@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #F6F5FB;
  --surface: #FFFFFF;
  --border: #E7E5F3;
  --border-strong: #D2CEEA;
  --text: #171426;
  --text-secondary: #625E77;
  --text-tertiary: #928DA8;

  --accent: #5B4FE8;
  --accent-hover: #4638D6;
  --accent-soft: #EEECFD;

  --amber: #D97706;
  --amber-soft: #FEF1E0;

  --danger: #E5484D;
  --danger-soft: #FDEBEC;

  --font-ui: 'Plus Jakarta Sans', 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --radius: 10px;
  --shadow-card: 0 1px 2px rgba(23, 20, 38, 0.06), 0 4px 16px rgba(23, 20, 38, 0.05);
  --card-bg: linear-gradient(180deg, #FFFFFF 0%, #FBFCFD 100%);
}

[data-theme="dark"] {
  --bg: #15121F;
  --surface: #1D1930;
  --border: #2E2846;
  --border-strong: #3D3560;
  --text: #EDEBFA;
  --text-secondary: #A79FC7;
  --text-tertiary: #7A7295;
  --accent-soft: #2A2450;
  --amber-soft: #3A2E1A;
  --danger-soft: #3A1E22;
  --card-bg: linear-gradient(180deg, #1D1930 0%, #211C38 100%);
  --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);
}

* { box-sizing: border-box; }

/* Thin, on-brand scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }
html { scrollbar-width: thin; scrollbar-color: var(--border-strong) var(--bg); }

#topLoadingBar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #7A6FF0, var(--accent), var(--accent-hover));
  box-shadow: 0 0 8px rgba(91,79,232,0.6);
  z-index: 9999;
  transition: width 0.25s ease, opacity 0.3s ease;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Visible keyboard focus everywhere, without an outline on mouse clicks. */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Lightweight CSS-only help tooltip: <span class="help-tip" data-tip="...">?</span> */
.help-tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--border-strong);
  color: var(--text-secondary);
  font-size: 10px;
  font-weight: 700;
  cursor: help;
  position: relative;
  margin-left: 4px;
  vertical-align: middle;
}
.help-tip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--surface);
  font-size: 12px;
  font-weight: 500;
  padding: 7px 10px;
  border-radius: 6px;
  white-space: normal;
  width: 220px;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s ease;
  z-index: 50;
}
.help-tip:hover::after, .help-tip:focus-visible::after { opacity: 1; }

h1, h2, h3 {
  font-family: var(--font-ui);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

/* Time values always render in monospace with tabular figures —
   a consistent visual signature for precision timestamps, and a
   deliberate cue that this is an exact, non-ambiguous value. */
.time, time, .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.tz-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 3px;
  padding: 2px 6px;
  letter-spacing: 0.02em;
}

button {
  font-family: var(--font-ui);
  cursor: pointer;
}

input {
  font-family: var(--font-ui);
}

a { color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.12s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #7A6FF0 0%, var(--accent) 55%, var(--accent-hover) 100%);
  color: #fff;
  box-shadow: 0 2px 5px rgba(91, 79, 232, 0.32), inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(91, 79, 232, 0.4), 0 0 0 4px rgba(91, 79, 232, 0.12), inset 0 1px 0 rgba(255,255,255,0.18); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { background: var(--border-strong); box-shadow: none; cursor: not-allowed; transform: none; }

.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(26, 37, 48, 0.05);
}
.btn-secondary:hover { border-color: var(--text-secondary); box-shadow: 0 2px 5px rgba(26, 37, 48, 0.1); transform: translateY(-1px); }
.btn-secondary:active { transform: translateY(0); }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.field input {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 15px;
  color: var(--text);
  background: var(--surface);
}

.field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.error-banner {
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13.5px;
  margin-bottom: 16px;
  display: none;
}
.error-banner.visible { display: block; }

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  padding: 3px 10px;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.5);
}
.status-approved { background: linear-gradient(135deg, #E4E1FA, var(--accent-soft)); color: var(--accent-hover); }
.status-pending { background: linear-gradient(135deg, #FCEFDA, var(--amber-soft)); color: var(--amber); }
.status-rejected { background: linear-gradient(135deg, #FADEE1, var(--danger-soft)); color: var(--danger); }

.overlap-warning-banner {
  background: var(--amber-soft);
  color: var(--amber);
  border: 1px solid #F0D9A8;
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.overlap-warning-banner svg { flex-shrink: 0; margin-top: 1px; }

/* Shared modal (used across every page: shift editor, change password, etc.) */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26, 37, 48, 0.45);
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.modal-backdrop.open { display: flex; opacity: 1; }
.modal-card {
  background: var(--card-bg);
  border-radius: 10px;
  width: 100%;
  max-width: 420px;
  padding: 24px;
  box-shadow: 0 12px 36px rgba(26, 37, 48, 0.22);
  transform: scale(0.97) translateY(4px);
  transition: transform 0.15s ease;
}
.modal-backdrop.open .modal-card { transform: scale(1) translateY(0); }
.modal-card h2 { font-size: 17px; margin-bottom: 18px; }

/* ---------- Toasts (replace browser alert()) ---------- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}
.toast {
  background: var(--text);
  color: #fff;
  font-size: 13.5px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26,37,48,0.25);
  max-width: 340px;
  display: flex;
  align-items: center;
  gap: 9px;
  opacity: 0;
  transform: translateY(8px) scale(0.9);
  transition: opacity 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.toast.show { opacity: 1; transform: translateY(0) scale(1); }
.toast-icon { display: inline-flex; flex-shrink: 0; }
.toast-success { background: linear-gradient(135deg, #7A6FF0, var(--accent-hover)); }
.toast-error { background: linear-gradient(135deg, #C94F5D, var(--danger)); }

/* ---------- Loading skeletons ---------- */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg) 37%, var(--border) 63%);
  background-size: 400% 100%;
  animation: skeletonShimmer 1.4s ease infinite;
  border-radius: 6px;
}
@keyframes skeletonShimmer {
  0% { background-position: 100% 50%; }
  100% { background-position: 0 50%; }
}
.skeleton-row { display: flex; align-items: center; gap: 10px; padding: 10px 0; }
.skeleton-avatar { width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0; }
.skeleton-line { height: 12px; border-radius: 4px; }

/* Role-specific colors, distinct per role for quick scanning */
.role-chip { display: inline-flex; align-items: center; font-size: 12px; font-weight: 600; border-radius: 999px; padding: 3px 10px; text-transform: capitalize; box-shadow: inset 0 1px 1px rgba(255,255,255,0.5); }
.role-chip-admin { background: linear-gradient(135deg, #E4E1FA, var(--accent-soft)); color: var(--accent-hover); }
.role-chip-ops { background: linear-gradient(135deg, #DCE8FA, #E7EFFA); color: #3B6FB6; }
.role-chip-radiologist { background: linear-gradient(135deg, #E3DAF3, #EFEAF7); color: #6B4FA0; }