/* ===== CSS Variables & Reset ===== */
:root {
  --bg-primary: #0a0b0f;
  --bg-secondary: #12131a;
  --bg-card: #181a24;
  --bg-card-hover: #1e2030;
  --bg-input: #1a1c28;
  --border: #2a2d3e;
  --border-focus: #6366f1;
  --text-primary: #e4e5f1;
  --text-secondary: #8b8ea8;
  --text-muted: #5c5f7a;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --blue: #3b82f6;
  --blue-bg: rgba(59, 130, 246, 0.1);
  --yellow: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== Screen Management ===== */
.screen {
  display: none;
}

.screen.active {
  display: block;
}

/* ===== Login Screen ===== */
.login-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
}

.login-container::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.login-logo {
  text-align: center;
  margin-bottom: 40px;
  position: relative;
}

.logo-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: white;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.login-logo h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 6px;
}

#login-form {
  width: 100%;
  max-width: 380px;
  position: relative;
}

/* ===== Input Groups ===== */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.input-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.input-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
  transition: var(--transition);
  outline: none;
}

.input-group input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-group input::placeholder {
  color: var(--text-muted);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-full {
  width: 100%;
  justify-content: center;
  padding: 14px 20px;
  font-size: 15px;
  margin-top: 8px;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 12px;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.btn-icon.danger:hover {
  color: var(--red);
  background: var(--red-bg);
}

/* ===== Error Message ===== */
.error-msg {
  color: var(--red);
  font-size: 13px;
  text-align: center;
  margin-top: 12px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--red-bg);
}

.hidden {
  display: none !important;
}

/* ===== Header ===== */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.header-left h2 {
  font-size: 18px;
  font-weight: 600;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--green-bg);
  color: var(--green);
  font-size: 13px;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ===== Main Content ===== */
main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ===== Stats Row ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.stat-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.blue {
  background: var(--blue-bg);
  color: var(--blue);
}

.stat-icon.green {
  background: var(--green-bg);
  color: var(--green);
}

.stat-icon.red {
  background: var(--red-bg);
  color: var(--red);
}

.stat-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.card-header h3 {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

.card-header h3 svg {
  color: var(--accent);
}

/* ===== Add Form ===== */
.add-form {
  padding: 20px;
}

.form-row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.arrow-separator {
  flex: 0 0 auto;
  color: var(--text-muted);
  padding-bottom: 8px;
  display: flex;
  align-items: center;
}

/* ===== Table ===== */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead tr {
  background: var(--bg-secondary);
}

th {
  padding: 12px 20px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  padding: 14px 20px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

tbody tr {
  transition: var(--transition);
}

tbody tr:hover {
  background: var(--bg-card-hover);
}

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

.domain-cell {
  font-weight: 500;
  color: var(--text-primary);
}

.target-cell {
  color: var(--accent-hover);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.target-cell a {
  color: inherit;
  text-decoration: none;
}

.target-cell a:hover {
  text-decoration: underline;
}

/* ===== Toggle Switch ===== */
.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

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

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-muted);
  top: 2px;
  left: 2px;
  transition: var(--transition);
}

.toggle input:checked + .toggle-slider {
  background: var(--green);
  border-color: var(--green);
}

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

/* ===== Actions Cell ===== */
.actions-cell {
  display: flex;
  gap: 4px;
}

/* ===== Empty State ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--text-muted);
  gap: 8px;
}

.empty-state p {
  font-size: 16px;
  font-weight: 500;
}

.empty-state span {
  font-size: 13px;
}

/* ===== API Info ===== */
.api-info {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.api-endpoint {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.method {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-width: 44px;
  text-align: center;
}

.method.get {
  background: var(--green-bg);
  color: var(--green);
}

.method.post {
  background: var(--blue-bg);
  color: var(--blue);
}

.method.put {
  background: rgba(245, 158, 11, 0.1);
  color: var(--yellow);
}

.method.delete {
  background: var(--red-bg);
  color: var(--red);
}

.api-endpoint code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  color: var(--text-primary);
  font-size: 13px;
}

.api-desc {
  color: var(--text-muted);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  font-size: 14px;
  color: var(--text-primary);
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
}

.toast.success {
  border-left: 3px solid var(--green);
}

.toast.error {
  border-left: 3px solid var(--red);
}

@keyframes slideIn {
  from {
    transform: translateX(120%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  animation: modalIn 0.25s ease-out;
}

@keyframes modalIn {
  from {
    transform: scale(0.95) translateY(10px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

#edit-form {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .stats-row {
    grid-template-columns: 1fr;
  }

  .form-row {
    flex-direction: column;
    align-items: stretch;
  }

  .arrow-separator {
    display: none;
  }

  .form-row .btn {
    width: 100%;
    justify-content: center;
  }

  main {
    padding: 16px;
  }

  header {
    padding: 12px 16px;
  }

  th, td {
    padding: 10px 14px;
    font-size: 13px;
  }

  .target-cell {
    max-width: 150px;
  }

  .api-endpoint {
    flex-wrap: wrap;
  }

  .api-desc {
    width: 100%;
    margin-left: 54px;
  }
}

@media (max-width: 480px) {
  .stat-card {
    padding: 16px;
  }

  .stat-value {
    font-size: 22px;
  }

  .header-left h2 {
    font-size: 15px;
  }

  .status-badge {
    font-size: 12px;
    padding: 4px 10px;
  }
}