/* AIzexis — design system
   Sketchy-professional: Caveat headings, warm terracotta accent, paper palette */

/* ─── Fonts ──────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@500;600;700&family=Kalam:wght@300;400;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── Variables ──────────────────────────────────── */
:root {
  --ink:         #1a1614;
  --ink2:        #3a322c;
  --muted:       #8a7e74;
  --paper:       #fbf8f3;
  --paper2:      #f1ece2;
  --accent:      #c96442;
  --accent-dark: #a8512f;
  --accent-tint: rgba(201,100,66,.11);
  --fh: 'Caveat', cursive;
  --fb: 'Kalam', cursive;
  --fm: 'JetBrains Mono', 'Courier New', monospace;
}

/* ─── Reset ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--paper);
  font-family: var(--fb);
  color: var(--ink);
  line-height: 1.4;
  letter-spacing: .2px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
hr { border: none; border-top: 1.5px solid var(--ink); }
hr.dash { border-top-style: dashed; }

/* ─── Typography ─────────────────────────────────── */
h1, h2, h3 {
  font-family: var(--fh);
  font-weight: 700;
  letter-spacing: .5px;
  line-height: 1.05;
  color: var(--ink);
}
h1 { font-size: 64px; }
h2 { font-size: 36px; }
h3 { font-size: 22px; }
p  { font-size: 15px; color: var(--ink2); line-height: 1.55; }

.lbl {
  font-family: var(--fm);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
}
.tiny { font-size: 12px; color: var(--muted); line-height: 1.4; }

/* ─── Layout ─────────────────────────────────────── */
.wrap  { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
.sec   { max-width: 1100px; margin: 0 auto; padding: 60px 40px; }
.sec-sm{ max-width: 1100px; margin: 0 auto; padding: 30px 40px; }

/* full-bleed colour bands — put .sec inside */
.band-ink    { background: var(--ink); color: var(--paper); }
.band-paper2 { background: var(--paper2); }

.row  { display: flex; gap: 14px; align-items: flex-start; }
.col  { display: flex; flex-direction: column; gap: 14px; }
.grow { flex: 1 1 0; min-width: 0; }

/* ─── Nav ────────────────────────────────────────── */
.nav-shell {
  position: sticky; top: 0; z-index: 100;
  background: var(--paper);
  border-bottom: 1.5px solid var(--ink);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 14px 40px;
  display: flex; justify-content: space-between; align-items: center;
}
.nav-links { display: flex; gap: 20px; font-size: 14px; }
.nav-links a { color: var(--ink); transition: color .12s; }
.nav-links a:hover, .nav-links a.cur { color: var(--accent); }
.nav-links a.cur { font-weight: 700; }

/* ─── Logo ───────────────────────────────────────── */
.logo { font-family: var(--fh); font-size: 24px; font-weight: 700; }
.logo.sm { font-size: 18px; }
.logo b { color: var(--accent); font-weight: 700; }

/* ─── Buttons ────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  font: 14px/1 var(--fb);
  cursor: pointer;
  background: var(--paper); color: var(--ink);
  transition: background .15s, color .15s, border-color .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.solid  { background: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--ink2); border-color: var(--ink2); }
.btn.accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

/* ─── Chips ──────────────────────────────────────── */
.chip {
  display: inline-flex; align-items: center;
  padding: 4px 12px;
  border: 1.2px solid var(--ink); border-radius: 999px;
  font: 12px/1 var(--fb);
  background: var(--paper); cursor: pointer;
  transition: background .12s;
}
.chip:hover { background: var(--paper2); }
.chip.cur, .chip.accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.pill-row { display: flex; flex-wrap: wrap; gap: 6px; }

/* ─── Boxes ──────────────────────────────────────── */
.box {
  border: 1.5px solid var(--ink);
  border-radius: 9px 6px 8px 7px / 7px 9px 6px 8px;
  padding: 16px;
  background: var(--paper);
  position: relative;
}
.box.dash    { border-style: dashed; }
.box.fill    { background: var(--ink); color: var(--paper); }
.box.fill p  { color: var(--paper2); }
.box.fill h2,.box.fill h3 { color: var(--paper); }
.box.tint    { background: var(--accent-tint); }
.box.accent-border { border-color: var(--accent); }

/* boxes inside dark bands get inverted borders */
.band-ink .box { background: transparent; border-color: var(--paper); }
.band-ink .box h3 { color: var(--paper); }
.band-ink .box p  { color: var(--paper2); font-size: 13px; }

/* ─── Grids ──────────────────────────────────────── */
.g2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.g3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.g4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.g5 { display: grid; grid-template-columns: repeat(5,1fr); gap: 14px; }

/* ─── Text effects ───────────────────────────────── */
.ul {
  position: relative;
  display: inline;
}
.ul::after {
  content: "";
  position: absolute; left: -4px; right: -4px; bottom: -5px;
  height: 8px;
  background: var(--accent); opacity: .55;
  border-radius: 50%; transform: skewX(-8deg);
  z-index: -1; pointer-events: none;
}

.sk {
  text-decoration: line-through;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  color: var(--muted);
}

.annot {
  font-family: var(--fh); color: var(--accent);
  font-size: 16px; display: inline-flex; align-items: center; gap: 6px;
}

/* ─── Logo row ───────────────────────────────────── */
.logo-row { display: flex; gap: 10px; margin-top: 10px; }
.logo-ph {
  flex: 1; height: 40px;
  display: flex; align-items: center; justify-content: center;
  font: 11px/.9 var(--fm); letter-spacing: .15em; color: var(--muted);
  border: 1.5px solid var(--ink); border-radius: 6px;
  background: repeating-linear-gradient(135deg,var(--paper2),var(--paper2) 8px,transparent 8px,transparent 16px);
}

/* ─── Stats ──────────────────────────────────────── */
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat .num { font: 700 42px/1 var(--fh); color: var(--ink); }

/* ─── Ring ───────────────────────────────────────── */
.ring {
  width: 64px; height: 64px;
  border: 1.5px solid var(--ink); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font: 700 22px/1 var(--fh); flex-shrink: 0; background: var(--paper);
}
.ring.accent { border-color: var(--accent); color: var(--accent); }

/* ─── Portrait placeholder ───────────────────────── */
.portrait {
  height: 160px; margin-bottom: 12px;
  border: 1.5px solid var(--ink); border-radius: 6px;
  background: repeating-linear-gradient(135deg,var(--paper2),var(--paper2) 8px,transparent 8px,transparent 16px);
  display: flex; align-items: center; justify-content: center;
  font: 700 48px/1 var(--fh); color: var(--muted);
}

/* ─── Case diagrams ──────────────────────────────── */
.diagram { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; row-gap: 12px; }
.d-step {
  flex: 1 1 120px; min-width: 100px; max-width: 175px;
  padding: 10px 12px; border-radius: 6px;
  border: 1.5px solid var(--ink); background: var(--paper);
}
.d-step.model { border-color: var(--accent); }
.d-step.out   { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.d-step .di   { font: 9px/1 var(--fm); color: var(--muted); }
.d-step.out .di { color: rgba(241,236,226,.6); }
.d-step .dn   { font: 700 17px/1.1 var(--fh); margin-top: 3px; color: var(--ink); }
.d-step.model .dn { color: var(--accent); }
.d-step.out .dn   { color: var(--paper); }
.d-step .ds   { font-size: 11px; margin-top: 4px; color: var(--ink2); }
.d-step.out .ds   { color: var(--paper2); }
.d-arr { font: 22px/1 var(--fh); color: var(--accent); flex-shrink: 0; }

/* ─── Pricing ────────────────────────────────────── */
.tier-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; align-items: start; }
.tier {
  border: 1.5px solid var(--ink);
  border-radius: 9px 6px 8px 7px / 7px 9px 6px 8px;
  padding: 22px;
  display: flex; flex-direction: column; height: 100%;
  background: var(--paper);
}
.tier.featured { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.tier.featured h2 { color: var(--paper); }
.tier.featured .lbl { color: rgba(241,236,226,.6); }
.tier.featured p { color: var(--paper2); }
.tier.featured hr { border-color: rgba(241,236,226,.25); }
.tier ul { list-style: none; display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--ink2); }
.tier.featured ul { color: var(--paper2); }
.tier-spacer { flex: 1; }

/* ─── Footer ─────────────────────────────────────── */
.foot-shell { border-top: 1.5px solid var(--ink); }
.foot-inner {
  max-width: 1100px; margin: 0 auto; padding: 20px 40px;
  display: flex; justify-content: space-between; align-items: center;
}
.foot-links { display: flex; gap: 20px; font-size: 12px; color: var(--muted); }
.foot-links a:hover { color: var(--accent); }

/* ─── Scribble (decorative annotation) ──────────── */
.scribble {
  position: absolute;
  font: 18px/1 var(--fh);
  color: var(--accent);
  pointer-events: none;
}

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 960px) {
  h1 { font-size: 48px; }
  h2 { font-size: 28px; }
  .sec, .sec-sm { padding-left: 24px; padding-right: 24px; }
  .nav-inner { padding-left: 24px; padding-right: 24px; }
  .g4, .g5 { grid-template-columns: repeat(2,1fr); }
  .g3 { grid-template-columns: repeat(2,1fr); }
  .tier-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  h1 { font-size: 36px; }
  .nav-links { display: none; }
  .sec, .sec-sm { padding-left: 16px; padding-right: 16px; }
  .nav-inner { padding-left: 16px; padding-right: 16px; }
  .g2, .g3, .g4, .g5 { grid-template-columns: 1fr; }
  .logo-row { flex-wrap: wrap; }
  .logo-ph  { flex: 1 1 calc(33% - 6px); min-width: 80px; }
  .foot-inner { flex-direction: column; gap: 12px; text-align: center; }
  .scribble { display: none; }
}