/* ============================================================
   components.css — Global reusable UI component library
   Mock Test Mitra™  (v1 — Premium)

   Depends on main.css design tokens.
   Load order: main.css → components.css → page-specific.css

   Contents:
   1.  Buttons
   2.  Badge / Tag system
   3.  Form elements
   4.  Alert / Info boxes
   5.  Empty states
   6.  Loading skeleton + Spinner
   7.  Avatar
   8.  Divider
   9.  Tooltip (CSS-only)
   10. Modal base
   11. Utility chips (filter-chips shared layer)
   ============================================================ */

/* ── 1. Buttons ───────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: 'Poppins', inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
  -webkit-font-smoothing: antialiased;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.42;
  cursor: not-allowed;
  pointer-events: none;
}

.btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Sizes */
.btn-xs  { padding: 4px 10px; font-size: var(--fs-xs); gap: 4px; }
.btn-sm  { padding: 6px 13px; font-size: var(--fs-sm); }
.btn-lg  { padding: 11px 22px; font-size: var(--fs-md); }
.btn-xl  { padding: 13px 28px; font-size: var(--fs-md); border-radius: var(--radius-md); }
.btn-block { width: 100%; }

/* Primary */
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover, #1d4ed8);
  border-color: var(--primary-hover, #1d4ed8);
}
[data-theme="dark"] .btn-primary:hover:not(:disabled) { opacity: 0.88; }

/* Secondary */
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text);
  border-color: var(--card-border);
}
.btn-secondary:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-surface);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-tertiary);
  color: var(--text);
}

/* Outline */
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover:not(:disabled) {
  background: var(--primary-surface);
}

/* Danger */
.btn-danger {
  background: var(--clr-danger, #dc2626);
  color: #fff;
  border-color: var(--clr-danger, #dc2626);
}
.btn-danger:hover:not(:disabled) { opacity: 0.88; }

/* Success */
.btn-success {
  background: var(--clr-success, #16a34a);
  color: #fff;
  border-color: var(--clr-success, #16a34a);
}
.btn-success:hover:not(:disabled) { opacity: 0.88; }

/* Icon-only button */
.btn-icon {
  padding: 7px;
  border-radius: var(--radius-sm);
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}
.btn-icon:hover:not(:disabled) { background: var(--bg-tertiary); color: var(--text); }
.btn-icon svg { width: 16px; height: 16px; }

/* Button group */
.btn-group {
  display: inline-flex;
  gap: 0;
}
.btn-group .btn { border-radius: 0; }
.btn-group .btn:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.btn-group .btn:last-child  { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.btn-group .btn + .btn { margin-left: -1px; }


/* ── 2. Badge / Tag system ────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
}

.badge-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* Colour variants */
.badge-primary { background: var(--primary-surface); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 20%, transparent); }
.badge-green   { background: var(--badge-completed-bg); color: var(--badge-completed); border-color: color-mix(in srgb, var(--badge-completed) 20%, transparent); }
.badge-amber   { background: rgba(217,119,6,0.10); color: #b45309; border-color: rgba(217,119,6,0.22); }
.badge-red     { background: rgba(220,38,38,0.08); color: #b91c1c; border-color: rgba(220,38,38,0.20); }
.badge-blue    { background: rgba(59,130,246,0.10); color: #1d4ed8; border-color: rgba(59,130,246,0.22); }
.badge-purple  { background: rgba(124,58,237,0.10); color: #6d28d9; border-color: rgba(124,58,237,0.22); }

[data-theme="dark"] .badge-amber  { background: rgba(251,191,36,0.10); color: #fbbf24; }
[data-theme="dark"] .badge-red    { background: rgba(248,113,113,0.10); color: #f87171; }
[data-theme="dark"] .badge-blue   { background: rgba(96,165,250,0.10); color: #60a5fa; }
[data-theme="dark"] .badge-purple { background: rgba(167,139,250,0.10); color: #a78bfa; }

/* Count badge (pill with number) */
.badge-count {
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
}

/* Tag (slightly larger than badge, rectangular) */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: 600;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
}
.tag-primary { background: var(--primary-surface); color: var(--primary); }
.tag-success { background: var(--badge-completed-bg); color: var(--badge-completed); }
.tag-warning { background: rgba(217,119,6,0.08); color: #b45309; }
.tag-danger  { background: rgba(220,38,38,0.08); color: #b91c1c; }

[data-theme="dark"] .tag-warning { color: #fbbf24; }
[data-theme="dark"] .tag-danger  { color: #f87171; }


/* ── 3. Form elements ─────────────────────────────────────── */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 16px;
}

.form-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-label .required {
  color: var(--clr-danger, #dc2626);
  font-size: var(--fs-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  font-family: 'Poppins', inherit;
  font-size: var(--fs-sm);
  color: var(--text);
  line-height: 1.5;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); }

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.14);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
  box-shadow: 0 0 0 3px rgba(99,179,237,0.14);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--clr-danger, #dc2626);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.10);
}

.form-textarea { resize: vertical; min-height: 90px; }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
  cursor: pointer;
}

.form-hint {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  line-height: 1.4;
}

.form-error {
  font-size: var(--fs-xs);
  color: var(--clr-danger, #dc2626);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Checkbox / Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.form-check-input {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--card-border);
  border-radius: 4px;
  background: var(--bg-secondary);
  appearance: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--dur-fast), border-color var(--dur-fast);
  position: relative;
}

.form-check-input:checked {
  background: var(--primary);
  border-color: var(--primary);
}

.form-check-input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.form-check-input[type="radio"] {
  border-radius: 50%;
}

.form-check-input[type="radio"]:checked::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  border: none;
  transform: none;
}

.form-check-label {
  font-size: var(--fs-sm);
  color: var(--text);
  line-height: 1.4;
}

/* Toggle switch */
.form-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.form-toggle-track {
  width: 36px;
  height: 20px;
  background: var(--card-border);
  border-radius: 10px;
  position: relative;
  transition: background var(--dur-fast);
  flex-shrink: 0;
}

.form-toggle-thumb {
  position: absolute;
  left: 2px;
  top: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: left var(--dur-fast) var(--ease-out);
}

.form-toggle input:checked ~ .form-toggle-track { background: var(--primary); }
.form-toggle input:checked ~ .form-toggle-track .form-toggle-thumb { left: 18px; }
.form-toggle input { position: absolute; opacity: 0; width: 0; height: 0; }


/* ── 4. Alert / notification boxes ───────────────────────── */

.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  font-size: var(--fs-sm);
  line-height: 1.5;
}

.alert-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
}

.alert-body { flex: 1; min-width: 0; }

.alert-title {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
  font-size: var(--fs-sm);
}

.alert-desc { color: var(--text-secondary); }

.alert-dismiss {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: var(--radius-sm);
  line-height: 1;
  font-size: 1rem;
  transition: color var(--dur-fast);
}
.alert-dismiss:hover { color: var(--text); }

/* Colour variants */
.alert-info    { background: var(--primary-surface); border-color: color-mix(in srgb, var(--primary) 20%, transparent); }
.alert-info .alert-icon { color: var(--primary); }
.alert-info .alert-title { color: var(--primary); }

.alert-success { background: rgba(22,163,74,0.07); border-color: rgba(22,163,74,0.25); }
.alert-success .alert-icon, .alert-success .alert-title { color: var(--clr-success, #16a34a); }

.alert-warning { background: rgba(217,119,6,0.07); border-color: rgba(217,119,6,0.25); }
.alert-warning .alert-icon, .alert-warning .alert-title { color: #b45309; }

.alert-danger  { background: rgba(220,38,38,0.06); border-color: rgba(220,38,38,0.20); }
.alert-danger .alert-icon, .alert-danger .alert-title { color: var(--clr-danger, #dc2626); }

[data-theme="dark"] .alert-warning .alert-icon,
[data-theme="dark"] .alert-warning .alert-title { color: #fbbf24; }
[data-theme="dark"] .alert-warning { background: rgba(251,191,36,0.07); border-color: rgba(251,191,36,0.18); }
[data-theme="dark"] .alert-success { background: rgba(74,222,128,0.07); border-color: rgba(74,222,128,0.18); }
[data-theme="dark"] .alert-danger  { background: rgba(248,113,113,0.07); border-color: rgba(248,113,113,0.18); }
[data-theme="dark"] .alert-success .alert-icon,
[data-theme="dark"] .alert-success .alert-title { color: #4ade80; }
[data-theme="dark"] .alert-danger .alert-icon,
[data-theme="dark"] .alert-danger .alert-title  { color: #f87171; }


/* ── 5. Empty states ──────────────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  gap: 12px;
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  flex-shrink: 0;
}

.empty-state-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--text-muted);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.empty-state-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.empty-state-desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  max-width: 320px;
  line-height: var(--lh-snug);
  margin: 0;
}

/* Compact variant */
.empty-state-sm {
  padding: 24px 16px;
  gap: 8px;
}
.empty-state-sm .empty-state-icon { width: 40px; height: 40px; font-size: 1.25rem; }
.empty-state-sm .empty-state-title { font-size: var(--fs-sm); }
.empty-state-sm .empty-state-desc  { font-size: var(--fs-xs); }


/* ── 6. Loading skeleton + Spinner ────────────────────────── */

/* Skeleton base */
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    color-mix(in srgb, var(--bg-tertiary) 80%, var(--bg-secondary)) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 14px;
  border-radius: 4px;
}

.skeleton-title { height: 20px; width: 60%; border-radius: 4px; }

.skeleton-avatar {
  border-radius: 50%;
  flex-shrink: 0;
}

.skeleton-card {
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Skeleton rows helper */
.skeleton-lines {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.skeleton-lines .skeleton-text:nth-child(2) { width: 80%; }
.skeleton-lines .skeleton-text:nth-child(3) { width: 55%; }

/* Spinner */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--card-border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

.spinner-sm { width: 14px; height: 14px; border-width: 1.5px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

/* Full-page loading overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 9000;
}

.loading-overlay .spinner { width: 36px; height: 36px; border-width: 3px; }

.loading-overlay-text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  font-weight: 500;
}


/* ── 7. Avatar ────────────────────────────────────────────── */

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-surface);
  color: var(--primary);
  font-weight: 700;
  font-size: var(--fs-sm);
  flex-shrink: 0;
  overflow: hidden;
  width: 36px;
  height: 36px;
}

.avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }

.avatar-xs { width: 24px; height: 24px; font-size: var(--fs-xs); }
.avatar-sm { width: 30px; height: 30px; font-size: var(--fs-xs); }
.avatar-lg { width: 48px; height: 48px; font-size: var(--fs-md); }
.avatar-xl { width: 64px; height: 64px; font-size: var(--fs-lg); }

/* Avatar group (overlapping) */
.avatar-group {
  display: flex;
  align-items: center;
}
.avatar-group .avatar {
  border: 2px solid var(--bg-secondary);
  margin-left: -8px;
}
.avatar-group .avatar:first-child { margin-left: 0; }


/* ── 8. Divider ───────────────────────────────────────────── */

.divider {
  height: 1px;
  background: var(--card-border);
  border: none;
  margin: 16px 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background: var(--card-border);
  display: inline-block;
  margin: 0 10px;
  vertical-align: middle;
}

.divider-label {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 16px 0;
}
.divider-label::before,
.divider-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--card-border);
}


/* ── 9. Tooltip (CSS-only, via data-tooltip attribute) ────── */

[data-tooltip] {
  position: relative;
  cursor: default;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: var(--text);
  color: var(--bg);
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur-fast), transform var(--dur-fast);
  z-index: 200;
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* Tooltip positions */
[data-tooltip-pos="bottom"]::after {
  bottom: auto;
  top: calc(100% + 6px);
}
[data-tooltip-pos="right"]::after {
  left: calc(100% + 6px);
  bottom: auto;
  top: 50%;
  transform: translateY(-50%) scale(0.9);
}
[data-tooltip-pos="right"]:hover::after {
  transform: translateY(-50%) scale(1);
}


/* ── 10. Modal base ───────────────────────────────────────── */

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.52);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-backdrop.open { display: flex; }

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,0.28);
  padding: 24px;
  width: 90%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  animation: scaleIn 0.18s var(--ease-out);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.modal-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.modal-close {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  font-size: 1.1rem;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast);
}
.modal-close:hover { color: var(--text); }

.modal-body { color: var(--text-secondary); font-size: var(--fs-sm); line-height: 1.6; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--card-border);
}


/* ── 11. Section header row ───────────────────────────────── */
/* Shared pattern used in home.css and subject-dashboard.css  */

.section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.section-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text);
  margin: 0;
}

.section-link {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}
.section-link:hover { text-decoration: underline; }
.section-link svg {
  width: 13px; height: 13px;
  stroke: currentColor; fill: none;
  stroke-width: 2.5;
  stroke-linecap: round; stroke-linejoin: round;
}


/* ── 12. Utility / global helpers ─────────────────────────── */

/* Visually hidden (accessible) */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Truncate text */
.truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Flex gap shorthands */
.flex         { display: flex; }
.flex-col     { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.flex-1       { flex: 1; min-width: 0; }
.flex-shrink-0 { flex-shrink: 0; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

/* Text helpers */
.text-xs      { font-size: var(--fs-xs); }
.text-sm      { font-size: var(--fs-sm); }
.text-md      { font-size: var(--fs-md); }
.text-muted   { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--primary); }
.font-semibold { font-weight: 600; }
.font-bold    { font-weight: 700; }

/* Margin/padding shorthands */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.p-0  { padding: 0; }