/* Lukek Consulting - design tokens shared across all variations */

/* Register custom properties as <color> so CSS transitions can interpolate
   them smoothly. Without @property, the variable swap would jump. */
@property --accent {
  syntax: "<color>";
  inherits: true;
  initial-value: #0a0a0a;
}
@property --accent-soft {
  syntax: "<color>";
  inherits: true;
  initial-value: rgba(10, 10, 10, 0.08);
}

:root {
  /* All accent changes (cycle ticks + manual picks) ease across; the cycle
     tick is 95ms so a 80ms transition reads as one continuous sweep. */
  transition: --accent 90ms linear, --accent-soft 90ms linear;
}

:root {
  /* Light theme - default "paper" background */
  --bg: #fafaf8;
  --bg-2: #f3f1ec;
  --fg: #0a0a0a;
  --fg-strong: #000;
  --fg-muted: #525252;
  --fg-faint: #a3a3a3;
  --fg-ghost: #d4d4d4;
  --line: rgba(0, 0, 0, 0.09);
  --line-strong: rgba(0, 0, 0, 0.22);
  --accent: #0a0a0a;
  --accent-soft: rgba(10, 10, 10, 0.08);

  --density: 1;

  --font-sans: "Inter Tight", "Geist", -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --font-serif: "Fraunces", Georgia, serif;
}

/* Light-mode background variants - fg stays the same, only paper changes */
:root[data-bg-light="paper"]   { --bg: #fafaf8; --bg-2: #f3f1ec; }
:root[data-bg-light="bone"]    { --bg: #f3efe6; --bg-2: #e8e3d6; }
:root[data-bg-light="stone"]   { --bg: #ebe9e3; --bg-2: #ddd9d0; }
:root[data-bg-light="mist"]    { --bg: #eef0f1; --bg-2: #e3e6e8; }
:root[data-bg-light="cloud"]   { --bg: #f5f3ee; --bg-2: #ebe7df; }
:root[data-bg-light="white"]   { --bg: #ffffff; --bg-2: #f5f4ef; }

:root[data-dark="true"] {
  /* Dark theme - default "ink" background */
  --bg: #0a0a0a;
  --bg-2: #141414;
  --fg: #f5f5f5;
  --fg-strong: #fff;
  --fg-muted: #a3a3a3;
  --fg-faint: #525252;
  --fg-ghost: #2a2a2a;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.28);
  --accent: #f5f5f5;
  --accent-soft: rgba(255, 255, 255, 0.08);
}

/* Dark-mode background variants - only paper changes */
:root[data-dark="true"][data-bg-dark="ink"]      { --bg: #0a0a0a; --bg-2: #141414; }
:root[data-dark="true"][data-bg-dark="coal"]     { --bg: #1a1817; --bg-2: #252220; }
:root[data-dark="true"][data-bg-dark="graphite"] { --bg: #1c1e22; --bg-2: #272a2e; }
:root[data-dark="true"][data-bg-dark="slate"]    { --bg: #1f242b; --bg-2: #2a3038; }
:root[data-dark="true"][data-bg-dark="black"]    { --bg: #000000; --bg-2: #0c0c0c; }

/* 10-stop accent palette (light defaults) */
:root[data-accent="copper"]    { --accent: #b8633a; --accent-soft: rgba(184, 99, 58, 0.12); }
:root[data-accent="signal"]    { --accent: #2c5fd6; --accent-soft: rgba(44, 95, 214, 0.12); }
:root[data-accent="forest"]    { --accent: #4d7c54; --accent-soft: rgba(77, 124, 84, 0.12); }
:root[data-accent="cinnabar"]  { --accent: #c84a2c; --accent-soft: rgba(200, 74, 44, 0.12); }
:root[data-accent="amber"]     { --accent: #b8851a; --accent-soft: rgba(184, 133, 26, 0.12); }
:root[data-accent="plum"]      { --accent: #7a3c75; --accent-soft: rgba(122, 60, 117, 0.12); }
:root[data-accent="teal"]      { --accent: #2a7a78; --accent-soft: rgba(42, 122, 120, 0.12); }
:root[data-accent="slate"]     { --accent: #4a5a78; --accent-soft: rgba(74, 90, 120, 0.12); }
:root[data-accent="magenta"]   { --accent: #b8366e; --accent-soft: rgba(184, 54, 110, 0.12); }

/* dark-mode tonal adjustments */
:root[data-dark="true"][data-accent="copper"]   { --accent: #d99668; --accent-soft: rgba(217, 150, 104, 0.16); }
:root[data-dark="true"][data-accent="signal"]   { --accent: #6b94f0; --accent-soft: rgba(107, 148, 240, 0.16); }
:root[data-dark="true"][data-accent="forest"]   { --accent: #82b08a; --accent-soft: rgba(130, 176, 138, 0.16); }
:root[data-dark="true"][data-accent="cinnabar"] { --accent: #e3795b; --accent-soft: rgba(227, 121, 91, 0.16); }
:root[data-dark="true"][data-accent="amber"]    { --accent: #e0b34a; --accent-soft: rgba(224, 179, 74, 0.16); }
:root[data-dark="true"][data-accent="plum"]     { --accent: #b07aaa; --accent-soft: rgba(176, 122, 170, 0.16); }
:root[data-dark="true"][data-accent="teal"]     { --accent: #5cb0ae; --accent-soft: rgba(92, 176, 174, 0.16); }
:root[data-dark="true"][data-accent="slate"]    { --accent: #8090b0; --accent-soft: rgba(128, 144, 176, 0.16); }
:root[data-dark="true"][data-accent="magenta"]  { --accent: #df6da0; --accent-soft: rgba(223, 109, 160, 0.16); }

/* density: a multiplier all variations apply to their internal spacing */
:root[data-density="compact"] { --density: 0.78; }
:root[data-density="comfortable"] { --density: 1; }
:root[data-density="airy"] { --density: 1.3; }

/* Artboard wrapper - common reset */
.lp {
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "cv11";
  letter-spacing: -0.011em;
  overflow: hidden;
  position: relative;
  box-sizing: border-box;
}
.lp *, .lp *::before, .lp *::after { box-sizing: border-box; }
.lp a { color: inherit; text-decoration: none; }
.lp button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }
.lp input, .lp textarea { font: inherit; color: inherit; }

.mono { font-family: var(--font-mono); font-feature-settings: "ss01", "ss02"; }
.tabnum { font-variant-numeric: tabular-nums; }

/* Cursors */
.lp button:hover, .lp a:hover, .lp [role="button"]:hover { cursor: pointer; }

/* Subtle grid background patterns used by V1 */
.grid-bg {
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
}
.grid-bg-fine {
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Schematic crosshair markers */
.crosshair {
  width: 8px; height: 8px; position: absolute;
}
.crosshair::before, .crosshair::after {
  content: ""; position: absolute; background: var(--line-strong);
}
.crosshair::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.crosshair::after  { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }

/* Section labels (mono uppercase) */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fg-muted);
  font-weight: 500;
}

/* Form fields */
.field-line {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 14px 0;
  outline: none;
  width: 100%;
  color: var(--fg);
  font-size: 18px;
  font-family: var(--font-sans);
  transition: border-color 0.15s;
}
.field-line:focus { border-bottom-color: var(--accent); }
.field-line::placeholder { color: var(--fg-faint); }

textarea.field-line { resize: none; font-family: var(--font-sans); }

.field-mono {
  background: transparent;
  border: 1px solid var(--line-strong);
  padding: 12px 14px;
  outline: none;
  width: 100%;
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 13px;
  border-radius: 0;
  transition: border-color 0.15s;
}
.field-mono:focus { border-color: var(--accent); }
.field-mono::placeholder { color: var(--fg-faint); }

/* Buttons */
.btn-solid {
  background: var(--fg);
  color: var(--bg);
  padding: 16px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: background 0.15s, transform 0.15s;
}
.btn-solid:hover { background: var(--accent); }
.btn-solid:active { transform: translateY(1px); }

.btn-ghost {
  border: 1px solid var(--line-strong);
  padding: 14px 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 500;
  color: var(--fg);
  transition: background 0.15s, border-color 0.15s;
}
.btn-ghost:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

/* Status pulse dot for "available" indicator - themed (follows accent). */
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-soft);
  animation: pulse 2.4s ease-out infinite;
  flex: 0 0 auto;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0   var(--accent-soft); }
  70%  { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0   transparent; }
}

/* Schematic overlay (Tweaks "surprise" toggle) */
.x-ray-on .lp::after {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--accent) 1px, transparent 1px),
    linear-gradient(to bottom, var(--accent) 1px, transparent 1px);
  background-size: 128px 128px;
  opacity: 0.08;
  z-index: 50;
}

/* Animated link arrow on hover */
.arrow-link {
  display: inline-flex; align-items: center; gap: 8px;
  transition: color 0.15s;
}
.arrow-link svg { transition: transform 0.2s ease; }
.arrow-link:hover svg { transform: translateX(4px); }
.arrow-link:hover { color: var(--accent); }

/* Theme toggle (footer, very subtle).
   Three text buttons; the active one is fg, the others fg-faint.
   Sized to inherit from whatever footer container it sits in. */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  line-height: 1;
}
.theme-toggle > button {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  color: var(--fg-faint);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  transition: color 0.15s;
}
.theme-toggle > button:hover { color: var(--fg); }
.theme-toggle > button[aria-pressed="true"] { color: var(--fg); }
.theme-toggle > .sep { color: var(--fg-ghost); user-select: none; }

/* Language switcher */
.v1-lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}
.v1-lang-sep { color: var(--fg-muted); user-select: none; }
.v1-lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--fg-muted);
  padding: 2px 5px;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: uppercase;
  transition: color 0.15s;
}
.v1-lang-btn:hover { color: var(--accent); }
.v1-lang-btn.is-active { color: var(--fg); font-weight: 600; }