@import url('https://api.fonts.coollabs.io/css2?family=EB+Garamond:ital,wght@0,400;0,500;1,400&family=Inter:wght@400;500;600&family=Lora:ital,wght@0,500;0,600;1,400&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Theme ────────────────────────────────────────────────────────── */

:root {
  /* Light (default) */
  --bg:             #f2f2f7;
  --surface:        #ffffff;
  --surface-2:      #f2f2f7;
  --border:         rgba(60, 60, 67, 0.14);
  --border-strong:  rgba(60, 60, 67, 0.28);
  --text:           #1c1c1e;
  --text-2:         #48484a;
  --text-3:         #8e8e93;
  --accent:         #1a6b52;
  --accent-hover:   #145540;
  --accent-fg:      #ffffff;
  --accent-subtle:  #e6f4ef;
  --shadow-card:    0 1px 3px rgba(0,0,0,0.07), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-card-hover: 0 2px 8px rgba(0,0,0,0.1), 0 8px 24px rgba(0,0,0,0.08);
  --radius-sm:      6px;
  --radius:         10px;
  --radius-lg:      14px;
}

/* Dark (explicit) */
[data-theme="dark"] {
  --bg:             #000000;
  --surface:        #1c1c1e;
  --surface-2:      #2c2c2e;
  --border:         rgba(255, 255, 255, 0.1);
  --border-strong:  rgba(255, 255, 255, 0.2);
  --text:           #f5f5f7;
  --text-2:         #aeaeb2;
  --text-3:         #636366;
  --accent:         #34c77b;
  --accent-hover:   #2db36e;
  --accent-fg:      #000000;
  --accent-subtle:  #0b2b1d;
  --shadow-card:    0 1px 3px rgba(0,0,0,0.4), 0 4px 12px rgba(0,0,0,0.3);
  --shadow-card-hover: 0 2px 8px rgba(0,0,0,0.5), 0 8px 24px rgba(0,0,0,0.4);
}

/* System dark — only fires when no explicit data-theme is set */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    --bg:             #000000;
    --surface:        #1c1c1e;
    --surface-2:      #2c2c2e;
    --border:         rgba(255, 255, 255, 0.1);
    --border-strong:  rgba(255, 255, 255, 0.2);
    --text:           #f5f5f7;
    --text-2:         #aeaeb2;
    --text-3:         #636366;
    --accent:         #34c77b;
    --accent-hover:   #2db36e;
    --accent-fg:      #000000;
    --accent-subtle:  #0b2b1d;
    --shadow-card:    0 1px 3px rgba(0,0,0,0.4), 0 4px 12px rgba(0,0,0,0.3);
    --shadow-card-hover: 0 2px 8px rgba(0,0,0,0.5), 0 8px 24px rgba(0,0,0,0.4);
  }
}


html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s, color 0.2s;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ───────────────────────────────────────────────────────────────── */

.site-wrapper {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ───────────────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.site-header .site-wrapper {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 52px;
}

.site-title {
  font-family: "Apple Garamond", Garamond, serif;
  font-weight: 400;
  font-style: italic;
  font-size: 1.2rem;
  color: var(--text);
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.site-title:hover { text-decoration: none; color: var(--accent); }

.site-nav {
  display: flex;
  gap: 6px;
  list-style: none;
  margin-left: auto;
}

.site-nav a {
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
}
.site-nav a:hover {
  color: var(--text);
  background: var(--surface-2);
  text-decoration: none;
}

/* ── Hero ─────────────────────────────────────────────────────────────────── */

.hero {
  padding: 56px 0 40px;
}

.hero-title {
  font-family: "Apple Garamond", Garamond, serif;
  font-size: 2.25rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.hero-subtitle {
  color: var(--text-2);
  font-size: 1rem;
  margin-bottom: 32px;
  max-width: 520px;
}

/* ── Search block ─────────────────────────────────────────────────────────── */

.search-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px 16px;
  box-shadow: var(--shadow-card);
}

.search-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.search-input {
  flex: 1;
  padding: 10px 14px;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.9375rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  appearance: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.search-input::placeholder { color: var(--text-3); }
.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
  background: var(--surface);
}

.search-btn {
  padding: 10px 20px;
  background: var(--accent);
  color: var(--accent-fg);
  font-family: "Inter", sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.search-btn:hover { background: var(--accent-hover); }

/* ── Tag filter dropdown ──────────────────────────────────────────────────── */

.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.filter-label {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.tag-select-wrap {
  position: relative;
  flex: 1;
}

.tag-select-wrap::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--text-3);
  pointer-events: none;
}

.tag-select {
  width: 100%;
  padding: 8px 32px 8px 12px;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.tag-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.tag-select option {
  background: var(--surface);
  color: var(--text);
}

/* ── Main content ─────────────────────────────────────────────────────────── */

.main-content { padding: 36px 0 72px; }

/* ── About strip ──────────────────────────────────────────────────────────── */

.about-strip {
  scroll-margin-top: 52px;
  background: var(--accent-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}
.about-strip p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.65;
}
.about-strip strong { color: var(--text); font-weight: 600; }

/* ── Section header ───────────────────────────────────────────────────────── */

.section-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 20px;
}

.section-title {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.result-count {
  font-size: 0.8125rem;
  color: var(--text-3);
  font-weight: 500;
}

/* ── Book grid ────────────────────────────────────────────────────────────── */

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(272px, 1fr));
  gap: 16px;
}

/* ── Book card ────────────────────────────────────────────────────────────── */

.book-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
}
.book-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.book-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  font-family: "Inter", sans-serif;
}

.book-meta {
  font-size: 0.8125rem;
  color: var(--text-3);
  font-weight: 400;
}

.book-desc {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
  margin-top: 2px;
}

.book-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 6px;
}

/* ── Inline tag badges ────────────────────────────────────────────────────── */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  font-size: 0.7rem;
  font-family: "Inter", sans-serif;
  font-weight: 500;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.7;
  letter-spacing: 0.01em;
  transition: opacity 0.12s;
}
.tag:hover { opacity: 0.75; text-decoration: none; }

/* Light-mode tag colours */
.tag[data-tag="alcohol"]    { background:#fde8e6; color:#9b2a22; border-color:#f5c3be; }
.tag[data-tag="drugs"]      { background:#f0e6fb; color:#6b2fa0; border-color:#d9b8f5; }
.tag[data-tag="smoking"]    { background:#e8eaf0; color:#2a3454; border-color:#bfc5d6; }
.tag[data-tag="gambling"]   { background:#e0f7f2; color:#0c6a58; border-color:#9fe3d6; }
.tag[data-tag="technology"] { background:#e3f0fc; color:#1254a4; border-color:#b0d0f5; }
.tag[data-tag="food"]       { background:#fff0e0; color:#9c4500; border-color:#f5c88a; }
.tag[data-tag="pornography"] { background:#fde8f4; color:#8b1a5e; border-color:#f0b8dc; }
.tag[data-tag="general"]    { background:#e6f7ec; color:#1a6b3c; border-color:#a2ddb8; }
.tag[data-tag="family"]     { background:#fff4e0; color:#96500a; border-color:#f5cfa0; }
.tag[data-tag="12-step"]    { background:#f0e6fb; color:#6b2fa0; border-color:#d9b8f5; }
.tag[data-tag="SMART"]      { background:#dff9f3; color:#0a6b56; border-color:#9aebd8; }
.tag[data-tag="CBT"]        { background:#e3f0fc; color:#1254a4; border-color:#b0d0f5; }
.tag[data-tag="science"]    { background:#e8eaf0; color:#2a3454; border-color:#bfc5d6; }
.tag[data-tag="research"]   { background:#f0f0f2; color:#5a5a6a; border-color:#d0d0da; }
.tag[data-tag="memoir"]     { background:#fde8e6; color:#9b2a22; border-color:#f5c3be; }
.tag[data-tag="self-help"]  { background:#e6f7ec; color:#1a6b3c; border-color:#a2ddb8; }
.tag[data-tag="classic"]    { background:#fef8e0; color:#7a6400; border-color:#f0e090; }

/* Dark-mode overrides for tag badges */
[data-theme="dark"] .tag[data-tag="alcohol"],
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="alcohol"] { background:#3a1210; color:#f5a09a; border-color:#6b2a24; } }
[data-theme="dark"] .tag[data-tag="alcohol"]    { background:#3a1210; color:#f5a09a; border-color:#6b2a24; }
[data-theme="dark"] .tag[data-tag="drugs"]      { background:#28103c; color:#c89cf0; border-color:#5a2a80; }
[data-theme="dark"] .tag[data-tag="smoking"]    { background:#1a1c28; color:#9aa0c8; border-color:#3a3e58; }
[data-theme="dark"] .tag[data-tag="pornography"] { background:#2e0a22; color:#f090cc; border-color:#6b1a4e; }
[data-theme="dark"] .tag[data-tag="gambling"]   { background:#0c2822; color:#60d8be; border-color:#1a5a4c; }
[data-theme="dark"] .tag[data-tag="technology"] { background:#0c1e38; color:#72b4f5; border-color:#1c3c6a; }
[data-theme="dark"] .tag[data-tag="food"]       { background:#2c1800; color:#f0a868; border-color:#5a3800; }
[data-theme="dark"] .tag[data-tag="general"]    { background:#0a2218; color:#5ce890; border-color:#1a4e30; }
[data-theme="dark"] .tag[data-tag="family"]     { background:#2c1c00; color:#f0b870; border-color:#5a3c08; }
[data-theme="dark"] .tag[data-tag="12-step"]    { background:#28103c; color:#c89cf0; border-color:#5a2a80; }
[data-theme="dark"] .tag[data-tag="SMART"]      { background:#082820; color:#5cddc8; border-color:#165846; }
[data-theme="dark"] .tag[data-tag="CBT"]        { background:#0c1e38; color:#72b4f5; border-color:#1c3c6a; }
[data-theme="dark"] .tag[data-tag="science"]    { background:#1a1c28; color:#9aa0c8; border-color:#3a3e58; }
[data-theme="dark"] .tag[data-tag="research"]   { background:#1e1e22; color:#9090a0; border-color:#3a3a46; }
[data-theme="dark"] .tag[data-tag="memoir"]     { background:#3a1210; color:#f5a09a; border-color:#6b2a24; }
[data-theme="dark"] .tag[data-tag="self-help"]  { background:#0a2218; color:#5ce890; border-color:#1a4e30; }
[data-theme="dark"] .tag[data-tag="classic"]    { background:#242008; color:#d4c04a; border-color:#4a4010; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="alcohol"]    { background:#3a1210; color:#f5a09a; border-color:#6b2a24; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="drugs"]      { background:#28103c; color:#c89cf0; border-color:#5a2a80; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="smoking"]    { background:#1a1c28; color:#9aa0c8; border-color:#3a3e58; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="pornography"] { background:#2e0a22; color:#f090cc; border-color:#6b1a4e; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="gambling"]   { background:#0c2822; color:#60d8be; border-color:#1a5a4c; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="technology"] { background:#0c1e38; color:#72b4f5; border-color:#1c3c6a; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="food"]       { background:#2c1800; color:#f0a868; border-color:#5a3800; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="general"]    { background:#0a2218; color:#5ce890; border-color:#1a4e30; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="family"]     { background:#2c1c00; color:#f0b870; border-color:#5a3c08; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="12-step"]    { background:#28103c; color:#c89cf0; border-color:#5a2a80; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="SMART"]      { background:#082820; color:#5cddc8; border-color:#165846; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="CBT"]        { background:#0c1e38; color:#72b4f5; border-color:#1c3c6a; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="science"]    { background:#1a1c28; color:#9aa0c8; border-color:#3a3e58; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="research"]   { background:#1e1e22; color:#9090a0; border-color:#3a3a46; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="memoir"]     { background:#3a1210; color:#f5a09a; border-color:#6b2a24; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="self-help"]  { background:#0a2218; color:#5ce890; border-color:#1a4e30; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .tag[data-tag="classic"]    { background:#242008; color:#d4c04a; border-color:#4a4010; }
}

/* ── Book link ────────────────────────────────────────────────────────────── */

.book-link {
  font-size: 0.8rem;
  font-weight: 500;
  margin-top: 4px;
}

/* ── No results ───────────────────────────────────────────────────────────── */

.no-results {
  grid-column: 1 / -1;
  padding: 32px 0;
  color: var(--text-3);
  font-size: 0.9rem;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  background: var(--surface);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-note {
  font-size: 0.8125rem;
  color: var(--text-3);
}

.crisis-line {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
}
.crisis-footer-link {
  font-weight: 400;
  color: var(--accent);
}

/* ── Theme toggle ─────────────────────────────────────────────────────────── */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  padding: 3px;
  gap: 2px;
}

.theme-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border: none;
  border-radius: 100px;
  background: transparent;
  color: var(--text-3);
  font-family: "Inter", sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.theme-btn svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}
.theme-btn:hover {
  color: var(--text-2);
  background: var(--border);
}
.theme-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}
[data-theme="dark"] .theme-btn.active,
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-btn.active {
    box-shadow: 0 1px 3px rgba(0,0,0,0.5);
  }
}

/* ── Crisis line modal ────────────────────────────────────────────────────── */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: modal-fade-in 0.18s ease;
}
.modal-backdrop[hidden] { display: none; }

@keyframes modal-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0,0,0,0.22);
  width: 100%;
  max-width: 520px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modal-slide-up 0.2s ease;
}

@keyframes modal-slide-up {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 0;
  flex-shrink: 0;
}

.modal-title {
  font-family: "Apple Garamond", "EB Garamond", Garamond, serif;
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--surface-2);
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-2);
  flex-shrink: 0;
  transition: background 0.15s;
}
.modal-close:hover { background: var(--border-strong); }
.modal-close svg { width: 14px; height: 14px; }

.modal-subtitle {
  font-size: 0.875rem;
  color: var(--text-3);
  padding: 6px 20px 14px;
  flex-shrink: 0;
}

.crisis-search {
  margin: 0 20px 12px;
  flex-shrink: 0;
  padding: 9px 12px;
  font-family: "Inter", sans-serif;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.crisis-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.crisis-search::placeholder { color: var(--text-3); }

.crisis-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
  padding: 0 12px 12px;
}

.crisis-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 10px;
  border-radius: var(--radius);
  border-bottom: 1px solid var(--border);
}
.crisis-item:last-child { border-bottom: none; }
.crisis-item:hover { background: var(--surface-2); }

.crisis-item-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.crisis-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.crisis-country {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 400;
  white-space: nowrap;
}

.crisis-type {
  font-size: 0.78rem;
  color: var(--text-3);
}

.crisis-item-bottom {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 2px;
}

.crisis-phone {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.crisis-url {
  font-size: 0.8rem;
  color: var(--text-2);
}

.crisis-no-results {
  padding: 24px 10px;
  color: var(--text-3);
  font-size: 0.875rem;
  font-style: italic;
}

.modal-footer-note {
  font-size: 0.75rem;
  color: #c0392b;
  padding: 10px 20px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  line-height: 1.5;
}

/* ── Utility ──────────────────────────────────────────────────────────────── */

.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

/* Nav links must never break mid-word */
.site-nav a { white-space: nowrap; }

@media (max-width: 640px) {
  .site-wrapper { padding: 0 16px; }

  /* Header: hide "Home" (logo already links home), tighten spacing */
  .site-nav li:first-child { display: none; }
  .site-title { font-size: 0.875rem; }
  .site-header .site-wrapper { gap: 10px; }
  .site-nav { gap: 2px; }
  .site-nav a { padding: 5px 8px; font-size: 0.8125rem; }

  .hero { padding: 28px 0 24px; }
  .hero-title { font-size: 1.6rem; }
  .hero-subtitle { font-size: 0.9rem; margin-bottom: 20px; }

  .search-block { padding: 14px 14px 12px; border-radius: var(--radius); }
  .search-row { gap: 6px; }
  .search-input { padding: 9px 12px; font-size: 0.9rem; border-radius: var(--radius-sm); }
  .search-btn { padding: 9px 14px; font-size: 0.875rem; border-radius: var(--radius-sm); }

  .book-grid { grid-template-columns: 1fr; gap: 12px; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .theme-toggle { align-self: center; }
}