/* =========================================================================
   RIVER CITY CYBER — DESIGN SYSTEM
   Layers: tokens -> reset -> base -> layout -> components -> utilities
   Edit tokens in :root to retheme the whole site from one place.
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. DESIGN TOKENS
   Every color, font, spacing step, and effect lives here. Components below
   reference tokens only — never hardcoded values — so the whole theme can
   be changed by editing this block alone.
   ------------------------------------------------------------------------- */
:root {
  /* Base font size stays at the browser default (16px) so rem math is
     predictable and respects user accessibility settings. */
  font-size: 100%;

  /* --- Palette: Tron / cyberpunk core --- */
  --color-black: #000000;
  --color-blue: #00f3ff;
  --color-orange: #ff9100;
  --color-nitro: #00e5ff;
  --color-danger: #ff1a1a;
  --color-silver: #b8c7d6;
  --color-glass: rgba(10, 15, 25, 0.9);

  /* --- Semantic tokens (what things MEAN, not what they look like) ---
     Components use these, never --color-* directly. This is the layer
     that light/dark mode below actually overrides. */
  --bg-page: var(--color-black);
  --bg-surface: var(--color-glass);
  --bg-surface-2: rgba(20, 20, 20, 0.9);
  --text-primary: var(--color-silver);
  --text-heading: var(--color-blue);
  --accent: var(--color-blue);
  --accent-2: var(--color-orange);
  --accent-link: var(--color-nitro);
  --border-color: var(--color-blue);

  /* --- Typography --- */
  --font-heading: "Orbitron", sans-serif;
  --font-display: "Orbitron", sans-serif;
  --font-body: "Share Tech Mono", monospace;
  --font-mono:
    SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  /* Fluid type scale: scales smoothly between mobile and desktop without
     media-query breakpoints for font-size. */
  --text-sm: clamp(0.8rem, 0.76rem + 0.2vw, 0.9rem);
  --text-base: 1rem;
  --text-lg: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);
  --text-xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-2xl: clamp(2rem, 1.6rem + 2vw, 3rem);

  /* --- Spacing scale: one set of steps used everywhere for margin/padding/gap --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;

  /* --- Effects --- */
  --glow-subtle: 0 0 8px var(--accent);
  --glow-strong: 0 0 20px var(--accent), 0 0 40px var(--accent);
  --radius-sm: 4px;
  --radius-md: 8px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;

  /* --- Layout --- */
  --header-height: 4.5rem;
  --content-max-width: 1200px;
  --prose-max-width: 60ch;
}

/* -------------------------------------------------------------------------
   2. THEME OVERRIDES
   Light/dark mode only ever override semantic tokens above — never raw
   component CSS. Add a new theme by adding a new block here.
   ------------------------------------------------------------------------- */
body.light-mode {
  --bg-page: #e8edf2;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-2: rgba(225, 230, 238, 0.9);
  --text-primary: #1a1a1a;
  --text-heading: #005f95;
  --accent: #0090a8;
  --accent-2: var(--color-orange);
  --border-color: #0090a8;
}

/* Respect OS-level preference automatically when no explicit choice made */
@media (prefers-color-scheme: light) {
  body:not(.dark-mode):not(.light-mode) {
    --bg-page: #e8edf2;
    --bg-surface: rgba(255, 255, 255, 0.85);
    --bg-surface-2: rgba(225, 230, 238, 0.9);
    --text-primary: #1a1a1a;
    --text-heading: #005f95;
    --accent: #0090a8;
    --border-color: #0090a8;
  }
}

/* -------------------------------------------------------------------------
   3. RESET
   ------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

/* Respect reduced-motion preferences site-wide */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* -------------------------------------------------------------------------
   4. BASE ELEMENT STYLES
   ------------------------------------------------------------------------- */
body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  min-height: 100vh;
  padding-top: var(--header-height);
  position: relative;
  overflow-x: hidden;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

/* Static grid background, theme-aware via --border-color */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.15;
}

h1,
h2 {
  font-family: var(--font-display);
  color: var(--text-heading);
  text-align: left;
  font-weight: 700;
}

h1 {
  font-size: var(--text-2xl);
  margin-block: var(--space-5) var(--space-3);
}

h2.section-display {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  letter-spacing: 2px;
  border-bottom: 1px solid var(--border-color);
  display: inline-block;
  margin-bottom: var(--space-4);
}

p {
  max-width: 100%;
  margin-inline: 0;
  text-align: left;
}

ol {
  margin-inline: 0;
  text-align: left;
  list-style-position: outside;
  max-width: var(--prose-max-width);
  padding-inline-start: var(--space-4);
}
table {
  margin-inline: auto;
  border-collapse: collapse;
  margin-block: var(--space-3);
  text-align: center;
  border: 1px solid var(--accent-link);
}

th,
td {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--accent-link);
}

/* -------------------------------------------------------------------------
   5. LAYOUT PRIMITIVES
   Reusable layout patterns. Built with modern Grid/Flexbox so new sections
   can opt in without writing new layout CSS.
   ------------------------------------------------------------------------- */
.container {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: var(--space-5);
  margin-block: var(--space-6);
}

/* -------------------------------------------------------------------------
   6. HEADER / NAVBAR
   Semantic, three-zone header using CSS Grid (logo | brand | nav).
   Markup-flexible: any zone can hold 0+ children without breaking layout.
   ------------------------------------------------------------------------- */
.header-hud {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 1000;
  height: var(--header-height);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
  padding-inline: var(--space-5);
  background-color: var(--bg-surface);
  border-bottom: 2px solid var(--border-color);
  box-shadow: var(--glow-subtle);
  backdrop-filter: blur(10px);
}

.header-hud__brand {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 2px;
  text-shadow: var(--glow-subtle);
  white-space: nowrap;
  justify-self: center;
}

.header-hud__left {
  justify-self: start;
}

.header-hud__nav {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.header-hud a {
  text-decoration: none;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color var(--transition-base);
}

.header-hud a:hover {
  color: var(--accent);
  text-shadow: var(--glow-strong);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
}

.github-icon {
  width: 1.1rem;
  height: 1.1rem;
  fill: currentColor;
}

.theme-toggle {
  font-size: var(--text-lg);
  line-height: 1;
}

/* --- Dropdown menus (hover + keyboard accessible) --- */
.dropdown {
  position: relative;
}

.dropdown > button {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 14rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: var(--glow-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  animation: slide-down var(--transition-base);
}

.dropdown:hover .dropdown-content,
.dropdown:focus-within .dropdown-content {
  display: block;
}

.dropdown-content a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  transition:
    background-color var(--transition-fast),
    padding-left var(--transition-fast);
}

.dropdown-content a:hover {
  background-color: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  padding-left: var(--space-5);
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* -------------------------------------------------------------------------
   7. CARDS
   ------------------------------------------------------------------------- */
.data-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: var(--space-5);
  position: relative;
  transition: box-shadow var(--transition-base);
}

.data-card:hover {
  box-shadow: var(--glow-strong);
}

.intro-card {
  max-width: var(--prose-max-width);
  margin: var(--space-5) auto var(--space-6);
}

.intro-card p {
  margin: 0;
}

.data-card::before,
.data-card::after {
  content: "";
  position: absolute;
  width: 30px;
  height: 30px;
  border: 2px solid var(--border-color);
  transition: all var(--transition-base);
  pointer-events: none;
}

.data-card::before {
  top: 0;
  left: 0;
  border-right: none;
  border-bottom: none;
}

.data-card::after {
  bottom: 0;
  right: 0;
  border-left: none;
  border-top: none;
}

.data-card:hover::before,
.data-card:hover::after {
  width: 100%;
  height: 100%;
}

.card-header {
  font-family: var(--font-heading);
  color: var(--text-heading);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
}

.card-indicator {
  width: 8px;
  height: 8px;
  background: var(--accent-2);
  border-radius: 50%;
  box-shadow: var(--glow-strong);
  display: inline-block;
  margin-right: var(--space-3);
  flex-shrink: 0;
}

.data-card p + p {
  margin-top: var(--space-3);
}

.project-tech {
  font-size: var(--text-sm);
  color: var(--accent-2);
  margin-top: var(--space-3);
  background: rgba(0, 0, 0, 0.3);
  padding: var(--space-2);
  border-left: 2px solid var(--accent-2);
}

.project-phases {
  margin-block: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.8;
}

.project-subtitle {
  font-size: var(--text-sm);
  color: var(--accent-2);
  margin-bottom: var(--space-3);
}

/* -------------------------------------------------------------------------
   8. SKILL BARS
   ------------------------------------------------------------------------- */
.skill-item + .skill-item {
  margin-top: var(--space-4);
}

.skill-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
}

.skill-track {
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: var(--glow-subtle);
  transition: width 1.5s ease-out;
}

/* -------------------------------------------------------------------------
   9. BUTTONS / LINKS
   ------------------------------------------------------------------------- */
.boost-button {
  --button-color: var(--accent);
  display: inline-block;
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-5);
  background: transparent;
  border: 2px solid var(--button-color);
  color: var(--button-color);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 2px;
  text-decoration: none;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base);
}

.boost-button:hover {
  background: var(--button-color);
  color: var(--bg-page);
  box-shadow:
    0 0 20px var(--button-color),
    0 0 40px var(--button-color);
}

.boost-button:hover::before {
  background: var(--button-color);
  box-shadow:
    0 0 20px var(--button-color),
    0 0 40px var(--button-color);
}

/* Color variants via a single data attribute instead of inline styles */
.boost-button[data-variant="orange"] {
  --button-color: var(--accent-2);
}

.boost-button[data-variant="nitro"] {
  --button-color: var(--color-nitro);
}

/* -------------------------------------------------------------------------
   10. CODE BLOCKS
   ------------------------------------------------------------------------- */
pre[class*="lang-"] {
  padding: var(--space-3);
  margin-block: var(--space-2);
  overflow: auto;
  max-height: 70vh;
  max-width: 90vw;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-surface-2);
  width: fit-content;
}

code[class*="lang-"],
pre[class*="lang-"] {
  color: var(--text-primary);
  background: var(--bg-surface-2);
  font-family: var(--font-mono);
  font-size: 0.95em;
  text-align: left;
  white-space: pre;
  line-height: 1.5;
  tab-size: 4;
  hyphens: none;
}

.code-block-container {
  position: relative;
  display: block;
  width: fit-content;
  margin: var(--space-4) auto;
}

.copy-button {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--accent);
  color: var(--bg-page);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  z-index: 10;
  transition: background-color var(--transition-base);
}

.copy-button:hover {
  filter: brightness(0.85);
}

.copy-feedback {
  position: absolute;
  top: 3.2rem;
  right: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--accent);
  color: var(--bg-page);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  pointer-events: none;
  animation: fade-in-out 2s ease-in-out;
}

@keyframes fade-in-out {
  0%,
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

/* -------------------------------------------------------------------------
   11. FOOTER
   ------------------------------------------------------------------------- */
footer {
  text-align: center;
  padding: var(--space-6);
  margin-top: var(--space-7);
  border-top: 1px solid var(--border-color);
  background: linear-gradient(
    180deg,
    transparent,
    color-mix(in srgb, var(--accent) 5%, transparent)
  );
}

.footer-status {
  font-size: var(--text-sm);
  color: var(--accent);
  margin-top: var(--space-2);
}

/* -------------------------------------------------------------------------
   12. UTILITIES
   ------------------------------------------------------------------------- */
.text-center {
  text-align: center;
}

.mt-7 {
  margin-top: var(--space-7);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}
/*
3D Diagraming
*/
.console {
  background: #1a1a1a;
  border: 2px solid #333;
  border-radius: 8px;
  padding: 24px;
  box-shadow:
    0 0 40px rgba(255, 176, 0, 0.08),
    inset 0 0 20px rgba(0, 0, 0, 0.6);
  width: 100%;
}

model-viewer {
  width: 100%;
  height: 1000px; /* ← Adjust this to enlarge */
  display: block;
  margin: 0 auto;
  background: #050505;
  border: 1px solid #333;
  border-radius: 4px;
  --poster-color: transparent;
}
/* -------------------------------------------------------------------------
   13. RESPONSIVE
   ------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --header-height: auto;
  }

  body {
    padding-top: 11rem;
  }

  .header-hud {
    grid-template-columns: 1fr;
    height: auto;
    padding-block: var(--space-3);
    justify-items: center;
    gap: var(--space-2);
  }

  .header-hud__left,
  .header-hud__brand,
  .header-hud__nav {
    justify-self: center;
  }

  .header-hud__nav {
    justify-content: center;
  }

  .dropdown-content {
    position: static;
    width: 100%;
    border: none;
    background: transparent;
    box-shadow: none;
  }

  p {
    max-width: 100%;
  }
  .console {
    padding: var(--space-3); /* Tighter on mobile */
  }

  model-viewer {
    height: 400px; /* Smaller viewport on mobile */
  }
}