/* GroundPound.ai — site theme (Field & Sky) */
:root {
  --brg-700: #004225;
  --brg-500: #0E5C3A;
  --brg-300: #29805A;
  --brg-100: #A7F3D0;
  --field:   #072E1F;
  --field-2: #051F15;
  --sky-300: #7DB7E8;
  --sky-500: #3F89CC;
  --sky-100: #DDEEF9;
  --coral-500: #E85D3C;
  --coral-700: #BC4527;
  --coral-100: #FBDFD7;
  --paper:   #FAF6F2;
  --ink:     #0A1A14;
  --silver-100: #F1EEEB;
  --silver-300: #C9C2BB;
  --silver-500: #7A746E;
  --silver-700: #4A4540;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(7,46,31,0.06), 0 1px 1px rgba(7,46,31,0.04);
  --shadow-md: 0 6px 18px -6px rgba(7,46,31,0.18), 0 2px 4px rgba(7,46,31,0.06);
  --shadow-lg: 0 24px 48px -16px rgba(7,46,31,0.22), 0 8px 16px -8px rgba(7,46,31,0.12);
  --duration-snap: 1.6s;
  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  font-size: 16px;
}
body[data-theme="dark"] { background: var(--field); color: var(--paper); }

/* Type */
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--brg-700); }
body[data-theme="dark"] .eyebrow { color: var(--brg-100); }
.display { font-size: clamp(40px, 6vw, 80px); font-weight: 800; letter-spacing: -0.025em; line-height: 1.02; margin: 0; }
.display .pound { color: var(--coral-500); }
.h1 { font-size: clamp(28px, 3.5vw, 44px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; margin: 0; }
.h2 { font-size: clamp(22px, 2.4vw, 30px); font-weight: 800; letter-spacing: -0.015em; line-height: 1.2; margin: 0; }
.lede { font-size: clamp(17px, 1.5vw, 20px); color: var(--brg-700); line-height: 1.55; margin: 0; max-width: 56ch; }
body[data-theme="dark"] .lede { color: var(--brg-100); }
.muted { color: var(--silver-500); }
body[data-theme="dark"] .muted { color: var(--brg-100); opacity: 0.75; }
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* Wordmark — values trace directly to
   branding/branding-v2/groundpound-design-system.html §2 Wordmark.
   Anchor at 48px display size: letter-spacing -1.2px = -0.025em,
   .ai 0.6em (= 28.8px) with 4px margin-left and 0.05em vertical-align.
   Don't drift these — the React Wordmark component's Tailwind classes
   match these one-for-one and the design-system HTML is the authority. */
.wordmark { font-weight: 800; letter-spacing: -0.025em; }
.wordmark .ground { color: var(--brg-700); }
.wordmark .pound  { color: var(--coral-500); }
.wordmark .ai     { color: var(--silver-500); font-weight: 700; font-size: 0.6em; vertical-align: 0.05em; margin-left: 4px; }
body[data-theme="dark"] .wordmark .ground { color: var(--paper); }
body[data-theme="dark"] .wordmark .ai     { color: var(--brg-100); }

/* Layout */
.shell { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .shell { padding: 0 20px; } }

/* Nav */
.nav { padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-brand .wordmark { font-size: 18px; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a:not(.btn) { color: var(--brg-700); text-decoration: none; font-weight: 500; font-size: 14px; transition: color 0.15s; }
.nav-links a:not(.btn):hover { color: var(--coral-500); }
body[data-theme="dark"] .nav-links a:not(.btn) { color: var(--paper); }
body[data-theme="dark"] .nav-links a:not(.btn):hover { color: var(--coral-500); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 600; padding: 11px 20px; border-radius: 8px; border: 1px solid transparent; cursor: pointer; text-decoration: none; transition: background 0.15s, transform 0.1s, box-shadow 0.15s; font-size: 15px; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brg-700); color: var(--paper); }
.btn-primary:hover { background: var(--brg-500); box-shadow: var(--shadow-md); }
.btn-spark { background: var(--coral-500); color: var(--paper); }
.btn-spark:hover { background: var(--coral-700); box-shadow: var(--shadow-md); }
.btn-secondary { background: transparent; color: var(--brg-700); border-color: var(--silver-300); }
.btn-secondary:hover { background: var(--silver-100); }
body[data-theme="dark"] .btn-secondary { color: var(--paper); border-color: var(--brg-500); }
body[data-theme="dark"] .btn-secondary:hover { background: var(--brg-700); }
.btn-ghost { background: transparent; color: var(--brg-700); }
.btn-ghost:hover { color: var(--coral-500); }
.btn-lg { padding: 14px 26px; font-size: 16px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* Cards */
.card { background: white; border: 1px solid var(--silver-300); border-radius: var(--radius-lg); padding: 24px; }
body[data-theme="dark"] .card { background: rgba(255,255,255,0.04); border-color: var(--brg-500); }

/* Inputs */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--brg-700); }
body[data-theme="dark"] .field label { color: var(--paper); }
.field input { font: inherit; padding: 11px 14px; border: 1px solid var(--silver-300); border-radius: 8px; background: white; color: var(--ink); font-size: 15px; transition: border-color 0.15s, box-shadow 0.15s; }
.field input:focus { outline: none; border-color: var(--brg-700); box-shadow: 0 0 0 3px rgba(0,66,37,0.15); }
body[data-theme="dark"] .field input { background: var(--field-2); border-color: var(--brg-500); color: var(--paper); }
body[data-theme="dark"] .field input:focus { border-color: var(--brg-100); box-shadow: 0 0 0 3px rgba(167,243,208,0.2); }

/* Footer */
.footer { padding: 56px 0 40px; border-top: 1px solid var(--silver-300); margin-top: 96px; font-size: 13px; color: var(--silver-500); }
body[data-theme="dark"] .footer { border-top-color: var(--brg-500); }
.footer-grid { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; align-items: center; }

/* Mark animations */
@keyframes gp-chevron-snap {
  0%, 100% { transform: translateX(0) scaleX(1); }
  30%      { transform: translateX(-1px) scaleX(0.96); }
  60%      { transform: translateX(3px) scaleX(1.02); }
  85%      { transform: translateX(0.5px) scaleX(1); }
}
.gp-snap [data-element="front-chevron"] { transform-origin: center; transform-box: fill-box; animation: gp-chevron-snap var(--duration-snap) var(--ease-snap) infinite; }
@media (prefers-reduced-motion: reduce) { .gp-snap [data-element] { animation: none !important; } }

/* Section spacing */
.section { padding: 80px 0; }
.section-tight { padding: 48px 0; }

/* Pill / badge */
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 5px 11px; border-radius: 99px; background: var(--sky-100); color: var(--sky-500); border: 1px solid rgba(63,137,204,0.2); }
.pill.sky { background: var(--sky-100); color: var(--sky-500); }
.pill.brg { background: var(--brg-100); color: var(--brg-700); }
.pill.coral { background: var(--coral-100); color: var(--coral-700); }

a { color: var(--brg-700); }
body[data-theme="dark"] a { color: var(--brg-100); }