/* ============================================
   CampusConnect — Shared Components
   ============================================ */

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.4rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.98); }

.btn-primary {
  background: var(--color-accent);
  color: #1a1b2e;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-accent-dark); box-shadow: var(--shadow-md); }

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1.5px solid var(--border-color-strong);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

[data-theme="dark"] .btn-secondary:hover { color: var(--color-accent-light); border-color: var(--color-accent); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover { background: var(--bg-surface-alt); color: var(--text-primary); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}
.btn-danger:hover { background: #b91c1c; }

.btn-block { width: 100%; }
.btn-sm { padding: 0.45rem 0.9rem; font-size: var(--fs-xs); }
.btn-icon {
  width: 38px; height: 38px; padding: 0;
  border-radius: var(--radius-md);
}

/* ---------------- Inputs / Forms ---------------- */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.field label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.field input,
.field select,
.field textarea {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-focus);
}

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

.field-error {
  font-size: var(--fs-xs);
  color: var(--color-danger);
  min-height: 1em;
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: var(--color-danger);
}

.field-hint { font-size: var(--fs-xs); color: var(--text-muted); }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}
.checkbox-row input { width: 16px; height: 16px; accent-color: var(--color-accent); }

/* ---------------- Cards ---------------- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-md); }

.card-interactive:hover { transform: translateY(-3px); border-color: var(--color-accent); }

/* ---------------- Badges ---------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.28em 0.75em;
  font-size: var(--fs-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: #92400e; }
.badge-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info); }
.badge-neutral { background: var(--bg-surface-alt); color: var(--text-secondary); border: 1px solid var(--border-color); }

[data-theme="dark"] .badge-success { background: rgba(22,163,74,.18); }
[data-theme="dark"] .badge-warning { background: rgba(245,158,11,.18); color: var(--color-accent-light); }
[data-theme="dark"] .badge-danger  { background: rgba(220,38,38,.2); }
[data-theme="dark"] .badge-info    { background: rgba(37,99,235,.2); }

/* Priority dots (used in Task Manager) */
.priority-dot {
  width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex-shrink: 0;
}
.priority-dot.low { background: var(--priority-low); }
.priority-dot.medium { background: var(--priority-medium); }
.priority-dot.high { background: var(--priority-high); }

/* ---------------- Modal ---------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 30, 0.55);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  padding: var(--space-4);
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px) scale(0.98);
  transition: transform var(--transition-base);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.active .modal { transform: translateY(0) scale(1); }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}
.modal-header h3 { font-size: var(--fs-lg); }
.modal-close {
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
}
.modal-close:hover { background: var(--bg-surface-alt); color: var(--text-primary); }
.modal-actions {
  display: flex; gap: var(--space-3); justify-content: flex-end; margin-top: var(--space-5);
}
.modal p.modal-message { color: var(--text-secondary); margin-bottom: var(--space-2); }

/* ---------------- Toasts ---------------- */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 340px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--color-info);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  animation: toastIn var(--transition-slow) both;
  font-size: var(--fs-sm);
}
.toast.success { border-left-color: var(--color-success); }
.toast.error   { border-left-color: var(--color-danger); }
.toast.warning { border-left-color: var(--color-warning); }

.toast.leaving { animation: toastOut var(--transition-base) both; }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(24px); }
}

.toast-icon { font-size: 1.1rem; line-height: 1; margin-top: 1px; }
.toast-text { flex: 1; color: var(--text-primary); }

/* ---------------- Empty States ---------------- */
.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-5);
  color: var(--text-muted);
}
.empty-state .empty-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-3);
  opacity: 0.7;
}
.empty-state h4 { color: var(--text-secondary); margin-bottom: var(--space-2); }
.empty-state p { font-size: var(--fs-sm); max-width: 320px; margin: 0 auto; }

/* ---------------- Misc ---------------- */
.divider { height: 1px; background: var(--border-color); border: none; margin: var(--space-5) 0; }

.avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #1a1b2e;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.theme-toggle {
  width: 42px; height: 42px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  transition: transform var(--transition-fast);
}
.theme-toggle:hover { transform: rotate(15deg); }