/* ══════════════════════════════════════════════════════════════════════════
   tool-page.css — shared chrome for the free /tools/* pages (load calculator,
   zone landing pages, quote generator). Re-skins the legacy tool markup onto
   the plenum design system (Airflow palette, Sora, light + dark) so the tools
   match the landing page, hub, login and support. Load AFTER plenum.css.
   ══════════════════════════════════════════════════════════════════════════ */

/* Legacy token aliases — the tool markup + calc-widget.js still reference the
   old --text/--border/--card names; map them onto plenum tokens. */
:root {
  --text:    var(--ink);
  --text2:   var(--ink-2);
  --text3:   var(--ink-3);
  --border:  var(--hair);
  --border2: var(--hair-2);
  --card:    var(--panel);
  --card2:   var(--panel-2);
  --bg:      var(--paper);
  --bg2:     var(--panel);
  --danger:  var(--hot);
}

/* ── NAV ─────────────────────────────────────────────────────────────────── */
nav {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 22px; height: 62px; padding: 0 26px;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--hair);
}
.nav-logo { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: var(--t-lg); letter-spacing: var(--track-snug); color: var(--ink); }
.nav-logo-icon { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 4px; margin-left: 12px; }
.nav-links a { padding: 7px 10px; border-radius: 8px; font-size: var(--t-sm); font-weight: 500; color: var(--ink-2); transition: color var(--dur), background var(--dur); }
.nav-links a:hover { color: var(--ink); background: var(--panel-2); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* Buttons — reuse plenum's .btn geometry for the legacy bare classes. */
.nav-actions .btn-ghost, .nav-actions .btn-primary,
.mobile-nav-actions .btn-ghost, .mobile-nav-actions .btn-primary {
  height: 35px; padding: 0 15px; border-radius: 9px; border: 1px solid transparent;
  font-weight: 600; font-size: var(--t-sm); font-family: var(--font); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  transition: background var(--dur), color var(--dur), border-color var(--dur), box-shadow var(--dur);
}
.btn-ghost { background: var(--panel); color: var(--ink-2); border-color: var(--hair-2); }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-3); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--sh-1); }
.btn-primary:hover { background: var(--accent-2); box-shadow: var(--sh-2); }

.nav-hamburger { display: none; width: 38px; height: 38px; border-radius: 9px; border: 1px solid var(--hair-2); background: var(--panel); color: var(--ink-2); cursor: pointer; font-size: 18px; }
.mobile-nav { display: none; flex-direction: column; gap: 2px; padding: 12px 18px 18px; border-bottom: 1px solid var(--hair); background: var(--paper); }
.mobile-nav.open { display: flex; }
.mobile-nav-link { padding: 11px 8px; border-radius: 8px; font-size: var(--t-base); font-weight: 500; color: var(--ink-2); }
.mobile-nav-link:hover { background: var(--panel-2); color: var(--ink); }
.mobile-nav-actions { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.mobile-nav-actions .btn-ghost, .mobile-nav-actions .btn-primary { width: 100%; }
@media (max-width: 900px) {
  .nav-links, .nav-actions .btn-ghost, .nav-actions .btn-primary { display: none; }
  .nav-actions { margin-left: auto; }
  .nav-hamburger { display: grid; place-items: center; }
}

/* ── PAGE SHELL ──────────────────────────────────────────────────────────── */
.tool-page-wrap { max-width: 1100px; margin: 0 auto; padding: 72px 40px 80px; }
.tool-page-wrap h1 { font-size: clamp(30px, 4.4vw, 44px); font-weight: 700; letter-spacing: var(--track-tight); line-height: 1.08; margin-bottom: 16px; color: var(--ink); }
.gradient-text { color: var(--accent); }
.tool-intro, .tool-page-wrap .tool-intro { font-size: var(--t-md); color: var(--ink-2); max-width: 640px; line-height: 1.7; margin-bottom: 40px; }
.tool-intro strong { color: var(--ink); font-weight: 600; }

.section-tag { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: var(--t-micro); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-2);
  background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--panel)); border-radius: 99px; padding: 5px 12px; }

/* Zone landing extras */
.zone-badge { display: inline-flex; align-items: center; gap: 8px; padding: 5px 14px; border-radius: 99px; margin-bottom: 20px; border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--panel)); background: var(--accent-wash); font-size: var(--t-sm); font-weight: 700; color: var(--accent-2); letter-spacing: .03em; }
.back-link { display: inline-flex; align-items: center; gap: 6px; font-size: var(--t-sm); color: var(--ink-3); margin-bottom: 32px; transition: color var(--dur); }
.back-link:hover { color: var(--ink); }
.tool-blurb { max-width: 780px; margin-top: 48px; }
.tool-blurb h2 { font-size: var(--t-xl); font-weight: 600; letter-spacing: var(--track-snug); margin-bottom: 12px; color: var(--ink); }
.tool-blurb p { font-size: var(--t-sm); color: var(--ink-2); line-height: 1.75; }

/* ── EXPLAINER / TABLE / FAQ ─────────────────────────────────────────────── */
.tool-explain { max-width: 780px; margin: 64px auto 0; }
.tool-explain h2 { font-size: var(--t-2xl); font-weight: 600; letter-spacing: var(--track-tight); margin-bottom: 12px; color: var(--ink); }
.tool-explain h3 { font-size: var(--t-lg); font-weight: 600; letter-spacing: var(--track-snug); margin: 28px 0 8px; color: var(--ink); }
.tool-explain p { font-size: var(--t-base); color: var(--ink-2); line-height: 1.75; margin-bottom: 12px; }
.tool-explain strong { color: var(--ink); font-weight: 600; }

.zone-table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: var(--t-sm); }
.zone-table th { text-align: left; padding: 8px 12px; color: var(--ink-3); font-weight: 600; border-bottom: 1px solid var(--hair-2); }
.zone-table td { padding: 10px 12px; border-bottom: 1px solid var(--hair); color: var(--ink-2); }
.zone-table tr:last-child td { border-bottom: none; }
.zone-table td:last-child { color: var(--accent-2); font-weight: 600; }

.faq-section { max-width: 780px; margin: 64px auto 0; }
.faq-item { border-bottom: 1px solid var(--hair); padding: 20px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-q { font-size: var(--t-base); font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.faq-a { font-size: var(--t-sm); color: var(--ink-2); line-height: 1.7; }

.zone-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 24px; }
.zone-link-card { background: var(--panel); border: 1px solid var(--hair); border-radius: var(--r); padding: 14px 16px; display: block; box-shadow: var(--sh-1); transition: border-color var(--dur), transform var(--dur) var(--out), box-shadow var(--dur); }
.zone-link-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--panel)); transform: translateY(-2px); box-shadow: var(--sh-2); }
.zone-link-name { font-size: var(--t-sm); font-weight: 600; color: var(--ink); }
.zone-link-city { font-size: var(--t-xs); color: var(--ink-3); margin-top: 2px; }

.calc-footer-note { font-size: var(--t-sm); color: var(--ink-3); }
.calc-footer-link { color: var(--accent); font-weight: 600; }
.calc-footer-link:hover { text-decoration: underline; }

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
footer { border-top: 1px solid var(--hair); max-width: 1100px; margin: 64px auto 0; padding: 44px 40px 40px; }
.footer-logo { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: var(--t-md); color: var(--ink); }
.footer-logo .nav-logo-icon { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--accent); color: #fff; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 18px 0 20px; }
.footer-links a { font-size: var(--t-sm); color: var(--ink-2); }
.footer-links a:hover { color: var(--ink); }
.footer-copy { font-size: var(--t-xs); color: var(--ink-3); border-top: 1px solid var(--hair); padding-top: 18px; }

/* ── CALC WIDGET (calc-widget.js renders .cw-*) — plenum re-theme ─────────── */
.cw-container { text-align: left; margin-top: 8px; }
.cw-grid { display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 1px; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--hair); background: var(--hair); box-shadow: var(--sh-1); }
.cw-panel { background: var(--panel); padding: 22px 20px; display: flex; flex-direction: column; gap: 14px; }
.cw-result-panel { background: var(--panel-2); }
.cw-panel-head { display: flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 11px; font-weight: 600; color: var(--ink-3); text-transform: uppercase; letter-spacing: .07em; }
.cw-step-num { width: 22px; height: 22px; border-radius: 50%; background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--panel)); color: var(--accent-2); font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cw-zone-sel, .cw-room-name, .cw-room-sqm, .cw-email-input { background: var(--panel); border: 1px solid var(--hair-2); color: var(--ink); font-family: var(--font); outline: none; transition: border-color var(--dur), box-shadow var(--dur); }
.cw-zone-sel { width: 100%; padding: 9px 12px; border-radius: 8px; font-size: 13px; cursor: pointer; }
.cw-zone-sel:focus, .cw-room-name:focus, .cw-room-sqm:focus, .cw-email-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.cw-zone-note { font-size: 11px; color: var(--ink-3); line-height: 1.5; }
.cw-rooms-list { display: flex; flex-direction: column; gap: 8px; }
.cw-room-row { display: grid; grid-template-columns: 1fr 56px auto 28px; gap: 6px; align-items: center; }
.cw-room-name, .cw-room-sqm { padding: 7px 10px; border-radius: 7px; font-size: 13px; }
.cw-room-sqm { text-align: right; -moz-appearance: textfield; appearance: textfield; }
.cw-room-sqm::-webkit-outer-spin-button, .cw-room-sqm::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.cw-sqm-unit { font-size: 12px; color: var(--ink-3); }
.cw-room-del { background: none; border: none; color: var(--ink-3); font-size: 18px; cursor: pointer; padding: 2px 4px; border-radius: 5px; line-height: 1; font-family: var(--font); transition: color var(--dur), background var(--dur); }
.cw-room-del:hover { color: var(--hot); background: color-mix(in srgb, var(--hot) 12%, transparent); }
.cw-presets { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.cw-preset { padding: 4px 11px; font-size: 12px; font-weight: 500; border-radius: 20px; border: 1px solid var(--hair-2); color: var(--ink-2); background: none; cursor: pointer; font-family: var(--font); transition: color var(--dur), border-color var(--dur), background var(--dur); }
.cw-preset:hover { color: var(--accent-2); border-color: color-mix(in srgb, var(--accent) 40%, var(--panel)); background: var(--accent-wash); }
.cw-results { display: flex; flex-direction: column; gap: 12px; flex: 1; }
.cw-empty { font-size: 13px; color: var(--ink-3); line-height: 1.6; }
.cw-result-row { display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.cw-result-label { color: var(--ink-2); }
.cw-result-val { font-weight: 600; color: var(--ink); font-family: var(--mono); }
.cw-result-accent { color: var(--accent); font-size: 18px; font-weight: 700; font-family: var(--mono); }
.cw-result-divider { height: 1px; background: var(--hair); margin: 4px 0; }
.cw-unit-rec { background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--panel)); border-radius: 10px; padding: 14px 16px; }
.cw-unit-rec-label { font-family: var(--mono); font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; color: var(--accent-2); margin-bottom: 6px; }
.cw-unit-name { font-size: 15px; font-weight: 700; color: var(--ink); }
.cw-unit-model { font-size: 13px; color: var(--ink-2); margin: 2px 0 6px; }
.cw-unit-spec { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.cw-cta-group { display: flex; flex-direction: column; gap: 8px; margin-top: auto; }
.cw-btn-primary { display: block; text-align: center; padding: 10px 16px; background: var(--accent); color: #fff; border: none; border-radius: 9px; font-size: 13px; font-weight: 600; cursor: pointer; font-family: var(--font); transition: background var(--dur); text-decoration: none; }
.cw-btn-primary:hover { background: var(--accent-2); }
.cw-btn-ghost { display: block; text-align: center; padding: 9px 16px; background: none; color: var(--ink-2); border: 1px solid var(--hair-2); border-radius: 9px; font-size: 13px; font-weight: 500; cursor: pointer; font-family: var(--font); transition: color var(--dur), border-color var(--dur); }
.cw-btn-ghost:hover { color: var(--ink); border-color: var(--ink-3); }
.cw-email-row { display: flex; gap: 6px; align-items: center; }
.cw-email-input { flex: 1; padding: 8px 10px; border-radius: 7px; font-size: 12px; }
.cw-email-row .cw-btn-primary { padding: 8px 12px; font-size: 12px; white-space: nowrap; }
.cw-email-ok { font-size: 12px; color: var(--pos); font-weight: 500; }

/* ── QUOTE GENERATOR extras ──────────────────────────────────────────────── */
.steps-showcase { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin: 48px 0; }
.step-card { background: var(--panel); border: 1px solid var(--hair); border-radius: var(--r); padding: 18px 16px; text-align: center; box-shadow: var(--sh-1); }
.step-card-num { width: 28px; height: 28px; border-radius: 50%; background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--panel)); color: var(--accent-2); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; }
.step-card-title { font-size: var(--t-sm); font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.step-card-sub { font-size: var(--t-xs); color: var(--ink-3); line-height: 1.5; }

.feature-bullets { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 32px 0 48px; max-width: 680px; }
.feature-bullet { display: flex; align-items: flex-start; gap: 10px; }
.feature-bullet i { color: var(--pos); font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.feature-bullet-text { font-size: var(--t-base); color: var(--ink-2); line-height: 1.5; }
.feature-bullet-text strong { color: var(--ink); }

.cta-hero { background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--panel)); border-radius: var(--r-lg); padding: 40px; text-align: center; margin: 0 0 64px; box-shadow: var(--sh-1); }
.cta-hero h2 { font-size: var(--t-2xl); font-weight: 600; letter-spacing: var(--track-tight); margin-bottom: 8px; color: var(--ink); }
.cta-hero p { font-size: var(--t-md); color: var(--ink-2); margin-bottom: 28px; }
.cta-hero-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn-hero-primary { display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px; font-size: var(--t-md); font-weight: 600; border-radius: 10px; background: var(--accent); color: #fff; border: none; cursor: pointer; font-family: var(--font); transition: background var(--dur), transform var(--dur), box-shadow var(--dur); box-shadow: var(--sh-1); }
.btn-hero-primary:hover { background: var(--accent-2); transform: translateY(-1px); box-shadow: var(--sh-2); }
.btn-hero-ghost { display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px; font-size: var(--t-md); font-weight: 500; border-radius: 10px; background: var(--panel); color: var(--ink); border: 1px solid var(--hair-2); cursor: pointer; font-family: var(--font); transition: color var(--dur), border-color var(--dur); }
.btn-hero-ghost:hover { border-color: var(--ink-3); }

@media (max-width: 768px) {
  .tool-page-wrap { padding: 40px 20px 60px; }
  footer { padding: 40px 20px; }
  .zone-links { grid-template-columns: 1fr 1fr; }
  .steps-showcase { grid-template-columns: 1fr 1fr; }
  .feature-bullets { grid-template-columns: 1fr; }
  .cta-hero { padding: 28px 20px; }
  .btn-hero-primary, .btn-hero-ghost { width: 100%; max-width: 320px; justify-content: center; }
}
@media (max-width: 640px) {
  .cw-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .steps-showcase { grid-template-columns: 1fr; }
}