/* =========================================================
   AllocLab — Shared Mobile-First Marketing CSS
   Used by landing.html + pricing.html
   ========================================================= */

/* ---------- TOKENS ---------- */
:root {
  /* LIGHT (default for marketing) */
  --bg: #F7F6F1;
  --bg-elev: #FFFFFF;
  --bg-elev-2: #EFEDE4;
  --bg-subtle: #F0EEE6;
  --bg-inv: #0B0C0E;
  --border: #E1DED2;
  --border-strong: #C9C6BA;
  --ink: #0F1013;
  --ink-2: #2E3138;
  --ink-3: #5C606B;
  --ink-4: #8C909B;

  /* Taiwan stock — RED up, GREEN down */
  --up: #D62939;
  --up-2: #B21C2B;
  --up-soft: rgba(214,41,57,0.08);
  --up-line: rgba(214,41,57,0.25);
  --down: #1E7A4F;
  --down-2: #135A3A;
  --down-soft: rgba(30,122,79,0.08);
  --down-line: rgba(30,122,79,0.22);

  /* Accent — distinct from price red */
  --accent: #C8361B;
  --accent-2: #A22A12;
  --accent-ink: #8F2614;
  --accent-soft: rgba(200,54,27,0.08);
  --accent-line: rgba(200,54,27,0.22);
  --accent-wash: #FBEEE7;

  /* Severity distinct from price */
  --sev-error: #B83232;
  --sev-warn:  #B8860B;
  --sev-info:  #1F66B8;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 2px rgba(15,16,19,0.05);
  --shadow-md: 0 8px 24px rgba(15,16,19,0.07), 0 2px 4px rgba(15,16,19,0.04);
  --shadow-lg: 0 24px 64px -16px rgba(15,16,19,0.14), 0 6px 16px rgba(15,16,19,0.06);

  --font-sans: 'Noto Sans TC', -apple-system, "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-serif: 'Noto Serif TC', 'Noto Sans TC', serif;
  --font-mono: 'IBM Plex Mono', 'Noto Sans TC', monospace;
  --font-display: var(--font-sans);

  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bot: env(safe-area-inset-bottom, 0px);
}

[data-theme="dark"] {
  --bg: #0B0C0E;
  --bg-elev: #14161A;
  --bg-elev-2: #1B1E23;
  --bg-subtle: #111317;
  --bg-inv: #F7F6F1;
  --border: #262A31;
  --border-strong: #353A44;
  --ink: #EEF1F5;
  --ink-2: #C5CBD5;
  --ink-3: #8A909C;
  --ink-4: #5A6070;

  --up: #FF4E5C;
  --up-2: #E03B44;
  --up-soft: rgba(255,78,92,0.12);
  --up-line: rgba(255,78,92,0.22);
  --down: #3EC48C;
  --down-2: #2EA875;
  --down-soft: rgba(62,196,140,0.10);
  --down-line: rgba(62,196,140,0.22);

  --accent: #E85A3C;
  --accent-2: #FF7F62;
  --accent-ink: #FF8E74;
  --accent-soft: rgba(232,90,60,0.12);
  --accent-line: rgba(232,90,60,0.32);
  --accent-wash: rgba(232,90,60,0.08);

  --sev-error: #F25C7D;
  --sev-warn:  #E5A53C;
  --sev-info:  #5AA7F5;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.25);
  --shadow-lg: 0 24px 64px -16px rgba(0,0,0,0.6), 0 8px 16px rgba(0,0,0,0.3);
}

/* accent variants */
[data-accent="orange"] { --accent: #D97757; --accent-2: #C05F40; --accent-ink: #8F4026; --accent-soft: rgba(217,119,87,0.09); --accent-line: rgba(217,119,87,0.25); --accent-wash: #FBEDE4; }
[data-theme="dark"][data-accent="orange"] { --accent: #E88E6A; --accent-2: #FFA689; --accent-ink: #FFB497; --accent-soft: rgba(232,142,106,0.12); --accent-line: rgba(232,142,106,0.32); }
[data-accent="blue"] { --accent: #2F6BC4; --accent-2: #1F56A8; --accent-ink: #1E4E9A; --accent-soft: rgba(47,107,196,0.09); --accent-line: rgba(47,107,196,0.25); --accent-wash: #E7F0FB; }
[data-theme="dark"][data-accent="blue"] { --accent: #5792E0; --accent-2: #7AABEA; --accent-ink: #8FBBF0; --accent-soft: rgba(87,146,224,0.12); --accent-line: rgba(87,146,224,0.32); }
[data-accent="purple"] { --accent: #7340B8; --accent-2: #5D309E; --accent-ink: #4E2884; --accent-soft: rgba(115,64,184,0.09); --accent-line: rgba(115,64,184,0.25); --accent-wash: #EEE5F9; }
[data-theme="dark"][data-accent="purple"] { --accent: #9A6AE0; --accent-2: #B187EC; --accent-ink: #BD99EF; --accent-soft: rgba(154,106,224,0.12); --accent-line: rgba(154,106,224,0.32); }

[data-font="serif"]  { --font-display: var(--font-serif); }
[data-font="mono-heavy"] { --font-display: var(--font-mono); }

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }

.num { font-variant-numeric: tabular-nums; font-family: var(--font-mono); letter-spacing: -0.005em; }

/* ---------- LAYOUT ---------- */
.wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) { .wrap { padding: 0 32px; } }
@media (min-width: 1080px){ .wrap { padding: 0 40px; } }

section { padding: 56px 0; position: relative; }
@media (min-width: 768px) { section { padding: 88px 0; } }
@media (min-width: 1080px){ section { padding: 112px 0; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

.h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 8vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0;
  text-wrap: pretty;
}
.h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 5.2vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0;
  text-wrap: balance;
}
.h3 {
  font-size: clamp(18px, 3vw, 22px);
  line-height: 1.25; font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}
.lede {
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.62;
  color: var(--ink-2);
  margin: 0;
  text-wrap: pretty;
}

.em-under {
  position: relative; display: inline-block;
  color: var(--accent-ink);
}
.em-under::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.02em;
  height: 0.22em; background: var(--accent-soft);
  z-index: -1; border-radius: 2px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 20px;
  border-radius: 12px; border: 1px solid transparent;
  font-family: inherit; font-size: 15px; font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer; transition: transform 0.15s, background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 4px 12px -2px var(--accent-line);
}
.btn-primary:hover { background: var(--accent-2); }
.btn-ghost {
  background: transparent; color: var(--ink);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: var(--bg-elev-2); }
.btn-inv {
  background: var(--bg-inv); color: var(--bg);
}
.btn-sm { min-height: 40px; padding: 0 14px; font-size: 13px; border-radius: 10px; }

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: 56px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  height: 100%;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 15px; letter-spacing: -0.01em;
  color: var(--ink);
}
.logo-mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 14px; font-weight: 700;
}
.nav-links { display: none; gap: 4px; }
.nav-links a {
  padding: 8px 14px; border-radius: 8px;
  font-size: 14px; color: var(--ink-2); font-weight: 500;
}
.nav-links a:hover { background: var(--bg-elev-2); color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 8px; }
.nav-login { display: none; font-size: 14px; color: var(--ink-2); padding: 8px 10px; }
.nav-hamburger {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 10px;
  background: transparent; border: 1px solid var(--border);
  color: var(--ink);
}

@media (min-width: 768px) { .nav { height: 64px; } }
@media (min-width: 1080px) {
  .nav-links { display: inline-flex; }
  .nav-login { display: inline-flex; }
  .nav-hamburger { display: none; }
}

/* Mobile menu drawer */
.mobile-menu {
  position: fixed; inset: 56px 0 0 0; z-index: 49;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 20px;
  transform: translateY(-8px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
.mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a {
  display: flex; align-items: center; min-height: 48px;
  padding: 0 8px;
  font-size: 17px; font-weight: 500;
  color: var(--ink); border-bottom: 1px solid var(--border);
}
.mobile-menu-ctas { margin-top: 20px; display: grid; gap: 10px; }
@media (min-width: 1080px) { .mobile-menu { display: none; } }

/* ---------- COMMON CARD ---------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
@media (min-width: 768px) { .card { padding: 24px; } }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--bg-elev-2); color: var(--ink-2);
  border: 1px solid var(--border);
}
.chip-accent { background: var(--accent-soft); color: var(--accent-ink); border-color: var(--accent-line); }
.chip-up { background: var(--up-soft); color: var(--up); border-color: var(--up-line); }
.chip-down { background: var(--down-soft); color: var(--down); border-color: var(--down-line); }

.code-label {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-4);
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg-elev-2);
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  color: var(--ink-3);
  font-size: 13px;
}
.footer-grid {
  display: grid; gap: 32px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}
.footer h4 {
  font-size: 11px; font-family: var(--font-mono);
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--ink-4); margin: 0 0 14px;
}
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-links a:hover { color: var(--ink); }
.footer-bottom {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  color: var(--ink-4); font-size: 12px;
}

.disclaimer {
  padding: 20px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--ink-3);
  font-size: 12.5px; line-height: 1.65;
}
.disclaimer strong { color: var(--ink); font-weight: 600; }

/* ---------- TWEAKS PANEL ---------- */
.tweaks-fab {
  position: fixed; right: 16px; bottom: 16px; z-index: 120;
  min-width: 44px; min-height: 44px; padding: 0 14px;
  border-radius: 999px;
  background: var(--bg-inv); color: var(--bg);
  border: 0; box-shadow: var(--shadow-lg);
  display: none; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600;
}
.tweaks-fab.show { display: inline-flex; }
.tweaks-panel {
  position: fixed; right: 16px; bottom: 72px; z-index: 121;
  width: 260px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 14px; padding: 16px;
  box-shadow: var(--shadow-lg);
  display: none;
}
.tweaks-panel.open { display: block; }
.tweak-group + .tweak-group { margin-top: 14px; }
.tweak-group > label {
  display: block; font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-4); margin-bottom: 8px; font-weight: 600;
}
.tweak-opts { display: flex; gap: 6px; flex-wrap: wrap; }
.tweak-opts button {
  min-height: 34px; padding: 0 12px;
  border-radius: 8px; border: 1px solid var(--border);
  background: transparent; color: var(--ink-2);
  font-size: 12px; font-weight: 500;
}
.tweak-opts button.active {
  background: var(--accent); color: #fff; border-color: var(--accent);
}

/* ---------- UTILS ---------- */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
.grid-5 { grid-template-columns: 1fr; }
@media (min-width: 560px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-5 { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .grid-5 { grid-template-columns: repeat(5, 1fr); }
  .grid { gap: 20px; }
}

.hide-mobile { display: none; }
@media (min-width: 768px) { .hide-mobile { display: initial; } }
.only-mobile { }
@media (min-width: 768px) { .only-mobile { display: none !important; } }