/* ═══════════════════════════════════════════════════════
   FAS23 Reporter — unified theme tokens
   (mirrors example_files/frontend_example/styling.css)
   ═══════════════════════════════════════════════════════ */

:root {
  --b-bg:           rgb(22, 22, 22);
  --b-surface:      rgb(28, 30, 36);
  --b-elevated:     rgb(40, 42, 50);
  --b-border:       rgb(55, 57, 65);
  --b-text:         rgb(220, 220, 224);
  --b-text-dim:     rgb(145, 148, 160);
  --b-accent:       rgb(66, 133, 244);
  --b-accent-h:     rgb(95, 155, 255);
  --b-radius:       4px;
  --b-radius-lg:    8px;
  --b-row-hover:    rgba(66, 133, 244, 0.06);
  --b-row-active:   rgba(66, 133, 244, 0.1);
  --b-overlay:      rgba(22, 22, 22, 0.65);
  --b-nav-bg:       rgb(36, 36, 36);
  --b-shadow:       0 4px 16px rgba(0, 0, 0, 0.5);
  --b-success:      rgb(100, 239, 90);
  --b-success-bg:   rgb(15, 60, 15);
  --b-error:        rgb(255, 180, 180);
  --b-error-bg:     rgb(80, 15, 15);
  --b-warn:         rgb(233, 186, 97);
  --b-warn-bg:      rgb(111, 62, 3);
  --b-brand:        rgb(20, 110, 180);
  --b-brand-h:      rgb(40, 135, 210);
  --topbar-h:       48px;
  --font:           'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

[data-theme="light"] {
  --b-bg:           rgb(245, 246, 248);
  --b-surface:      rgb(255, 255, 255);
  --b-elevated:     rgb(238, 240, 244);
  --b-border:       rgb(210, 214, 222);
  --b-text:         rgb(28, 32, 40);
  --b-text-dim:     rgb(98, 105, 120);
  --b-accent:       rgb(36, 102, 215);
  --b-accent-h:     rgb(58, 125, 240);
  --b-row-hover:    rgba(36, 102, 215, 0.07);
  --b-row-active:   rgba(36, 102, 215, 0.13);
  --b-overlay:      rgba(245, 246, 248, 0.7);
  --b-nav-bg:       rgb(255, 255, 255);
  --b-shadow:       0 4px 16px rgba(20, 30, 50, 0.12);
  --b-success:      rgb(20, 95, 20);
  --b-success-bg:   rgb(214, 245, 214);
  --b-error:        rgb(140, 25, 25);
  --b-error-bg:     rgb(255, 213, 213);
  --b-warn:         rgb(120, 70, 8);
  --b-warn-bg:      rgb(255, 233, 196);
}

/* ── Reset ───────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--b-text);
  background: var(--b-bg);
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s, color 0.2s;
}
input, select, button { font-family: inherit; font-size: inherit; }

#app { display: flex; flex-direction: column; height: 100vh; }
#main-app { display: flex; flex-direction: column; flex: 1; min-height: 0; }

/* ── Top bar ─────────────────────────────────────── */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-h);
  padding: 0 1rem;
  background: var(--b-nav-bg);
  border-bottom: 1px solid var(--b-border);
  flex-shrink: 0;
  z-index: 100;
  position: relative;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}
.brand-logo {
  height: 1.6rem;
  width: auto;
  display: block;
}
.brand-text {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.2px;
  color: rgb(80, 150, 255);
  transition: color 0.15s ease;
}
.brand:hover .brand-text { color: rgb(120, 175, 255); }

/* User chip — discreet, not a "badge" */
.user-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
  color: var(--b-text-dim);
  border-radius: var(--b-radius);
  transition: color 0.15s, background 0.15s;
}
.user-chip:hover { color: var(--b-text); background: var(--b-elevated); }
.user-chip-email {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 22ch;
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--b-elevated);
  border: 1px solid var(--b-border);
  color: var(--b-text);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  font-size: 0.95rem;
  user-select: none;
  padding: 0;
}
.theme-toggle:hover {
  background: var(--b-accent);
  color: #fff;
  border-color: var(--b-accent);
}
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: inline; }
[data-theme="light"] .theme-toggle .icon-sun  { display: inline; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* Logout (icon button using signout.png) */
.logout-btn {
  background: none;
  border: 1px solid var(--b-border);
  color: var(--b-text-dim);
  border-radius: var(--b-radius);
  width: 2rem;
  height: 2rem;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}
.logout-btn:hover {
  background: var(--b-elevated);
  border-color: var(--b-accent);
}
.logout-btn img {
  width: 1.05rem;
  height: 1.05rem;
  object-fit: contain;
}

/* ── Loading bar ─────────────────────────────────── */

.load-bar {
  padding: 0.65rem 1rem 0.5rem;
  flex-shrink: 0;
  z-index: 10;
  position: relative;
  background: var(--b-surface);
  border-bottom: 1px solid var(--b-border);
  transition: opacity 0.4s ease, max-height 0.4s ease, padding 0.4s ease;
  max-height: 5rem;
  overflow: hidden;
}
.load-bar.done {
  opacity: 0;
  max-height: 0;
  padding: 0 1rem;
  pointer-events: none;
  border-bottom: none;
}
.load-bar-track {
  height: 3px;
  background: var(--b-elevated);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.45rem;
}
.load-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--b-accent);
  border-radius: 3px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.load-bar-steps {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.load-step {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--b-elevated);
  color: var(--b-text-dim);
  transition: all 0.3s ease;
}
.load-step.active {
  background: var(--b-accent);
  color: #fff;
}
.load-step.done {
  background: var(--b-success-bg);
  color: var(--b-success);
}
.load-step.done::before { content: '✓ '; }
.load-step.error {
  background: var(--b-error-bg);
  color: var(--b-error);
}
.load-step.error::before { content: '✕ '; }

/* ── Main scroll area ────────────────────────────── */

.main-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  scroll-behavior: smooth;
  background: var(--b-bg);
}
.main-scroll::-webkit-scrollbar { width: 8px; }
.main-scroll::-webkit-scrollbar-track { background: transparent; }
.main-scroll::-webkit-scrollbar-thumb {
  background: var(--b-border);
  border-radius: 4px;
}
.main-scroll::-webkit-scrollbar-thumb:hover { background: var(--b-text-dim); }

/* ── Dashboard ───────────────────────────────────── */

.dashboard {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}
.dashboard-header { margin-bottom: 1.5rem; }
.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--b-text);
  letter-spacing: -0.2px;
}
.section-sub {
  margin-top: 0.2rem;
  font-size: 0.82rem;
  color: var(--b-text-dim);
}

/* ── Card grid ───────────────────────────────────── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.65rem;
}

.grid-loading {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 3rem 1rem;
  color: var(--b-text-dim);
  font-size: 0.82rem;
}

/* Report cards — flat, compact, uniform */
.report-card {
  background: var(--b-surface);
  border: 1px solid var(--b-border);
  border-radius: var(--b-radius-lg);
  padding: 0.95rem 1rem;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, transform 0.12s;
  user-select: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.report-card:hover {
  background: var(--b-elevated);
  border-color: var(--b-accent);
}
.report-card:active { transform: translateY(1px); }

.card-icon {
  width: 2rem;
  height: 2rem;
  border-radius: var(--b-radius);
  background: var(--b-elevated);
  color: var(--b-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.card-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--b-text);
  letter-spacing: -0.1px;
}
.card-desc {
  font-size: 0.74rem;
  color: var(--b-text-dim);
  line-height: 1.35;
}
.card-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.15rem;
}
.card-tag {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  background: var(--b-elevated);
  color: var(--b-text-dim);
  border: 1px solid var(--b-border);
}

/* ── Config panel ────────────────────────────────── */

.config-panel {
  max-width: 700px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 3rem;
}
.config-panel.hidden { display: none; }

.config-back { margin-bottom: 0.85rem; }
.back-btn {
  background: none;
  border: none;
  color: var(--b-text-dim);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.25rem 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: color 0.12s;
}
.back-btn:hover { color: var(--b-accent); }

.config-hero {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  background: var(--b-surface);
  border: 1px solid var(--b-border);
  border-left: 3px solid var(--b-accent);
  border-radius: var(--b-radius-lg);
}
.hero-icon {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--b-radius);
  background: var(--b-elevated);
  color: var(--b-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.hero-text h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--b-text);
  letter-spacing: -0.2px;
}
.hero-text p {
  font-size: 0.78rem;
  color: var(--b-text-dim);
  margin-top: 0.1rem;
}

.config-card {
  background: var(--b-surface);
  border: 1px solid var(--b-border);
  border-radius: var(--b-radius-lg);
  overflow: hidden;
}
.config-card-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1rem;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--b-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--b-border);
  background: var(--b-elevated);
}
.config-card-icon { font-size: 0.85rem; }

/* ── Form fields ─────────────────────────────────── */

#config-form-area { padding: 1rem 1.2rem; }

.form-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.85rem;
}
.form-row:last-of-type { margin-bottom: 0; }
.form-row label {
  flex: 0 0 7rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--b-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: right;
}
.form-row .field { flex: 1; min-width: 0; }

.form-row input[type="text"],
.form-row input[type="date"],
.form-row select {
  width: 100%;
  height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid var(--b-border);
  border-radius: var(--b-radius);
  background: var(--b-elevated);
  color: var(--b-text);
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.15s;
}
.form-row input:focus,
.form-row select:focus { border-color: var(--b-accent); }

.form-row 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 24 24' fill='none' stroke='%2391949d' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.85);
  cursor: pointer;
}
[data-theme="light"] input[type="date"]::-webkit-calendar-picker-indicator {
  filter: none;
}

/* Mode buttons (FlightDiff) */
.mode-group { display: flex; gap: 0.3rem; }
.mode-btn {
  height: 2rem;
  padding: 0 0.85rem;
  border: 1px solid var(--b-border);
  border-radius: var(--b-radius);
  background: var(--b-elevated);
  color: var(--b-text-dim);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 600;
  transition: all 0.12s;
}
.mode-btn:hover { color: var(--b-text); border-color: var(--b-accent); }
.mode-btn.active {
  background: var(--b-accent);
  color: #fff;
  border-color: var(--b-accent);
}

/* Number stepper */
.week-stepper { display: flex; align-items: center; gap: 0.5rem; }
.week-stepper button {
  width: 2rem;
  height: 2rem;
  border-radius: var(--b-radius);
  border: 1px solid var(--b-border);
  background: var(--b-elevated);
  color: var(--b-text);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.12s;
}
.week-stepper button:hover { border-color: var(--b-accent); color: var(--b-accent); }
.week-stepper .week-val {
  min-width: 2.4rem;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--b-text);
}

/* ── Form actions / Export ───────────────────────── */

.form-actions {
  margin-top: 1.25rem;
  display: flex;
  gap: 0.6rem;
}
.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.4rem;
  border: none;
  border-radius: var(--b-radius);
  background: var(--b-accent);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background 0.15s;
  position: relative;
}
.btn-export:hover { background: var(--b-accent-h); }
.btn-export:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-export.loading .btn-label { visibility: hidden; }
.btn-export.loading .btn-spinner {
  display: flex;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
}
.btn-export .btn-spinner { display: none; }

/* ── Spinners ────────────────────────────────────── */

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.spinner-dark {
  border-color: var(--b-border);
  border-top-color: var(--b-accent);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Report status ───────────────────────────────── */

.report-status {
  margin-top: 1.25rem;
  padding: 0.85rem 1rem;
  background: var(--b-surface);
  border-radius: var(--b-radius-lg);
  border: 1px solid var(--b-border);
}
.report-status.hidden { display: none; }
.status-content { display: flex; flex-direction: column; gap: 0.7rem; }
.status-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--b-text);
  font-weight: 600;
  font-size: 0.85rem;
}
.status-icon { font-size: 1rem; }
.status-bar-track {
  height: 4px;
  background: var(--b-elevated);
  border-radius: 4px;
  overflow: hidden;
}
.status-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--b-accent);
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.status-steps { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.status-step {
  font-size: 0.66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--b-elevated);
  color: var(--b-text-dim);
  transition: all 0.3s ease;
}
.status-step.active { background: var(--b-accent); color: #fff; }
.status-step.done { background: var(--b-success-bg); color: var(--b-success); }
.status-step.done::before { content: '✓ '; }
.status-step.error { background: var(--b-error-bg); color: var(--b-error); }

/* ── Toasts ──────────────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  display: flex;
  flex-direction: column-reverse;
  gap: 0.5rem;
  z-index: 9999;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-radius: var(--b-radius);
  background: var(--b-surface);
  color: var(--b-text);
  font-size: 0.8rem;
  font-weight: 500;
  box-shadow: var(--b-shadow);
  border: 1px solid var(--b-border);
  pointer-events: auto;
  max-width: 22rem;
  animation: toastIn 0.25s ease;
}
.toast.success { border-left: 3px solid var(--b-success); }
.toast.error   { border-left: 3px solid var(--b-error); }
.toast.info    { border-left: 3px solid var(--b-accent); }
.toast-icon { font-size: 0.9rem; flex-shrink: 0; }
.toast.leaving { animation: toastOut 0.2s ease forwards; }
@keyframes toastIn  { from { opacity: 0; transform: translateY(8px); } }
@keyframes toastOut { to   { opacity: 0; transform: translateY(-6px); } }

/* ── Responsive ──────────────────────────────────── */

@media (max-width: 768px) {
  .dashboard { padding: 1.25rem 0.85rem 2rem; }
  .card-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .config-panel { padding: 0.85rem 0.85rem 2rem; }
  .config-hero { flex-direction: column; text-align: center; padding: 1rem; }
  .form-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; }
  .form-row label { flex: none; text-align: left; }
  .user-chip-email { max-width: 12ch; }
}
@media (max-width: 500px) {
  .card-grid { grid-template-columns: 1fr; }
  .brand-text { display: none; }
}

/* ── Utility ─────────────────────────────────────── */

.hidden { display: none !important; }
.fade-in { animation: fadeIn 0.2s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}