/* ==========================================================================
   Ryan G. Stott — static site
   Tron / Master Control aesthetic: pure yellow + grayscale, no blue.
   ========================================================================== */

:root {
  /* Brand anchor — fixed, do not change without Ryan's sign-off */
  --color-accent: #ffd33e;
  --color-accent-ink: #201a04;

  /* Grayscale scale — replaces the navy scale used on the Next.js build */
  --color-black: #0a0a0a;
  --color-gray-950: #121212;
  --color-gray-900: #1a1a1a;
  --color-gray-800: #262626;
  --color-gray-700: #333333;
  --color-gray-600: #4d4d4d;
  --color-gray-400: #999999;
  --color-white: #f2f2f2;

  --background: var(--color-black);
  --foreground: var(--color-white);

  --glow-accent: 0 0 6px rgba(255, 211, 62, 0.55), 0 0 22px rgba(255, 211, 62, 0.18);

  --font-display: "Orbitron", "Arial Narrow", sans-serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Space Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  line-height: 1.6;
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(255, 211, 62, 0.07), transparent 60%),
    linear-gradient(rgba(255, 211, 62, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 211, 62, 0.05) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
  background-position: center, center, center;
  background-attachment: fixed;
  min-height: 100vh;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  text-shadow: 0 0 6px rgba(255, 211, 62, 0.7);
}

/* ---------- Typography helpers ---------- */

.hud-label {
  font-family: var(--font-display);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-weight: 700;
  color: var(--foreground);
  margin: 0 0 0.5em;
}
h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
}
h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}
h3 {
  font-size: 1.1rem;
}
p {
  color: var(--color-gray-400);
  margin: 0 0 1em;
}

/* ---------- Layout ---------- */

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-main {
  padding-top: 6rem;
  padding-bottom: 4rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Nav ---------- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-gray-800);
}
.site-nav .logo {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  text-shadow: 0 0 8px rgba(255, 211, 62, 0.6);
}
.site-nav .nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav .nav-links a {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-white);
}
.site-nav .nav-links a:hover,
.site-nav .nav-links a[aria-current="page"] {
  color: var(--color-accent);
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}
@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }
  .site-nav .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-black);
    border-bottom: 1px solid var(--color-gray-800);
    display: none;
  }
  .site-nav .nav-links.open {
    display: flex;
  }
  .site-nav .nav-links a {
    padding: 0.9rem 1.5rem;
    border-top: 1px solid var(--color-gray-900);
  }
}

/* ---------- Hero ---------- */

.hero {
  padding: 8rem 0 3rem;
  text-align: left;
}
.hero .eyebrow {
  color: var(--color-accent);
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
  text-shadow: 0 0 8px rgba(255, 211, 62, 0.6);
}
.hero p.lead {
  max-width: 640px;
  color: var(--color-gray-400);
  font-size: 1.05rem;
}

/* ---------- HUD panel / card ---------- */

.hud-frame {
  position: relative;
}
.hud-frame::before,
.hud-frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}
.hud-frame::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--color-accent);
  border-left: 2px solid var(--color-accent);
}
.hud-frame::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--color-accent);
  border-right: 2px solid var(--color-accent);
}

.card {
  position: relative;
  border: 1px solid var(--color-gray-700);
  background: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(3px);
  padding: 1.5rem;
}
.card h3 {
  margin-bottom: 0.5rem;
}
.card p {
  margin-bottom: 0;
  font-size: 0.92rem;
}
.app-screenshot {
  width: 100%;
  border: 1px solid var(--color-gray-700);
}
a.card {
  display: block;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
a.card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--glow-accent);
}
a.card:hover h3 {
  color: var(--color-accent);
}

.badge {
  font-family: var(--font-display);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  display: inline-block;
  border: 1px solid rgba(255, 211, 62, 0.5);
  background: rgba(10, 10, 10, 0.6);
  color: var(--color-accent);
  padding: 0.3rem 0.6rem;
  margin: 0.15rem 0.3rem 0.15rem 0;
}

.tag-row {
  margin-top: 0.75rem;
}

/* ---------- Buttons ---------- */

.btn {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  cursor: pointer;
  transition: filter 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  filter: brightness(1.1);
  box-shadow: var(--glow-accent);
}
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
}
.btn-secondary:hover {
  background: rgba(255, 211, 62, 0.08);
}

/* ---------- Forms ---------- */

input,
textarea {
  width: 100%;
  background: var(--color-gray-950);
  border: 1px solid var(--color-gray-700);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 0.7rem 0.85rem;
  margin-bottom: 0.85rem;
}
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--glow-accent);
}
input::placeholder,
textarea::placeholder {
  color: var(--color-gray-600);
}
.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}
.calc-table th,
.calc-table td {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--color-gray-800);
}
.calc-table th {
  color: var(--color-gray-400);
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.calc-table td:last-child {
  color: var(--color-accent);
}

label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  margin-bottom: 0.35rem;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--color-gray-800);
  padding: 2rem 0;
  text-align: center;
}
.site-footer p {
  font-size: 0.8rem;
  color: var(--color-gray-600);
}
.site-footer a {
  color: var(--color-gray-400);
}

/* ---------- Field-guide checklist ---------- */

.checklist-header {
  margin-bottom: 2rem;
}
.checklist-header .lead {
  max-width: 640px;
}
.checklist-progress {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.95rem;
  margin: 1rem 0 0.5rem;
}
.checklist-progress-bar {
  width: 100%;
  max-width: 420px;
  height: 6px;
  background: var(--color-gray-800);
  border: 1px solid var(--color-gray-700);
  overflow: hidden;
}
.checklist-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  box-shadow: var(--glow-accent);
  transition: width 0.25s ease;
}
.checklist-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}
.checklist-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray-600);
  margin-top: 0.5rem;
}

.checklist-section {
  border: 1px solid var(--color-gray-700);
  background: rgba(26, 26, 26, 0.7);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}
.checklist-section h2 {
  font-size: 0.95rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.checklist-item {
  display: flex !important;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.85rem 0.25rem;
  border-bottom: 1px solid var(--color-gray-800);
  text-transform: none;
  font-family: var(--font-sans);
  letter-spacing: normal;
  color: var(--color-white);
  cursor: pointer;
}
.checklist-section .checklist-item:last-child {
  border-bottom: none;
}
.checklist-item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 26px;
  height: 26px;
  min-width: 26px;
  flex-shrink: 0;
  margin: 0;
  border: 2px solid var(--color-gray-600);
  background: var(--color-gray-950);
  position: relative;
  cursor: pointer;
}
.checklist-item input[type="checkbox"]:checked {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: var(--glow-accent);
}
.checklist-item input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 3px;
  width: 6px;
  height: 12px;
  border: solid var(--color-accent-ink);
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}
.checklist-item span {
  padding-top: 0.15rem;
  font-size: 1rem;
  line-height: 1.5;
}
.checklist-item:has(input:checked) span {
  color: var(--color-gray-600);
  text-decoration: line-through;
}

/* Focus mode — the one mechanism for every "strip the chrome for on-site mobile use" page:
   field guides/checklists AND individual tool pages both use the same body.tool-focused class,
   toggled by a [data-focus-toggle] button (see js/focus-mode.js). Native Fullscreen API is
   layered on top as progressive enhancement (js/focus-mode.js) since it's unreliable on iOS
   Safari — this CSS-only mechanism is what actually has to work everywhere. */
body.tool-focused .site-nav,
body.tool-focused .site-footer,
body.tool-focused .tool-focus-hide {
  display: none !important;
}
body.tool-focused .page-main {
  padding-top: 1.5rem;
}
body.tool-focused .checklist-item {
  padding: 1.1rem 0.25rem;
}
body.tool-focused .checklist-item span {
  font-size: 1.1rem;
}

@media (max-width: 480px) {
  .checklist-actions .btn,
  .tool-actions .btn {
    flex: 1 1 auto;
  }
}

/* ---------- Tool grid (category hub pages) ---------- */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.tool-tile {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 150px;
  border: 1px solid var(--color-gray-700);
  background: rgba(26, 26, 26, 0.7);
  padding: 1.25rem;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.tool-tile:hover,
.tool-tile:focus-visible {
  border-color: var(--color-accent);
  box-shadow: var(--glow-accent);
  outline: none;
}
.tool-tile:hover h3,
.tool-tile:focus-visible h3 {
  color: var(--color-accent);
}
.tool-tile h3 {
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}
.tool-tile p {
  font-size: 0.85rem;
  margin: 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.tool-tile .badge {
  margin-top: 0.75rem;
  align-self: flex-start;
}

/* ---------- Individual tool page (every tool/guide gets its own page) ---------- */

.tool-page {
  max-width: 640px;
}
.tool-actions {
  display: flex;
  gap: 0.75rem;
  margin: 1.25rem 0 1.5rem;
  flex-wrap: wrap;
}

/* ---------- Diagram popups (checklist pages) ---------- */

.diagram-trigger {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border: 1px solid var(--color-gray-600);
  background: transparent;
  color: var(--color-accent);
  padding: 0.1rem 0.5rem;
  margin-left: 0.4rem;
  border-radius: 2px;
  cursor: pointer;
  vertical-align: middle;
  white-space: nowrap;
}
.diagram-trigger:hover {
  border-color: var(--color-accent);
  background: rgba(255, 211, 62, 0.08);
}
.diagram-dialog {
  border: 1px solid var(--color-gray-700);
  background: var(--color-gray-950);
  color: var(--color-gray-400);
  padding: 0;
  max-width: 560px;
  width: 90vw;
}
.diagram-dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
}
.diagram-dialog-inner {
  padding: 1.5rem;
}
.diagram-dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.diagram-dialog-head strong {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.diagram-dialog-close {
  font-family: var(--font-mono);
  background: none;
  border: 1px solid var(--color-gray-600);
  color: var(--color-gray-400);
  width: 26px;
  height: 26px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
}
.diagram-dialog-close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.diagram-dialog-caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gray-600);
  margin-top: 0.75rem;
}

/* ---------- Utility ---------- */

.section {
  padding: 3rem 0;
}
.section-title {
  margin-bottom: 1.5rem;
}
.center {
  text-align: center;
}
.mt-1 {
  margin-top: 1rem;
}
.mt-2 {
  margin-top: 2rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}