/*
 * PhoneIQ Design System v2 — proposed component primitives.
 * Import tokens.css before this file.
 */

/* ===== Layout (10.4:83-87, 410-434) ===== */
.shell { width: var(--shell); margin-inline: auto; }
.post-inner.shell { width: var(--post-shell); margin-inline: auto; }

.section {
  border-bottom: 1px solid var(--rule);
  padding: clamp(80px, 12vh, 128px) 0;
}
.section-alt { background: var(--paper); }
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .62fr);
  gap: 72px;
  align-items: end;
  margin-bottom: 52px;
}
.section-head h2 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(40px, 4.6vw, 60px);
  font-weight: 300;
  line-height: .98;
  letter-spacing: -.035em;
  text-wrap: balance;
}
.section-head h2 strong { font-weight: 500; }
.section-intro { margin: 0; color: var(--quiet); font-size: 17px; line-height: 1.6; }
.section-head.single { grid-template-columns: 1fr; gap: 18px; align-items: start; }
.section-head.single .section-intro { max-width: 640px; }

/* ===== Eyebrow (10.4:215-225) ===== */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  color: var(--quiet);
  font: 500 10px/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.eyebrow::before { content: ""; width: 36px; height: 1px; background: var(--signal); }

/* ===== Buttons (v2 guide:398-424; 10.4:159-213) ===== */
.button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 30px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 240ms var(--ease), color 240ms var(--ease), transform 240ms var(--ease), border-color 240ms var(--ease), box-shadow 240ms var(--ease);
}
.button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; transition: transform 240ms var(--ease); }
.button:hover svg { transform: translateX(3px); }
.button:active { transform: scale(.98); }
.button-primary { color: var(--paper); background: var(--ink); box-shadow: var(--shadow-soft); }
.button-primary:hover { color: #ffffff; background: var(--signal); border-color: var(--signal); }
html[data-theme="dark"] .button-primary { color: #111418; background: #f2f5f3; }
html[data-theme="dark"] .button-primary:hover { color: #ffffff; background: var(--signal); border-color: var(--signal); }
.button-secondary { color: var(--ink); background: color-mix(in srgb, var(--paper) 55%, transparent); border-color: var(--rule-strong); }
.button-secondary:hover { background: var(--paper-soft); border-color: var(--ink); }
.button-sm { min-height: 54px; padding: 0 26px; font-size: 16px; }

/* ===== Cards (v2 guide:427-500; 10.4:436-488, 653-686, 746-823) ===== */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px; }
.info-card {
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.info-card h3 { margin: 0; font-size: 20px; font-weight: 500; line-height: 1.2; letter-spacing: -.01em; }
.info-card p { margin: 0; color: var(--quiet); font-size: 15px; line-height: 1.55; }
.icon-chip {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  background: color-mix(in srgb, var(--signal) 12%, transparent);
  color: var(--signal);
}
.icon-chip svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.cost-card .cost-label { display: block; font-size: 20px; font-weight: 500; line-height: 1.2; letter-spacing: -.01em; margin-bottom: 10px; }
.cost-card .cost-line { margin: 0; color: var(--quiet); font-size: 15px; line-height: 1.55; }

.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.plan-card {
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.plan-card.featured {
  border-color: var(--signal);
  box-shadow: var(--shadow);
  background: color-mix(in srgb, var(--paper) 98%, var(--signal) 2%);
}
.plan-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--paper-soft);
  color: var(--quiet);
  font: 500 10px/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.plan-card.featured .plan-tag { background: var(--signal); color: #ffffff; }
.plan-card h3 { margin: 0; font-size: 26px; font-weight: 400; line-height: 1.1; letter-spacing: -.02em; }
.plan-card .plan-sub { margin: 0; color: var(--quiet); font-size: 16px; line-height: 1.55; }
.plan-card ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.plan-card li { position: relative; padding-left: 22px; color: var(--quiet); font-size: 15px; line-height: 1.5; }
.plan-card li::before { content: "✓"; position: absolute; left: 0; color: var(--complete); font-weight: 600; }
.plan-note { margin: 0; color: var(--faint); font: 500 11px/1.5 var(--mono); }

.logo-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.logo-mark {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 52px;
  padding: 0 15px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-soft);
  transition: border-color 220ms var(--ease), background-color 220ms var(--ease);
}
.logo-mark:hover { border-color: var(--rule-strong); background: var(--paper); }
.logo-glyph { width: 22px; height: 22px; flex: 0 0 auto; fill: none; stroke: var(--brand, var(--signal)); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.logo-word { font-size: 14px; font-weight: 500; letter-spacing: -.01em; line-height: 1.15; color: var(--ink); }

/* ===== Demo tablist (v2 guide:580-609; 10.4:510-623) ===== */
.demo-tabs { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.demo-tab {
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  background: var(--paper);
  color: var(--quiet);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}
.demo-tab:hover { background: var(--paper-soft); color: var(--ink); }
.demo-tab[aria-selected="true"] { color: var(--signal); border-color: var(--signal); box-shadow: inset 0 0 0 1px var(--signal); }
.demo-panel { display: none; border: 1px solid var(--rule); border-radius: 4px; background: var(--paper); padding: 28px; box-shadow: var(--shadow); }
.demo-panel.is-active { display: block; }
html.no-js .demo-panel { display: block; }
html.no-js .demo-panel + .demo-panel { margin-top: 24px; }
.demo-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; font: 500 10px/1.5 var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.demo-panel-live { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); }
.demo-panel-live::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--complete); box-shadow: 0 0 0 4px rgba(36,138,97,.2); animation: live-pulse 2s ease-in-out infinite; }
.demo-panel-tag { padding: 4px 10px; border-radius: 999px; border: 1px solid var(--rule); background: var(--paper-soft); color: var(--quiet); }
.demo-bubbles { display: grid; gap: 14px; margin-bottom: 20px; }
.demo-bubble-label { color: var(--faint); font: 500 9px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .06em; margin-bottom: -8px; }
.demo-bubble { max-width: 88%; padding: 13px 16px; border-radius: 14px; font-size: 15px; line-height: 1.5; border: 1px solid var(--rule); }
.demo-bubble.caller { justify-self: start; background: var(--paper-soft); color: var(--ink); }
.demo-bubble.agent { justify-self: end; background: var(--signal); color: #fff; border-color: var(--signal); }
.demo-panel-footer { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 16px; border-top: 1px solid var(--rule); font: 500 10px/1.4 var(--mono); color: var(--quiet); }
.demo-panel-footer span { display: inline-flex; align-items: center; gap: 6px; }
.demo-panel-footer span::before { content: "✓"; color: var(--complete); }

@keyframes live-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .72; transform: scale(1.15); }
}

@media (max-width: 1100px) {
  .section-head { grid-template-columns: 1fr; gap: 24px; align-items: start; }
}

@media (max-width: 480px) {
  .eyebrow { font-size: 9px; letter-spacing: .04em; }
  .eyebrow::before { width: 28px; }
  .demo-tab { width: 100%; }
  .demo-bubble { max-width: 95%; font-size: 14px; }
  .logo-list { grid-template-columns: 1fr; }
  .plan-card { padding: 24px; }
}