/* ========================================
   Payment Gateway Settings – Admin Styles
   Mobile-first, matching checkout form
   ======================================== */

:root {
  --c-primary: #2563eb;
  --c-primary-dark: #1d4ed8;
  --c-primary-light: #dbeafe;
  --c-success: #16a34a;
  --c-success-bg: #dcfce7;
  --c-border: #e2e8f0;
  --c-bg: #f1f5f9;
  --c-surface: #ffffff;
  --c-text: #1e293b;
  --c-text-muted: #64748b;
  --c-danger: #dc2626;
  --c-danger-bg: #fef2f2;
  --c-warning: #d97706;
  --c-warning-bg: #fffbeb;
  --radius: 12px;
  --radius-sm: 8px;
  --max-w: 640px;
  --transition: 0.2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Layout ─── */

.admin-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  text-align: center;
  padding: 24px 0 16px;
}

.admin-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--c-text);
}

.subtitle {
  font-size: 0.875rem;
  color: var(--c-text-muted);
  margin: 0;
}

/* ─── Loading Bar ─── */

.loading-bar {
  height: 3px;
  background: var(--c-border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 16px;
  position: relative;
}

.loading-bar.is-hidden {
  display: none;
}

.loading-fill {
  height: 100%;
  width: 30%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-primary-light));
  border-radius: 2px;
  animation: loadingSlide 1.2s ease-in-out infinite;
}

@keyframes loadingSlide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ─── Gateway Card ─── */

.gateway-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  transition: box-shadow var(--transition), opacity var(--transition);
  position: relative;
}

.gateway-card.is-disabled {
  opacity: 0.55;
}

.gateway-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.gateway-info {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.gateway-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--c-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.gateway-meta {
  flex: 1;
  min-width: 0;
}

.gateway-name {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.gateway-desc {
  font-size: 0.8125rem;
  color: var(--c-text-muted);
  margin: 0;
}

/* ─── Toggle Switch ─── */

.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.toggle-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--c-text-muted);
  transition: color var(--transition);
}

.toggle-label.is-active {
  color: var(--c-primary);
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: #cbd5e1;
  border-radius: 24px;
  cursor: pointer;
  transition: background var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 3px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

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

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

.toggle-switch input:focus-visible + .toggle-slider {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* ─── Badges ─── */

.badges {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-sandbox {
  background: var(--c-warning-bg);
  color: var(--c-warning);
  border: 1px solid #fde68a;
}

.badge-live {
  background: var(--c-success-bg);
  color: var(--c-success);
  border: 1px solid #bbf7d0;
}

.badge-off {
  background: var(--c-border);
  color: var(--c-text-muted);
}

/* ─── Gateway Body (collapsible fields) ─── */

.gateway-body {
  padding-top: 4px;
  display: none;
}

.gateway-body.is-visible {
  display: block;
}

/* ─── Form Fields ─── */

.field-group {
  margin-bottom: 14px;
}

.field-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 4px;
}

.field-label .required {
  color: var(--c-danger);
  margin-left: 2px;
}

.field-hint {
  font-size: 0.75rem;
  color: var(--c-text-muted);
  margin: 2px 0 6px;
}

.input-wrap {
  position: relative;
}

.input-wrap input,
.input-wrap select {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.875rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: inherit;
}

.input-wrap input:focus,
.input-wrap select:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-light);
}

.input-wrap input::placeholder {
  color: #94a3b8;
}

.input-wrap select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M2.5 4.5l3.5 3.5 3.5-3.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

/* ─── Password Toggle ─── */

.pw-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 6px;
  cursor: pointer;
  color: var(--c-text-muted);
  font-size: 1rem;
  line-height: 1;
  transition: color var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pw-toggle:hover {
  color: var(--c-text);
}

.pw-toggle:focus-visible {
  outline: 2px solid var(--c-primary);
  border-radius: 4px;
}

.input-wrap input[type="password"] {
  padding-right: 40px;
}

/* ─── Mode Selector ─── */

.mode-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.mode-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.mode-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.mode-btn.is-active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

.mode-btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* ─── Test Button ─── */

.test-btn-wrap {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--c-border);
}

.btn-test {
  font-size: 0.8125rem;
  padding: 8px 16px;
  border: 1px solid var(--c-success);
  background: transparent;
  color: var(--c-success);
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-test:hover {
  background: var(--c-success-bg);
}

.btn-test:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-test:focus-visible {
  outline: 2px solid var(--c-success);
  outline-offset: 2px;
}

/* ─── Buttons ─── */

.settings-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.btn {
  flex: 1;
  padding: 12px 20px;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--c-primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--c-primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* ─── Result Box ─── */

.result-box {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
}

.result-box.is-hidden {
  display: none;
}

.result-box.is-success {
  background: var(--c-success-bg);
  color: var(--c-success);
  border: 1px solid #bbf7d0;
}

.result-box.is-error {
  background: var(--c-danger-bg);
  color: var(--c-danger);
  border: 1px solid #fecaca;
}

/* ─── Footer ─── */

.admin-footer {
  margin-top: auto;
  padding: 24px 0 16px;
  text-align: center;
}

.admin-footer p {
  font-size: 0.75rem;
  color: var(--c-text-muted);
  margin: 0;
}

/* ─── Responsive: Tablet+ ─── */

@media (min-width: 768px) {
  .admin-container {
    padding: 32px;
    max-width: 800px;
  }

  .admin-header h1 {
    font-size: 1.75rem;
  }

  .gateway-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .gateway-card {
    margin-bottom: 0;
  }

  .settings-actions {
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }

  .gateway-icon {
    width: 48px;
    height: 48px;
    font-size: 1.375rem;
  }
}

@media (min-width: 1024px) {
  .admin-container {
    max-width: 960px;
  }

  .gateway-list {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* ─── Accessibility ─── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}