/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}
.btn:hover::after { background: rgba(255,255,255,0.08); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-indigo-500));
  color: #fff;
  box-shadow: 0 4px 15px rgba(91,47,192,0.4);
}
.btn-primary:hover { box-shadow: 0 6px 20px rgba(91,47,192,0.5); }

.btn-secondary {
  background: var(--bg-surface2);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover { border-color: var(--border-strong); color: var(--text-primary); }

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold-600), var(--color-gold-500));
  color: #fff;
  box-shadow: 0 4px 15px rgba(245,158,11,0.4);
}

.btn-success {
  background: var(--color-success-500);
  color: #fff;
}

.btn-danger {
  background: var(--color-danger-500);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background: var(--bg-surface2);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline-primary {
  background: transparent;
  color: var(--color-primary-500);
  border: 1px solid var(--color-primary-400);
}
.btn-outline-primary:hover {
  background: var(--color-primary-500);
  color: #fff;
}

.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); }
.btn-lg { padding: var(--space-3) var(--space-8); font-size: var(--text-lg); }
.btn-xl { padding: var(--space-4) var(--space-10); font-size: var(--text-xl); }
.btn-icon {
  padding: var(--space-2);
  width: 36px; height: 36px;
  border-radius: var(--radius-lg);
}
.btn-icon-sm { padding: var(--space-1); width: 28px; height: 28px; }
.btn-block { width: 100%; }

/* ===== CARDS ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-lg); }
.card-hover:hover { transform: translateY(-2px); }

.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.card-body { padding: var(--space-6); }
.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface2);
}
.card-sm .card-body { padding: var(--space-4); }

/* Glass card */
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

/* Stat card */
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.stat-card.primary::before  { background: linear-gradient(90deg, var(--color-primary-600), var(--color-indigo-400)); }
.stat-card.gold::before     { background: linear-gradient(90deg, var(--color-gold-600), var(--color-gold-400)); }
.stat-card.success::before  { background: linear-gradient(90deg, var(--color-success-600), var(--color-success-500)); }
.stat-card.danger::before   { background: linear-gradient(90deg, var(--color-danger-600), var(--color-danger-500)); }
.stat-card.info::before     { background: linear-gradient(90deg, var(--color-info-600), var(--color-info-500)); }

.stat-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-xl);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-xl);
  flex-shrink: 0;
}
.stat-icon.primary  { background: rgba(91,47,192,0.12); color: var(--color-primary-500); }
.stat-icon.gold     { background: rgba(245,158,11,0.12); color: var(--color-gold-500); }
.stat-icon.success  { background: rgba(16,185,129,0.12); color: var(--color-success-500); }
.stat-icon.danger   { background: rgba(239,68,68,0.12);  color: var(--color-danger-500); }
.stat-icon.info     { background: rgba(14,165,233,0.12); color: var(--color-info-500); }

.stat-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  line-height: 1.1;
  color: var(--text-primary);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}
.stat-change {
  font-size: var(--text-xs);
  margin-top: var(--space-1);
  display: flex; align-items: center; gap: var(--space-1);
}
.stat-change.up   { color: var(--color-success-500); }
.stat-change.down { color: var(--color-danger-500); }

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  white-space: nowrap;
}
.badge-primary { background: rgba(91,47,192,0.12); color: var(--color-primary-500); }
.badge-gold    { background: rgba(245,158,11,0.12); color: var(--color-gold-600); }
.badge-success { background: rgba(16,185,129,0.12); color: var(--color-success-600); }
.badge-danger  { background: rgba(239,68,68,0.12);  color: var(--color-danger-600); }
.badge-info    { background: rgba(14,165,233,0.12); color: var(--color-info-600); }
.badge-muted   { background: var(--bg-surface2); color: var(--text-muted); }
.badge-sm { font-size: 0.65rem; padding: 1px 6px; }
.badge-lg { font-size: var(--text-sm); padding: var(--space-1) var(--space-3); }

/* Level badges */
.level-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  flex-shrink: 0;
}
.level-1 { background: #fee2e2; color: #dc2626; }
.level-2 { background: #fef3c7; color: #d97706; }
.level-3 { background: #dbeafe; color: #2563eb; }
.level-4 { background: #d1fae5; color: #059669; }
.level-5 { background: #ede9fe; color: #7c3aed; }

/* ===== PROGRESS BARS ===== */
.progress-wrap { width: 100%; }
.progress-track {
  width: 100%;
  height: 8px;
  background: var(--progress-track);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.progress-fill::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
  animation: shimmer 2s infinite;
}
.progress-track.lg { height: 12px; }
.progress-track.sm { height: 4px; }

.progress-fill.primary { background: linear-gradient(90deg, var(--color-primary-600), var(--color-indigo-400)); }
.progress-fill.gold    { background: linear-gradient(90deg, var(--color-gold-600), var(--color-gold-400)); }
.progress-fill.success { background: linear-gradient(90deg, var(--color-success-600), var(--color-success-500)); }
.progress-fill.danger  { background: linear-gradient(90deg, var(--color-danger-600), var(--color-danger-500)); }

.progress-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

/* ===== FORMS ===== */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.form-label.required::after {
  content: ' *';
  color: var(--color-danger-500);
}
.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  outline: none;
}
.form-control:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(91,47,192,0.15);
}
.form-control::placeholder { color: var(--text-disabled); }
.form-control:disabled {
  background: var(--bg-surface2);
  cursor: not-allowed;
  opacity: 0.6;
}
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { cursor: pointer; }

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}
.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger-500);
  margin-top: var(--space-1);
}
.form-control.is-invalid { border-color: var(--color-danger-500); }
.form-control.is-valid   { border-color: var(--color-success-500); }

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px; height: 18px;
  border: 2px solid var(--input-border);
  border-radius: 4px;
  background: var(--input-bg);
  cursor: pointer;
  accent-color: var(--color-primary-500);
  flex-shrink: 0;
  margin-top: 2px;
}
.form-check-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1.4;
}

/* ===== TABLES ===== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--table-border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
thead th {
  background: var(--table-header);
  padding: var(--space-3) var(--space-4);
  font-weight: var(--font-semi);
  color: var(--text-secondary);
  text-align: left;
  border-bottom: 1px solid var(--table-border);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
}
tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--table-border);
  color: var(--text-primary);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) td { background: var(--table-row-alt); }
tbody tr:hover td {
  background: rgba(91,47,192,0.04);
  cursor: pointer;
}

/* ===== AVATAR ===== */
.avatar {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: #fff;
  flex-shrink: 0;
  overflow: hidden;
}
.avatar-sm { width: 32px; height: 32px; font-size: var(--text-xs); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--text-xl); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--text-2xl); }

/* ===== TABS ===== */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab-item {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
  white-space: nowrap;
  display: flex; align-items: center; gap: var(--space-2);
  background: none;
  border-top: none; border-left: none; border-right: none;
  font-family: var(--font-sans);
}
.tab-item:hover { color: var(--text-primary); background: var(--bg-surface2); border-radius: var(--radius-md) var(--radius-md) 0 0; }
.tab-item.active {
  color: var(--color-primary-500);
  border-bottom-color: var(--color-primary-500);
  font-weight: var(--font-semi);
}

/* ===== STEP INDICATOR ===== */
.steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: var(--space-8);
  overflow-x: auto;
}
.step {
  display: flex; align-items: center;
  flex: 1;
  min-width: 0;
}
.step-circle {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-color);
  background: var(--bg-surface);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--text-muted);
  flex-shrink: 0;
  transition: all var(--transition-base);
  z-index: 1;
}
.step.active .step-circle {
  background: var(--color-primary-500);
  border-color: var(--color-primary-500);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(91,47,192,0.2);
}
.step.completed .step-circle {
  background: var(--color-success-500);
  border-color: var(--color-success-500);
  color: #fff;
}
.step-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
  text-align: center;
  white-space: nowrap;
}
.step.active .step-label { color: var(--color-primary-500); font-weight: var(--font-medium); }
.step.completed .step-label { color: var(--color-success-500); }
.step-line {
  flex: 1;
  height: 2px;
  background: var(--border-color);
  transition: background var(--transition-base);
}
.step.completed + .step .step-line,
.step-line.completed { background: var(--color-success-500); }
.step-inner { display: flex; flex-direction: column; align-items: center; }

/* ===== SEARCH ===== */
.search-wrap {
  position: relative;
  display: flex; align-items: center;
}
.search-wrap i {
  position: absolute;
  left: var(--space-3);
  color: var(--text-muted);
  pointer-events: none;
}
.search-wrap .form-control {
  padding-left: var(--space-8);
}

/* ===== DROPDOWN ===== */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 200px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  overflow: hidden;
  animation: slideDown 0.2s ease;
}
.dropdown-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast);
  border: none; background: none;
  width: 100%; text-align: left;
  font-family: var(--font-sans);
}
.dropdown-item:hover { background: var(--bg-surface2); color: var(--text-primary); }
.dropdown-item.danger:hover { background: var(--color-danger-100); color: var(--color-danger-600); }
.dropdown-divider { border-top: 1px solid var(--border-color); margin: var(--space-1) 0; }

/* ===== TOOLTIP ===== */
.tooltip-wrap { position: relative; display: inline-flex; }
.tooltip-text {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-surface);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: var(--z-tooltip);
}
.tooltip-wrap:hover .tooltip-text { opacity: 1; }

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-8);
  color: var(--text-muted);
}
.empty-state i {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
  display: block;
}
.empty-state h4 { color: var(--text-secondary); margin-bottom: var(--space-2); }
.empty-state p { font-size: var(--text-sm); }

/* ===== ALERT ===== */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  display: flex; gap: var(--space-3); align-items: flex-start;
  border: 1px solid transparent;
}
.alert-primary { background: rgba(91,47,192,0.08); border-color: rgba(91,47,192,0.2); color: var(--color-primary-600); }
.alert-success { background: var(--color-success-100); border-color: rgba(16,185,129,0.3); color: var(--color-success-600); }
.alert-warning { background: var(--color-warning-100); border-color: rgba(245,158,11,0.3); color: var(--color-warning-600); }
.alert-danger  { background: var(--color-danger-100);  border-color: rgba(239,68,68,0.3);  color: var(--color-danger-600); }
.alert-info    { background: var(--color-info-100);    border-color: rgba(14,165,233,0.3);  color: var(--color-info-600); }

/* ===== SWITCH / TOGGLE ===== */
.switch {
  position: relative;
  display: inline-block;
  width: 44px; height: 24px;
  flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-color);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}
.switch-slider::before {
  content: '';
  position: absolute;
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background: white;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.switch input:checked + .switch-slider { background: var(--color-primary-500); }
.switch input:checked + .switch-slider::before { transform: translateX(20px); }

/* ===== COMPETENCY CARD ===== */
.competency-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.competency-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--color-primary-500);
}
.competency-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.competency-card.gold::before   { background: var(--color-gold-500); }
.competency-card.success::before { background: var(--color-success-500); }
.competency-card.info::before   { background: var(--color-info-500); }
.competency-card.danger::before { background: var(--color-danger-500); }

/* ===== NOTIFICATION DOT ===== */
.notif-dot {
  position: absolute;
  top: -2px; right: -2px;
  width: 8px; height: 8px;
  background: var(--color-danger-500);
  border-radius: var(--radius-full);
  border: 2px solid var(--topbar-bg);
}
.notif-count {
  position: absolute;
  top: -6px; right: -6px;
  min-width: 18px; height: 18px;
  background: var(--color-danger-500);
  color: #fff;
  font-size: 0.65rem;
  font-weight: var(--font-bold);
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
  border: 2px solid var(--topbar-bg);
}

/* ===== QUIZ ANSWER OPTIONS ===== */
.quiz-option {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--card-bg);
  text-align: left;
  width: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--text-primary);
}
.quiz-option:hover { border-color: var(--color-primary-400); background: rgba(91,47,192,0.04); }
.quiz-option.selected { border-color: var(--color-primary-500); background: rgba(91,47,192,0.08); }
.quiz-option.correct  { border-color: var(--color-success-500); background: rgba(16,185,129,0.08); }
.quiz-option.wrong    { border-color: var(--color-danger-500);  background: rgba(239,68,68,0.08); }
.quiz-option:disabled { pointer-events: none; }

.option-letter {
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
  background: var(--bg-surface2);
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}
.quiz-option.selected .option-letter { background: var(--color-primary-500); color: #fff; }
.quiz-option.correct .option-letter  { background: var(--color-success-500); color: #fff; }
.quiz-option.wrong .option-letter    { background: var(--color-danger-500);  color: #fff; }

/* ===== LEVEL SELECTOR ===== */
.level-card {
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--card-bg);
  text-align: center;
  position: relative;
}
.level-card:hover { border-color: var(--color-primary-400); box-shadow: var(--shadow-md); }
.level-card.selected {
  border-color: var(--color-primary-500);
  background: rgba(91,47,192,0.06);
  box-shadow: 0 0 0 4px rgba(91,47,192,0.1);
}
.level-card .level-num {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-500);
}
.level-card.selected .level-num { color: var(--color-primary-600); }

/* ===== ACHIEVEMENT BADGE ===== */
.achievement {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-base);
}
.achievement.unlocked { background: rgba(245,158,11,0.08); }
.achievement.locked   { opacity: 0.4; filter: grayscale(1); }
.achievement-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
}
.achievement.unlocked .achievement-icon {
  background: linear-gradient(135deg, var(--color-gold-500), var(--color-gold-600));
  box-shadow: var(--shadow-glow-gold);
}
.achievement.locked .achievement-icon {
  background: var(--bg-surface2);
}

/* ===== HEATMAP ===== */
.heatmap-cell {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: #fff;
  cursor: default;
}
.heat-0 { background: var(--bg-surface2); color: var(--text-muted); }
.heat-1 { background: var(--color-danger-500); }
.heat-2 { background: var(--color-warning-500); }
.heat-3 { background: var(--color-info-500); }
.heat-4 { background: var(--color-success-500); }
.heat-5 { background: var(--color-primary-500); }