/* TrimLab global navigation + appearance layer */
:root {
  --aw-bg: #f4f7fa;
  --aw-surface: #ffffff;
  --aw-surface-2: #fafcfd;
  --aw-surface-3: #f0f5f8;
  --aw-text: #172033;
  --aw-muted: #707b8b;
  --aw-border: #e1e8ef;
  --aw-shadow: rgba(20, 42, 63, .08);
  --aw-input: #ffffff;
  --aw-header-1: #071c2d;
  --aw-header-2: #123953;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #e8eef5;
  --muted: #9cafbd;
  --line: #2b3d4b;
  --card: #14222d;
  --surface: #0c151e;
  --blue-soft: #123247;
  --green-soft: #123325;
  --red-soft: #3b2025;
  --amber-soft: #382d17;

  --aw-bg: #0c151e;
  --aw-surface: #14222d;
  --aw-surface-2: #101c26;
  --aw-surface-3: #182935;
  --aw-text: #e8eef5;
  --aw-muted: #9cafbd;
  --aw-border: #2b3d4b;
  --aw-shadow: rgba(0, 0, 0, .28);
  --aw-input: #101c26;
  --aw-header-1: #061621;
  --aw-header-2: #102f43;
}

html[data-theme="dark"] body { background: var(--aw-bg) !important; color: var(--aw-text) !important; }
html[data-theme="dark"] .header { background: linear-gradient(110deg, var(--aw-header-1), var(--aw-header-2)) !important; }
html[data-theme="dark"] .hero { background: linear-gradient(180deg, #101c26 0%, #0c151e 100%) !important; border-color: var(--aw-border) !important; }
html[data-theme="dark"] .hero-text,
html[data-theme="dark"] .tool-heading p,
html[data-theme="dark"] .card-kicker,
html[data-theme="dark"] .field-note,
html[data-theme="dark"] .visual-note,
html[data-theme="dark"] .card-subtitle,
html[data-theme="dark"] .summary-label,
html[data-theme="dark"] .result-label,
html[data-theme="dark"] .comparison-line,
html[data-theme="dark"] .cp-legend,
html[data-theme="dark"] .scroll-hint { color: var(--aw-muted) !important; }

html[data-theme="dark"] .card,
html[data-theme="dark"] .tool-card,
html[data-theme="dark"] .category,
html[data-theme="dark"] .method-box,
html[data-theme="dark"] .assumption-box,
html[data-theme="dark"] .comparison-box,
html[data-theme="dark"] .summary-box,
html[data-theme="dark"] .summary-item,
html[data-theme="dark"] .result-box,
html[data-theme="dark"] .visual-card,
html[data-theme="dark"] .util-card,
html[data-theme="dark"] .report-card,
html[data-theme="dark"] .stability-visual,
html[data-theme="dark"] .airfoil-visual,
html[data-theme="dark"] .llt-visual,
html[data-theme="dark"] .plot-wrap,
html[data-theme="dark"] .notch-wrap,
html[data-theme="dark"] .drone-wrap,
html[data-theme="dark"] .chart-wrap { background: var(--aw-surface) !important; border-color: var(--aw-border) !important; box-shadow: 0 8px 28px var(--aw-shadow) !important; }

html[data-theme="dark"] .card-header:hover,
html[data-theme="dark"] .category-header:hover { background: rgba(255,255,255,.025) !important; }

html[data-theme="dark"] .input-section,
html[data-theme="dark"] .formula,
html[data-theme="dark"] .method-formula,
html[data-theme="dark"] .engineering-note,
html[data-theme="dark"] .disclaimer,
html[data-theme="dark"] .result-table-wrap,
html[data-theme="dark"] .report-settings,
html[data-theme="dark"] .preview-wrap { background: var(--aw-surface-2) !important; border-color: var(--aw-border) !important; }

html[data-theme="dark"] input,
html[data-theme="dark"] select,
html[data-theme="dark"] textarea,
html[data-theme="dark"] .viz-toggle,
html[data-theme="dark"] .button-secondary,
html[data-theme="dark"] .secondary-button,
html[data-theme="dark"] .secondary-action { background: var(--aw-input) !important; color: var(--aw-text) !important; border-color: var(--aw-border) !important; }

html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder { color: #718697 !important; }
html[data-theme="dark"] label,
html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4,
html[data-theme="dark"] .card-title,
html[data-theme="dark"] .summary-value,
html[data-theme="dark"] .result-value,
html[data-theme="dark"] .mode-name,
html[data-theme="dark"] .comparison-line strong { color: var(--aw-text) !important; }

html[data-theme="dark"] table,
html[data-theme="dark"] th,
html[data-theme="dark"] td { border-color: var(--aw-border) !important; color: var(--aw-text); }
html[data-theme="dark"] th { background: #182935 !important; color: #b7c7d4 !important; }
html[data-theme="dark"] tr:nth-child(even) td { background: rgba(255,255,255,.012); }
html[data-theme="dark"] .site-footer,
html[data-theme="dark"] .footer { background: #0a1219 !important; border-color: var(--aw-border) !important; color: var(--aw-muted) !important; }
html[data-theme="dark"] .site-footer a,
html[data-theme="dark"] .footer a { color: #8db8d1 !important; }

html[data-theme="dark"] .tool-card.disabled-card { opacity: .56; }
html[data-theme="dark"] .method-option label,
html[data-theme="dark"] .mode-option label { background: var(--aw-surface-2) !important; border-color: var(--aw-border) !important; color: var(--aw-text) !important; }
html[data-theme="dark"] .method-option input:checked + label,
html[data-theme="dark"] .mode-option input:checked + label { background: #123247 !important; border-color: #119fd8 !important; }

/* SVGs using shared classes */
html[data-theme="dark"] .plot-grid-line { stroke: #2b3d4b !important; }
html[data-theme="dark"] .plot-axis { stroke: #718697 !important; }
html[data-theme="dark"] .plot-label { fill: #9cafbd !important; }
html[data-theme="dark"] .wing-planform { fill: rgba(17,159,216,.12) !important; stroke: #7fa8bf !important; }
html[data-theme="dark"] .wake-line { stroke: #6fa8c3 !important; }
html[data-theme="dark"] .station-line { stroke: #526a79 !important; }

/* Header controls */
.header { position: relative; z-index: 50; }
.aw-header-group { display: flex; align-items: center; gap: 10px; }
.aw-header-actions { position: relative; display: flex; align-items: center; gap: 8px; }
.aw-icon-button {
  width: 42px; height: 42px; display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,.16); border-radius: 12px;
  background: rgba(255,255,255,.06); color: #fff; cursor: pointer;
  transition: .18s ease;
}
.aw-icon-button:hover { background: rgba(255,255,255,.12); transform: translateY(-1px); }
.aw-icon-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.aw-theme-sun, .aw-theme-moon { display: none; }
html[data-theme="light"] .aw-theme-sun { display: block; }
html[data-theme="dark"] .aw-theme-moon { display: block; }

.aw-menu-wrap { position: relative; }
.aw-menu {
  position: absolute; top: calc(100% + 12px); right: 0; width: min(340px, calc(100vw - 28px));
  padding: 10px; border: 1px solid var(--aw-border); border-radius: 16px;
  background: var(--aw-surface); color: var(--aw-text);
  box-shadow: 0 18px 55px rgba(0,0,0,.23); opacity: 0; visibility: hidden;
  transform: translateY(-7px) scale(.985); transform-origin: top right; transition: .16s ease;
  max-height: min(72vh, 690px); overflow: auto;
}
.aw-menu.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.aw-menu-title { padding: 9px 10px 7px; font-size: 11px; font-weight: 850; letter-spacing: 1.3px; text-transform: uppercase; color: var(--aw-muted); }
.aw-menu-section { margin-top: 5px; padding-top: 7px; border-top: 1px solid var(--aw-border); }
.aw-menu a,
.aw-menu button.aw-menu-row {
  width: 100%; display: flex; align-items: center; gap: 11px; padding: 10px 11px;
  border: 0; border-radius: 10px; background: transparent; color: var(--aw-text);
  text-decoration: none; text-align: left; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer;
}
.aw-menu a:hover,
.aw-menu button.aw-menu-row:hover { background: var(--aw-surface-3); }
.aw-menu a.aw-current { background: var(--blue-soft, #edf8fc); color: var(--blue-dark, #087ea7); }
.aw-menu svg { width: 18px; height: 18px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.aw-menu-meta { margin-left: auto; color: var(--aw-muted); font-size: 11px; font-weight: 700; }
.aw-menu-theme { justify-content: space-between !important; }
.aw-menu-theme-label { display: flex; align-items: center; gap: 11px; }
.aw-theme-switch { width: 38px; height: 22px; padding: 2px; border-radius: 999px; background: #c6d2da; transition: .18s ease; }
.aw-theme-switch::after { content: ""; display: block; width: 18px; height: 18px; border-radius: 50%; background: white; box-shadow: 0 1px 4px rgba(0,0,0,.24); transition: .18s ease; }
html[data-theme="dark"] .aw-theme-switch { background: #119fd8; }
html[data-theme="dark"] .aw-theme-switch::after { transform: translateX(16px); }

@media (max-width: 650px) {
  .header { padding-left: 18px !important; padding-right: 18px !important; }
  .aw-header-group { margin-left: auto; }
  .aw-header-actions { gap: 6px; }
  .aw-icon-button { width: 40px; height: 40px; }
}

/* =========================================================
   TrimLab reusable tool shell
   Header, sidebar, tool heading and footer are generated by
   tool-shell.js for every engineering tool page.
   ========================================================= */
trimlab-tool-shell { display: block; }
.tl-global-header .brand { color: #fff; text-decoration: none; gap: 0 !important; }
.header .brand { gap: 0 !important; }
.brand .tl-brand-trim,
.brand .tl-brand-lab { display: inline; margin: 0; padding: 0; }
.brand .tl-brand-trim { color: #fff !important; }
.brand .tl-brand-lab { color: #19bdf4 !important; }
.tl-header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.tl-theme-button {
  width: 42px; height: 42px; display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,.16); border-radius: 12px;
  background: rgba(255,255,255,.06); color: #fff; cursor: pointer;
}
.tl-theme-button:hover { background: rgba(255,255,255,.12); }
.tl-theme-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tl-theme-sun, .tl-theme-moon { display: none; }
html[data-theme="light"] .tl-theme-sun { display: block; }
html[data-theme="dark"] .tl-theme-moon { display: block; }
@media (max-width: 760px) { .tl-search-wrap { display: none; } }

/* Wordmark-only header: keep TrimLab visible after removing the graphic logo. */
.header .brand,
.tl-global-header .brand {
  font-size: 32px !important;
  font-weight: 800 !important;
  line-height: 1 !important;
  letter-spacing: -0.04em !important;
  white-space: nowrap !important;
}
.header .brand .tl-brand-trim,
.header .brand .tl-brand-lab,
.tl-global-header .brand .tl-brand-trim,
.tl-global-header .brand .tl-brand-lab {
  display: inline !important;
  font-size: inherit !important;
  font-weight: inherit !important;
  line-height: inherit !important;
  letter-spacing: inherit !important;
}