/* ═══════════════════════════════════════════════════════════
   COMPONENTS - Buttons, Cards, Forms
   ════════════════════════════════════════════════════════════ */

/* ── Button System ─────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--trans-fast);
  user-select: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Primary Button - Blue */
.btn-primary,
.btn-primary-home {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-light)
  );
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover,
.btn-primary-home:hover {
  background: linear-gradient(135deg, #1a3a8a, var(--color-primary));
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-primary:active,
.btn-primary-home:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-primary-home {
  box-shadow: 0 12px 24px -12px rgba(59, 130, 246, 0.75);
}

/* Secondary Button - White */
.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-primary-lightest);
  transform: translateY(-2px);
}

[data-theme="dark"] .btn-secondary {
  background: rgba(15, 23, 42, 0.85);
  color: #e2e8f0;
  border-color: rgba(148, 163, 184, 0.35);
}

[data-theme="dark"] .btn-secondary:hover {
  background: rgba(30, 41, 59, 0.95);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-lightest);
  border-color: var(--color-primary-light);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: none;
}

.btn-ghost:hover {
  background: var(--color-white-bg);
  text-decoration: underline;
}

/* Success Button */
.btn-success {
  background: var(--color-success);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-2px);
}

/* Error Button */
.btn-danger {
  background: var(--color-error);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-2px);
}

/* Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

.btn-block {
  width: 100%;
}

/* Loading state */
.btn-loading {
  pointer-events: none;
  opacity: 0.7;
}

/* ── Card Component ────────────────────────────────────────── */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: all var(--trans-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-lightest);
}

[data-theme="dark"] .card,
[data-theme="dark"] .card-glass {
  background: var(--surface, #121826);
  border-color: var(--border, rgba(148, 163, 184, 0.24));
  box-shadow: 0 12px 26px -18px rgba(2, 6, 23, 0.9);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-gray);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-dark);
  margin: 0;
}

.card-body {
  margin-bottom: var(--space-2);
}

.card-footer {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-gray);
}

/* Glass Card Effect */
.card-glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ── Input Component ───────────────────────────────────────── */

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.input-label {
  font-weight: 600;
  color: var(--color-text-dark);
  font-size: var(--text-sm);
}

.input-field,
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-gray);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: all var(--trans-fast);
  background: var(--color-white);
  color: var(--color-text-dark);
}

[data-theme="dark"] .input-field,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background: rgba(15, 23, 42, 0.8);
  border-color: rgba(148, 163, 184, 0.3);
  color: #e2e8f0;
}

.input-field:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lightest);
  background: var(--color-white-hover);
}

.input-field:disabled,
textarea:disabled,
select:disabled {
  background: var(--color-white-bg);
  cursor: not-allowed;
  opacity: 0.6;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.input-help {
  font-size: var(--text-xs);
  color: var(--color-gray-dark);
  margin-top: var(--space-sm);
}

.input-error {
  border-color: var(--color-error) !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

.input-error ~ .input-help {
  color: var(--color-error);
}

/* ── Badge Component ───────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: var(--color-primary-lightest);
  color: var(--color-primary);
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.badge-error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

/* ── Alert Component ───────────────────────────────────────── */

.alert {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  border-left: 4px solid;
  background-color: var(--color-white);
}

.alert-success {
  border-color: var(--color-success);
  background: rgba(16, 185, 129, 0.05);
  color: var(--color-success);
}

.alert-error {
  border-color: var(--color-error);
  background: rgba(239, 68, 68, 0.05);
  color: var(--color-error);
}

.alert-warning {
  border-color: var(--color-warning);
  background: rgba(245, 158, 11, 0.05);
  color: var(--color-warning);
}

.alert-info {
  border-color: var(--color-info);
  background: rgba(59, 130, 246, 0.05);
  color: var(--color-info);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert-content h4 {
  margin: 0 0 var(--space-sm) 0;
  font-size: var(--text-base);
}

.alert-content p {
  margin: 0;
  font-size: var(--text-sm);
}

/* ── Avatar Component ──────────────────────────────────────── */

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  font-weight: 600;
  flex-shrink: 0;
}

.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: var(--text-xs);
}
.avatar-md {
  width: 48px;
  height: 48px;
  font-size: var(--text-sm);
}
.avatar-lg {
  width: 64px;
  height: 64px;
  font-size: var(--text-base);
}

.avatar-group {
  display: flex;
  gap: -8px;
}

.avatar-group .avatar {
  border: 2px solid var(--color-white);
  margin-left: -8px;
}

.avatar-group .avatar:first-child {
  margin-left: 0;
}

/* ── Mobile Responsive ─────────────────────────────────────── */

@media (max-width: 640px) {
  .btn {
    padding: 0.65rem 1.25rem;
    font-size: var(--text-sm);
  }

  .btn-lg {
    padding: 0.85rem 1.5rem;
    font-size: var(--text-base);
  }

  .card {
    padding: var(--space-2);
  }

  .input-field,
  textarea,
  select {
    padding: 0.65rem 0.875rem;
  }
}