/* ============================================================
   BUILD AFTER WORK — vibecode.dang.pm
   Design language: KryUI "Midnight Gold" (fork vanilla CSS từ
   00-templates/kryui/tokens.css — không Tailwind, site static).
   Trục cứng: vàng kim khan hiếm (1 điểm vàng/màn) · teal = live/verify.
   ============================================================ */

:root {
  --kr-bg:        #0c0e12;
  --kr-surface:   #14171d;
  --kr-surface2:  #191d24;
  --kr-line:      #242932;
  --kr-line2:     #2f3540;

  --kr-ink:       #f3f5f8;
  --kr-ink-soft:  #8b94a3;
  --kr-ink-faint: #5b636f;

  --kr-gold:       #e7b866;
  --kr-gold2:      #c99544;
  --kr-gold-hi:    #f2d79a;
  --kr-action-ink: #1a1206;

  --kr-verify:      #34d8c4;
  --kr-verify-soft: #7ef0e0;
  --kr-verify-bg:   #12332f;

  --kr-success:    #4ade80;  --kr-success-bg: #14321f;
  --kr-warning:    #fbbf24;  --kr-warning-bg: #33290f;
  --kr-danger:     #f87171;  --kr-danger-bg:  #3a1c1c;
  --kr-info:       #60a5fa;  --kr-info-bg:    #16233b;

  --kr-ring: rgba(231,184,102,.55);
  --kr-glow-gold: rgba(231,184,102,.16);
  --kr-glow-teal: rgba(52,216,196,.14);

  --kr-radius-pill: 99px;
  --kr-radius-card: 1rem;
  --kr-radius-md:   .625rem;
  --kr-radius-sm:   .5rem;

  --kr-shadow-card: 0 8px 24px rgba(0,0,0,.18);
  --kr-shadow-pop:  0 16px 48px rgba(0,0,0,.28);

  --kr-ease: cubic-bezier(.4,0,.2,1);

  --kr-font-sans: "Be Vietnam Pro", "Sora", system-ui, -apple-system, sans-serif;
  --kr-font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--kr-bg);
  color: var(--kr-ink);
  font-family: var(--kr-font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; }

/* ---------- layout shells ---------- */

.wrap    { max-width: 1200px; margin-inline: auto; padding-inline: 48px; }
.wrap-sm { max-width: 760px;  margin-inline: auto; padding-inline: 48px; }

.section { padding-block: 96px; }
.section-alt { background: var(--kr-surface); border-block: 1px solid var(--kr-line); }

/* ---------- type ---------- */

.eyebrow {
  font-family: var(--kr-font-mono);
  font-size: .75rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--kr-verify);
  margin-bottom: 16px;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -.01em; text-wrap: balance; }
p, li, summary, blockquote { text-wrap: pretty; }

.h-display { font-size: clamp(3rem, 7vw, 6rem); font-weight: 800; letter-spacing: -.03em; }
.h-section { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; margin-bottom: 20px; }

.lead { font-size: 1.125rem; color: var(--kr-ink-soft); max-width: 62ch; }
.soft  { color: var(--kr-ink-soft); }
.faint { color: var(--kr-ink-faint); }
.mono  { font-family: var(--kr-font-mono); }

.text-gold-grad {
  background: linear-gradient(135deg, var(--kr-gold), var(--kr-gold-hi));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- components ---------- */

.kr-card {
  background: var(--kr-surface);
  border: 1px solid var(--kr-line);
  border-radius: var(--kr-radius-card);
  padding: 28px;
}
.kr-card-hover { transition: transform .16s var(--kr-ease), border-color .16s var(--kr-ease); }
.kr-card-hover:hover { transform: translateY(-2px); border-color: var(--kr-line2); }

.kr-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--kr-font-sans); font-weight: 600; font-size: 1rem;
  padding: 14px 28px; border: 0; border-radius: var(--kr-radius-sm);
  cursor: pointer; text-decoration: none;
  transition: transform .12s var(--kr-ease), filter .16s var(--kr-ease);
}
.kr-btn:hover  { filter: brightness(1.06); }
.kr-btn:active { transform: scale(.97); }
.kr-btn-gold  { background: linear-gradient(135deg, var(--kr-gold), var(--kr-gold2)); color: var(--kr-action-ink); }
.kr-btn-ghost { background: transparent; color: var(--kr-ink); border: 1px solid var(--kr-line2); }

.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-family: var(--kr-font-mono); font-size: .75rem; letter-spacing: .08em;
  padding: 6px 14px; border-radius: var(--kr-radius-pill);
  border: 1px solid var(--kr-line2); color: var(--kr-ink-soft);
}
.badge-verify { border-color: var(--kr-verify); color: var(--kr-verify); background: var(--kr-verify-bg); }

.grad-hero {
  background:
    radial-gradient(120% 120% at 100% 0, var(--kr-glow-gold), transparent 55%),
    radial-gradient(80% 80% at 0 100%, var(--kr-glow-teal), transparent 50%),
    linear-gradient(150deg, #14171d, var(--kr-bg));
}

/* pipeline: IDEA → PROMPT → BUILD ... */
.pipeline { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.pipeline .step {
  font-family: var(--kr-font-mono); font-size: .875rem; letter-spacing: .12em;
  padding: 10px 20px; border: 1px solid var(--kr-line2);
  border-radius: var(--kr-radius-sm); background: var(--kr-surface2);
}
.pipeline .arrow { color: var(--kr-ink-faint); font-family: var(--kr-font-mono); }

/* form */
label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: 6px; }
label .req { color: var(--kr-gold); }
input[type=text], input[type=email], input[type=tel], textarea, select {
  width: 100%; padding: 12px 14px;
  background: var(--kr-surface2); color: var(--kr-ink);
  border: 1px solid var(--kr-line2); border-radius: var(--kr-radius-md);
  font-family: var(--kr-font-sans); font-size: 1rem;
}
textarea { resize: vertical; min-height: 90px; }
input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--kr-ring); outline-offset: 2px;
}
.field { margin-bottom: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
.radio-row { display: flex; flex-wrap: wrap; gap: 10px; }
.radio-row input { position: absolute; opacity: 0; pointer-events: none; }
.radio-row span {
  display: inline-block; padding: 9px 18px; cursor: pointer;
  border: 1px solid var(--kr-line2); border-radius: var(--kr-radius-pill);
  font-size: .875rem; color: var(--kr-ink-soft);
  transition: border-color .12s var(--kr-ease), color .12s var(--kr-ease);
}
.radio-row input:checked + span { border-color: var(--kr-gold); color: var(--kr-gold); background: rgba(231,184,102,.08); }
.radio-row input:focus-visible + span { outline: 2px solid var(--kr-ring); outline-offset: 2px; }

/* honeypot — tên field KHÔNG ngữ nghĩa, kéo khỏi màn hình */
.hp-wrap { position: absolute; left: -6000px; top: -6000px; }

/* checklist tick (localStorage) */
.check-item { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--kr-line); }
.check-item input[type=checkbox] { width: 18px; height: 18px; margin-top: 4px; accent-color: var(--kr-gold); flex: none; }
.check-item.done label { text-decoration: line-through; color: var(--kr-ink-faint); }

/* timeline (run of show) */
.timeline { border-left: 2px solid var(--kr-line2); padding-left: 28px; }
.timeline .slot { position: relative; padding-bottom: 28px; }
.timeline .slot::before {
  content: ""; position: absolute; left: -34px; top: 8px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--kr-line2);
}
.timeline .slot.hot::before { background: var(--kr-gold); box-shadow: 0 0 0 4px var(--kr-glow-gold); }
.timeline .t { font-family: var(--kr-font-mono); font-size: .8rem; color: var(--kr-verify); letter-spacing: .1em; }
.timeline h3 { font-size: 1.05rem; margin: 2px 0 4px; }

/* footer */
.site-footer { border-top: 1px solid var(--kr-line); padding: 40px 0; color: var(--kr-ink-soft); font-size: .875rem; }
.site-footer a { color: var(--kr-ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--kr-gold); }

/* nav */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12,14,18,.85); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--kr-line);
}
.site-nav .inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.site-nav .brand { font-weight: 800; letter-spacing: .02em; text-decoration: none; font-size: .95rem; }
.site-nav .brand .dot { color: var(--kr-gold); }
.site-nav .brand { white-space: nowrap; flex: none; }
.site-nav .links { display: flex; gap: 26px; align-items: center; }
.site-nav .links a { text-decoration: none; color: var(--kr-ink-soft); font-size: .875rem; white-space: nowrap; }
.site-nav .links a:hover { color: var(--kr-ink); }
.site-nav .links a:not(.cta) { position: relative; padding-block: 4px; }
.site-nav .links a:not(.cta)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--kr-gold); transition: right .22s var(--kr-ease);
}
.site-nav .links a:not(.cta):hover::after { right: 0; }
.site-nav .links a.cta {
  color: var(--kr-action-ink); background: linear-gradient(135deg, var(--kr-gold), var(--kr-gold2));
  padding: 8px 18px; border-radius: var(--kr-radius-sm); font-weight: 600; flex: none;
}
@media (max-width: 1150px) {
  .site-nav .links { gap: 20px; }
  .site-nav .links a.m-hide-md { display: none; }
}

.kr-fade-up { animation: kr-fade-up .4s var(--kr-ease) both; }
@keyframes kr-fade-up { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--kr-line2); border-radius: 99px; border: 2px solid var(--kr-bg); }

/* ---------- motion (progressive enhancement — không JS thì mọi thứ hiện sẵn) ---------- */

html.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--kr-ease), transform .6s var(--kr-ease); }
html.js .reveal.in { opacity: 1; transform: none; }

/* stagger card trong grid vừa reveal */
html.js .reveal .kr-card { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--kr-ease), transform .5s var(--kr-ease); }
html.js .reveal.in .kr-card { opacity: 1; transform: none; }
html.js .reveal.in .kr-card:nth-child(2) { transition-delay: .07s; }
html.js .reveal.in .kr-card:nth-child(3) { transition-delay: .14s; }
html.js .reveal.in .kr-card:nth-child(4) { transition-delay: .21s; }
html.js .reveal.in .kr-card:nth-child(5) { transition-delay: .28s; }
html.js .reveal.in .kr-card:nth-child(6) { transition-delay: .35s; }

.kr-btn-gold { box-shadow: 0 0 0 rgba(231,184,102,0); transition: transform .12s var(--kr-ease), filter .16s var(--kr-ease), box-shadow .3s var(--kr-ease); }
.kr-btn-gold:hover { box-shadow: 0 6px 28px rgba(231,184,102,.35); }

.shimmer {
  background: linear-gradient(110deg, var(--kr-gold) 20%, var(--kr-gold-hi) 45%, #fff 50%, var(--kr-gold-hi) 55%, var(--kr-gold) 80%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: kr-shimmer 4.5s var(--kr-ease) infinite;
}
@keyframes kr-shimmer { 0% { background-position: 120% 0; } 55%, 100% { background-position: -120% 0; } }

.live-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: currentColor; animation: kr-pulse-dot 1.6s ease-in-out infinite; }
@keyframes kr-pulse-dot { 0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52,216,196,.5); } 50% { opacity: .55; box-shadow: 0 0 0 5px rgba(52,216,196,0); } }

@media (prefers-reduced-motion: reduce) {
  html.js .reveal, html.js .reveal .kr-card { opacity: 1; transform: none; transition: none; }
  .shimmer, .live-dot, .kr-fade-up, .cursor { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive (mobile v1 — desktop-first, thu dần) ---------- */

.site-footer .wrap { flex-wrap: wrap; row-gap: 12px; }

@media (max-width: 900px) {
  .wrap, .wrap-sm { padding-inline: 28px; }
  .section { padding-block: 72px; }
  .site-nav .links { gap: 18px; }
  .site-nav .links a.m-hide { display: none; }
}

@media (max-width: 700px) {
  .wrap, .wrap-sm { padding-inline: 20px; }
  .section { padding-block: 56px; }
  body { font-size: 15px; }
  .site-nav .inner { height: auto; min-height: 54px; padding-block: 9px; gap: 12px; }
  .site-nav .brand { font-size: .78rem; letter-spacing: .01em; flex: none; }
  .site-nav .links { gap: 12px; }
  .site-nav .links a { font-size: .8rem; }
  .site-nav .links a.cta { padding: 7px 14px; flex: none; }
  .lead { font-size: 1.05rem; }
  .kr-btn { padding: 12px 22px; font-size: .95rem; }
  .kr-card { padding: 22px; }
  .form-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 22px; }
  .timeline .slot::before { left: -28px; }
  .pipeline { gap: 8px; }
  .pipeline .step { padding: 8px 14px; font-size: .8rem; }
}

@media (max-width: 440px) {
  .site-nav .links a.m-hide-sm { display: none; }
}