/* ==========================================================================
   SERENUT OS V2 - DESIGN SYSTEM COMPONENTS
   ========================================================================== */

/* ── 1. BUTTONS ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  user-select: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  color: var(--neutral-50) !important;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-500) 100%);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35), var(--shadow-primary-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--neutral-800);
  color: var(--neutral-100) !important;
  border: 1px solid var(--neutral-700);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--neutral-700);
  border-color: var(--neutral-600);
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-500) 0%, hsl(var(--danger-hue), 85%, 45%) 100%);
  color: var(--neutral-50) !important;
  box-shadow: 0 4px 14px var(--danger-glow);
}

.btn-danger:hover {
  background: var(--danger-500);
  box-shadow: 0 8px 20px var(--danger-glow), 0 0 12px var(--danger-glow);
  transform: translateY(-1px);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning-500) 0%, hsl(var(--warning-hue), 90%, 40%) 100%);
  color: var(--neutral-950) !important;
}

.btn-warning:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-500);
  color: var(--primary-400) !important;
}

.btn-outline:hover {
  background: var(--primary-500);
  color: var(--neutral-950) !important;
  box-shadow: var(--shadow-primary-glow);
  transform: translateY(-1px);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

/* ── 2. INPUTS & FORMS ────────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.form-row {
  display: flex;
  gap: var(--space-4);
}

.form-row .form-group {
  flex: 1;
  min-width: 0;
}

.form-label {
  font-size: 0.82rem;
  color: var(--neutral-400);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.form-label span.required {
  color: var(--danger-500);
  margin-left: 2px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="url"],
select,
textarea {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--neutral-800);
  border-radius: var(--radius-md);
  color: var(--neutral-50);
  padding: var(--space-3) var(--space-4);
  font-size: 0.92rem;
  outline: none;
  transition: all var(--transition-fast);
  width: 100%;
}

input:hover, select:hover, textarea:hover {
  border-color: var(--neutral-700);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
  background: rgba(15, 23, 42, 0.6);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 16px;
  padding-right: var(--space-8);
}

/* Custom Checkbox */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
  font-size: 0.9rem;
  color: var(--neutral-300);
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-500);
  cursor: pointer;
  border-radius: var(--radius-xs);
}

/* ── 3. CARDS & GLASS PANELS ───────────────────────────────────────────────── */
.card, .glass-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.card:hover, .glass-panel:hover {
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow), 0 0 24px rgba(16, 185, 129, 0.05);
}

.border-teal { border-left: 4px solid var(--primary-500); }
.border-purple { border-left: 4px solid var(--secondary-500); }
.border-amber { border-left: 4px solid var(--warning-500); }
.border-red { border-left: 4px solid var(--danger-500); }

/* ── 4. BADGES & INDICATORS ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--neutral-800);
  color: var(--neutral-300);
}

.badge-active, .badge-paid, .badge-success, .badge-open, .badge-up {
  background: rgba(16, 185, 129, 0.1);
  color: var(--primary-400);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-suspended, .badge-warning, .badge-replied, .badge-pending, .badge-pending_review {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning-500);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-revoked, .badge-disabled, .badge-danger, .badge-unpaid, .badge-down {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger-500);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-trial, .badge-info, .badge-pro {
  background: rgba(0, 240, 255, 0.1);
  color: var(--info-400);
  border: 1px solid rgba(0, 240, 255, 0.2);
}

/* Status Indicator Dot */
.indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  font-weight: 500;
}

.indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.indicator.online::before {
  background-color: var(--primary-500);
  box-shadow: 0 0 8px var(--primary-400);
}

.indicator.offline::before {
  background-color: var(--danger-500);
  box-shadow: 0 0 8px var(--danger-500);
}

/* ── 5. TABLES ───────────────────────────────────────────────────────────── */
.table-container {
  overflow-x: auto;
  background: rgba(15, 23, 42, 0.3);
  border: 1px solid var(--neutral-800);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: var(--neutral-900);
  color: var(--neutral-300);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--neutral-800);
}

td {
  padding: var(--space-4) var(--space-5);
  font-size: 0.88rem;
  border-bottom: 1px solid var(--neutral-900);
  color: var(--neutral-200);
  transition: all var(--transition-fast);
}

tr {
  transition: background var(--transition-fast);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
  color: var(--neutral-50);
}

tr:last-child td {
  border-bottom: none;
}

/* ── 6. MODALS, DRAWERS & OVERLAYS ────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(2, 6, 23, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn var(--transition-fast) ease-out;
  padding: var(--space-4);
}

.modal-overlay.active {
  display: flex !important;
}

.modal-card {
  width: 100%;
  max-width: 580px;
  background: var(--neutral-900);
  border: 1px solid var(--neutral-800);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.5);
  padding: var(--space-6);
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  animation: modalScaleIn var(--transition-normal) cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--neutral-800);
  padding-bottom: var(--space-3);
}

.modal-header h3 {
  font-size: 1.2rem;
  color: var(--neutral-50);
}

.modal-close {
  font-size: 1.5rem;
  color: var(--neutral-400);
  transition: color var(--transition-fast);
  line-height: 1;
}

.modal-close:hover {
  color: var(--danger-500);
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  border-top: 1px solid var(--neutral-800);
  padding-top: var(--space-4);
}

/* Responsive side drawer */
.drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  right: 0;
  width: 400px;
  max-width: 100%;
  background: var(--neutral-900);
  border-left: 1px solid var(--neutral-800);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-drawer);
  transform: translateX(100%);
  transition: transform var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.drawer.active {
  transform: translateX(0);
}

/* ── 7. ALERTS, TOASTS & NOTIFICATIONS ────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 0.9rem;
}

.alert-success {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--primary-200);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.2);
  color: hsl(var(--warning-hue), 90%, 75%);
}

.alert-danger {
  background: rgba(239, 68, 68, 0.08);
  border-color: rgba(239, 68, 68, 0.2);
  color: hsl(var(--danger-hue), 90%, 75%);
}

.alert-info {
  background: rgba(0, 240, 255, 0.08);
  border-color: rgba(0, 240, 255, 0.2);
  color: var(--info-400);
}

/* Toast System */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  z-index: var(--z-toast);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--neutral-900);
  border: 1px solid var(--neutral-800);
  border-left: 4px solid var(--primary-500);
  color: var(--neutral-100);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.88rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: toastIn var(--transition-normal) cubic-bezier(0.34, 1.56, 0.64, 1);
  min-width: 280px;
  max-width: 400px;
}

.toast.toast-error {
  border-left-color: var(--danger-500);
}

.toast.toast-warning {
  border-left-color: var(--warning-500);
}

/* ── 8. LOADERS & EMPTY STATES ────────────────────────────────────────────── */
.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(16, 185, 129, 0.15);
  border-top-color: var(--primary-500);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  gap: var(--space-4);
  color: var(--neutral-400);
}

/* Skeleton loader */
.skeleton {
  background: linear-gradient(90deg, var(--neutral-800) 25%, var(--neutral-700) 50%, var(--neutral-800) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.6s infinite;
  border-radius: var(--radius-xs);
  display: inline-block;
  width: 100%;
  height: 1.25rem;
}

.skeleton-text { height: 0.9rem; margin-bottom: var(--space-2); }
.skeleton-title { height: 1.6rem; margin-bottom: var(--space-4); width: 60%; }
.skeleton-avatar { width: 44px; height: 44px; border-radius: var(--radius-full); }
.skeleton-button { height: 2.6rem; width: 140px; border-radius: var(--radius-md); }

/* Empty state layout */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
  background: rgba(15, 23, 42, 0.2);
  border: 2px dashed var(--neutral-800);
  border-radius: var(--radius-lg);
  gap: var(--space-4);
  max-width: 440px;
  margin: var(--space-6) auto;
}

.empty-state-icon {
  font-size: 3rem;
  color: var(--neutral-500);
}

.empty-state-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--neutral-100);
}

.empty-state-desc {
  font-size: 0.85rem;
  color: var(--neutral-400);
  line-height: 1.5;
}

/* ── 9. KEYFRAME ANIMATIONS ──────────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalScaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(24px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}