@import url('../vendor/fonts.css');

/* ── Design tokens ────────────────────────────────────────────────
   Colour meaning is fixed across the whole deck:
   cyan   = satellite / System 1 (fast models)
   violet = LLM agent / System 2 (reasoning)
   gold   = humans / law / decisions
   green  = forest, healthy, verified
   amber  = warning, needs review
   red    = loss, alarm, Redstone brand accent                      */
:root {
  --bg: #040b08; --bg2: #08150f; --bg3: #0d2018;
  --panel: rgba(12, 30, 22, .72); --panel2: rgba(20, 44, 33, .78);
  --line: rgba(170, 230, 200, .14); --line2: rgba(170, 230, 200, .28);
  --ink: #ecf7f0; --ink2: #b4cdbf; --ink3: #8fac9d; --ink4: #6f8b7d;
  --green: #3ee08f; --lime: #b8f26b; --cyan: #4cc9f0; --violet: #a78bfa;
  --gold: #f2c14e; --amber: #ffb020; --red: #ff4d5e; --brand: #E54D2E;
  --sys1: var(--cyan); --sys2: var(--violet); --human: var(--gold);
  --font: 'Be Vietnam Pro', system-ui, sans-serif;
  --serif: 'Lora', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-io: cubic-bezier(.65, 0, .35, 1);
  --ease-back: cubic-bezier(.34, 1.56, .64, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #000; overflow: hidden; color: var(--ink); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body.blackout #stage { opacity: 0; }

#stage {
  position: absolute; left: 50%; top: 50%; width: 1920px; height: 1080px;
  transform-origin: 50% 50%; overflow: hidden;
  background: radial-gradient(1400px 900px at 70% 20%, #0c2219 0%, var(--bg) 60%);
  transition: opacity .4s;
}

/* ── Slides ─────────────────────────────────────────────────────── */
.slide {
  position: absolute; inset: 0; padding: 92px 120px 96px; opacity: 0; visibility: hidden;
  transform: scale(1.015); transition: opacity .7s var(--ease-out), transform .9s var(--ease-out), visibility 0s .7s;
  font-size: 30px; line-height: 1.4;
}
.slide.active { opacity: 1; visibility: visible; transform: none; transition: opacity .8s var(--ease-out) .12s, transform 1.1s var(--ease-out) .12s, visibility 0s; z-index: 2; }
.slide.leave-left { transform: translateX(-60px) scale(.985); }
.slide.leave-right { transform: translateX(60px) scale(.985); }
.slide > .bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.slide > .bg canvas, .slide canvas.fill { position: absolute; inset: 0; width: 100% !important; height: 100% !important; }
.slide > .content { position: relative; z-index: 1; height: 100%; }
.slide-error { color: var(--red); font: 28px var(--mono); padding: 200px; }

/* ── Type ───────────────────────────────────────────────────────── */
.kicker { font: 600 20px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--green); display: flex; gap: 16px; align-items: center; margin-bottom: 22px; }
.kicker .n { color: var(--ink3); }
.kicker::after { content: ''; height: 1px; width: 80px; background: linear-gradient(90deg, var(--green), transparent); }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -.02em; line-height: 1.08; }
h1 { font-size: 96px; font-weight: 800; }
h2 { font-size: 62px; }
h3 { font-size: 34px; letter-spacing: -.01em; }
.lead { font-size: 32px; color: var(--ink2); font-weight: 400; max-width: 1200px; margin-top: 18px; }
.quote { font: italic 500 40px/1.35 var(--serif); color: var(--ink); }
.mono { font-family: var(--mono); }
.dim { color: var(--ink3); } .muted { color: var(--ink2); }
.c-green { color: var(--green); } .c-cyan { color: var(--cyan); } .c-violet { color: var(--violet); }
.c-gold { color: var(--gold); } .c-amber { color: var(--amber); } .c-red { color: var(--red); }
.hl { background: linear-gradient(transparent 62%, rgba(62, 224, 143, .35) 62%); padding: 0 4px; }
.big-num { font: 800 120px/0.95 var(--font); letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.unit { font-size: .4em; font-weight: 600; color: var(--ink2); margin-left: 8px; letter-spacing: 0; }

/* ── Components ─────────────────────────────────────────────────── */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 22px; padding: 28px 32px; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 20px 60px rgba(0, 0, 0, .35); }
.card.glow-cyan { border-color: rgba(76, 201, 240, .45); box-shadow: 0 0 0 1px rgba(76, 201, 240, .15), 0 20px 70px rgba(76, 201, 240, .14); }
.card.glow-violet { border-color: rgba(167, 139, 250, .45); box-shadow: 0 20px 70px rgba(167, 139, 250, .14); }
.card.glow-gold { border-color: rgba(242, 193, 78, .45); box-shadow: 0 20px 70px rgba(242, 193, 78, .12); }
.card.glow-red { border-color: rgba(255, 77, 94, .5); box-shadow: 0 20px 70px rgba(255, 77, 94, .15); }
:where(.card) h3 { margin-bottom: 10px; }
:where(.card) p { margin: 0; color: var(--ink2); font-size: 26px; }
.tag { display: inline-flex; align-items: center; gap: 8px; font: 600 17px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 8px 12px; border-radius: 999px; border: 1px solid currentColor; }
.tag.sys1 { color: var(--sys1); } .tag.sys2 { color: var(--sys2); } .tag.human { color: var(--human); }
.tag.real { color: var(--green); } .tag.demo { color: var(--amber); }
.tag .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.src { position: absolute; left: 120px; bottom: 58px; z-index: 3; font: 400 16px/1.35 var(--mono); color: var(--ink4); max-width: 1500px; }
.src a { color: var(--ink3); text-decoration: none; }
.badge-demo { position: absolute; right: 120px; top: 40px; z-index: 5; }
.row { display: flex; gap: 32px; } .col { display: flex; flex-direction: column; gap: 24px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.spacer { flex: 1; }

/* Callout: a labelled box with an SVG leader line (see fx.js callout()) */
.callout { position: absolute; z-index: 4; background: rgba(5, 14, 10, .86); border: 1px solid var(--line2); border-left: 4px solid var(--amber); border-radius: 12px; padding: 14px 18px; font-size: 22px; line-height: 1.3; max-width: 420px; box-shadow: 0 10px 40px rgba(0, 0, 0, .5); }
.callout b { display: block; font-size: 15px; font-family: var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--amber); margin-bottom: 4px; }
svg.leaders { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 3; overflow: visible; }
svg.leaders path { fill: none; stroke: var(--amber); stroke-width: 2; stroke-dasharray: 6 6; }
svg.leaders circle { fill: var(--amber); }

/* ── Build steps ────────────────────────────────────────────────── */
[data-step] { opacity: 0; transform: translateY(26px); filter: blur(8px); transition: opacity .7s var(--ease-out), transform .9s var(--ease-out), filter .7s var(--ease-out); }
[data-step].shown { opacity: 1; transform: none; filter: none; }
[data-step]:not(.shown):not([data-fx="dim"]) { pointer-events: none; }  /* invisible future steps must not block hover/click underneath */
[data-step][data-fx="left"] { transform: translateX(-60px); }
[data-step][data-fx="right"] { transform: translateX(60px); }
[data-step][data-fx="scale"] { transform: scale(.85); }
[data-step][data-fx="none"] { transform: none; filter: none; }
[data-step].shown[data-fx] { transform: none; }
[data-step][data-fx="dim"] { opacity: 1; filter: none; transform: none; }  /* stays visible; .shown is used by slide code */
.slide.active .enter { animation: rs-enter 1s var(--ease-out) both; }
.slide.active .enter.d1 { animation-delay: .25s; } .slide.active .enter.d2 { animation-delay: .45s; }
.slide.active .enter.d3 { animation-delay: .65s; } .slide.active .enter.d4 { animation-delay: .85s; } .slide.active .enter.d5 { animation-delay: 1.05s; }
@keyframes rs-enter { from { opacity: 0; transform: translateY(30px); filter: blur(8px); } to { opacity: 1; transform: none; filter: none; } }

/* ── Chrome ─────────────────────────────────────────────────────── */
#progress { position: absolute; left: 0; top: 0; height: 4px; background: linear-gradient(90deg, var(--green), var(--cyan)); z-index: 50; transition: width .6s var(--ease-out); box-shadow: 0 0 14px var(--green); }
#footer { position: absolute; left: 120px; right: 120px; bottom: 30px; display: flex; justify-content: space-between; font: 500 16px/1 var(--mono); color: var(--ink4); z-index: 40; letter-spacing: .06em; pointer-events: none; }
#footer .brand b { color: var(--brand); }
body[data-slide="s00"] #footer, body[data-slide="s01"] #footer, body[data-slide="s16"] #footer { opacity: 0; }
#toast { position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px); background: rgba(10, 25, 18, .95); border: 1px solid var(--line2); color: var(--ink); padding: 12px 22px; border-radius: 12px; font: 500 16px var(--font); opacity: 0; transition: all .3s; z-index: 200; pointer-events: none; }
#toast.on { opacity: 1; transform: translate(-50%, 0); }
.nav-zone { position: fixed; top: 0; bottom: 0; width: 6vw; z-index: 60; cursor: pointer; opacity: 0; }
#nav-prev { left: 0; } #nav-next { right: 0; }

/* Overview grid */
#overview { position: fixed; inset: 0; z-index: 100; background: rgba(2, 8, 5, .94); display: none; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 50px; overflow: auto; align-content: start; }
body.overview #overview { display: grid; }
#overview button { all: unset; cursor: pointer; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; color: var(--ink2); font: 500 17px/1.35 var(--font); display: flex; gap: 14px; }
#overview button b { font-family: var(--mono); color: var(--green); }
#overview button.on, #overview button:hover { border-color: var(--green); color: var(--ink); }

/* Interactive affordance */
.hot { cursor: pointer; transition: transform .25s var(--ease-out), box-shadow .25s, border-color .25s; }
.hot:hover { transform: translateY(-3px); border-color: var(--line2); }
.hint { font: 500 17px var(--mono); color: var(--ink3); letter-spacing: .05em; }
.hint::before { content: '◉ '; color: var(--green); animation: rs-blink 1.6s infinite; }
@keyframes rs-blink { 50% { opacity: .2; } }

/* ── Glossary (core/glossary.js) ────────────────────────────────────
   <abbr class="term" data-term="key">…</abbr>: dotted underline, hover/click → #gloss-pop
   .gl-chip / .gl-dock: visible on-slide definitions (glossChip / glossDock in fx.js)
   #gloss-ov: the D overlay "Định nghĩa trên slide này"                  */
abbr.term { text-decoration: underline dotted rgba(236, 247, 240, .5); text-decoration-thickness: 2px; text-underline-offset: .2em; text-decoration-skip-ink: none; cursor: help; font-style: inherit; border: 0; }
abbr.term:hover { text-decoration-color: var(--green); }
.gl-chip { display: flex; align-items: flex-start; gap: 10px; font: 400 19px/1.34 var(--font); color: var(--ink2); background: rgba(5, 15, 11, .84); border: 1px solid var(--line2); border-left: 3px solid var(--green); border-radius: 10px; padding: 9px 15px 9px 11px; cursor: help; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); letter-spacing: 0; text-transform: none; text-align: left; }
.gl-chip::before { content: ''; flex: 0 0 22px; height: 22px; margin-top: 1px; background: currentColor; color: var(--green); -webkit-mask: var(--gl-book) center / contain no-repeat; mask: var(--gl-book) center / contain no-repeat; }
.gl-chip .gl-ic { display: none; }
.gl-chip b { color: var(--ink); font-weight: 700; margin-right: 2px; }
.gl-chip b::after { content: ':'; }
.gl-chip:hover { border-color: rgba(62, 224, 143, .45); }
.gl-chip.cyan { border-left-color: var(--cyan); } .gl-chip.cyan::before { color: var(--cyan); }
.gl-chip.violet { border-left-color: var(--violet); } .gl-chip.violet::before { color: var(--violet); }
.gl-chip.gold { border-left-color: var(--gold); } .gl-chip.gold::before { color: var(--gold); }
.gl-chip.amber { border-left-color: var(--amber); } .gl-chip.amber::before { color: var(--amber); }
.gl-chip.red { border-left-color: var(--red); } .gl-chip.red::before { color: var(--red); }
.gl-chip.sm { font-size: 18px; padding: 7px 13px 7px 10px; }
.gl-dock { position: absolute; z-index: 4; display: flex; flex-direction: column; gap: 10px; }
.gl-dock.row { flex-direction: row; flex-wrap: wrap; align-items: flex-start; }
:root { --gl-book: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linejoin='round'%3E%3Cpath d='M2 5.5c3.3-1.6 6.6-1.6 10 .9 3.4-2.5 6.7-2.5 10-.9v13.6c-3.3-1.5-6.6-1.5-10 1-3.4-2.5-6.7-2.5-10-1z'/%3E%3Cpath d='M12 6.4v13.6'/%3E%3C/svg%3E"); }

#gloss-pop { position: absolute; left: 0; top: 0; z-index: 80; width: 540px; background: rgba(5, 16, 11, .97); border: 1px solid var(--line2); border-top: 3px solid var(--green); border-radius: 14px; padding: 18px 24px 16px; box-shadow: 0 24px 80px rgba(0, 0, 0, .65); color: var(--ink); opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity .18s, transform .25s var(--ease-out); }
#gloss-pop.above { transform: translateY(-8px); }
#gloss-pop.on { opacity: 1; transform: none; }
#gloss-pop.measure { visibility: hidden; opacity: 0; transition: none; }
#gloss-pop::after { content: ''; position: absolute; left: var(--ax, 50%); top: -10px; width: 16px; height: 16px; margin-left: -8px; background: inherit; border-left: 1px solid var(--line2); border-top: 1px solid var(--line2); transform: rotate(45deg); }
#gloss-pop.above::after { top: auto; bottom: -9px; transform: rotate(225deg); }
#gloss-pop[data-cat="mh"] { border-top-color: var(--cyan); } #gloss-pop[data-cat="cs"] { border-top-color: var(--amber); }
#gloss-pop[data-cat="qt"] { border-top-color: var(--violet); } #gloss-pop[data-cat="pl"] { border-top-color: var(--gold); }
#gloss-pop .gp-k { font: 700 27px/1.15 var(--font); letter-spacing: -.01em; }
#gloss-pop .gp-en { font: 400 15px/1.3 var(--mono); color: var(--ink3); margin-top: 5px; }
#gloss-pop .gp-d { font: 400 22px/1.42 var(--font); color: var(--ink2); margin: 10px 0 10px; }
#gloss-pop .gp-s { font: 400 14px/1.35 var(--mono); color: var(--ink4); }
#gloss-pop .gp-h { font: 500 13px/1 var(--mono); color: var(--ink4); margin-top: 10px; letter-spacing: .05em; }
#gloss-pop.pinned .gp-h::after { content: ' · bấm lần nữa để đóng'; }

#gloss-ov { position: absolute; inset: 0; z-index: 90; background: radial-gradient(1200px 800px at 30% 20%, rgba(10, 34, 24, .94), rgba(2, 8, 5, .95)); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); padding: 78px 120px 96px; display: flex; flex-direction: column; opacity: 0; visibility: hidden; transition: opacity .3s var(--ease-out), visibility 0s .3s; }
#gloss-ov.on { opacity: 1; visibility: visible; transition: opacity .35s var(--ease-out), visibility 0s; }
#gloss-ov .go-head { display: flex; align-items: baseline; gap: 28px; padding-bottom: 22px; border-bottom: 1px solid var(--line2); }
#gloss-ov .go-k { display: flex; align-items: center; gap: 14px; font: 600 22px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--green); }
#gloss-ov .go-k svg { width: 30px; height: 30px; fill: var(--green); }
#gloss-ov .go-n { font: 700 18px/1 var(--mono); color: var(--bg); background: var(--green); border-radius: 999px; padding: 6px 11px; letter-spacing: 0; }
#gloss-ov .go-t { font: 600 26px/1.2 var(--font); color: var(--ink2); flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#gloss-ov .go-x { font: 500 16px/1 var(--mono); color: var(--ink3); border: 1px solid var(--line2); border-radius: 8px; padding: 8px 12px; }
#gloss-ov .go-grid { display: grid; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); gap: 20px 22px; margin-top: 30px; align-content: start; overflow: hidden; }
#gloss-ov .go-card { background: var(--panel2); border: 1px solid var(--line); border-left: 4px solid var(--green); border-radius: 16px; padding: 20px 26px 18px; }
#gloss-ov.on .go-card { animation: rs-enter .7s var(--ease-out) both; animation-delay: calc(var(--i) * 55ms); }
#gloss-ov .go-card[data-cat="mh"] { border-left-color: var(--cyan); } #gloss-ov .go-card[data-cat="cs"] { border-left-color: var(--amber); }
#gloss-ov .go-card[data-cat="qt"] { border-left-color: var(--violet); } #gloss-ov .go-card[data-cat="pl"] { border-left-color: var(--gold); }
#gloss-ov .go-card h4 { margin: 0; font: 700 28px/1.15 var(--font); letter-spacing: -.01em; color: var(--ink); }
#gloss-ov .go-en { font: 400 15px/1.3 var(--mono); color: var(--ink3); margin-top: 6px; }
#gloss-ov .go-card p { margin: 10px 0 10px; font: 400 22px/1.42 var(--font); color: var(--ink2); }
#gloss-ov .go-src { font: 400 14px/1.35 var(--mono); color: var(--ink4); }
#gloss-ov.dense .go-grid { gap: 14px 16px; margin-top: 22px; }
#gloss-ov.dense .go-card { padding: 14px 18px 12px; }
#gloss-ov.dense .go-card h4 { font-size: 23px; }
#gloss-ov.dense .go-card p { font-size: 19px; margin: 6px 0; }
#gloss-ov.dense .go-src { font-size: 13px; }
#gloss-ov .go-empty { margin-top: 60px; font: 400 30px var(--font); color: var(--ink3); }
/* inline visible gloss: a footnote-style line with the book icon (no box) */
.gl-note { display: inline-flex; align-items: baseline; gap: 8px; font-size: 18px; line-height: 1.32; color: var(--ink2); cursor: help; }
.gl-note::before { content: ''; flex: 0 0 18px; height: 18px; align-self: flex-start; margin-top: 2px; background: var(--green); -webkit-mask: var(--gl-book) center / contain no-repeat; mask: var(--gl-book) center / contain no-repeat; }
.gl-note b { color: var(--ink); }