:root{
  --django:#0C4B33; --django-l:#2E7D5B; --django-d:#092E20;
  --pg:#336791; --pg-l:#4A90C2; --pg-d:#244A66;
  --blue:#336791; --green:#2E7D5B; --amber:#D9820A; --red:#C94141; --violet:#7C5CFC;
  --ink:#0A1512; --body:#2B3A33; --muted:#5B6B63; --line:#D8E6DE;
  --bg:#F5F8F6; --white:#fff; --dark:#0A1512; --dark-line:#1E2E28;
  --navy:#0A1512; --navy-d:#06100C; --cyan:#0C4B33; --cyan-l:#2E7D5B;
  --django-ink:#0A5138; --pg-ink:#2A5D86; --green-ink:#2E7D5B; --amber-ink:#A36208; --red-ink:#C94141; --blue-ink:#2A5D86; --violet-ink:#5B3FD6;
  --cyan-ink:var(--django-ink);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--dark)}
.reveal-viewport{background:var(--dark)}
.reveal{font-family:'Inter',system-ui,sans-serif;font-size:42px;color:var(--body)}
.reveal .slides{text-align:left}
.reveal .slides section{height:100%;padding:0}
.reveal h1,.reveal h2,.reveal h3,.reveal h4{font-family:'Montserrat',sans-serif;color:var(--ink);text-transform:none;letter-spacing:-.5px;line-height:1.02;margin:0}
.reveal h1{font-size:2.3em;font-weight:800}
.reveal h2{font-size:1.4em;font-weight:800}
.reveal h3{font-size:1em;font-weight:700}
.reveal p{margin:.4em 0}
.reveal a{color:var(--pg)}
.reveal code,.reveal pre,.reveal .mono{font-family:'JetBrains Mono',monospace}
.reveal pre{box-shadow:none;font-size:.5em;width:100%}
.reveal pre code{border-radius:10px;padding:16px 18px;max-height:none}
.reveal .progress{color:var(--django-l)}
.reveal .controls{color:var(--django-l)}
.reveal .slide-number{background:transparent;color:var(--muted);font-family:'JetBrains Mono',monospace;font-size:14px}

/* layout */
section.light{background:var(--bg)}
section.dark{background:var(--dark);color:#A9C2B8}
section.dark h1,section.dark h2,section.dark h3{color:#fff}
section.navy{background:var(--dark);color:#C6E0D4}
section.navy h1,section.navy h2,section.navy h3{color:#fff}
.pad{padding:40px 56px 30px;height:100%;display:flex;flex-direction:column;justify-content:center;gap:.35em}
.top-rule{position:absolute;top:0;left:0;width:100%;height:6px;background:linear-gradient(90deg,var(--django) 60%,var(--pg))}
section.dark .top-rule,section.navy .top-rule{background:linear-gradient(90deg,var(--django-l) 60%,var(--pg-l))}
.kicker{font-family:'JetBrains Mono',monospace;font-size:.5em;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--django);margin-bottom:.35em}
section.dark .kicker{color:var(--django-l)}
section.navy .kicker{color:#7FC2A6}
.lead{color:var(--body);font-size:.68em}
section.dark .lead,section.dark p{color:#A9C2B8}
section.navy .lead{color:#C6E0D4}
.muted{color:var(--muted)}
.italic{font-style:italic}
.accent{color:var(--django)}
.grow{flex:1 1 auto;min-height:0}
.mt{margin-top:auto}

/* grid + cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.grid > *{min-width:0}
.card{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:22px 24px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center;box-shadow:0 1px 2px rgba(10,21,18,.05),0 10px 26px rgba(10,21,18,.06)}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:7px;background:var(--django)}
.card.n{border-color:var(--dark-line);background:#12211B}
.card.n h3{color:#fff}.card.n p{color:#A9C2B8}
.card .label{font-family:'JetBrains Mono',monospace;font-size:.38em;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.card .value{font-family:'Montserrat',sans-serif;font-weight:800;font-size:1.15em;color:var(--ink);line-height:1}
.card.n .value{color:#fff}
.card p{font-size:.5em;margin:.45em 0 0;color:var(--body);line-height:1.35}
.card .num{font-family:'Montserrat',sans-serif;font-weight:800;font-size:1.5em;line-height:1}
.a-navy::before{background:var(--ink)}.a-django::before{background:var(--django)}.a-pg::before{background:var(--pg)}.a-green::before{background:var(--green)}.a-amber::before{background:var(--amber)}.a-red::before{background:var(--red)}.a-violet::before{background:var(--violet)}

/* flow */
.flow{display:flex;align-items:stretch;gap:0;width:100%}
.flow .step{flex:1 1 0;min-width:0;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 10px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center}
.flow .step::before{content:"";position:absolute;top:0;left:0;right:0;height:7px;background:var(--django)}
.flow .step .n{font-family:'Montserrat';font-weight:800;font-size:1em;line-height:1}
.flow .step h4{font-size:.5em;font-weight:700;margin:.4em 0 .2em;line-height:1.05}
.flow .step small{font-size:.4em;color:var(--muted)}
.flow .arrow{display:flex;align-items:center;justify-content:center;color:var(--django);font-size:.7em;flex:0 0 0.5em;padding:0}

/* request flow */
.reqflow{display:flex;align-items:center;gap:10px;width:100%}
.reqflow .node{flex:1 1 0;min-width:0;text-align:center;border:1px solid var(--line);border-radius:12px;padding:14px 10px;background:#fff}
.reqflow .node b{display:block;font-family:'Montserrat';font-size:.5em;color:var(--ink)}
.reqflow .node small{font-size:.38em;color:var(--muted)}
.reqflow .node.t{border-color:#BCD9CC;background:#EAF4EF}
.reqflow .node.p{border-color:#C6D6E6;background:#EAF1F7}
.reqflow .arrow{color:var(--django);font-size:.7em;flex:0 0 auto}

/* method badges */
.method{display:inline-block;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.42em;letter-spacing:.04em;padding:4px 12px;border-radius:6px;color:#fff;line-height:1.4}
.method.get{background:var(--blue-ink)}
.method.post{background:var(--green-ink)}
.method.put{background:var(--amber-ink)}
.method.patch{background:var(--violet-ink)}
.method.delete{background:var(--red-ink)}

/* status chips */
.status{display:inline-block;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.42em;padding:5px 12px;border-radius:8px;line-height:1.4}
.status.s2{background:#E7F5EC;color:var(--green-ink);border:1px solid #C6E7D2}
.status.s3{background:#E7F1FC;color:var(--blue-ink);border:1px solid #C6DDF7}
.status.s4{background:#FDF1E0;color:var(--amber-ink);border:1px solid #F2D9B0}
.status.s5{background:#FDECEC;color:var(--red-ink);border:1px solid #F3C9C9}

/* terminal */
.term{background:#0C1613;border:1px solid #21352D;border-radius:14px;overflow:hidden;font-family:'JetBrains Mono',monospace;font-size:.5em;box-shadow:0 10px 30px rgba(10,21,18,.12)}
.term .bar{display:flex;align-items:center;gap:8px;background:#122019;padding:10px 16px;border-bottom:1px solid #21352d;color:var(--muted);font-size:.78em}
.term .bar .dots span{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:3px}
.term .body{padding:16px 20px;line-height:1.6;white-space:pre-wrap;color:#D7E6DE}
.term .body .c{color:#5FC9A0}.term .body .g{color:#8FD65A}.term .body .d{color:#7C9A8A}
.caret{display:inline-block;width:.55em;height:1.05em;background:#8FD65A;vertical-align:-.15em;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* IDE code block with filename bar */
.ide{border:1px solid #21352d;border-radius:14px;overflow:hidden;background:#0C1613;box-shadow:0 10px 30px rgba(10,21,18,.10)}
.ide .filebar{display:flex;align-items:center;gap:12px;background:#122019;border-bottom:1px solid #21352d;padding:10px 16px}
.ide .filebar .dots span{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:3px}
.ide .filebar .fname{font-family:'JetBrains Mono',monospace;font-size:.42em;color:#A9C2B8}
.ide pre{margin:0;width:100%}
.ide pre code{border-radius:0}

/* callouts */
.callout{display:flex;gap:12px;align-items:flex-start;background:#EAF4EF;border:1px solid #CBE3D7;border-radius:12px;padding:12px 16px;font-size:.5em;color:var(--body)}
.callout .ic{flex:0 0 auto;width:1.45em;height:1.45em;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.82em;color:#fff;background:var(--django-d)}
.callout.tip .ic{background:var(--green-ink)}
.callout.warn{background:#FDF1E0;border-color:#F2D9B0}
.callout.warn .ic{background:var(--amber-ink)}
.callout.err{background:#FDECEC;border-color:#F3C9C9}
.callout.err .ic{background:var(--red-ink)}
.callout.info{background:#EAF1F7;border-color:#C6D6E6}
.callout.info .ic{background:var(--blue-ink)}
.callout b{color:var(--ink)}
section.dark .callout,section.navy .callout{background:#12211B;border-color:var(--dark-line);color:#A9C2B8}
section.dark .callout b,section.navy .callout b{color:#fff}

/* key-value */
.kv{display:flex;gap:10px;align-items:baseline;font-size:.5em;padding:.28em 0;border-bottom:1px solid var(--line)}
.kv b{font-family:'JetBrains Mono',monospace;color:var(--django-ink);min-width:8em;font-size:.92em}
section.dark .kv,section.navy .kv{border-color:var(--dark-line)}
section.dark .kv b,section.navy .kv b{color:var(--django-l)}

/* database schemas diagram */
.db{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 10px 26px rgba(10,21,18,.07)}
.db .bar{display:flex;align-items:center;gap:10px;background:var(--pg);color:#fff;padding:10px 18px;font-family:'JetBrains Mono',monospace;font-size:.42em;letter-spacing:.04em}
.db .bar b{font-family:'Montserrat';font-size:1.1em}
.db .schemas{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:16px}
.db .schema{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#F7FBF9}
.db .schema .sname{font-family:'JetBrains Mono',monospace;font-size:.44em;font-weight:700;color:var(--django-ink)}
.db .schema.pub{border-color:var(--pg);background:#EAF1F7}
.db .schema.pub .sname{color:var(--pg-ink)}
.db .schema ul{margin:8px 0 0;padding-left:1.1em;font-size:.4em;color:var(--muted);line-height:1.6}
.db .schema .tag{display:inline-block;margin-top:6px;font-family:'JetBrains Mono';font-size:.36em;color:var(--muted)}

/* table + chips */
.reveal table{font-size:.5em;border-collapse:collapse;width:100%}
.reveal table th{font-family:'JetBrains Mono',monospace;font-size:.82em;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);text-align:left;padding:12px 14px;border-bottom:2px solid var(--line)}
.reveal table td{padding:12px 14px;border-bottom:1px solid var(--line)}
.reveal table tr:nth-child(even) td{background:rgba(12,75,51,.03)}
.reveal table td.c{text-align:center}
.chiprow{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-family:'JetBrains Mono',monospace;font-size:.42em;padding:8px 14px;border-radius:999px;border:1px solid var(--line);color:var(--body);background:#fff}
.chip.active{background:var(--django);color:#fff;border-color:var(--django)}

/* section divider number */
.sectionnum{font-family:'Montserrat';font-weight:800;font-size:3.2em;line-height:1;color:rgba(255,255,255,.14)}

/* agenda */
.agenda{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.3em}
.agenda li{display:flex;align-items:center;gap:.7em;font-size:.56em;padding:.5em .9em;border:1px solid var(--line);border-radius:12px;background:#fff}
.agenda li b{font-family:'JetBrains Mono',monospace;color:var(--django-ink);font-size:.85em}
.agenda li span{margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:.78em;color:var(--muted)}

/* cover */
.cover{display:grid;grid-template-columns:1.7fr 1fr;height:100%}
.cover .left{background:var(--dark);padding:48px;display:flex;flex-direction:column;justify-content:center}
.cover .right{background:#fff;position:relative;display:flex;align-items:center;justify-content:center;padding:36px}
.cover .right img.port{width:min(92%,420px);border-radius:16px;border:3px solid var(--django-l)}
.cover h1{color:#fff;font-size:1.22em;line-height:1.03}
.cover h1 .two{color:var(--django-l);display:block}
.cover .sub{color:#C6E0D4;font-size:.6em;margin-top:.7em}
.cover .who{margin-top:1.2em}
.cover .who strong{color:#fff;font-size:.6em;display:block}
.cover .who span{color:#9FB4D4;font-size:.5em}
.qr{background:#fff;border-radius:12px;padding:16px;text-align:center}
.qr img{width:170px;height:170px;display:block;margin:0 auto}
.qr strong{display:block;margin-top:8px;color:var(--ink);font-family:'Montserrat'}
.qr span{font-family:'JetBrains Mono',monospace;font-size:.4em;color:var(--pg)}
.pill{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:.44em;background:#EAF4EF;color:var(--django-ink);border-radius:999px;padding:6px 14px;margin:0 6px 6px 0}
.pill.pg{background:#EAF1F7;color:var(--pg-ink)}
.badge{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:.42em;padding:5px 12px;border-radius:6px;background:var(--django);color:#fff}

kbd{font-family:'JetBrains Mono',monospace;font-size:.42em;background:#fff;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:3px 8px;color:var(--ink)}

.foot{position:absolute;bottom:12px;left:56px;right:56px;display:flex;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:.42em;color:var(--muted);border-top:1px solid var(--line);padding-top:8px}
section.dark .foot,section.navy .foot{border-color:var(--dark-line);color:#7C9A8A}
.big{font-family:'Montserrat';font-weight:800;color:var(--ink)}
section.dark .big{color:#fff}