/* ========================================================
   Neky's BuGas — UI Components
   ======================================================== */

/* 1. Buttons with Tactile Feel */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--r-md);
  transition: transform var(--trans-fast), box-shadow var(--trans-fast), background var(--trans-fast);
  position: relative;
  overflow: hidden;
  line-height: 1;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--g-brand);
  color: #FFFFFF;
  box-shadow: var(--glow-button);
}
.btn-primary:hover {
  background: var(--g-brand-hover);
  box-shadow: var(--glow-brand);
}

.btn-secondary {
  background: var(--c-surface-card);
  color: var(--c-text);
  border: 1px solid var(--c-border);
}
.btn-secondary:hover {
  background: var(--c-surface-hover);
  border-color: var(--c-border-strong);
}

.btn-ghost {
  color: var(--c-text-muted);
}
.btn-ghost:hover {
  background: var(--c-surface-hover);
  color: var(--c-text);
}

.btn-danger {
  background: var(--c-danger);
  color: #FFFFFF;
  box-shadow: 0 0 16px var(--c-danger-glow);
}
.btn-danger:hover {
  opacity: 0.9;
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--r-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--r-sm);
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1.05rem;
  border-radius: var(--r-lg);
}

/* 2. Glass Cards */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  transition: transform var(--trans-normal), box-shadow var(--trans-normal), border-color var(--trans-normal);
  position: relative;
}

.card-glass {
  background: var(--c-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.card-interactive {
  cursor: pointer;
}
.card-interactive:hover {
  border-color: var(--c-border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card), 0 0 20px var(--c-accent-glow);
}
.card-interactive:active {
  transform: scale(0.98);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
}

/* 3. Status Badges & Traffic Light */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--r-full);
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.badge-ok {
  background: rgba(34, 211, 165, 0.12);
  color: var(--c-success);
  border: 1px solid rgba(34, 211, 165, 0.3);
}
.badge-ok .badge-dot {
  background: var(--c-success);
  box-shadow: 0 0 8px var(--c-success-glow);
}

.badge-warning {
  background: rgba(255, 176, 32, 0.12);
  color: var(--c-warning);
  border: 1px solid rgba(255, 176, 32, 0.3);
}
.badge-warning .badge-dot {
  background: var(--c-warning);
  box-shadow: 0 0 8px var(--c-warning-glow);
}

.badge-danger {
  background: rgba(255, 77, 109, 0.12);
  color: var(--c-danger);
  border: 1px solid rgba(255, 77, 109, 0.3);
}
.badge-danger .badge-dot {
  background: var(--c-danger);
  box-shadow: 0 0 8px var(--c-danger-glow);
}

/* 4. Form Controls */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-text-muted);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--c-surface-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  color: var(--c-text);
  font-size: 0.95rem;
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-glow);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--c-text-subtle);
}

.form-error {
  font-size: 0.8rem;
  color: var(--c-danger);
}

/* Switch & Checkbox */
.form-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.form-switch input {
  position: absolute;
  opacity: 0;
}

.switch-slider {
  width: 46px;
  height: 26px;
  background: var(--c-surface-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  position: relative;
  transition: background var(--trans-fast), border-color var(--trans-fast);
}

.switch-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #FFFFFF;
  border-radius: 50%;
  transition: transform var(--trans-fast);
}

.form-switch input:checked + .switch-slider {
  background: var(--c-primary);
  border-color: var(--c-primary);
}

.form-switch input:checked + .switch-slider::after {
  transform: translateX(20px);
}

/* 5. Modals & Bottom Sheets */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 11, 26, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--trans-normal), visibility var(--trans-normal);
  padding: 1rem;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--trans-normal);
}

.modal-dialog > form,
.modal-dialog form {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.modal-backdrop.active .modal-dialog {
  transform: scale(1);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--c-surface-card);
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
  z-index: 10;
}

.modal-handle {
  display: none;
}

/* Mobile Bottom Sheet Transformation */
@media (max-width: 767px) {
  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal-dialog {
    max-width: 100%;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    transform: translateY(100%);
    border-left: none;
    border-right: none;
    border-bottom: none;
  }

  .modal-backdrop.active .modal-dialog {
    transform: translateY(0);
  }

  .modal-handle {
    display: block;
    width: 40px;
    height: 5px;
    background: var(--c-border-strong);
    border-radius: var(--r-full);
    margin: 0.75rem auto 0.25rem;
    cursor: grab;
  }
}

/* 6. Tabs */
.tabs-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--c-border);
  overflow-x: auto;
  scrollbar-width: none;
  margin-bottom: 1.5rem;
}
.tabs-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  color: var(--c-text-muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all var(--trans-fast);
}

.tab-btn:hover {
  color: var(--c-text);
}

.tab-btn.active {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* 7. Toasts */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--c-surface-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-modal);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 280px;
  max-width: 420px;
  animation: toastIn 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.toast-success { border-color: var(--c-success); }
.toast-error { border-color: var(--c-danger); }

/* 8. Skeletons */
.skeleton {
  background: linear-gradient(90deg, var(--c-surface-card) 25%, var(--c-surface-hover) 50%, var(--c-surface-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-sm);
}

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

/* 9. Ripple Effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
  transform: scale(0);
  animation: rippleAnim 0.6s linear;
  pointer-events: none;
}

@keyframes rippleAnim {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* 10. Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  color: var(--c-accent);
  opacity: 0.85;
}