/* ══════════════════════════════════════════════════════════════
   N7SIX web tools — shared design system (tokens + generic components).
   This is a standalone copy: keep it identical across k5viewer / uvtools2
   so the tools stay visually aligned. Loaded BEFORE the app's own stylesheet:
       <link href="css/theme.css" rel="stylesheet">
══════════════════════════════════════════════════════════════ */

:root {
  --bg: #fafbfc;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --error: #ef4444;
  --error-hover: #b22222;
  --radius: 8px;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg:
    0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-header:
    0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  /* Monospace stack for technical/numeric UI (status, codes, tables) */
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', ui-monospace, monospace;
}

[data-theme='dark'] {
  --bg: #0f172a;
  --surface: #1e293b;
  --border: #334155;
  --text: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --error: #ef4444;
  --error-hover: #b22222;
}

/* ── Reset & base ── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  transition:
    background 0.2s,
    color 0.2s;
}

/* ══════════════════════════════════════════════════════════════
   Buttons — brushed-aluminium in light, premium alu in dark
══════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  height: 36px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  /* Light: alu clair */
  background: linear-gradient(160deg, #f9fafb 0%, #e5e7eb 100%);
  border: 1px solid #9ca3af;
  color: #374151;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.btn:hover:not(:disabled) {
  background: linear-gradient(160deg, #fff 0%, #f3f4f6 100%);
  border-color: #2563eb;
  color: #1d4ed8;
  transform: translateY(-1px);
  box-shadow:
    0 3px 8px rgba(0, 0, 0, 0.15),
    0 0 6px rgba(37, 99, 235, 0.15),
    inset 0 1px 0 #fff;
}

.btn:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
  background: linear-gradient(160deg, #e5e7eb 0%, #d1d5db 100%);
}

.btn.primary {
  background: linear-gradient(160deg, #3b82f6 0%, #2563eb 100%);
  border-color: #2563eb;
  color: #fff;
  box-shadow:
    0 2px 6px rgba(37, 99, 235, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn.primary:hover:not(:disabled) {
  background: linear-gradient(160deg, #60a5fa 0%, #3b82f6 100%);
  border-color: #3b82f6;
  color: #fff;
  box-shadow:
    0 3px 10px rgba(37, 99, 235, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn.danger {
  background: linear-gradient(160deg, #f87171 0%, #ef4444 100%);
  border-color: #dc2626;
  color: #fff;
  box-shadow:
    0 2px 6px rgba(239, 68, 68, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn.danger:hover:not(:disabled) {
  background: linear-gradient(160deg, #fca5a5 0%, #f87171 100%);
  border-color: #ef4444;
  color: #fff;
  box-shadow:
    0 3px 10px rgba(239, 68, 68, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

/* Dark mode overrides */
[data-theme='dark'] .btn {
  background: linear-gradient(170deg, #2e3d50 0%, #1e2d3d 60%, #253040 100%);
  border: 1px solid #3a4d62;
  color: #cbd5e1;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
[data-theme='dark'] .btn:hover:not(:disabled) {
  background: linear-gradient(170deg, #3d5068 0%, #2a3d52 100%);
  border-color: #4a6a8a;
  color: #e2e8f0;
  transform: translateY(-1px);
  box-shadow:
    0 4px 10px rgba(0, 0, 0, 0.5),
    0 0 8px rgba(59, 130, 246, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
[data-theme='dark'] .btn:active {
  transform: translateY(1px);
  box-shadow:
    0 0 4px rgba(0, 0, 0, 0.5),
    inset 0 2px 4px rgba(0, 0, 0, 0.3);
  background: linear-gradient(170deg, #1e2d3d 0%, #253040 100%);
}
[data-theme='dark'] .btn.primary {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  border-color: #3b82f6;
  color: #fff;
  box-shadow:
    0 2px 8px rgba(59, 130, 246, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
[data-theme='dark'] .btn.primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  box-shadow:
    0 4px 12px rgba(59, 130, 246, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}
[data-theme='dark'] .btn.danger {
  background: linear-gradient(170deg, #7f1d1d 0%, #3d0000 100%);
  border-color: #dc2626;
  color: #fca5a5;
  box-shadow:
    0 2px 8px rgba(239, 68, 68, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
[data-theme='dark'] .btn.danger:hover:not(:disabled) {
  background: linear-gradient(170deg, #991b1b 0%, #450a0a 100%);
  border-color: #ef4444;
  color: #fecaca;
  box-shadow:
    0 4px 12px rgba(239, 68, 68, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════════════════════════════
   Select — matches the alu button treatment
══════════════════════════════════════════════════════════════ */
select {
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  appearance: none;
  -webkit-appearance: none;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%239ca3af'/%3E%3C/svg%3E")
      no-repeat right 10px center,
    linear-gradient(160deg, #f9fafb 0%, #e5e7eb 100%);
  border: 1px solid #9ca3af;
  color: #374151;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  padding-right: 28px;
}

select:hover {
  border-color: #2563eb;
  color: #1d4ed8;
  box-shadow:
    0 3px 8px rgba(0, 0, 0, 0.15),
    0 0 6px rgba(37, 99, 235, 0.15),
    inset 0 1px 0 #fff;
}

select:focus {
  outline: none;
  border-color: #2563eb;
}

[data-theme='dark'] select {
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2364748b'/%3E%3C/svg%3E")
      no-repeat right 10px center,
    linear-gradient(170deg, #2e3d50 0%, #1e2d3d 60%, #253040 100%);
  border: 1px solid #3a4d62;
  color: #cbd5e1;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

[data-theme='dark'] select:hover {
  border-color: #4a6a8a;
  color: #e2e8f0;
  box-shadow:
    0 4px 10px rgba(0, 0, 0, 0.5),
    0 0 8px rgba(59, 130, 246, 0.15);
}