/*
 * The Engine — Brand Design System v0.2
 * Dark-first. Inverted on command.
 * Source: colors_and_type.css + app-specific Tailwind overrides
 */

/* ── Primitive tokens (raw palette, never use directly in UI) ────── */
:root {
  --engine-void:       #080807;
  --engine-carbon:     #0e0e0c;
  --engine-graphite:   #171714;
  --engine-iron:       #24231f;
  --engine-border-raw: #34322e;
  --engine-ash:        #7d786e;
  --engine-dust:       #b8b2a6;
  --engine-bone:       #f3f0e8;
  --engine-white:      #ffffff;
  --engine-paper:      #f3f0e8;
  --engine-paper-hot:  #fbf8f0;
  --engine-paper-dim:  #eee9dc;
  --engine-paper-deep: #e8e1d2;
  --engine-rule-light: #d3cab9;
  --engine-ink:        #151513;
  --engine-ash-dark:   #5f5b52;
  --engine-faint-dark: #9f998d;
  --engine-error:      #b05a55;
  --engine-warning:    #b69a5c;
  --engine-success:    #7e9a68;
  --engine-info:       #8892d0;
}

/* ── Theme tokens: dark (default) ───────────────────────────────── */
:root,
[data-theme='dark'] {
  color-scheme: dark;
  --color-bg:        #080807;
  --color-surface:   #0e0e0c;
  --color-surface-2: #171714;
  --color-surface-3: #24231f;
  --color-text:       #f3f0e8;
  --color-text-muted: #b8b2a6;
  --color-text-faint: #7d786e;
  --color-border: #34322e;
  --color-accent:          #f3f0e8;
  --color-accent-contrast: #080807;
  --texture-opacity: 0.22;
  --color-error:      #b05a55;
  --color-error-bg:   #2a1514;
  --color-warning:    #b69a5c;
  --color-warning-bg: #2a2214;
  --color-success:    #7e9a68;
  --color-success-bg: #1b2b18;
  --color-info:       #8892d0;
  --color-info-bg:    #16182a;
}

/* ── Theme tokens: light (inverted) ─────────────────────────────── */
[data-theme='light'] {
  color-scheme: light;
  --color-bg:        #f3f0e8;
  --color-surface:   #fbf8f0;
  --color-surface-2: #eee9dc;
  --color-surface-3: #e8e1d2;
  --color-text:       #151513;
  --color-text-muted: #5f5b52;
  --color-text-faint: #9f998d;
  --color-border: #d3cab9;
  --color-accent:          #0a0a09;
  --color-accent-contrast: #fbf8f0;
  --texture-opacity: 0.14;
  --color-error:      #8b2f2f;
  --color-error-bg:   #f5e4e4;
  --color-warning:    #8a6a2f;
  --color-warning-bg: #f5ecd8;
  --color-success:    #3d5c30;
  --color-success-bg: #e4ece0;
  --color-info:       #2e3a6e;
  --color-info-bg:    #eaebf5;
}

/* ── Typography tokens ───────────────────────────────────────────── */
:root {
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'Work Sans', 'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-hero: clamp(3.75rem,  1.2rem  + 8.5vw,  9.25rem);

  --type-hero-font:        var(--font-display);
  --type-hero-size:        var(--text-hero);
  --type-hero-weight:      400;
  --type-hero-line-height: 0.95;
  --type-hero-tracking:    -0.012em;
  --type-display-font:        var(--font-display);
  --type-display-size:        var(--text-2xl);
  --type-display-weight:      400;
  --type-display-line-height: 1.0;
  --type-display-tracking:    -0.012em;
  --type-subhead-font:        var(--font-body);
  --type-subhead-size:        var(--text-lg);
  --type-subhead-weight:      600;
  --type-subhead-line-height: 1.2;
  --type-body-font:        var(--font-body);
  --type-body-size:        var(--text-base);
  --type-body-weight:      400;
  --type-body-line-height: 1.6;
  --type-label-font:        var(--font-body);
  --type-label-size:        var(--text-sm);
  --type-label-weight:      500;
  --type-label-line-height: 1.3;
  --type-eyebrow-font:     var(--font-mono);
  --type-eyebrow-size:     var(--text-xs);
  --type-eyebrow-weight:   600;
  --type-eyebrow-tracking: 0.12em;
  --type-code-font:        var(--font-mono);
  --type-code-size:        var(--text-sm);
  --type-code-line-height: 1.7;
}

/* ── Spacing, layout & motion tokens ────────────────────────────── */
:root {
  --space-1:  0.25rem;  --space-2:  0.5rem;  --space-3:  0.75rem;
  --space-4:  1rem;     --space-5:  1.25rem; --space-6:  1.5rem;
  --space-8:  2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;     --space-20: 5rem;    --space-24: 6rem;
  --space-32: 8rem;

  --content-wide:    1180px;
  --content-default: 960px;
  --radius-ui:       2px;

  --ease-engine:    cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast:  160ms;
  --duration-base:  180ms;
  --duration-medium: 420ms;
}

/* ── Base ────────────────────────────────────────────────────────── */
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  font-family: var(--font-body) !important;
  color: var(--color-text) !important;
  background:
    radial-gradient(circle at 10% 20%, color-mix(in oklab, var(--color-text) 7%, transparent), transparent 18rem),
    linear-gradient(135deg, color-mix(in oklab, var(--color-text) 3%, transparent) 0 1px, transparent 1px 100%),
    var(--color-bg) !important;
  background-size: auto, 28px 28px, auto !important;
}

body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  opacity: var(--texture-opacity);
  background-image:
    radial-gradient(circle at 17% 23%, currentColor 0 1px, transparent 1px),
    radial-gradient(circle at 72% 41%, currentColor 0 1px, transparent 1px),
    radial-gradient(circle at 38% 79%, currentColor 0 1px, transparent 1px);
  background-size: 23px 23px, 37px 37px, 53px 53px;
  mix-blend-mode: overlay;
}

/* ── Global invert transition (mechanical polarity switch) ───────── */
*,
*::before,
*::after {
  transition:
    background-color var(--duration-base) var(--ease-engine),
    color var(--duration-base) var(--ease-engine),
    border-color var(--duration-base) var(--ease-engine) !important;
}
/* Override transition for elements that need custom duration */
.product-card,
nav {
  transition:
    background-color var(--duration-base) var(--ease-engine),
    color var(--duration-base) var(--ease-engine),
    border-color var(--duration-fast) var(--ease-engine),
    box-shadow var(--duration-fast) var(--ease-engine) !important;
}

/* ── Engine utility classes ──────────────────────────────────────── */
.engine-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--color-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.engine-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.engine-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 var(--space-5);
  border: 1px solid var(--color-accent); border-radius: var(--radius-ui);
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600; cursor: pointer;
}
.engine-btn-primary { background: var(--color-accent); color: var(--color-accent-contrast); }
.engine-btn-secondary { background: transparent; color: var(--color-text); }
.engine-btn-secondary:hover { background: var(--color-text) !important; color: var(--color-bg) !important; }

.engine-invert-btn {
  display: inline-flex; align-items: center;
  min-height: 36px; padding: 0 var(--space-3);
  border: 1px solid color-mix(in oklab, var(--color-text) 22%, transparent);
  border-radius: var(--radius-ui); background: transparent; color: var(--color-text);
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
}
.engine-invert-btn:hover { background: var(--color-text) !important; color: var(--color-bg) !important; }

.engine-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-ui);
  padding: var(--space-5);
}

.engine-badge {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--color-border); border-radius: var(--radius-ui);
  color: var(--color-text-faint);
}
.engine-badge-success { background: var(--color-success-bg); color: var(--color-success); border-color: transparent; }
.engine-badge-error   { background: var(--color-error-bg);   color: var(--color-error);   border-color: transparent; }
.engine-badge-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: transparent; }
.engine-badge-info    { background: var(--color-info-bg);    color: var(--color-info);    border-color: transparent; }

/* ── Tailwind class overrides ────────────────────────────────────── */

/* Backgrounds */
.bg-gray-50  { background-color: var(--color-surface-2) !important; }   /* table headers, filter areas */
.bg-white    { background-color: var(--color-surface) !important; }      /* cards, panels */
.bg-gray-100 { background-color: var(--color-surface-3) !important; }

.hover\:bg-gray-50:hover  { background-color: var(--color-surface-2) !important; }
.hover\:bg-gray-700:hover {
  background-color: color-mix(in oklab, var(--color-accent) 88%, var(--color-bg)) !important;
}

/* Borders */
.border-gray-300 { border-color: var(--color-border) !important; }
.border-gray-200 { border-color: var(--color-border) !important; }
.border-gray-100 { border-color: color-mix(in oklab, var(--color-border) 55%, transparent) !important; }
.divide-gray-100 > * + * { border-color: color-mix(in oklab, var(--color-border) 55%, transparent) !important; }
.divide-gray-200 > * + * { border-color: var(--color-border) !important; }

/* Text */
.text-gray-900 { color: var(--color-text) !important; }
.text-gray-700 { color: var(--color-text) !important; }
.text-gray-600 { color: var(--color-text-muted) !important; }
.text-gray-500 { color: var(--color-text-muted) !important; }
.text-gray-400 { color: var(--color-text-faint) !important; }
.text-gray-300 { color: var(--color-text-faint) !important; }

/* Primary buttons (bg-gray-900 / text-white pattern) */
.bg-gray-900 { background-color: var(--color-accent) !important; }
.text-white  { color: var(--color-accent-contrast) !important; }

/* Inputs & selects */
input, select, textarea {
  color-scheme: inherit;
  background-color: var(--color-surface) !important;
  color: var(--color-text) !important;
  border-color: var(--color-border) !important;
}
input::placeholder, textarea::placeholder { color: var(--color-text-faint) !important; }
.focus\:ring-2:focus        { --tw-ring-opacity: 0.3 !important; }
.focus\:ring-gray-400:focus { --tw-ring-color: var(--color-text-muted) !important; }

/* Border radius — sharp, mechanical */
.rounded-lg  { border-radius: var(--radius-ui) !important; }
.rounded-md  { border-radius: var(--radius-ui) !important; }
.rounded     { border-radius: var(--radius-ui) !important; }

/* Status badges — theme-aware */
.bg-green-100   { background-color: var(--color-success-bg) !important; }
.text-green-700 { color: var(--color-success) !important; }
.bg-blue-50     { background-color: var(--color-info-bg) !important; }
.text-blue-700  { color: var(--color-info) !important; }
.text-blue-600  { color: var(--color-info) !important; }
.text-red-600   { color: var(--color-error) !important; }
.bg-amber-100   { background-color: var(--color-warning-bg) !important; }
.text-amber-500 { color: var(--color-warning) !important; }

/* Mono */
.font-mono, code, pre { font-family: var(--font-mono) !important; }

/* ── Progress bar ────────────────────────────────────────────────── */
#nprogress { background: var(--color-accent) !important; }

/* ── Nav ─────────────────────────────────────────────────────────── */
.brand-nav {
  background: color-mix(in oklab, var(--color-bg) 88%, transparent) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.brand-wordmark {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--color-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.desktop-nav { display: flex; align-items: stretch; }

.nav-group { position: relative; }

.nav-group-btn {
  display: flex; align-items: center; gap: 4px;
  height: 3.5rem; padding: 0 14px;
  background: none; border: none;
  color: var(--color-text-muted);
  font-family: var(--font-body); font-size: 14px; cursor: pointer; white-space: nowrap;
}
.nav-group-btn::after { content: '▾'; font-size: 0.6em; opacity: 0.55; }
.nav-group:hover .nav-group-btn,
.nav-group:focus-within .nav-group-btn { color: var(--color-text); }

.nav-dropdown {
  display: none;
  position: absolute; top: 100%; left: 0; min-width: 170px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-top: none; padding: 5px 0; z-index: 100;
}
.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown { display: block; }

.nav-dropdown a {
  display: block; padding: 7px 16px;
  font-size: 12px; color: var(--color-text-muted); text-decoration: none;
}
.nav-dropdown a:hover { background: var(--color-surface-2) !important; color: var(--color-text) !important; }

/* Hamburger */
.hamburger-btn {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  background: none; border: none; color: var(--color-text); cursor: pointer; flex-shrink: 0;
}

.mobile-menu {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 16px 20px 20px;
}
.mobile-menu.hidden { display: none; }
.mobile-menu-section { margin-bottom: 16px; }
.mobile-menu-label {
  font-family: var(--font-mono); font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-text-faint); margin-bottom: 4px;
}
.mobile-menu a {
  display: block; padding: 6px 8px;
  font-size: 14px; color: var(--color-text-muted); border-radius: 2px;
}
.mobile-menu a:hover { background: var(--color-surface-2) !important; color: var(--color-text) !important; }

@media (max-width: 767px) {
  .desktop-nav { display: none; }
  .hamburger-btn { display: flex; }
}

/* Invert button */
.invert-btn {
  display: inline-flex; align-items: center;
  min-height: 36px; padding: 0 10px;
  border: 1px solid color-mix(in oklab, var(--color-text) 22%, transparent);
  border-radius: 2px; background: transparent; color: var(--color-text);
  font-family: var(--font-mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
}
.invert-btn:hover { background: var(--color-text) !important; color: var(--color-bg) !important; }

/* ── Dashboard stat cards ────────────────────────────────────────── */
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 20px 22px;
  text-decoration: none;
  display: block;
}
.stat-card:hover { border-color: var(--color-text-faint) !important; }
.stat-count {
  font-size: 30px; font-weight: 700; color: var(--color-text);
  font-variant-numeric: tabular-nums; line-height: 1.1;
}
.stat-label { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }

/* ── Product catalog cards ───────────────────────────────────────── */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (min-width: 768px)  { .catalog-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .catalog-grid { grid-template-columns: repeat(4, 1fr); } }

/* Cards sit on --color-bg inside the --color-surface manufacturer section for depth */
.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  display: flex; flex-direction: column;
  text-decoration: none; color: inherit; cursor: pointer;
}
.product-card:hover {
  border-color: var(--color-text-faint) !important;
  box-shadow: 0 4px 20px color-mix(in oklab, var(--color-text) 8%, transparent) !important;
}

.card-plate {
  aspect-ratio: 4 / 3;
  background: var(--color-surface-2);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.card-plate::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(color-mix(in oklab, var(--color-border) 60%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklab, var(--color-border) 60%, transparent) 1px, transparent 1px);
  background-size: 20px 20px; opacity: 0.5;
}
.card-initial {
  position: relative; z-index: 1;
  font-family: var(--font-display); font-size: 2.5rem; line-height: 1;
  color: var(--color-text-faint); user-select: none;
}

.card-body { padding: 12px; flex: 1; display: flex; flex-direction: column; gap: 5px; }

.card-category-badge {
  display: inline-block;
  font-family: var(--font-mono); font-size: 9px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-text-faint); border: 1px solid var(--color-border);
  padding: 2px 6px; border-radius: 2px; align-self: flex-start;
}

.card-name {
  font-size: 13px; font-weight: 600; color: var(--color-text); line-height: 1.3;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-sku {
  font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint);
}
.card-description {
  font-size: 11px; color: var(--color-text-muted); line-height: 1.5; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

.card-footer {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-top: 6px; padding-top: 8px;
  border-top: 1px solid color-mix(in oklab, var(--color-border) 55%, transparent);
}
.card-price-amount {
  display: block; font-size: 16px; font-weight: 700;
  color: var(--color-text); font-variant-numeric: tabular-nums; line-height: 1.1;
}
.card-price-label {
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-text-faint);
}
.card-labor {
  font-family: var(--font-mono); font-size: 10px; color: var(--color-text-faint);
  border: 1px solid var(--color-border); padding: 2px 6px; border-radius: 2px;
}

/* ── Manufacturer sections ───────────────────────────────────────── */
.mfr-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px; overflow: hidden; margin-bottom: 16px;
}
.mfr-section > summary { list-style: none; }
.mfr-section > summary::-webkit-details-marker { display: none; }

.mfr-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; cursor: pointer; user-select: none;
}
.mfr-header:hover { background: var(--color-surface-2) !important; }

.mfr-name { font-size: 15px; font-weight: 600; color: var(--color-text); }
.mfr-meta { font-family: var(--font-mono); font-size: 11px; color: var(--color-text-faint); margin-top: 3px; }

.mfr-toggle-icon {
  font-size: 11px; color: var(--color-text-faint);
  transition: transform var(--duration-fast) var(--ease-engine) !important;
  flex-shrink: 0;
}
details.mfr-section[open] .mfr-toggle-icon { transform: rotate(180deg); }

.mfr-body { padding: 16px 20px 20px; border-top: 1px solid var(--color-border); }