/* =========================
   LegalAgent — Design System
   ========================= */

:root {
  /* Base palette — Anthropic-inspired warm ivory + clay accents */
  --ink: #1F1E1D;            /* deep warm charcoal — Anthropic body text */
  --ink-2: #2C2B29;
  --ink-3: #3A3937;
  --ink-line: rgba(255, 255, 255, 0.10);
  --ink-line-strong: rgba(255, 255, 255, 0.18);
  --paper: #FAF9F5;          /* near-white with warm tint */
  --paper-2: #F2EFE6;        /* warm cream secondary */
  --paper-3: #E8E3D2;        /* muted cream */
  --paper-line: rgba(31, 30, 29, 0.12);
  --paper-line-strong: rgba(31, 30, 29, 0.22);

  /* Type colors */
  --on-ink: #F0EEE5;
  --on-ink-mute: rgba(240, 238, 229, 0.72);
  --on-ink-faint: rgba(240, 238, 229, 0.48);
  --on-paper: #1F1E1D;
  --on-paper-mute: rgba(31, 30, 29, 0.66);
  --on-paper-faint: rgba(31, 30, 29, 0.42);

  /* Accent — brand red palette (used as a sparing accent) */
  --accent: #C84A5F;          /* brand red — primary accent */
  --accent-deep: #A8344A;     /* deeper red */
  --accent-soft: #E8C7CD;     /* faded rose */
  --accent-gold: #B73E54;     /* mid red for sub-accent */
  --accent-rgb: 200, 74, 95;  /* rgb tuple for rgba() use */

  /* Neutral chrome — used in place of accent for most decorative chrome,
     so the red functions as a true sparing highlight */
  --chrome: #2A2826;          /* near-ink, for kickers/labels/borders */
  --chrome-soft: rgba(31, 30, 29, 0.55);

  /* Type stacks */
  --serif-jp: "Shippori Mincho", "Noto Serif JP", "YuMincho", "Hiragino Mincho ProN", serif;
  --sans-jp: "Shippori Mincho", "Noto Serif JP", "YuMincho", "Hiragino Mincho ProN", serif;
  --serif-en: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --serif-en-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --sans-en: "Space Grotesk", "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;

  /* Layout */
  --gutter: clamp(20px, 4vw, 64px);
  --max: 1440px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans-jp);
  font-feature-settings: "palt";
  font-weight: 400;
  background: var(--paper);
  color: var(--on-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* Section helpers */
.section {
  position: relative;
  padding: clamp(80px, 10vw, 160px) var(--gutter);
}
.section--ink { background: var(--paper-2); color: var(--on-paper); }
.section--paper { background: var(--paper); color: var(--on-paper); }
.section--paper-2 { background: var(--paper-2); color: var(--on-paper); }
.section--dark { background: var(--ink); color: var(--on-ink); }
.section--dark .eyebrow,
.section--dark .label { color: var(--on-ink-mute); }
.section--dark .hairline { background: var(--ink-line); }
.container {
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}

/* Type system */
.eyebrow {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--chrome);
  display: inline-block;
  opacity: 0.7;
}
.kicker-en {
  font-family: var(--mono);
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.heading-jp {
  font-family: var(--serif-jp);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.35;
}
.body-jp {
  font-family: var(--sans-jp);
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.04em;
}
.label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 28px;
  font-family: var(--sans-jp);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
  position: relative;
}
.btn--gold {
  background: var(--accent);
  color: #F5F2EB;
}
.btn--gold:hover {
  background: var(--accent-deep);
  color: #fff;
  transform: translateY(-1px);
}
.btn--ghost-light {
  background: transparent;
  color: var(--on-ink);
  border: 1px solid var(--ink-line-strong);
}
.btn--ghost-light:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn--ghost-dark {
  background: transparent;
  color: var(--on-paper);
  border: 1px solid var(--paper-line-strong);
}
.btn--ghost-dark:hover {
  border-color: var(--accent-deep);
  color: var(--accent-deep);
}
.btn .arrow {
  transition: transform 0.4s ease;
}
.btn:hover .arrow {
  transform: translateX(4px);
}

/* Hairline rules */
.hairline {
  height: 1px;
  background: var(--paper-line);
  width: 100%;
}
.section--paper .hairline {
  background: var(--paper-line);
}

/* Floating chrome — number tags */
.tag-num {
  font-family: var(--serif-en-display);
  font-weight: 500;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}
.tag-num::before {
  content: "— ";
  opacity: 0.6;
}

/* Grid utilities */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 32px;
}

/* Scroll-reveal base */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1.4s cubic-bezier(0.16, 1, 0.3, 1), transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal--delay-1.is-visible { transition-delay: 0.12s; }
.reveal--delay-2.is-visible { transition-delay: 0.24s; }
.reveal--delay-3.is-visible { transition-delay: 0.36s; }

/* Mask reveal — letterform sweep */
.reveal-mask {
  display: inline-block;
  overflow: hidden;
  position: relative;
}
.reveal-mask > * {
  display: inline-block;
  transform: translateY(105%);
  transition: transform 1.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-mask.is-visible > * {
  transform: translateY(0);
}

/* Hairline grow */
.reveal-rule {
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.4s cubic-bezier(0.5, 0, 0.2, 1);
}
.reveal-rule.is-visible { transform: scaleX(1); }

/* Hover line */
.hover-line {
  position: relative;
  display: inline-block;
}
.hover-line::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.hover-line:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Selection */
::selection {
  background: var(--accent);
  color: var(--ink);
}

/* Vertical text helper */
.vertical-jp {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--serif-jp);
}

/* Orientation/marks */
.section-mark {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}
.section-mark__line {
  flex: 0 0 36px;
  height: 1px;
  background: var(--accent);
}

/* Smooth focus ring */
:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 4px;
}

/* ===== Global mobile fixes ===== */
@media (max-width: 720px) {
  .twk-panel { display: none !important; }  /* hide design-time tweaks panel on mobile */
  .eyebrow { font-size: 11px; gap: 8px; }
  .eyebrow::before { width: 24px; }
  .tag-num { font-size: 12px; }
  .btn { padding: 14px 22px; font-size: 13px; }
}