/* ECS v2.0 — Base Component Styles
 * Depends on tokens.css. READ-ONLY in Phase 2.
 * Page-specific CSS lives in per-agent partials (home-*, service-detail-*, savings-*, about-*, contact-*, chat-*).
 */

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--fg-default);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variation-settings: "opsz" 32;
}
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--fg-brand); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--c-emerald-900); }
hr { border: 0; border-top: var(--rule-hairline); margin: var(--space-7) 0; }

h1 em, h2 em, h3 em,
h1 i, h2 i, h3 i,
.italic-accent {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--c-emerald-700);
  font-weight: inherit;
}

/* ---------- Typography classes ---------- */
.display, h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--c-ink-900);
  margin: 0 0 var(--space-5);
}
h1 { font-size: clamp(var(--fs-2xl), 5vw, var(--fs-4xl)); }
h2 { font-size: clamp(var(--fs-xl), 3.5vw, var(--fs-3xl)); }
h3 { font-size: clamp(var(--fs-lg), 2vw, var(--fs-xl)); }
p  { margin: 0 0 var(--space-4); max-width: 65ch; }
.lede { font-size: var(--fs-md); line-height: var(--lh-relaxed); color: var(--c-ink-700); }
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--fg-brand);
  margin: 0 0 var(--space-3);
}
.section--emphasis .eyebrow,
.section--emphasis-soft .eyebrow {
  color: var(--c-emerald-100);
}
.section--emphasis h1 em,
.section--emphasis h2 em,
.section--emphasis h3 em,
.section--emphasis .italic-accent {
  color: var(--c-emerald-100);
}
.caption { font-size: var(--fs-sm); color: var(--fg-muted); }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gutter); }
.container--narrow { max-width: var(--container-narrow); }
.container--wide   { max-width: var(--container-wide); }
.section { padding: var(--space-9) 0; }
.section--alt { background: var(--bg-alt); }
.section--emphasis { background: var(--bg-emphasis); color: var(--fg-on-emphasis); }
.section--emphasis h1,
.section--emphasis h2,
.section--emphasis h3 { color: var(--fg-on-emphasis); }
.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }
.grid { display: grid; gap: var(--space-6); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) {
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
}

/* ---------- 12-column grid primitive ----
 * Canonical layout grid. Compose any section with .grid-12 on the
 * container and .col-span-N (or .col-start-N) on children. Collapses
 * to a single column at --bp-sm.
 *
 * Usage:
 *   <div class="container">
 *     <div class="grid-12">
 *       <div class="col-span-4">…</div>
 *       <div class="col-span-8">…</div>
 *     </div>
 *   </div>
 *
 * Precise placement:
 *   <div class="col-start-3 col-span-8">…</div>
 * --------------------------------------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--grid-gap);
  row-gap: var(--grid-row-gap);
}

.col-span-1  { grid-column: span 1; }
.col-span-2  { grid-column: span 2; }
.col-span-3  { grid-column: span 3; }
.col-span-4  { grid-column: span 4; }
.col-span-5  { grid-column: span 5; }
.col-span-6  { grid-column: span 6; }
.col-span-7  { grid-column: span 7; }
.col-span-8  { grid-column: span 8; }
.col-span-9  { grid-column: span 9; }
.col-span-10 { grid-column: span 10; }
.col-span-11 { grid-column: span 11; }
.col-span-12 { grid-column: span 12; }

.col-start-1  { grid-column-start: 1; }
.col-start-2  { grid-column-start: 2; }
.col-start-3  { grid-column-start: 3; }
.col-start-4  { grid-column-start: 4; }
.col-start-5  { grid-column-start: 5; }
.col-start-6  { grid-column-start: 6; }
.col-start-7  { grid-column-start: 7; }
.col-start-8  { grid-column-start: 8; }
.col-start-9  { grid-column-start: 9; }
.col-start-10 { grid-column-start: 10; }
.col-start-11 { grid-column-start: 11; }
.col-start-12 { grid-column-start: 12; }

/* Tablet (≤ --bp-md 860px): collapse to 6 cols, span clamps */
@media (max-width: 860px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-span-7, .col-span-8, .col-span-9,
  .col-span-10, .col-span-11, .col-span-12 { grid-column: span 6; }
  .col-span-4, .col-span-5 { grid-column: span 6; }
  /* offsets disabled when grid collapses */
  [class*="col-start-"] { grid-column-start: auto; }
}

/* Phone (≤ --bp-sm 640px): single column */
@media (max-width: 640px) {
  .grid-12 { grid-template-columns: 1fr; }
  [class*="col-span-"] { grid-column: span 1; }
}

/* ---------- Grid overlay (debug) ----
 * Add ?grid to URL (or press "g") to drop a 12-col overlay.
 * Tracks the .container width + gutters so the stripes line up
 * with where real content sits, not edge-to-edge.
 * ----------------------------------- */
body.grid-overlay::before {
  content: "";
  position: fixed;
  top: 0; bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100% - 2 * var(--gutter), var(--container-max));
  pointer-events: none;
  z-index: 9999;
  background:
    repeating-linear-gradient(
      to right,
      rgba(255, 0, 80, 0.12) 0,
      rgba(255, 0, 80, 0.12) calc((100% - 11 * var(--grid-gap)) / 12),
      transparent calc((100% - 11 * var(--grid-gap)) / 12),
      transparent calc((100% - 11 * var(--grid-gap)) / 12 + var(--grid-gap))
    );
}
body.grid-overlay::after {
  content: "12-col";
  position: fixed;
  top: 8px; left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 10000;
  padding: 0.2rem 0.6rem;
  background: rgba(28,28,26,0.85);
  color: #fbf8f3;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  border-radius: var(--radius-pill);
}
@media (max-width: 860px) {
  body.grid-overlay::before {
    background:
      repeating-linear-gradient(
        to right,
        rgba(255, 0, 80, 0.12) 0,
        rgba(255, 0, 80, 0.12) calc((100% - 5 * var(--grid-gap)) / 6),
        transparent calc((100% - 5 * var(--grid-gap)) / 6),
        transparent calc((100% - 5 * var(--grid-gap)) / 6 + var(--grid-gap))
      );
  }
  body.grid-overlay::after { content: "6-col"; }
}
@media (max-width: 640px) {
  body.grid-overlay::before { background: rgba(255, 0, 80, 0.08); }
  body.grid-overlay::after { content: "1-col"; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--c-emerald-700);
  color: var(--fg-on-emphasis);
}
.btn--primary:hover { background: var(--c-emerald-900); color: var(--fg-on-emphasis); }

.btn--ghost {
  background: transparent;
  color: var(--fg-brand);
  border-color: var(--c-emerald-300);
}
.btn--ghost:hover { background: var(--bg-emphasis-soft); }

.btn--inverse {
  background: var(--c-cream-50);
  color: var(--c-emerald-900);
}
.btn--inverse:hover { background: var(--c-white); }

.btn--sm { padding: 0.5rem 1rem; font-size: var(--fs-sm); }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card__media { aspect-ratio: 4 / 3; background: var(--c-emerald-100); overflow: hidden; }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: var(--space-5) var(--space-5) var(--space-6); }
.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  margin: 0 0 var(--space-2);
  color: var(--c-ink-900);
}
.card__desc { font-size: var(--fs-base); color: var(--c-ink-700); margin: 0; }
.card__cta { margin-top: var(--space-4); font-size: var(--fs-sm); font-weight: 600; }

/* Rebate card variant (Savings page) */
.card--rebate { padding: var(--space-6); background: var(--c-cream-100); border-color: var(--border-soft); }
.card--rebate .card__amount {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  color: var(--c-emerald-700);
  line-height: 1;
  margin: 0 0 var(--space-3);
}

/* ---------- Hero (editorial) ---------- */
.hero {
  position: relative;
  min-height: 78svh;  /* svh: stable across iOS Safari URL-bar collapse */
  display: flex;
  align-items: flex-end;
  padding: var(--space-8) 0 var(--space-9);
  color: var(--fg-on-emphasis);
  overflow: hidden;
  background: var(--c-emerald-900);
}
.hero__media {
  position: absolute; inset: 0; z-index: 0;
}
.hero__media img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.85;
}
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(28,28,26,0.15) 0%, rgba(28,28,26,0.55) 100%);
}
.hero__content { position: relative; z-index: 1; max-width: 760px; }
.hero__eyebrow { color: var(--c-emerald-300); }
.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.25rem, 6.5vw, var(--fs-4xl));
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--fg-on-emphasis);
  margin: 0 0 var(--space-5);
}
.hero__sub {
  font-size: var(--fs-md);
  line-height: var(--lh-relaxed);
  color: var(--c-cream-100);
  margin: 0 0 var(--space-6);
  max-width: 56ch;
}
.hero--compact { min-height: 48svh; }

/* Site Header — moved to /nav.css (loaded after components.css on every page). */

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-emerald-900);
  color: var(--c-cream-100);
  padding: var(--space-9) 0 var(--space-6);
  margin-top: var(--space-9);
}
.site-footer a { color: var(--c-cream-100); }
.site-footer a:hover { color: var(--c-white); }
/* Footer rides the 12-col grid: brand col 6, three link cols 2 each. */
.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--grid-gap);
  row-gap: var(--grid-row-gap);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.site-footer__grid > .site-footer__col:nth-child(1) { grid-column: span 6; }
.site-footer__grid > .site-footer__col:nth-child(n+2) { grid-column: span 2; }
.site-footer__brand { font-family: var(--font-display); font-size: var(--fs-xl); color: var(--c-cream-50); margin: 0 0 var(--space-3); }
.site-footer__col h4 {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--c-emerald-300);
  margin: 0 0 var(--space-4);
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-2); }
.site-footer__col a { text-decoration: none; font-size: var(--fs-sm); }
.site-footer__bottom {
  max-width: var(--container-max);
  margin: var(--space-7) auto 0;
  padding: var(--space-5) var(--gutter) 0;
  border-top: 1px solid rgba(218, 227, 220, 0.2);
  display: flex; justify-content: space-between; align-items: center;
  font-size: var(--fs-xs);
  color: var(--c-emerald-300);
}
.site-footer__credit {
  font-family: var(--font-mono);
  color: rgba(218, 227, 220, 0.5);
  font-size: 0.7rem;
}
@media (max-width: 860px) {
  /* tablet: brand full row, links split 2+2+2 across 6-col grid */
  .site-footer__grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .site-footer__grid > .site-footer__col:nth-child(1) { grid-column: span 6; }
  .site-footer__grid > .site-footer__col:nth-child(n+2) { grid-column: span 2; }
  .site-footer__bottom { flex-direction: column; gap: var(--space-3); }
}
@media (max-width: 640px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__grid > .site-footer__col { grid-column: span 1 !important; }
}

/* ---------- Trust strip ---------- */
.trust-strip {
  background: var(--bg-alt);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: var(--space-7) 0;
}
.trust-strip__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.trust-strip__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  position: relative;
}
.trust-strip__item + .trust-strip__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12%;
  bottom: 12%;
  width: 1px;
  background: var(--border-soft);
}
.trust-strip__marks {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 96px;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  min-height: 48px;
}
.trust-strip__marks--pair { grid-auto-columns: auto 96px; }
.trust-strip__logo {
  width: 100%;
  height: 44px;
  object-fit: contain;
  opacity: 0.9;
}
.trust-strip__caption {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.45;
  color: var(--c-ink-700);
  max-width: 32ch;
}
.trust-strip__stat {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  color: var(--c-emerald-700);
  font-family: var(--font-display);
}
.trust-strip__stat-label {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  font-style: italic;
}
.trust-strip__stat-number {
  font-size: 2.5rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
}
.trust-strip__wordmark {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--c-ink-900);
  white-space: nowrap;
}

/* ---------- Rating line (typographic — no third-party badges per STYLE_RUBRIC) ---------- */
.rating-line {
  margin-top: var(--space-5);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--c-ink-500);
  white-space: nowrap;
}
.rating-line__stars {
  color: var(--c-emerald-700);
  letter-spacing: 0.18em;
  margin-right: var(--space-2);
}

@media (max-width: 768px) {
  .rating-line {
    white-space: normal;
  }
  .trust-strip__inner {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .trust-strip__item {
    padding: var(--space-5) 0 0;
  }
  .trust-strip__item + .trust-strip__item::before {
    left: 15%;
    right: 15%;
    top: 0;
    bottom: auto;
    width: auto;
    height: 1px;
  }
}

/* ---------- Form fields ---------- */
.field { display: grid; gap: var(--space-2); margin-bottom: var(--space-4); }
.field label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--c-ink-700);
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--c-white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--c-emerald-500);
  box-shadow: 0 0 0 3px rgba(74, 122, 99, 0.15);
}
.field textarea { min-height: 7rem; resize: vertical; }

/* ---------- Anchor section (long-scroll home-improvements) ---------- */
.anchor-section {
  scroll-margin-top: 80px;  /* offset sticky header on anchor jumps */
  padding: var(--space-9) 0;
  border-top: 1px solid var(--border-soft);
}
.anchor-section:first-of-type { border-top: 0; }
.anchor-section__header { margin-bottom: var(--space-7); }

/* ---------- Pull quote ---------- */
.pull-quote {
  font-family: var(--font-display);
  font-size: clamp(var(--fs-lg), 2.5vw, var(--fs-2xl));
  font-weight: 400;
  font-style: italic;
  line-height: var(--lh-snug);
  color: var(--c-ink-900);
  max-width: 60ch;
  margin: 0;
}
.pull-quote__cite {
  display: block;
  margin-top: var(--space-4);
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ---------- Chat bubble shells (Phase 2 Agent 4 owns interactivity) ---------- */
.chat {
  background: var(--c-white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 480px;
  box-shadow: var(--shadow-sm);
}
.chat__header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-soft);
  display: flex; align-items: center; justify-content: space-between;
}
.chat__title { font-family: var(--font-display); font-size: var(--fs-md); margin: 0; }
.chat__transcript {
  flex: 1; overflow-y: auto;
  padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-4);
}
.bubble {
  max-width: 80%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}
.bubble--bot {
  align-self: flex-start;
  background: var(--bg-emphasis-soft);
  color: var(--c-ink-900);
  border-bottom-left-radius: var(--radius-xs);
}
.bubble--user {
  align-self: flex-end;
  background: var(--c-emerald-700);
  color: var(--fg-on-emphasis);
  border-bottom-right-radius: var(--radius-xs);
}
.bubble--helper {
  align-self: center;
  background: var(--c-cream-100);
  color: var(--c-ink-500);
  font-size: var(--fs-xs);
  font-style: italic;
}
.chip-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  padding: 0.5rem 1rem;
  border: 1px solid var(--c-emerald-300);
  background: var(--c-white);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-emerald-700);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}
.chip:hover { background: var(--bg-emphasis-soft); }
.chat__composer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-soft);
  display: flex; gap: var(--space-2);
}
.chat__composer input {
  flex: 1; border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  padding: 0.65rem 1rem; font-size: var(--fs-sm);
}

/* Demo-mode pill — visible at all times, sits above the chat */
.demo-pill {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 0.35rem 0.75rem;
  background: var(--c-sand-400);
  color: var(--c-ink-900);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.demo-pill::before {
  content: ""; width: 6px; height: 6px;
  border-radius: 50%; background: var(--c-emerald-700);
}

/* ---------- Utility ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ---------- Motion (Phase 3): scroll-reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.is-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---------- Mobile breakpoints (Phase 3, ≤768px) ---------- */
@media (max-width: 768px) {
  .container { padding: 0 var(--space-5); }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  /* Long-scroll sub-nav: horizontally scrollable with snap */
  .subnav__inner {
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .subnav a { scroll-snap-align: start; padding-right: var(--space-2); }
  /* Hero scale */
  .hero { min-height: 60svh; padding: var(--space-6) 0 var(--space-7); }
  .hero__title { font-size: clamp(1.75rem, 8vw, 2.5rem); }
}