/* ===========================================================================
   Madeira Bookshop — styles
   Vanilla CSS · warm paper + bold Bitcoin-orange · mobile-first.
   =========================================================================== */

:root, [data-theme="light"] {
  --bg: #f6f1e2;
  --bg-elevated: #fffdf5;
  --bg-sunk: #ebe4cf;
  --text: #1f261d;
  --text-secondary: #5b6053;
  --text-dim: #8f9381;
  --accent: #d97f27;
  --accent-hover: #bd6611;
  --accent-soft: rgba(217, 127, 39, 0.13);
  --accent-ink: #fffdf5;
  --brand: #2f5638;
  --brand-hover: #24422b;
  --brand-ink: #f4efda;
  --border: rgba(31, 38, 29, 0.10);
  --border-strong: rgba(31, 38, 29, 0.20);
  --good: #2f8a52;
  --warn: #bd6612;
  --hero-1: #3a6446;
  --hero-2: #264a31;
  --hero-ink: #f4efda;
  --shadow-sm: 0 1px 2px rgba(31, 38, 29, 0.07);
  --shadow: 0 6px 20px rgba(31, 38, 29, 0.10);
  --shadow-lg: 0 18px 44px rgba(31, 38, 29, 0.17);
}

[data-theme="dark"] {
  --bg: #12140f;
  --bg-elevated: #1c1f16;
  --bg-sunk: #0c0d09;
  --text: #ece4d0;
  --text-secondary: #a39c87;
  --text-dim: #6f6c58;
  --accent: #f0902c;
  --accent-hover: #ffac48;
  --accent-soft: rgba(240, 144, 44, 0.16);
  --accent-ink: #18130a;
  --brand: #5f9069;
  --brand-hover: #75a87e;
  --brand-ink: #f4efda;
  --border: rgba(236, 228, 210, 0.10);
  --border-strong: rgba(236, 228, 210, 0.22);
  --good: #5cc585;
  --warn: #f0a64a;
  --hero-1: #335840;
  --hero-2: #1f3b29;
  --hero-ink: #f4efda;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.6);
}

:root {
  --font-serif: "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --wrap: 1240px;
  --radius: 10px;
  --radius-lg: 16px;
  --card-min: 158px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.3s ease, color 0.2s ease;
}
[data-theme="dark"] body { font-weight: 450; }

img { max-width: 100%; display: block; }
a { color: var(--accent); }
h1, h2, h3 { font-family: var(--font-serif); font-weight: 700; line-height: 1.15; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(16px, 4vw, 36px); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* --- header ---------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; min-height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand-mark {
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 9px;
  background: var(--accent); color: var(--accent-ink);
  font-family: var(--font-serif); font-size: 23px; font-weight: 700;
}
.brand-text { font-family: var(--font-serif); font-size: clamp(16px, 1rem + 1vw, 21px); font-weight: 700; }
.header-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn, .cart-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 13px;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--bg-elevated); color: var(--text);
  font: inherit; font-size: 15px; cursor: pointer;
  transition: border-color 0.2s ease, transform 0.1s ease;
}
.icon-btn { min-width: 44px; padding: 0 10px; }
.icon-btn:hover, .cart-button:hover { border-color: var(--accent); }
.cart-button:active { transform: scale(0.97); }
.cart-button { font-weight: 600; }
.cart-count {
  display: inline-grid; place-items: center;
  min-width: 22px; height: 22px; padding: 0 6px;
  border-radius: 11px; background: var(--accent); color: var(--accent-ink);
  font-size: 13px; font-weight: 700;
}
.theme-toggle svg { width: 20px; height: 20px; }
[data-theme="light"] .icon-sun, [data-theme="dark"] .icon-moon { display: none; }

.currency-toggle {
  display: inline-flex; border: 1px solid var(--border-strong);
  border-radius: var(--radius); overflow: hidden;
}
.currency-toggle button {
  min-height: 44px; padding: 0 12px;
  background: var(--bg-elevated); color: var(--text-secondary);
  border: 0; font: inherit; font-size: 14px; font-weight: 700; cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}
.currency-toggle button + button { border-left: 1px solid var(--border-strong); }
.currency-toggle button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

/* --- hero ------------------------------------------------------------------ */
.hero {
  background: linear-gradient(155deg, var(--hero-1), var(--hero-2));
  color: var(--hero-ink);
  padding: clamp(44px, 8vw, 96px) 0 clamp(38px, 6vw, 72px);
}
.hero-inner {
  display: flex; align-items: center; gap: clamp(28px, 5vw, 72px);
}
.hero-copy { flex: 1 1 auto; min-width: 0; max-width: 660px; }
.hero-art { flex: 0 0 auto; }
.hero-logo {
  display: block; width: clamp(158px, 23vw, 258px); height: auto;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.3));
}
.hero h1 {
  font-size: clamp(2.3rem, 1.4rem + 4vw, 4.1rem);
  line-height: 1.04; letter-spacing: -0.022em;
}
.hero-sub {
  margin-top: 16px; max-width: 46ch;
  font-size: clamp(1.02rem, 0.96rem + 0.5vw, 1.3rem);
  color: color-mix(in srgb, var(--hero-ink) 82%, transparent);
}
.hero-sub a { color: var(--hero-ink); text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.hero-facts span {
  padding: 7px 14px; border-radius: 999px;
  background: color-mix(in srgb, var(--hero-ink) 13%, transparent);
  font-size: 13px; font-weight: 700;
}
@media (max-width: 760px) {
  .hero-inner { flex-direction: column; align-items: flex-start; gap: 24px; }
  .hero-logo { width: clamp(124px, 34vw, 168px); }
}

/* --- controls -------------------------------------------------------------- */
.controls {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  padding-top: clamp(20px, 4vw, 32px); scroll-margin-top: 76px;
}
.search-input, .sort-select {
  min-height: 46px; padding: 0 14px;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--bg-elevated); color: var(--text); font: inherit;
}
.search-input { flex: 1 1 240px; }
.sort-select { cursor: pointer; }
.lang-filter { display: flex; flex-wrap: wrap; gap: 7px; flex: 1 1 100%; }
.chip {
  min-height: 38px; padding: 0 14px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: transparent; color: var(--text-secondary);
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all 0.16s ease;
}
.chip:hover { border-color: var(--accent); color: var(--text); }
.chip[aria-pressed="true"] {
  background: var(--accent); border-color: var(--accent);
  color: var(--accent-ink);
}
.result-count {
  color: var(--text-dim); font-size: 14px; font-weight: 600;
  max-width: var(--wrap); margin-inline: auto;
  padding: 16px clamp(16px, 4vw, 36px) 2px;
}

/* --- book grid ------------------------------------------------------------- */
.book-grid {
  display: grid; gap: clamp(14px, 2.4vw, 26px);
  grid-template-columns: repeat(auto-fill, minmax(min(var(--card-min), 100%), 1fr));
  padding-bottom: 56px;
}
.card {
  display: flex; flex-direction: column;
  background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.28s var(--ease), box-shadow 0.28s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}
.card-cover { position: relative; aspect-ratio: 2 / 3; background: var(--bg-sunk); overflow: hidden; }
.card-cover img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.card:hover .card-cover img { transform: scale(1.05); }
.card-badge {
  position: absolute; top: 9px; left: 9px;
  padding: 4px 9px; border-radius: 999px;
  font-size: 10.5px; font-weight: 800; letter-spacing: 0.05em;
  text-transform: uppercase; color: #fff;
}
.card-badge.is-new { background: var(--good); }
.card-badge.is-wear { background: var(--warn); }
.card-body { display: flex; flex-direction: column; gap: 3px; padding: 13px; flex: 1; }
.card-title { font-size: 15.5px; line-height: 1.25; }
.card-author { font-style: italic; color: var(--text-secondary); font-size: 13px; }
.card-meta {
  display: flex; flex-wrap: wrap; gap: 5px; margin-top: 6px;
  font-size: 11px; color: var(--text-dim);
}
.card-meta span { padding: 2px 8px; border: 1px solid var(--border); border-radius: 999px; }
.card-condition { font-size: 12.5px; color: var(--text-secondary); margin-top: 6px; }
.card-condition .wear-note { color: var(--warn); }
.card-foot {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 8px; margin-top: auto; padding-top: 12px;
}
.price-block { display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.price { font-family: var(--font-serif); font-size: 21px; font-weight: 700; color: var(--accent); }
.price-was { color: var(--text-dim); text-decoration: line-through; font-size: 13px; }
.stock-hint { font-size: 11.5px; color: var(--text-dim); white-space: nowrap; }
.stock-hint.low { color: var(--warn); font-weight: 700; }

/* --- buttons --------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 18px;
  border: 1px solid transparent; border-radius: var(--radius);
  font: inherit; font-size: 15px; font-weight: 700; cursor: pointer;
  text-decoration: none; text-align: center;
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.1s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-add { margin-top: 10px; font-size: 14px; }

/* --- cart drawer ----------------------------------------------------------- */
.drawer-backdrop {
  position: fixed; inset: 0; z-index: 90; border: 0;
  background: rgba(0, 0, 0, 0.5); opacity: 0;
  transition: opacity 0.3s ease;
}
.drawer-backdrop.show { opacity: 1; }
.cart-drawer {
  position: fixed; top: 0; right: 0; z-index: 100;
  width: min(420px, 100vw); height: 100dvh;
  display: flex; flex-direction: column;
  background: var(--bg-elevated); border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
}
.cart-drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px; border-bottom: 1px solid var(--border);
}
.drawer-head h2 { font-size: 20px; }
.drawer-close {
  width: 44px; height: 44px; border: 0; border-radius: var(--radius);
  background: var(--bg-sunk); color: var(--text);
  font-size: 24px; line-height: 1; cursor: pointer;
}
.drawer-body { flex: 1; overflow-y: auto; padding: 8px 20px; overscroll-behavior: contain; }
.drawer-empty { color: var(--text-dim); text-align: center; padding: 44px 0; }
.cart-line { display: flex; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.cart-line img {
  width: 54px; height: 81px; object-fit: cover;
  border-radius: 6px; background: var(--bg-sunk); flex-shrink: 0;
}
.cart-line-main { flex: 1; min-width: 0; }
.cart-line-title { font-family: var(--font-serif); font-size: 15px; line-height: 1.25; }
.cart-line-sub { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
.cart-line-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 8px; }
.qty-stepper { display: flex; align-items: center; gap: 2px; }
.qty-stepper button {
  width: 32px; height: 32px; border: 1px solid var(--border-strong);
  background: var(--bg); color: var(--text);
  border-radius: 7px; font-size: 17px; line-height: 1; cursor: pointer;
}
.qty-stepper button:disabled { opacity: 0.4; cursor: not-allowed; }
.qty-stepper span { min-width: 28px; text-align: center; font-variant-numeric: tabular-nums; }
.cart-line-price { font-weight: 700; font-variant-numeric: tabular-nums; }
.link-btn {
  background: none; border: 0; padding: 4px 0; cursor: pointer;
  color: var(--text-dim); font: inherit; font-size: 12px; text-decoration: underline;
}
.link-btn:hover { color: var(--warn); }
.drawer-foot { padding: 18px 20px; border-top: 1px solid var(--border); }
.subtotal-row { display: flex; justify-content: space-between; font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.ship-note { font-size: 12.5px; color: var(--text-dim); margin-bottom: 14px; }

/* --- footer ---------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border); background: var(--bg-elevated);
  padding: clamp(36px, 6vw, 60px) 0 32px; margin-top: 36px;
}
.footer-grid { display: grid; gap: 30px; grid-template-columns: 1fr; }
.site-footer h3 { font-size: 16px; margin-bottom: 9px; }
.site-footer p, .site-footer a { font-size: 14px; color: var(--text-secondary); }
.site-footer a { text-decoration: underline; text-underline-offset: 2px; }
.pay-row { display: flex; gap: 8px; margin-top: 14px; }
.pay-icon { width: 46px; height: 31px; border-radius: 4px; }
.contact-form { display: flex; flex-direction: column; gap: 8px; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 11px 12px;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--text); font: inherit; font-size: 14px;
}
.contact-form textarea { resize: vertical; min-height: 76px; }
.contact-status { font-size: 13px; font-weight: 600; }
.contact-status.ok { color: var(--good); }
.contact-status.err { color: var(--warn); }
.footer-trust {
  margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--border);
  font-size: 13px; color: var(--text-dim); text-align: center;
}
.footer-base { margin-top: 8px; font-size: 13px; color: var(--text-dim); text-align: center; }

/* --- misc ------------------------------------------------------------------ */
.empty-state { text-align: center; color: var(--text-dim); padding: 56px 0; }
.notice {
  background: var(--bg-sunk); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
  font-size: 14px; color: var(--text-secondary);
}

/* --- checkout -------------------------------------------------------------- */
.checkout { padding: clamp(20px, 4vw, 32px) clamp(16px, 4vw, 36px) 80px; }
.back-link { display: inline-block; margin-bottom: 12px; color: var(--text-secondary); text-decoration: none; font-size: 14px; }
.back-link:hover { color: var(--accent); }
.checkout h1 { font-size: clamp(1.8rem, 1.4rem + 2vw, 2.5rem); margin-bottom: 22px; }
.checkout-grid { display: grid; gap: 24px; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 880px) { .checkout-grid { grid-template-columns: 1.05fr 0.95fr; } }
.order-summary, .checkout-form {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: clamp(18px, 3vw, 24px);
}
.order-summary h2, .checkout-form h2 { font-size: 18px; margin-bottom: 12px; }
.checkout-form h2 { margin-top: 22px; }
.checkout-form h2:first-child { margin-top: 0; }
@media (min-width: 880px) { .order-summary { position: sticky; top: 84px; } }
.sum-item { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.sum-item img { width: 46px; height: 69px; object-fit: cover; border-radius: 5px; background: var(--bg-sunk); flex-shrink: 0; }
.sum-item-main { flex: 1; min-width: 0; }
.sum-item-title { font-family: var(--font-serif); font-size: 15px; line-height: 1.25; }
.sum-item-sub { font-size: 12px; color: var(--text-dim); margin-top: 3px; }
.sum-item-price { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.summary-line { display: flex; justify-content: space-between; padding: 9px 0; font-size: 15px; }
.summary-line small { color: var(--text-dim); font-size: 12px; }
.summary-line.total {
  border-top: 2px solid var(--border-strong); margin-top: 4px; padding-top: 13px;
  font-size: 20px; font-weight: 700; font-family: var(--font-serif);
}
.field { margin-bottom: 13px; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 5px; }
.field label .opt { font-weight: 400; color: var(--text-dim); }
.field input, .field select {
  width: 100%; min-height: 46px; padding: 0 12px;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--text); font: inherit;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ship-hint { font-size: 13px; color: var(--text-dim); margin: 2px 0 14px; }
.ship-hint.ok { color: var(--good); font-weight: 600; }
.ship-hint.err { color: var(--warn); font-weight: 600; }
.privacy-note { font-size: 12.5px; color: var(--text-dim); margin: 0 0 14px; }
.form-error {
  background: color-mix(in srgb, var(--warn) 14%, transparent);
  border: 1px solid var(--warn); color: var(--warn);
  border-radius: var(--radius); padding: 10px 12px; font-size: 14px; margin-bottom: 14px;
}
.pay-buttons { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.secure-note { font-size: 12px; color: var(--text-dim); text-align: center; margin-top: 12px; }
.method-options { display: grid; gap: 10px; margin-bottom: 18px; }
.method-option { cursor: pointer; display: block; }
.method-option input { position: absolute; opacity: 0; pointer-events: none; }
.method-card {
  display: block; height: 100%; padding: 13px 14px;
  border: 1.5px solid var(--border-strong); border-radius: var(--radius);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.method-option input:checked + .method-card { border-color: var(--accent); background: var(--accent-soft); }
.method-option input:focus-visible + .method-card { outline: 2px solid var(--accent); outline-offset: 2px; }
.method-title { display: block; font-weight: 700; font-size: 15px; }
.method-desc { display: block; font-size: 12.5px; color: var(--text-dim); margin-top: 3px; }
.pickup-when { margin-bottom: 16px; }
.pickup-date { font-family: var(--font-serif); font-weight: 700; font-size: 16px; }
.slot-grid { display: grid; gap: 8px; margin-top: 10px; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); }
.slot {
  min-height: 46px; border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--bg); color: var(--text); font: inherit; font-weight: 600; cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.slot:hover { border-color: var(--accent); }
.slot.selected { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

/* --- outcome pages (success / cancel) ------------------------------------- */
.outcome { max-width: 540px; margin: clamp(48px, 9vw, 96px) auto; padding: 0 20px; text-align: center; }
.outcome-icon {
  width: 72px; height: 72px; margin: 0 auto 22px;
  display: grid; place-items: center; border-radius: 50%; font-size: 34px;
}
.outcome-icon.ok { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }
.outcome-icon.warn { background: var(--accent-soft); color: var(--accent); }
.outcome h1 { font-size: clamp(1.6rem, 1.3rem + 1.6vw, 2.3rem); }
.outcome p { margin-top: 12px; color: var(--text-secondary); }
.outcome-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 26px; }
.outcome-ref {
  margin-top: 18px; display: inline-block;
  background: var(--bg-sunk); border-radius: var(--radius);
  padding: 8px 14px; font-size: 13px; color: var(--text-dim);
  font-family: ui-monospace, "SF Mono", monospace;
}

/* --- responsive ------------------------------------------------------------ */
@media (min-width: 600px) {
  :root { --card-min: 200px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 960px) {
  :root { --card-min: 224px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.2fr; gap: 44px; }
}
@media (max-width: 540px) {
  .cart-label { display: none; }
  .brand-text { display: none; }
  .header-actions { gap: 6px; }
  .header-inner { gap: 8px; }
  .brand-mark { width: 36px; height: 36px; }
  .currency-toggle button { min-height: 42px; padding: 0 9px; font-size: 13px; }
  .icon-btn { padding: 0 8px; min-width: 40px; }
  .cart-button { padding: 0 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}