@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ─── Reset & Variables ──────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-base: #0d1117;
  --bg-surface: #161b22;
  --bg-card: #1c2433;
  --bg-hover: #21283a;
  --border: #30363d;
  --border-light: #3d4a5c;
  --accent: #58a6ff;
  --accent-glow: rgba(88, 166, 255, 0.15);
  --accent-dark: #1f6feb;
  --success: #3fb950;
  --success-glow: rgba(63, 185, 80, 0.15);
  --warning: #d29922;
  --danger: #f85149;
  --danger-glow: rgba(248, 81, 73, 0.15);
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
  --transition: 0.2s ease;
}

html {
  font-size: 15px;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ─── Scrollbar ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 3px;
}

/* ─── Layout ─────────────────────────────────────────────────────────────── */
.page-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Navbar ─────────────────────────────────────────────────────────────── */
.navbar {
  background: rgba(22, 27, 34, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 32px;
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.navbar-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #a371f7);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 18px;
}

.navbar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.navbar-title span {
  color: var(--accent);
}

.navbar-nav {
  display: flex;
  gap: 4px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.nav-link.active {
  color: var(--accent);
}

.btn-logout {
  color: var(--danger);
  border: 1px solid transparent;
  cursor: pointer;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  background: none;
  transition: all var(--transition);
}

.btn-logout:hover {
  background: var(--danger-glow);
  border-color: var(--danger);
}

/* ─── Page Header ────────────────────────────────────────────────────────── */
.page-header {
  padding: 40px 32px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--text-secondary);
  margin-top: 6px;
  font-size: 0.9rem;
}

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.card-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

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

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

.btn-primary:hover:not(:disabled) {
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}

.btn-success {
  background: #1a4d2e;
  color: var(--success);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.btn-success:hover:not(:disabled) {
  background: var(--success-glow);
  border-color: var(--success);
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--danger-glow);
  border-color: var(--danger);
}

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

.btn-outline:hover:not(:disabled) {
  color: var(--text-primary);
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.8rem;
}

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  cursor: pointer;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

/* ─── Toggle ─────────────────────────────────────────────────────────────── */
.toggle-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toggle {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 26px;
}

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

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-light);
  border-radius: 13px;
  transition: var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
}

.toggle input:checked+.toggle-slider {
  background: var(--accent-dark);
}

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

.toggle-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.toggle input:checked~.toggle-label {
  color: var(--accent);
}

/* ─── Table ──────────────────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  min-width: 960px;
  border-collapse: collapse;
  font-size: 0.85rem;
}

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

th {
  padding: 8px 12px;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

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

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

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

.td-hash {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: help;
}

.td-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* ─── Badge ──────────────────────────────────────────────────────────────── */
.badge {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-purple {
  background: rgba(163, 113, 247, 0.2);
  color: #a371f7;
  border: 1px solid rgba(163, 113, 247, 0.3);
}

.badge-blue {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
  border: 1px solid rgba(88, 166, 255, 0.3);
}

.badge-orange {
  background: rgba(240, 136, 62, 0.15);
  color: #f0883e;
  border: 1px solid rgba(240, 136, 62, 0.3);
}

.badge-gray {
  background: rgba(139, 148, 158, 0.15);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.badge-green {
  background: var(--success-glow);
  color: var(--success);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.badge-red {
  background: var(--danger-glow);
  color: var(--danger);
  border: 1px solid rgba(248, 81, 73, 0.3);
}

/* ─── Status dot ─────────────────────────────────────────────────────────── */
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
}

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

.status-dot.active::before {
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

.status-dot.inactive::before {
  background: var(--text-muted);
}

/* ─── Drag & Drop Zone ───────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.drop-zone.has-file {
  border-color: var(--success);
  background: var(--success-glow);
  border-style: solid;
}

.drop-zone-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.drop-zone-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.drop-zone-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

/* ─── Progress bar ───────────────────────────────────────────────────────── */
.progress-wrap {
  background: var(--bg-surface);
  border-radius: 20px;
  height: 8px;
  overflow: hidden;
  margin: 12px 0;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-dark), var(--accent));
  border-radius: 20px;
  width: 0;
  transition: width 0.3s ease;
}

.progress-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ─── Login page ─────────────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(88, 166, 255, 0.07) 0%, transparent 60%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  padding: 48px 40px;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent), #a371f7);
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 16px;
  box-shadow: 0 8px 32px rgba(88, 166, 255, 0.3);
}

.login-logo h1 {
  font-size: 1.4rem;
  font-weight: 700;
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 4px;
}

/* ─── Alert / error ──────────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.875rem;
  display: none;
}

.alert-danger {
  background: var(--danger-glow);
  color: var(--danger);
  border: 1px solid rgba(248, 81, 73, 0.3);
}

.alert-success {
  background: var(--success-glow);
  color: var(--success);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

/* ─── Modal ──────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}

.modal-lg {
  max-width: 860px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-column {
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-footer {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 28px;
}

/* ─── Empty state ────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 0.875rem;
}

/* ─── Toast ──────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  max-width: 360px;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.35s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success {
  background: #1a3a22;
  color: var(--success);
  border: 1px solid rgba(63, 185, 80, 0.4);
}

.toast-error {
  background: #3d1a1a;
  color: var(--danger);
  border: 1px solid rgba(248, 81, 73, 0.4);
}

/* ─── Loading spinner ────────────────────────────────────────────────────── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-light);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-row td {
  text-align: center;
  padding: 48px;
  color: var(--text-secondary);
}

/* ─── Stats row ──────────────────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-card .stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }

  .page-header {
    padding: 24px 16px 16px;
  }

  .card {
    padding: 20px 16px;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ─── Info box ───────────────────────────────────────────────────────────── */
.info-box {
  background: rgba(88, 166, 255, 0.08);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.info-box code {
  background: var(--bg-surface);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
  font-size: 0.8rem;
}