/* Subject toggle on home */
.subject-toggle {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 16px 0 8px;
}

.subject-btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.75);
  font-family: var(--font-mono, monospace);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.subject-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.subject-btn.active {
  background: rgba(255, 255, 255, 0.95);
  color: #1a1714;
  border-color: transparent;
}
/* Social Studies Browse */
.ss-browse {
  max-width: 640px;
  margin: 0 auto;
}

.ss-browse-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.ss-browse-title {
  font-family: var(--font-serif, Georgia, serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--text, #1a1714);
}

.ss-browse-count {
  font-family: var(--font-mono, monospace);
  font-size: 12px;
  color: var(--text-secondary, #7a7470);
}

.ss-browse-search {
  margin-bottom: 16px;
}

.ss-browse-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 24px;
}

.ss-browse-card {
  background: var(--card-bg, #fff);
  border: 1px solid var(--card-border, #e4e0d8);
  border-radius: 16px;
  padding: 16px 18px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  animation: ssBrowseIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes ssBrowseIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.ss-browse-q-label,
.ss-browse-a-label {
  font-family: var(--font-mono, monospace);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary, #7a7470);
  margin-bottom: 4px;
}

.ss-browse-q {
  font-family: var(--font-serif, Georgia, serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text, #1a1714);
  margin-bottom: 12px;
}

.ss-browse-a-label {
  color: color-mix(in srgb, var(--blue, #1a4de8) 80%, #000);
}

.ss-browse-a {
  font-family: var(--font-mono, monospace);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--blue, #1a4de8);
  padding: 10px 12px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--blue, #1a4de8) 8%, transparent);
}

.ss-browse-empty {
  text-align: center;
  padding: 32px 16px;
  font-family: var(--font-mono, monospace);
  font-size: 13px;
  color: var(--text-secondary, #7a7470);
}

[data-mode="dark"] .ss-browse-card,
[data-mode="dark"] .ss-browse-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-mode="dark"] .ss-browse-a,
[data-mode="dark"] .ss-browse-a {
  background: color-mix(in srgb, var(--blue, #a78bfa) 18%, transparent);
  color: #c4b5fd;
}

/* Social Studies question text (Quiz) and long questions (Speedrun) */
.ss-question {
  font-family: var(--font-serif), Georgia, serif;
  font-size: clamp(17px, 4.2vw, 22px);
  font-weight: 600;
  line-height: 1.45;
  margin-top: 8px;
  text-align: left;
}
.sr-word.sr-word-long {
  font-size: clamp(16px, 4vw, 20px);
  line-height: 1.4;
}