@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --bg-primary: #0b1020;
  --bg-card: rgba(255,255,255,0.03);
  --bg-darker: rgba(255,255,255,0.05);
  --border-color: rgba(255,255,255,0.08);
  --border-light: rgba(255,255,255,0.1);
  --text-primary: #f1f5f9;
  --text-muted: rgba(255,255,255,0.5);
  --text-dim: rgba(255,255,255,0.25);
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #a5b4fc;
  --accent: #22d3ee;
  --danger: #fb7185;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.bg-darker {
  background: var(--bg-darker) !important;
}

.border-white-10 {
  border-color: var(--border-light) !important;
}

.text-cyan {
  color: var(--accent);
}

.text-white-25 {
  color: var(--text-dim);
}

.text-white-50 {
  color: var(--text-muted);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
}

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

.btn-outline-light {
  border-color: var(--border-light);
  color: var(--text-muted);
}

.btn-outline-light:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(99,102,241,0.1);
}

.btn-outline-danger {
  border-color: rgba(251,113,133,0.3);
  color: var(--danger);
}

.btn-outline-danger:hover {
  background: rgba(251,113,133,0.1);
  border-color: var(--danger);
}

.form-control, .form-select {
  background: rgba(255,255,255,0.04);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
  background: rgba(255,255,255,0.06);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
  color: var(--text-primary);
}

.form-control::placeholder {
  color: rgba(255,255,255,0.2);
}

.card {
  border-radius: 14px;
  backdrop-filter: blur(4px);
}

.modal-content {
  border-radius: 16px;
}

.modal-header {
  border-bottom-color: var(--border-color);
}

/* Pin inputs */
.pin-input {
  width: 56px;
  height: 64px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  background: rgba(255,255,255,0.03);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pin-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

/* Data table */
.data-table th {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  padding: 10px 12px;
}

.data-table td {
  padding: 10px 12px;
  font-size: 0.85rem;
  vertical-align: middle;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.data-table tbody tr:hover {
  background: rgba(255,255,255,0.02);
}

.small-cell {
  font-size: 0.75rem;
}

/* Editable admin cells */
.editable-cell {
  cursor: text;
  border-radius: 4px;
  padding: 4px 6px;
  outline: none;
  transition: background 0.15s;
}

.editable-cell:hover {
  background: rgba(99,102,241,0.08);
}

.editable-cell:focus {
  background: rgba(255,255,255,0.08);
  box-shadow: inset 0 0 0 1px var(--primary);
}

/* Copy icon button */
.icon-btn {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid transparent;
  color: var(--text-dim);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.icon-btn:hover {
  background: rgba(99,102,241,0.12);
  color: var(--primary-light);
}

/* Pulse animation */
.pulse-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 6px;
  vertical-align: middle;
  animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* Session cards */
.session-card {
  border-radius: 12px;
  transition: border-color 0.15s;
}

.session-card:hover {
  border-color: rgba(99,102,241,0.3);
}

/* Buttons inside tables */
.table .btn-sm {
  padding: 4px 10px;
  font-size: 0.78rem;
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.2);
}

/* Responsive */
@media (max-width: 576px) {
  .container { padding-left: 12px; padding-right: 12px; }

  .pin-input {
    width: 48px;
    height: 54px;
    font-size: 1.25rem;
  }

  .data-table { font-size: 0.8rem; }
  .data-table th, .data-table td { padding: 8px; }

  .editable-cell { font-size: 0.8rem; }

  .table-responsive {
    margin-left: -12px;
    margin-right: -12px;
    width: calc(100% + 24px);
  }
}