/* =========================================================
   Aidely — Design System
   Editorial · Minimal · AI-native · Swiss-grid · No shadows · No gradients
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  /* Color */
  --ink:        #0E0E0C;
  --ink-2:      #1C1C19;
  --paper:      #FBFAF6;
  --paper-2:    #F3F1EA;
  --line:       #E4E1D8;
  --line-2:     #D6D2C7;
  --muted:      #6E6A60;
  --muted-2:    #8C887E;
  --signal:     #C2410C;   /* ember — used sparingly */
  --ok:         #2F7D32;
  --warn:       #8A6D00;
  --err:        #B00020;

  /* Typography */
  --font-sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: "Instrument Serif", "Times New Roman", Georgia, serif;
  --font-mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Scale (4px) */
  --s-1:  4px;
  --s-2:  8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  20px;
  --s-6:  24px;
  --s-8:  32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;
  --s-20: 80px;
  --s-24: 96px;
  --s-32: 128px;

  /* Radius */
  --r-0:  0px;
  --r-1:  4px;
  --r-2:  6px;
  --r-3:  10px;
  --r-pill: 999px;

  /* Layout */
  --container: 1240px;
  --container-narrow: 880px;
  --gutter: 24px;

  /* Borders */
  --b: 1px solid var(--line);
  --b-2: 1px solid var(--line-2);

  /* Transitions */
  --ease: cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "ss01","ss02","cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }
hr { border: 0; border-top: var(--b); margin: var(--s-12) 0; }
::selection { background: var(--ink); color: var(--paper); }

/* ---------- Typography ---------- */
.serif { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.01em; }
.mono  { font-family: var(--font-mono); font-size: 0.86em; letter-spacing: -0.01em; }

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 500; letter-spacing: -0.02em; line-height: 1.08; }

.h-display {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.025em;
}
.h-1 { font-size: clamp(36px, 4.6vw, 64px); line-height: 1.05; letter-spacing: -0.025em; }
.h-2 { font-size: clamp(28px, 3.2vw, 44px); line-height: 1.1;  letter-spacing: -0.02em; }
.h-3 { font-size: clamp(22px, 2.2vw, 28px); line-height: 1.18; letter-spacing: -0.015em; }
.h-4 { font-size: 18px; line-height: 1.3; letter-spacing: -0.01em; }

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.eyebrow::before {
  content: "";
  width: 18px; height: 1px;
  background: var(--ink);
  display: inline-block;
}

p { margin: 0 0 var(--s-4); }
.lede { font-size: clamp(18px, 1.5vw, 22px); line-height: 1.5; color: var(--muted); max-width: 62ch; }
small, .small { font-size: 13px; color: var(--muted); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section { padding: var(--s-24) 0; }
.section-sm { padding: var(--s-16) 0; }
.section-lg { padding: var(--s-32) 0; }

.grid { display: grid; gap: var(--s-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--s-6); }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.flex { display: flex; }
.row { display: flex; flex-wrap: wrap; gap: var(--s-4); }
.between { justify-content: space-between; }
.center { justify-content: center; align-items: center; text-align: center; }
.align-c { align-items: center; }
.gap-2 { gap: var(--s-2); } .gap-3 { gap: var(--s-3); } .gap-4 { gap: var(--s-4); }
.gap-6 { gap: var(--s-6); } .gap-8 { gap: var(--s-8); }
.mt-0 { margin-top: 0; } .mt-2 { margin-top: var(--s-2); } .mt-4 { margin-top: var(--s-4); }
.mt-6 { margin-top: var(--s-6); } .mt-8 { margin-top: var(--s-8); } .mt-10 { margin-top: var(--s-10); }
.mt-12 { margin-top: var(--s-12); } .mt-16 { margin-top: var(--s-16); }
.mb-2 { margin-bottom: var(--s-2); } .mb-4 { margin-bottom: var(--s-4); }
.mb-6 { margin-bottom: var(--s-6); } .mb-8 { margin-bottom: var(--s-8); }
.tc { text-align: center; } .tl { text-align: left; } .tr { text-align: right; }
.muted { color: var(--muted); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 12px 18px;
  border-radius: var(--r-2);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: -0.005em;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: transform .15s var(--ease), background .15s var(--ease), color .15s var(--ease), border-color .15s var(--ease);
}
.btn:hover { background: var(--ink-2); }
.btn:active { transform: translateY(1px); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-secondary:hover { background: var(--paper-2); border-color: var(--ink); }
.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ink);
  padding: 10px 12px;
}
.btn-ghost:hover { background: var(--paper-2); }
.btn-lg { padding: 16px 22px; font-size: 15px; }
.btn-sm { padding: 8px 12px; font-size: 13px; }
.btn-arrow::after {
  content: "→";
  font-size: 16px;
  margin-left: 2px;
  transition: transform .2s var(--ease);
}
.btn-arrow:hover::after { transform: translateX(3px); }

/* ---------- Badges / Tags ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 4px 10px;
  border: var(--b);
  border-radius: var(--r-pill);
  font-size: 12px;
  color: var(--muted);
  background: var(--paper);
}
.badge-dot::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--signal);
}
.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: var(--b);
  border-radius: var(--r-1);
  color: var(--muted);
}

/* ---------- Cards / Surfaces ---------- */
.card {
  border: var(--b);
  border-radius: var(--r-3);
  background: var(--paper);
  padding: var(--s-8);
}
.card-tight { padding: var(--s-6); }
.card-flat { background: var(--paper-2); border: var(--b); }
.divide > * + * { border-top: var(--b); }
.bordered { border: var(--b); border-radius: var(--r-3); }

/* ---------- Navbar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 246, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: var(--b);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--s-8);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 17px;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 22px; height: 22px;
  border: 1.5px solid var(--ink);
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.brand-mark::before, .brand-mark::after {
  content: "";
  position: absolute;
  background: var(--ink);
}
.brand-mark::before { width: 9px; height: 1.5px; top: 9px; left: 5px; }
.brand-mark::after  { width: 1.5px; height: 9px; top: 5px; left: 9px; }

.nav-links { display: flex; gap: var(--s-6); align-items: center; }
.nav-links a {
  font-size: 14px;
  color: var(--muted);
  padding: 6px 2px;
  position: relative;
  transition: color .15s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-cta { display: flex; gap: var(--s-2); align-items: center; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border: var(--b); border-radius: var(--r-2);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 16px; height: 1.5px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before { content: ""; position: absolute; top: -5px; left: 0; width: 16px; }
.nav-toggle span::after  { content: ""; position: absolute; top:  5px; left: 0; width: 16px; }

/* ---------- Footer ---------- */
.footer {
  border-top: var(--b);
  background: var(--paper);
  padding: var(--s-16) 0 var(--s-8);
  margin-top: var(--s-16);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--s-8);
}
.footer h5 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: var(--s-4);
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--s-2); }
.footer a { color: var(--ink); font-size: 14px; }
.footer a:hover { color: var(--signal); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: var(--s-12);
  padding-top: var(--s-6);
  border-top: var(--b);
  font-size: 13px; color: var(--muted);
}

/* ---------- Hero ---------- */
.hero { padding: clamp(64px, 9vw, 128px) 0 var(--s-16); }
.hero-eyebrow { margin-bottom: var(--s-6); }
.hero h1 { max-width: 16ch; }
.hero .lede { margin-top: var(--s-6); }
.hero-cta { display: flex; gap: var(--s-3); margin-top: var(--s-8); flex-wrap: wrap; }

/* ---------- Feature grids / Bento ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--line);
  border: var(--b);
  border-radius: var(--r-3);
  overflow: hidden;
}
.bento > .cell {
  background: var(--paper);
  padding: var(--s-8);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.cell-3 { grid-column: span 3; }
.cell-2 { grid-column: span 2; }
.cell-4 { grid-column: span 4; }
.cell-6 { grid-column: span 6; }
.cell h3 { font-size: 20px; letter-spacing: -0.015em; }
.cell p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------- Logo strip ---------- */
.logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--s-6);
  align-items: center;
  padding: var(--s-8) 0;
  border-top: var(--b);
  border-bottom: var(--b);
}
.logos .logo {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--muted);
  text-align: center;
  letter-spacing: -0.01em;
}

/* ---------- Pricing ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
.price-card {
  border: var(--b);
  border-radius: var(--r-3);
  padding: var(--s-8);
  background: var(--paper);
  display: flex; flex-direction: column;
}
.price-card.featured {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}
.price-card.featured .muted { color: var(--muted-2); }
.price-card .price {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1;
  letter-spacing: -0.025em;
  margin: var(--s-6) 0 var(--s-2);
}
.price-card ul { list-style: none; padding: 0; margin: var(--s-6) 0; display: flex; flex-direction: column; gap: var(--s-3); font-size: 14.5px; }
.price-card li { display: flex; gap: var(--s-2); align-items: flex-start; }
.price-card li::before {
  content: "";
  flex: 0 0 14px; height: 14px; margin-top: 6px;
  border-left: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  width: 8px;
}

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 2px; border: var(--b); border-radius: var(--r-2); padding: 4px; background: var(--paper-2); width: max-content; }
.tab {
  padding: 8px 14px;
  font-size: 13px;
  color: var(--muted);
  border-radius: var(--r-1);
  cursor: pointer;
  border: 1px solid transparent;
}
.tab[aria-selected="true"] { background: var(--paper); color: var(--ink); border-color: var(--line); }
.tab-panel { display: none; padding-top: var(--s-8); }
.tab-panel.active { display: block; }

/* ---------- Accordion ---------- */
.accordion { border-top: var(--b); }
.accordion-item { border-bottom: var(--b); }
.accordion-trigger {
  width: 100%;
  text-align: left;
  padding: var(--s-6) 0;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
  display: flex; justify-content: space-between; align-items: center;
}
.accordion-trigger::after {
  content: "+";
  font-size: 22px; color: var(--muted);
  transition: transform .2s var(--ease);
}
.accordion-item[data-open="true"] .accordion-trigger::after { transform: rotate(45deg); }
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s var(--ease);
}
.accordion-item[data-open="true"] .accordion-content { max-height: 400px; padding-bottom: var(--s-6); }
.accordion-content p { color: var(--muted); margin: 0; max-width: 70ch; }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: var(--s-2); margin-bottom: var(--s-4); }
.field label { font-size: 13px; color: var(--muted); }
.input, .textarea, .select {
  background: var(--paper);
  border: var(--b);
  border-radius: var(--r-2);
  padding: 12px 14px;
  font-size: 14.5px;
  width: 100%;
  transition: border-color .15s var(--ease);
}
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--ink);
}
.textarea { min-height: 140px; resize: vertical; }
.checkbox { display: flex; gap: var(--s-2); align-items: flex-start; font-size: 14px; color: var(--muted); }

/* ---------- Tables ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.table th, .table td { padding: var(--s-4) var(--s-3); text-align: left; border-bottom: var(--b); }
.table th { font-weight: 500; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; }
.table tr:last-child td { border-bottom: 0; }

/* ---------- Code / Terminal ---------- */
.code {
  font-family: var(--font-mono);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-3);
  padding: var(--s-6);
  font-size: 13.5px;
  line-height: 1.6;
  overflow-x: auto;
}
.code .kw { color: #C8A878; }
.code .str { color: #B6CDA5; }
.code .com { color: #6F6B61; font-style: italic; }
.code .fn { color: #E0D5BD; }

/* ---------- Dashboard preview ---------- */
.app-frame {
  border: var(--b);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--paper);
}
.app-bar {
  display: flex; align-items: center; gap: var(--s-3);
  padding: 10px 14px;
  border-bottom: var(--b);
  background: var(--paper-2);
  font-size: 12px; color: var(--muted);
}
.app-dot { width: 9px; height: 9px; border-radius: 50%; border: 1px solid var(--line-2); }
.app-body { padding: var(--s-6); }

/* ---------- Stats ---------- */
.stat { display: flex; flex-direction: column; gap: var(--s-1); padding: var(--s-6) 0; }
.stat .n { font-family: var(--font-serif); font-size: 48px; line-height: 1; letter-spacing: -0.02em; }
.stat .l { font-size: 13px; color: var(--muted); }

/* ---------- Quotes ---------- */
.quote {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 36ch;
}
.attr { display: flex; align-items: center; gap: var(--s-3); margin-top: var(--s-6); font-size: 14px; color: var(--muted); }
.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: var(--b);
  background: var(--paper-2);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; color: var(--muted);
}

/* ---------- CTA band ---------- */
.cta-band {
  border: var(--b);
  border-radius: var(--r-3);
  padding: clamp(40px, 6vw, 80px);
  background: var(--ink);
  color: var(--paper);
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-8);
  flex-wrap: wrap;
}
.cta-band h2 { font-family: var(--font-serif); font-weight: 400; font-size: clamp(28px, 3.4vw, 44px); max-width: 18ch; }
.cta-band .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.cta-band .btn:hover { background: var(--paper-2); border-color: var(--paper-2); }
.cta-band .btn-secondary { background: transparent; color: var(--paper); border-color: var(--muted-2); }

/* ---------- Workflow diagram ---------- */
.wf {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--s-3);
  align-items: stretch;
}
.wf .step {
  border: var(--b);
  border-radius: var(--r-2);
  padding: var(--s-4);
  background: var(--paper);
  font-size: 13.5px;
  display: flex; flex-direction: column; gap: 6px;
  position: relative;
}
.wf .step .n { font-family: var(--font-mono); font-size: 11px; color: var(--muted); }
.wf .step h4 { font-size: 14px; letter-spacing: -0.005em; }
.wf .step p { color: var(--muted); margin: 0; font-size: 13px; }

/* ---------- Sidebar (docs) ---------- */
.docs { display: grid; grid-template-columns: 240px 1fr; gap: var(--s-10); align-items: start; }
.docs aside { position: sticky; top: 88px; }
.docs aside h5 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); margin: var(--s-6) 0 var(--s-2); }
.docs aside ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.docs aside a { font-size: 14px; color: var(--muted); padding: 4px 0; display: block; }
.docs aside a.active, .docs aside a:hover { color: var(--ink); }
.docs article h2 { margin-top: var(--s-10); }
.docs article p { color: var(--ink); }
.docs article p, .docs article li { font-size: 16px; }

/* ---------- Auth ---------- */
.auth-shell {
  min-height: calc(100vh - 64px);
  display: grid; grid-template-columns: 1fr 1fr;
}
.auth-form { padding: var(--s-16); display: flex; align-items: center; justify-content: center; }
.auth-form .inner { width: 100%; max-width: 380px; }
.auth-side {
  border-left: var(--b);
  background: var(--paper-2);
  padding: var(--s-16);
  display: flex; flex-direction: column; justify-content: space-between;
}

/* ---------- Misc ---------- */
.kbd {
  display: inline-block;
  padding: 2px 6px;
  border: var(--b);
  border-radius: var(--r-1);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
}
.link { color: var(--ink); border-bottom: 1px solid var(--line-2); padding-bottom: 1px; }
.link:hover { border-color: var(--ink); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(8px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 12; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .cell-3, .cell-2, .cell-4, .cell-6 { grid-column: span 2; }
  .price-grid { grid-template-columns: 1fr; }
  .wf { grid-template-columns: repeat(2, 1fr); }
  .docs { grid-template-columns: 1fr; }
  .docs aside { position: static; }
  .auth-shell { grid-template-columns: 1fr; }
  .auth-side { display: none; }
  .logos { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-links, .nav-cta .desktop-only { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.open .nav-links {
    display: flex;
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: var(--paper);
    border-bottom: var(--b);
    padding: var(--s-4) var(--gutter);
    gap: var(--s-3);
  }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--s-3); align-items: flex-start; }
  .logos { grid-template-columns: repeat(2, 1fr); }
  .cta-band { flex-direction: column; align-items: flex-start; text-align: left; }
  .section { padding: var(--s-16) 0; }
  .section-lg { padding: var(--s-20) 0; }
}