/* Lightweight UI overrides to ensure buttons are clearly visible */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 14px;
  text-decoration: none;
  visibility: visible;
  opacity: 1;
}
.btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}
.alert {
  font-size: 0.95rem;
}
.form-group label { font-weight: 600; }
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select {
  min-height: 38px;
}
/* Doubts page: solved comment highlight and solve CTA focus effect */
.comment-item.solved { border-left: 4px solid #28a745; box-shadow: 0 1px 0 rgba(40,167,69,0.08); }
.badge-solved-comment { display:inline-block; margin-left:8px; padding:2px 8px; border-radius:999px; background:#28a745; color:#fff; font-size: 12px; }
textarea.pulse { animation: pulse-border 1.2s ease-in-out; }
@keyframes pulse-border { 0%{ box-shadow: 0 0 0 0 rgba(37,99,235,0.4); } 100%{ box-shadow: 0 0 0 10px rgba(37,99,235,0); } }
/* Admin Quiz UI refresh */
.admin-shell { background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%); min-height: 100vh; }
.admin-sidebar { background:#0f172a; color:#e2e8f0; border-right:1px solid rgba(255,255,255,0.06); }
.admin-sidebar a { color:#cbd5e1; display:block; padding:10px 14px; border-radius:8px; }
.admin-sidebar a:hover { background: rgba(255,255,255,0.06); color:#fff; }
.admin-header { background:#111827; color:#fff; box-shadow: 0 2px 12px rgba(0,0,0,0.12); }
.admin-header .brand { font-weight:700; letter-spacing:0.4px; }

.panel { background:#fff; border:1px solid #e5e7eb; border-radius:12px; box-shadow: 0 8px 24px rgba(17,24,39,0.06); }
.panel h2 { font-size:1.15rem; margin:0 0 12px 0; }
.panel .panel-body { padding:16px; }

.form-control, .panel input[type="text"], .panel input[type="number"], .panel input[type="date"], .panel select, .panel textarea {
  border:1px solid #cbd5e1; border-radius:10px; padding:10px 12px; outline:none;
}
.form-control:focus, .panel input:focus, .panel select:focus, .panel textarea:focus { border-color:#2563eb; box-shadow:0 0 0 3px rgba(37,99,235,0.15); }

.btn-primary { background:#2563eb; color:#fff; border: none; border-radius:10px; }
.btn-primary:hover { background:#1e40af; }
.btn-secondary { background:#0ea5e9; color:#fff; border:none; border-radius:10px; }
.btn-danger { background:#ef4444; color:#fff; border:none; border-radius:10px; }

.pill { display:inline-block; padding:6px 12px; border-radius:999px; background: var(--card-bg); color: var(--text-color); font-weight:600; border:1px solid var(--border-color); }
.callout { background:#fef3c7; border:1px solid #f59e0b; color:#92400e; border-radius:12px; padding:10px 12px; }

/* Header actions button polishing */
.theme-toggle { border-radius:10px; border:1px solid var(--border-color); background: var(--white); color: var(--text-dark); box-shadow: 0 2px 6px rgba(0,0,0,0.06); }
.theme-toggle:hover { border-color: var(--border-color); box-shadow: 0 4px 12px rgba(0,0,0,0.09); }

/* Screen watermark class moved to CSS for better control */
.screen-watermark { user-select: none; }

/* Global header polishing */
.header { position: sticky; top: 0; z-index: 1000; background: var(--white); box-shadow: 0 6px 20px rgba(17,24,39,0.06); border-bottom: 1px solid var(--border-color); transition: background-color .2s ease, border-color .2s ease; }
.header .container { padding-top: 10px; padding-bottom: 10px; }
.nav-wrapper { display:flex; align-items:center; justify-content:space-between; gap:16px; }
.nav-menu ul { list-style:none; margin:0; padding:0; display:flex; align-items:center; gap:10px; }
.nav-menu > ul > li > a { display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:10px; color: var(--text-dark); }
.nav-menu > ul > li > a:hover, .nav-menu > ul > li > a.active { background: rgba(99,102,241,0.12); color: var(--primary-color); }
.dropdown-menu { border:1px solid var(--border-color); background: var(--white); box-shadow:0 10px 24px rgba(17,24,39,0.08); border-radius:12px; }
.mobile-menu-toggle { border:1px solid var(--border-color); background: var(--white); color: var(--text-dark); padding:8px 10px; border-radius:10px; box-shadow:0 2px 6px rgba(0,0,0,0.06); transition: border-color .2s ease, box-shadow .2s ease; }
.mobile-menu-toggle:hover { border-color: var(--border-color); box-shadow:0 4px 12px rgba(0,0,0,0.09); }
.notification-link { position:relative; }
.notification-badge { position:absolute; top:-4px; right:-6px; background:#ef4444; color:#fff; font-size:11px; padding:2px 6px; border-radius:999px; }

/* Dark mode specific header tweaks to ensure visibility */
[data-theme="dark"] .header { background: rgba(15,23,42,0.88); border-bottom-color: var(--border-color); }
[data-theme="dark"] .nav-menu > ul > li > a { color: var(--text-dark); }
[data-theme="dark"] .nav-menu > ul > li > a:hover, [data-theme="dark"] .nav-menu > ul > li > a.active { background: rgba(99,102,241,0.18); color: var(--primary-color); }
[data-theme="dark"] .dropdown-menu { background: var(--white); border-color: var(--border-color); box-shadow: 0 12px 28px rgba(0,0,0,0.35); }
[data-theme="dark"] .dropdown-menu a { color: var(--text-dark); }
[data-theme="dark"] .dropdown-menu a:hover { background: rgba(99,102,241,0.18); }
[data-theme="dark"] .mobile-menu-toggle { background: var(--white); color: var(--text-dark); border-color: var(--border-color); }
[data-theme="dark"] .theme-toggle { background: var(--white); color: var(--text-dark); border-color: var(--border-color); }

/* Card and badge tweaks for quiz UI */
.card { border:1px solid #e5e7eb; border-radius:12px; background:#fff; box-shadow: 0 8px 24px rgba(17,24,39,0.06); }
.card-header h2 { margin:0; }
.badge { display:inline-block; padding:6px 10px; border-radius:999px; border:1px solid #e5e7eb; background:#f8fafc; }

/* Doubts UI polishing */
.doubt-card { border:1px solid var(--border-color); border-radius:12px; background: var(--white); box-shadow: 0 10px 20px rgba(17,24,39,0.06); padding: 12px; margin-bottom: 14px; }
.doubt-card .meta { display:flex; align-items:center; gap:12px; }
.doubt-card .meta img { width:40px; height:40px; border-radius:50%; object-fit:cover; }
.doubt-card .title { font-weight:700; font-size:1.05rem; }
.doubt-card .content .rendered { line-height:1.6; }
.badge-solved { display:inline-flex; align-items:center; gap:6px; background:#22c55e; color:#fff; border-radius:999px; padding:4px 10px; font-size:12px; }
.badge-unsolved { display:inline-flex; align-items:center; gap:6px; background:#fde68a; color:#92400e; border-radius:999px; padding:4px 10px; font-size:12px; }

.solution-item { background: var(--white); }
.solution-item.solved { border-color: #22c55e; box-shadow: 0 6px 18px rgba(34,197,94,0.12); }
.solution-item .test-box, .solution-item .out-box { background: var(--white); }
.solution-comments-box { border-top: 1px dashed var(--border-color); padding-top: 8px; }
.solution-comments-box .box-header h4 { font-size:1rem; }
.solution-comments-box .comment-item { border:1px solid var(--border-color); border-radius:10px; background: var(--white); padding:10px; margin-top:8px; }
.solution-comments-box .comment-item .meta { display:flex; align-items:center; gap:10px; }
.solution-comments-box .comment-item .meta img { width:28px; height:28px; border-radius:50%; object-fit:cover; }

[data-theme="dark"] .doubt-card { background: var(--white); border-color: var(--border-color); box-shadow: 0 12px 28px rgba(0,0,0,0.35); }
[data-theme="dark"] .badge-unsolved { background:#fef3c7; color:#92400e; }
[data-theme="dark"] .solution-item { background: var(--white); border-color: var(--border-color); }
[data-theme="dark"] .solution-comments-box .comment-item { background: var(--white); border-color: var(--border-color); }

/* Home languages list view */
.languages-grid.list-view {
  grid-template-columns: 1fr;
  gap: 14px;
}
.language-card.list-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: start;
  gap: 8px 16px;
  padding: 16px 18px;
  text-align: left;
}
.language-card.list-item .language-icon {
  grid-column: 1;
  grid-row: 1 / span 3;
  font-size: 2.25rem;
  margin: 2px 0 0 0;
}
.language-card.list-item h3 {
  grid-column: 2;
  margin: 0;
  font-size: 1.15rem;
}
.language-card.list-item .question-count {
  grid-column: 2;
  margin: 0;
}
.language-card.list-item .language-desc {
  grid-column: 2;
  margin: 0;
  max-width: 72ch;
}
.language-card.list-item:hover {
  transform: translateY(-2px);
}
@media (max-width: 640px) {
  .language-card.list-item {
    grid-template-columns: 52px 1fr;
    padding: 14px 14px;
  }
  .language-card.list-item .language-icon {
    font-size: 2rem;
  }
}

/* Topics page */
body.topics-page .topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
body.topics-page .topic-card {
  display: block;
  padding: 18px 18px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  text-decoration: none;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(17,24,39,0.06);
  transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
  position: relative;
  overflow: hidden;
}
body.topics-page .topic-card::after {
  content: '\f061';
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: 14px;
  top: 14px;
  color: rgba(100,116,139,0.7);
  transform: translateX(6px);
  opacity: 0;
  transition: transform .2s ease, opacity .2s ease, color .2s ease;
}
body.topics-page .topic-card:hover {
  box-shadow: 0 18px 40px rgba(37,99,235,0.16);
  transform: translateY(-3px);
  border-color: rgba(37,99,235,0.35);
}
body.topics-page .topic-card:hover::after {
  opacity: 1;
  transform: translateX(0);
  color: var(--primary-color);
}
body.topics-page .topic-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
body.topics-page .topic-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37,99,235,0.10);
  color: var(--primary-color);
}
body.topics-page .topic-card h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
}
body.topics-page .topic-desc {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
}

body.topics-page .topics-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
body.topics-page .topics-search {
  position: relative;
  flex: 1 1 420px;
  max-width: 520px;
}
body.topics-page .topics-search i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(100,116,139,0.75);
}
body.topics-page .topics-search input {
  width: 100%;
  padding: 10px 12px 10px 38px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--white);
  outline: none;
}
body.topics-page .topics-search input:focus {
  border-color: rgba(37,99,235,0.65);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.14);
}

/* Questions list page */
body.questions-page .filter-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border-color);
}
body.questions-page .filter-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
body.questions-page .filter-bar label {
  font-weight: 700;
  color: var(--text-dark);
  margin: 0;
}
body.questions-page .filter-bar .form-control {
  min-width: 180px;
  border-radius: 10px;
}
body.questions-page .questions-search {
  position: relative;
  flex: 1 1 320px;
  max-width: 460px;
  margin-left: 10px;
}
body.questions-page .questions-search i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(100,116,139,0.75);
  pointer-events: none;
}
body.questions-page .questions-search input {
  width: 100%;
  padding-left: 38px;
}
body.questions-page .question-card {
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 18px;
  background: var(--white);
  margin-bottom: 16px;
  box-shadow: 0 10px 22px rgba(17,24,39,0.06);
  transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}
body.questions-page .question-card:hover {
  box-shadow: 0 18px 44px rgba(37,99,235,0.14);
  transform: translateY(-2px);
  border-color: rgba(37,99,235,0.30);
}
body.questions-page .question-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}
body.questions-page .question-meta {
  margin-top: 10px;
  color: var(--text-light);
  font-size: 0.92rem;
}
body.questions-page .question-description {
  margin-top: 12px;
  color: var(--text-dark);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
body.questions-page .question-actions {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--border-color);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
body.questions-page .question-actions .action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: rgba(15,23,42,0.02);
  color: var(--text-dark);
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
}
body.questions-page .question-actions .action-btn:hover {
  background: rgba(37,99,235,0.08);
  border-color: rgba(37,99,235,0.25);
  transform: translateY(-1px);
}
@media (max-width: 640px) {
  body.questions-page .question-card { padding: 14px; }
  body.questions-page .filter-bar .form-control { min-width: 160px; }
  body.questions-page .questions-search { margin-left: 0; max-width: none; }
}

/* Home languages section polish */
.languages-section {
  background: linear-gradient(180deg, rgba(99,102,241,0.06), rgba(99,102,241,0.00));
}
.languages-section .languages-toolbar .search-input {
  background: rgba(255,255,255,0.9);
  box-shadow: 0 10px 22px rgba(17,24,39,0.06);
}
.language-card:focus-visible,
body.topics-page .topic-card:focus-visible,
body.questions-page .question-actions .action-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.18);
}
@media (prefers-reduced-motion: reduce) {
  .language-card,
  body.topics-page .topic-card,
  body.questions-page .question-card {
    animation: none !important;
    transition: none !important;
  }
}