nowrap; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; margin: 0 -20px; padding: 2px 20px 6px; scroll-snap-type: x proximity; }
  .theme-chips::-webkit-scrollbar { display: none; }
  .theme-chips button { flex-shrink: 0; scroll-snap-align: center; }
}

/* Split */
.split { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; }
.split.rev > div { order: 2; }
.shot { margin: 0; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.ticks li { position: relative; padding-left: 32px; }
.ticks li::before { content: "♥"; position: absolute; left: 0; top: 0; color: var(--accent); }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 30px; } .split.rev > div { order: 0; } }

/* Link demo */
.link-demo { display: inline-flex; align-items: center; margin-top: 16px; padding: 14px 22px; border-radius: 14px; background: var(--bg);
  border: 1px dashed var(--accent-2); font: 500 clamp(1rem, 3vw, 1.5rem) ui-monospace, Menlo, monospace; color: var(--muted); }
.link-demo b { color: var(--accent); min-width: 5ch; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.steps li { background: var(--paper); border-radius: var(--r); padding: 28px 24px; box-shadow: var(--shadow); }
.steps li > b { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: #fff; font: 700 1.2rem var(--serif); margin-bottom: 12px; }
.steps h3 { font: 600 1.1rem var(--ui); }
.steps p { margin: 0; font-size: .96rem; color: #5b5051; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }

/* Downloads */
.downloads { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 20px; }
.dl { display: grid; gap: 8px; align-content: start; padding: 24px; border-radius: var(--r); border: 1px solid var(--line); background: var(--bg);
  color: var(--ink); text-decoration: none; transition: border-color .2s, transform .2s; }
a.dl:hover { border-color: var(--accent); transform: translateY(-2px); }
.dl b { font: 700 1.2rem var(--ui); }
.dl span { font-size: .95rem; color: #5b5051; }
.dl em { font: 600 .9rem var(--ui); font-style: normal; color: var(--accent); margin-top: 6px; }
.dl.soon { opacity: .7; } .dl.soon em { color: var(--muted); }
@media (max-width: 820px) { .downloads { grid-template-columns: 1fr; } }

/* FAQ */
details { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 14px 20px; margin-bottom: 10px; }
summary { cursor: pointer; font: 600 1rem var(--ui); list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::after { content: "+"; color: var(--accent); font-size: 1.3rem; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 2px; color: #5b5051; }

.foot { text-align: center; padding: 50px 20px 60px; display: grid; justify-items: center; gap: 6px; border-top: 1px solid var(--line); }

/* Trang "chưa có trang cưới ở link này" (tên chưa cấp / đã đổi) */
.nf { min-height: 100svh; display: grid; place-items: center; padding: 24px 16px;
  background: radial-gradient(ellipse at top, #fff 0, var(--bg) 60%); }
.nf-box { max-width: 560px; width: 100%; background: var(--paper); border: 1px solid var(--line); border-radius: 22px; padding: 36px 30px; box-shadow: var(--shadow); }
.nf-box h1 { font: italic 600 clamp(1.8rem, 6vw, 2.4rem)/1.15 var(--serif); margin-top: 6px; }
.nf-host { margin: 26px 0 4px; color: var(--muted); word-break: break-all; }
.nf-box .ticks { margin: 4px 0 26px; font-size: .98rem; }
.nf-box .cta-row { margin: 0; }
@media (max-width: 480px) { .nf-box { padding: 28px 20px; } .nf-box .btn { flex: 1 1 100%; } }

/* Hiện dần khi cuộn */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .js .reveal { opacity: 1; transform: none; transition: none; } }