/* product.css — dùng chung cho trang giới thiệu phần mềm (/sungmedia, /sungcreator).
   Cùng bộ màu với landing.html: nền đen ấm, cam #FF5A36, Be Vietnam Pro + Fragment Mono. */
:root {
  color-scheme: dark;
  --bg: #0E0C0D; --bg-raise: #141213; --bg-sunk: #0A0809; --bg-hover: #1A1819;
  --line: #2D2826; --line-soft: #231F1E;
  --text: #E6E1E0; --muted: #8F8988; --subtle: #5E5857;
  --accent: #FF5A36; --accent-soft: #FF8A6B; --accent-deep: #CC3C1C;
  --ok: #4ADE80; --warn: #F5B544; --info: #7AA7FF;
  --font-head: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Fragment Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --r-md: 10px; --r-lg: 14px; --wrap: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.65 var(--font-body); -webkit-font-smoothing: antialiased; padding-inline: 16px; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--wrap); margin-inline: auto; }
h1, h2, h3 { font-family: var(--font-head); text-wrap: balance; margin: 0; letter-spacing: -.02em; }
p { margin: 0; }
.mono { font-family: var(--font-mono); }
.eyebrow { font: 700 11px/1 var(--font-head); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-soft); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: var(--r-md); border: 1px solid transparent;
  font: 600 14.5px/1 var(--font-body); text-decoration: none; cursor: pointer; transition: background .15s, border-color .15s, color .15s, transform .15s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-deep); transform: translateY(-1px); }
.btn-line { border-color: var(--line); color: var(--text); background: transparent; }
.btn-line:hover { border-color: var(--accent-soft); color: var(--accent-soft); }
.btn[aria-disabled="true"] { background: var(--bg-hover); color: var(--muted); border-color: var(--line); cursor: not-allowed; transform: none; }
.btn svg { width: 17px; height: 17px; flex: none; }

/* ── Mở đầu ── */
.p-hero { position: relative; padding-block: 72px 40px; overflow: hidden; }
.p-hero::before { content: ""; position: absolute; inset: -30% -20% auto; height: 640px; pointer-events: none;
  background: radial-gradient(ellipse at 50% 0%, rgba(255,90,54,.2), transparent 62%); }
.p-hero .wrap { position: relative; display: grid; justify-items: center; text-align: center; }
.p-icon { width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center; background: linear-gradient(145deg, var(--accent), var(--accent-deep));
  color: #fff; font: 800 28px/1 var(--font-head); box-shadow: 0 14px 40px rgba(255,90,54,.3); }
.p-hero h1 { margin-top: 22px; font-size: clamp(40px, 7vw, 76px); line-height: 1.02; font-weight: 800; letter-spacing: -.04em; }
.p-hero h1 + p { margin-top: 10px; font: 700 clamp(18px, 2.6vw, 26px)/1.3 var(--font-head); letter-spacing: -.02em; color: var(--text); max-width: 26em; }
.p-hero .lede { margin-top: 18px; color: var(--muted); font-size: 17px; max-width: 38em; }
.p-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 30px; }
.p-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin-top: 20px; font: 12.5px/1.4 var(--font-mono); color: var(--subtle); }
.p-meta span::before { content: "· "; color: var(--line); }
.p-meta span:first-child::before { content: ""; }
.p-note { margin-top: 12px; font-size: 13px; color: var(--warn); }
.p-note:empty { display: none; }

/* ── Khung cửa sổ app (mô phỏng) ── */
.appwin { margin: 48px auto 0; max-width: 980px; background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: 0 30px 80px rgba(0,0,0,.55), 0 0 0 1px rgba(255,90,54,.05); overflow: hidden; text-align: left; }
.appwin-bar { display: flex; align-items: center; gap: 10px; height: 38px; padding: 0 14px; border-bottom: 1px solid var(--line-soft); background: var(--bg-sunk);
  font: 12px/1 var(--font-mono); color: var(--muted); }
.appwin-bar .t { flex: 1; }
.appwin-bar i { width: 11px; height: 1px; background: var(--subtle); display: inline-block; margin-left: 12px; }
.appwin-body { display: grid; grid-template-columns: 196px 1fr; min-height: 360px; }
.aw-side { border-right: 1px solid var(--line-soft); padding: 14px 10px; display: grid; align-content: start; gap: 2px; background: var(--bg-sunk); }
.aw-side .acc { padding: 10px; margin-bottom: 10px; border: 1px solid var(--line-soft); border-radius: 9px; font-size: 12px; color: var(--muted); }
.aw-side .acc b { display: block; color: var(--text); font: 500 12.5px/1.4 var(--font-mono); }
.aw-side .it { padding: 8px 10px; border-radius: 8px; font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.aw-side .it.on { background: rgba(255,90,54,.12); color: var(--accent-soft); font-weight: 600; }
.aw-side .sec { margin: 12px 10px 4px; font: 700 10px/1 var(--font-head); letter-spacing: .12em; color: var(--subtle); text-transform: uppercase; }
.aw-main { padding: 16px; display: grid; gap: 12px; align-content: start; min-width: 0; }
.aw-row { display: flex; flex-wrap: wrap; gap: 8px; }
.aw-chip { padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 12px; color: var(--muted); }
.aw-chip b { color: var(--text); font-weight: 600; }
.aw-prompt { border: 1px solid var(--line); border-radius: 10px; background: var(--bg-sunk); padding: 10px 12px; font: 12.5px/1.75 var(--font-mono); color: var(--text); }
.aw-prompt span { color: var(--subtle); margin-right: 10px; }
.aw-prompt em { color: var(--accent-soft); font-style: normal; }
.aw-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); }
.aw-foot .go { padding: 8px 16px; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 600; font-size: 12.5px; }
.aw-jobs { display: grid; border: 1px solid var(--line-soft); border-radius: 10px; overflow: hidden; }
.aw-job { display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; align-items: center; padding: 8px 10px; border-top: 1px solid var(--line-soft); font-size: 12.5px; }
.aw-job:first-child { border-top: 0; }
.aw-job .th { width: 44px; height: 26px; border-radius: 5px; background: linear-gradient(135deg, #3a2a24, #1d1716); }
.aw-job .th.a { background: linear-gradient(135deg, #5b3b2a, #23314a); }
.aw-job .th.b { background: linear-gradient(135deg, #24413a, #3f2a46); }
.aw-job .nm { color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border-radius: 999px; font: 600 11px/1.4 var(--font-mono); white-space: nowrap; }
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill-ok { color: var(--ok); background: rgba(74,222,128,.12); }
.pill-run { color: var(--warn); background: rgba(245,181,68,.12); }
.pill-q { color: var(--muted); background: rgba(143,137,136,.12); }
@media (max-width: 720px) { .appwin-body { grid-template-columns: 1fr; } .aw-side { display: none; } }

/* ── Khối nội dung ── */
section { padding-block: 72px; border-top: 1px solid var(--line-soft); }
.s-head { display: grid; gap: 12px; max-width: 46em; margin-bottom: 36px; }
.s-head h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.12; }
.s-head p { color: var(--muted); font-size: 16px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); }
.card { background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; display: grid; gap: 10px; align-content: start; }
.card h3 { font-size: 18px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card .ic { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(255,90,54,.1); color: var(--accent-soft); }
.card .ic svg { width: 20px; height: 20px; }
.card ul { margin: 2px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; display: grid; gap: 4px; }
.card .tag { justify-self: start; font: 600 11.5px/1 var(--font-mono); color: var(--accent-soft); background: rgba(255,90,54,.1); padding: 5px 8px; border-radius: 6px; }

/* Danh sách tính năng 2 cột */
.feat { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 0 40px; }
.feat li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.feat li::before { content: ""; width: 18px; height: 18px; margin-top: 3px; border-radius: 50%; border: 1.5px solid var(--accent);
  background: radial-gradient(circle, var(--accent) 0 3.5px, transparent 4px); }
.feat b { display: block; font: 700 15.5px/1.4 var(--font-head); letter-spacing: -.01em; }
.feat span { color: var(--muted); font-size: 14px; }

/* Dòng chảy các bước (SungCreator) */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; counter-reset: st; }
.flow li { position: relative; background: var(--bg-raise); border: 1px solid var(--line); border-radius: 12px; padding: 16px 14px; counter-increment: st; }
.flow li::before { content: counter(st, decimal-leading-zero); display: block; font: 500 12px/1 var(--font-mono); color: var(--accent-soft); margin-bottom: 10px; }
.flow li b { display: block; font: 700 15px/1.3 var(--font-head); }
.flow li span { display: block; margin-top: 4px; color: var(--muted); font-size: 12.5px; line-height: 1.5; }
.flow li:not(:last-child)::after { content: ""; position: absolute; right: -8px; top: 50%; width: 6px; height: 6px; border-top: 1.5px solid var(--subtle); border-right: 1.5px solid var(--subtle); transform: translateY(-50%) rotate(45deg); }
@media (max-width: 960px) { .flow { grid-template-columns: repeat(3, minmax(0, 1fr)); } .flow li::after { display: none; } }
@media (max-width: 560px) { .flow { grid-template-columns: 1fr 1fr; } }

/* Bước chi tiết */
.step { display: grid; grid-template-columns: 220px 1fr; gap: 28px; padding: 28px 0; border-top: 1px solid var(--line-soft); }
.step:first-child { border-top: 0; padding-top: 0; }
.step .k { font: 500 12px/1 var(--font-mono); color: var(--accent-soft); }
.step h3 { margin-top: 8px; font-size: 22px; }
.step p { color: var(--muted); }
.step ul { margin: 12px 0 0; padding-left: 18px; color: var(--muted); display: grid; gap: 6px; font-size: 14.5px; }
.step ul b { color: var(--text); font-weight: 600; }
@media (max-width: 760px) { .step { grid-template-columns: 1fr; gap: 10px; } }

/* Bảng giá */
.price { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.price th, .price td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.price th { font: 600 12px/1.3 var(--font-body); color: var(--subtle); text-transform: uppercase; letter-spacing: .06em; }
.price td:last-child, .price th:last-child { text-align: right; white-space: nowrap; }
.price td small { display: block; color: var(--subtle); font-size: 12.5px; }
.price .v { font: 500 15px/1.3 var(--font-mono); color: var(--text); }
.price .free { color: var(--ok); }
.tbl { background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--r-lg); overflow-x: auto; }
.tbl + .tbl-note { margin-top: 12px; color: var(--subtle); font-size: 13px; }

/* So sánh 2 nguồn */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 760px) { .duo { grid-template-columns: 1fr; } }
.duo .card .big { font: 700 30px/1 var(--font-head); letter-spacing: -.02em; }
.duo .card .big small { font: 500 13px/1 var(--font-body); color: var(--muted); margin-left: 6px; letter-spacing: 0; }

/* Bắt đầu */
.start { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 14px; counter-reset: s; }
.start li { counter-increment: s; background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; display: grid; gap: 8px; align-content: start; }
.start li::before { content: counter(s); width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--accent); color: #fff; font: 700 14px/1 var(--font-head); }
.start b { font: 700 16px/1.3 var(--font-head); }
.start span { color: var(--muted); font-size: 14px; }
.start a { color: var(--accent-soft); }

/* Hỏi đáp */
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--bg-raise); border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font: 600 15.5px/1.4 var(--font-head); display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent-soft); font: 400 20px/1 var(--font-body); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 16px; color: var(--muted); font-size: 14.5px; }

/* Chéo sang phần mềm kia */
.other { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; background: linear-gradient(120deg, rgba(255,90,54,.1), rgba(255,90,54,.02));
  border: 1px solid rgba(255,90,54,.25); border-radius: var(--r-lg); padding: 26px; }
.other h3 { font-size: 22px; }
.other p { color: var(--muted); margin-top: 4px; }

footer { padding-block: 40px 56px; border-top: 1px solid var(--line-soft); color: var(--subtle); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
footer a { text-decoration: none; color: var(--muted); }
footer a:hover { color: var(--text); }
footer .logo { display: flex; align-items: center; gap: 9px; text-decoration: none; font: 800 17px/1 var(--font-head); color: var(--text); }
footer .logo i { width: 26px; height: 26px; border-radius: 7px; display: grid; place-items: center; background: var(--accent); color: #fff; font: 800 13px/1 var(--font-head); font-style: normal; }
footer .logo b { color: var(--accent); }
@media (max-width: 640px) { .p-hero { padding-block: 44px 28px; } section { padding-block: 52px; } }