/* ============================================================
   BETTER FORMULAS — Shared Theme
   Palette: Dark Navy (primary), Cool Silver (secondary),
            Medium Green + Pale Spring Green (accent pair)
   Font: Inter (Google Fonts) — clean, clinical, professional
   ============================================================ */

:root {
  /* Brand colors — muted, unsaturated */
  --navy: #1c2e45;
  --navy-deep: #16232f;
  --silver: #cfd4d8;
  --silver-light: #eef0f2;
  --green-medium: #7fa38d;
  --green-pale: #d8e6dc;
  --white: #ffffff;
  --ink: #232830;          /* default readable near-black text */
  --ink-soft: #55606b;
  --soft-white: #f7f8f7;   /* text-on-dark */

  --bg: var(--white);
  --bg-alt: var(--silver-light);
  --text: var(--ink);
  --text-muted: var(--ink-soft);
  --border: #e2e5e8;

  --header-bg: var(--white);
  --nav-bg: var(--navy);
  --nav-text: var(--soft-white);

  --btn-bg: var(--navy);
  --btn-text: var(--soft-white);
  --btn-bg-hover: var(--navy-deep);

  --accent-bg: var(--green-pale);
  --accent-text: var(--ink);
  --tag-bg: var(--green-medium);
  --tag-text: var(--soft-white);

  --radius: 4px;
  --max-width: 1200px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;

  /* Accessibility scaling */
  --a11y-scale: 1;
  --base-font-size: 16px;
}

[data-theme="dark"] {
  --bg: #12181f;
  --bg-alt: #1a222b;
  --text: #eef0f2;
  --text-muted: #b7c0c8;
  --border: #2a333d;

  --header-bg: #0f151b;
  --nav-bg: #0c1218;
  --nav-text: var(--soft-white);

  --btn-bg: var(--green-medium);
  --btn-text: #0f151b;
  --btn-bg-hover: #93b39f;

  --accent-bg: #223028;
  --accent-text: var(--soft-white);
  --tag-bg: var(--green-medium);
  --tag-text: #0f151b;
}

/* Accessibility: large text mode */
[data-a11y="large"] {
  --base-font-size: 19px;
}
[data-a11y="xlarge"] {
  --base-font-size: 22px;
}
[data-a11y="high-contrast"] {
  --border: #000;
}

* { box-sizing: border-box; }

html {
  font-size: var(--base-font-size);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  margin: 0 0 0.5em;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; color: var(--text); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 3vw, 64px);
  width: 100%;
}

/* ---------- Skip link (a11y) ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--navy);
  color: var(--soft-white);
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
  left: 0;
}

/* ---------- Site Header ---------- */
.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 500;
}
.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 16px;
}
.site-header__left {
  display: flex;
  align-items: center;
  gap: 14px;
}
.hamburger {
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
}
.hamburger:hover, .hamburger:focus-visible {
  background: var(--bg-alt);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
[data-theme="dark"] .hamburger span { background: var(--soft-white); }

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-logo img {
  height: 58px;
  width: auto;
}
/* Header logo is black by default (sits on a white/light header bar).
   In dark mode the header background goes dark, so the logo needs to
   invert to white too — same technique already used for the side-nav
   logo (which sits on the always-navy menu background). */
[data-theme="dark"] .site-header .site-logo img {
  filter: brightness(0) invert(1);
}
.site-logo-fallback {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  color: var(--navy);
}
[data-theme="dark"] .site-logo-fallback { color: var(--soft-white); }

.site-header__right {
  display: flex;
  align-items: center;
  gap: 18px;
}
.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  padding: 6px;
  border-radius: var(--radius);
}
.icon-btn:hover, .icon-btn:focus-visible { background: var(--bg-alt); }

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box__form {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 280px;
  max-width: 70vw;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  padding: 8px;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.search-box.is-open .search-box__form {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.search-box__form input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.cart-count {
  background: var(--green-medium);
  color: var(--soft-white);
  font-size: 0.7rem;
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.cart-layout-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: start;
  margin-top: 20px;
}

.cart-line__info {
  flex: 1;
  color: inherit;
}

.cart-line__controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cart-line__price {
  width: 70px;
  text-align: right;
}

.account-layout-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
}

.account-orders-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 20px;
}

.account-orders-header {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 14px 18px;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.account-orders-empty {
  padding: 40px 18px;
  text-align: center;
  color: var(--text-muted);
}

.save5-hero {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 40px;
}
.save5-badge {
  display: inline-block;
  background: var(--green-medium);
  color: #0f151b;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.save5-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.save5-step {
  text-align: center;
  padding: 24px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.save5-step img {
  width: 100%;
  max-width: 120px;
  margin: 0 auto 16px;
  display: block;
}
.save5-step h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}
.save5-step p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0;
}
.save5-cta {
  text-align: center;
  max-width: 480px;
  margin: 44px auto 0;
}

/* ---------- Slide-out Nav (LEFT side) ---------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 21, 27, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 600;
}
.nav-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 320px;
  max-width: 85vw;
  background: var(--nav-bg);
  color: var(--nav-text);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 700;
  overflow-y: auto;
  padding: 20px 0 40px;
}
.side-nav.is-open {
  transform: translateX(0);
}

.side-nav__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 10px;
}
.side-nav__top .site-logo img { height: 48px; filter: brightness(0) invert(1); }
.side-nav__close {
  background: none;
  border: none;
  color: var(--soft-white);
  font-size: 1.4rem;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
}
.side-nav__close:hover { background: rgba(255,255,255,0.1); }

.side-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.side-nav__item > a, .side-nav__item > button.side-nav__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 15px 22px;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--soft-white);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
}
.side-nav__item > a:hover, .side-nav__toggle:hover {
  background: rgba(255,255,255,0.08);
}
.side-nav__submenu {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.side-nav__item.is-open .side-nav__submenu {
  max-height: 300px;
}
.side-nav__submenu a {
  display: block;
  padding: 10px 22px 10px 40px;
  font-size: 0.92rem;
  color: var(--silver);
}
.side-nav__submenu a:hover { color: var(--soft-white); background: rgba(255,255,255,0.06); }

.side-nav__caret {
  transition: transform 0.2s ease;
  font-size: 0.75rem;
}
.side-nav__item.is-open .side-nav__caret { transform: rotate(180deg); }

.side-nav__item--highlight {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.side-nav__item--highlight > a {
  display: flex;
  justify-content: center;
  margin: 4px 16px 12px;
  width: calc(100% - 32px);
  padding: 12px 20px;
  background: var(--green-medium);
  color: #0f151b;
  border-radius: 999px;
  font-weight: 700;
}
.side-nav__item--highlight > a:hover {
  background: var(--green-pale);
  color: var(--ink);
}

.side-nav__footer {
  padding: 18px 22px 0;
  margin-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.side-nav__footer a {
  display: block;
  padding: 8px 0;
  font-size: 0.85rem;
  color: var(--silver);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease;
}
.btn-primary {
  background: var(--btn-bg);
  color: var(--btn-text);
}
.btn-primary:hover { background: var(--btn-bg-hover); }
.btn-outline {
  background: transparent;
  border-color: var(--navy);
  color: var(--navy);
}
[data-theme="dark"] .btn-outline { border-color: var(--soft-white); color: var(--soft-white); }
.btn-disabled, .btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-full { width: 100%; }

/* ---------- Utility ---------- */
/* NOTE: use padding-top/padding-bottom only here, never the "padding" shorthand.
   These classes are often combined on the same element as .container (e.g.
   class="container section-tight"). The shorthand would reset padding-left/
   padding-right to 0 and silently override .container's horizontal padding,
   which is exactly the bug that caused content to sit flush against the
   browser edge at full width. Longhand keeps the two classes independent. */
.section { padding-top: 64px; padding-bottom: 64px; }
.section-tight { padding-top: 40px; padding-bottom: 40px; }
.section-alt { background: var(--bg-alt); }
.text-center { text-align: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--green-medium);
}
.tag-pill {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 999px;
}
.badge-mannequin {
  background: var(--silver);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: var(--soft-white);
  padding: 48px 0 24px;
  margin-top: 64px;
}
[data-theme="dark"] .site-footer { background: var(--navy-deep); }
.site-footer a { color: var(--silver); }
.site-footer a:hover { color: var(--soft-white); }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}
.footer-grid h4 { color: var(--soft-white); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 8px; font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 20px;
  font-size: 0.8rem;
  color: var(--silver);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
}

/* ---------- A11y bar ---------- */
.a11y-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
}
.a11y-bar .container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  padding-top: 6px;
  padding-bottom: 6px;
}
.a11y-bar button {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 10px;
  cursor: pointer;
  color: var(--text);
  font-size: 0.75rem;
}
.a11y-bar button[aria-pressed="true"] {
  background: var(--navy);
  color: var(--soft-white);
  border-color: var(--navy);
}
[data-theme="dark"] .a11y-bar button[aria-pressed="true"] {
  background: var(--green-medium);
  color: #0f151b;
}

/* ---------- Mannequin notice ---------- */
.mannequin-notice {
  background: var(--accent-bg);
  color: var(--accent-text);
  font-size: 0.85rem;
  text-align: center;
  padding: 10px 16px;
}

/* ---------- Tabs (product pages + library items) ---------- */
.tab-btn {
  padding: 14px 20px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 1rem;
}
.tab-btn[aria-selected="true"] {
  border-bottom-color: var(--navy);
  color: var(--text);
}
[data-theme="dark"] .tab-btn[aria-selected="true"] {
  border-bottom-color: var(--green-medium);
}

/* ---------- Quiz ---------- */
.quiz-progress {
  height: 6px;
  background: var(--bg-alt);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 28px;
}
.quiz-progress__bar {
  height: 100%;
  background: var(--green-medium);
  transition: width 0.3s ease;
}
.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 15px 18px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.98rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.quiz-option:hover, .quiz-option:focus-visible {
  border-color: var(--green-medium);
  background: var(--accent-bg);
}
.quiz-option.is-selected {
  border-color: var(--navy);
  background: var(--accent-bg);
  font-weight: 600;
}
.quiz-back-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  margin-bottom: 16px;
}
.quiz-back-link:hover { color: var(--text); }

.quiz-results h2 { margin-top: 0; }
.quiz-result-block {
  margin: 22px 0;
}
.quiz-result-heading {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text);
}
.quiz-pie-legend {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}
.quiz-pie-legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
}
.quiz-pie-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ---------- Library footnotes ---------- */
.footnote-link {
  color: var(--green-medium);
  font-weight: 700;
  text-decoration: none;
}
.footnote-link:hover, .footnote-link:focus-visible {
  text-decoration: underline;
}
.library-tabpanel li.is-highlighted {
  background: var(--accent-bg);
  border-radius: var(--radius);
  transition: background 0.3s ease;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  h1 { font-size: 1.75rem; }
  .footer-bottom { flex-direction: column; }
  .product-hero-grid,
  .cart-layout-grid,
  .account-layout-grid {
    grid-template-columns: 1fr;
  }

  .account-orders-header {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 8px;
  }
}
@media (max-width: 600px) {
  .site-header__bar { padding: 12px 16px; }
  .container { padding: 0 16px; }
}

@media (max-width: 560px) {
  .cart-line {
    flex-wrap: wrap;
    row-gap: 12px;
  }

  .cart-line__info {
    min-width: 0;
  }

  .cart-line__controls {
    margin-left: 110px;
  }

  .cart-line__price {
    margin-left: auto;
  }
}

/* ---------- Header responsive safeguards ---------- */
.site-header .site-logo img {
  min-width: 120px;
}

@media (max-width: 680px) {
  .site-header__bar {
    flex-wrap: wrap;
    row-gap: 10px;
  }

  .site-header__left {
    flex-shrink: 0;
  }

  .site-header__right {
    width: 100%;
    justify-content: flex-end;
  }

  .search-box {
    position: static;
  }

  .search-box__form {
    position: absolute;
    top: 100%;
    left: 16px;
    right: 16px;
    width: auto;
    max-width: none;
    margin-top: 8px;
  }
}

@media (max-width: 600px) {
  .site-header .site-logo img {
    height: 42px;
    min-width: 100px;
  }
}

@media (max-width: 400px) {
  .site-header .site-logo img {
    height: 36px;
    min-width: 86px;
  }
}