/* html-ppt :: base.css — reset + shared tokens + layout primitives */
/* Default tokens. Themes in assets/themes/*.css override the :root block. */
:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f8;
  --surface: #ffffff;
  --surface-2: #f2f2f4;
  --border: rgba(0,0,0,.08);
  --border-strong: rgba(0,0,0,.16);
  --text-1: #111216;
  --text-2: #55596a;
  --text-3: #8a8f9e;
  --accent: #3b6cff;
  --accent-2: #7a5cff;
  --accent-3: #ff5c8a;
  --good: #1aaf6c;
  --warn: #f5a524;
  --bad:  #e0445a;
  --grad: linear-gradient(135deg,#3b6cff,#7a5cff 55%,#ff5c8a);
  --grad-soft: linear-gradient(135deg,#eef2ff,#f5ecff 55%,#ffeef5);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --shadow: 0 10px 30px rgba(18,24,40,.08), 0 2px 6px rgba(18,24,40,.04);
  --shadow-lg: 0 24px 60px rgba(18,24,40,.14), 0 6px 16px rgba(18,24,40,.06);
  --font-sans: 'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif;
  --font-serif: 'Playfair Display','Noto Serif SC',Georgia,serif;
  --font-mono: 'JetBrains Mono','IBM Plex Mono',SFMono-Regular,Menlo,monospace;
  --font-display: var(--font-sans);
  --letter-tight: -.03em;
  --letter-normal: -.01em;
  --ease: cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text-1);
  font-family:var(--font-sans);font-weight:400;line-height:1.6;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  letter-spacing:var(--letter-normal)}
img,svg,video{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code,kbd,pre,samp{font-family:var(--font-mono)}

/* ================= SLIDE SYSTEM ================= */
.deck{position:relative;width:100vw;height:100vh;overflow:hidden;background:var(--bg)}
.slide{
  position:absolute;inset:0;
  display:flex;flex-direction:column;justify-content:center;
  padding:72px 96px;
  box-sizing:border-box;
  opacity:0;pointer-events:none;
  transition:opacity .5s var(--ease), transform .5s var(--ease);
  transform:translateX(30px);
  overflow:hidden;
}
.slide.is-active{opacity:1;pointer-events:auto;transform:translateX(0);z-index:2}
.slide.is-prev{transform:translateX(-30px)}

/* single-page standalone (used when a layout file is opened directly) */
body.single .slide{position:relative;width:100vw;height:100vh;opacity:1;transform:none;pointer-events:auto}

/* ================= TYPOGRAPHY ================= */
.eyebrow{font-size:13px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--text-3)}
.kicker{font-size:14px;font-weight:600;color:var(--accent);letter-spacing:.08em;text-transform:uppercase}
h1.title,.h1{font-family:var(--font-display);font-size:72px;line-height:1.05;font-weight:800;letter-spacing:var(--letter-tight);margin:0 0 18px;color:var(--text-1)}
h2.title,.h2{font-family:var(--font-display);font-size:54px;line-height:1.1;font-weight:700;letter-spacing:var(--letter-tight);margin:0 0 14px}
h3,.h3{font-size:32px;line-height:1.2;font-weight:600;letter-spacing:var(--letter-normal);margin:0 0 10px}
h4,.h4{font-size:22px;line-height:1.3;font-weight:600;margin:0 0 8px}
.lede{font-size:22px;line-height:1.55;color:var(--text-2);font-weight:300;max-width:62ch}
.dim{color:var(--text-2)}
.dim2{color:var(--text-3)}
.mono{font-family:var(--font-mono)}
.serif{font-family:var(--font-serif)}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* ================= LAYOUT PRIMITIVES ================= */
.stack>*+*{margin-top:14px}
.row{display:flex;gap:24px;align-items:center}
.row.wrap{flex-wrap:wrap}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.center{display:flex;align-items:center;justify-content:center;text-align:center}
.fill{flex:1}
.sp-t{padding-top:24px}.sp-b{padding-bottom:24px}
.mt-s{margin-top:8px}.mt-m{margin-top:18px}.mt-l{margin-top:32px}
.mb-s{margin-bottom:8px}.mb-m{margin-bottom:18px}.mb-l{margin-bottom:32px}

/* ================= CARDS ================= */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.card-soft{background:var(--surface-2);border:1px solid var(--border)}
.card-outline{background:transparent;border:1.5px solid var(--border-strong);box-shadow:none}
.card-accent{background:var(--surface);border-top:3px solid var(--accent)}
.card-hover{transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

.pill{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:500;
  background:var(--surface-2);color:var(--text-2);border:1px solid var(--border)}
.pill-accent{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);border-color:color-mix(in srgb,var(--accent) 28%,transparent)}

/* ================= BARS / DIVIDERS ================= */
.divider{height:1px;background:var(--border);width:100%}
.divider-accent{height:3px;width:72px;background:var(--accent);border-radius:2px}

/* ================= CHROME (header/footer/progress) ================= */
.deck-header{position:absolute;top:24px;left:40px;right:40px;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);letter-spacing:.12em;text-transform:uppercase;z-index:10;pointer-events:none}
.deck-footer{position:absolute;bottom:24px;left:40px;right:40px;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);z-index:10;pointer-events:none}
.slide-number::before{content:attr(data-current)}
.slide-number::after{content:" / " attr(data-total)}
.progress-bar{position:fixed;left:0;right:0;bottom:0;height:3px;background:transparent;z-index:20}
.progress-bar > span{display:block;height:100%;width:0;background:var(--accent);transition:width .3s var(--ease)}

/* ================= PRESENTER / OVERVIEW ================= */
.notes{display:none!important}
.notes-overlay{position:fixed;inset:auto 0 0 0;max-height:42vh;background:rgba(20,22,30,.95);color:#e8ebf4;
  padding:20px 32px;font-size:16px;line-height:1.6;border-top:1px solid rgba(255,255,255,.1);transform:translateY(100%);
  transition:transform .3s var(--ease);z-index:40;overflow:auto;font-family:var(--font-sans)}
.notes-overlay.open{transform:translateY(0)}
.overview{position:fixed;inset:0;background:rgba(10,12,18,.92);backdrop-filter:blur(12px);z-index:50;
  display:none;padding:40px;overflow:auto}
.overview.open{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-content:start}
.overview .thumb{background:var(--surface);border:1px solid var(--border);border-radius:12px;
  aspect-ratio:16/9;overflow:hidden;cursor:pointer;position:relative;color:var(--text-1);padding:16px;
  font-size:11px;transition:transform .2s var(--ease)}
.overview .thumb:hover{transform:scale(1.04)}
.overview .thumb .n{position:absolute;top:8px;left:10px;font-weight:700;font-size:14px;color:var(--text-3)}
.overview .thumb .t{position:absolute;bottom:10px;left:14px;right:14px;font-weight:600;color:var(--text-1)}

/* ================= UTILITY ================= */
.hidden{display:none!important}
.nowrap{white-space:nowrap}
.tr{text-align:right}.tc{text-align:center}.tl{text-align:left}
.uppercase{text-transform:uppercase;letter-spacing:.12em}

/* ================= PRINT ================= */
@media print{
  .slide{position:relative;opacity:1!important;transform:none!important;page-break-after:always;height:100vh}
  .deck-header,.deck-footer,.progress-bar,.notes-overlay,.overview{display:none!important}
}