/* ============================================================
   Kitsune AI — Homepage-specific styles
   Shared chrome (nav, footer, buttons, reveal, sections) lives
   in site.css. This file holds only homepage-unique sections:
   hero · rationale flip-cards · foundry diagram · modes · intake
   ============================================================ */

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; min-height: 100vh; overflow: hidden;
  display: flex; flex-direction: column; justify-content: center;
  padding: 140px clamp(24px, 6vw, 96px) 80px;
}
.hero__grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(to right, var(--kit-slate-200) 1px, transparent 1px),
    linear-gradient(to bottom, var(--kit-slate-200) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 90% 75% at 30% 35%, #000 0%, transparent 78%);
          mask-image: radial-gradient(ellipse 90% 75% at 30% 35%, #000 0%, transparent 78%);
  opacity: .55;
}
.hero__trail { position: absolute; top: 0; left: 0; right: 0; height: 100%; z-index: 1; pointer-events: none; }
.hero__inner { position: relative; z-index: 2; max-width: 1248px; margin: 0 auto; width: 100%; }

.hero__title { margin-top: 10px; }
.hero__title .line { display: block; }
.hero__title em { font-style: italic; }
.hero__sub {
  margin-top: 30px; max-width: 46ch;
  font-size: clamp(18px, 1.7vw, 23px); color: var(--fg-2); line-height: 1.5;
}
.hero__cta { margin-top: 40px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }

.hero__scroll {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px; z-index: 2;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-3);
}
.hero__scroll i {
  width: 1px; height: 38px;
  background: linear-gradient(to bottom, var(--kit-slate-400), transparent);
  position: relative; overflow: hidden;
}
.hero__scroll i::after {
  content: ""; position: absolute; top: -10px; left: 0; width: 1px; height: 12px;
  background: var(--kit-fox-500); animation: scrolldot 1.9s var(--ease-in-out) infinite;
}
@keyframes scrolldot { 0% { top: -12px; } 70%,100% { top: 40px; } }

/* ============================================================
   RATIONALE
   ============================================================ */
.rationale__copy {
  max-width: 1248px; margin: 0 auto clamp(32px, 4vw, 52px);
  display: grid; grid-template-columns: 1fr 1fr; gap: 22px 64px;
}
.rationale__copy p { font-size: var(--fs-body-lg); line-height: 1.65; }
.rationale__copy strong { color: var(--fg-1); font-weight: 600; }

.cards {
  max-width: 1248px; margin: 0 auto; position: relative;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
/* Friction→Flow as an ambient backdrop behind the four cards */
.mo-flow.mo-flow--bg {
  position: absolute; inset: -8% -4%; width: auto; height: auto; z-index: 0; opacity: .42;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 50%, #000 50%, transparent 86%);
          mask-image: radial-gradient(120% 100% at 50% 50%, #000 50%, transparent 86%);
}
.flip { position: relative; z-index: 1; perspective: 1400px; height: 300px; cursor: pointer; outline: none; }
.flip__inner {
  position: relative; width: 100%; height: 100%;
  transition: transform .72s var(--ease-kinetic); transform-style: preserve-3d;
}
.flip:hover .flip__inner, .flip.is-flipped .flip__inner, .flip:focus-visible .flip__inner { transform: rotateY(180deg); }
.flip__face {
  position: absolute; inset: 0; border-radius: var(--r-lg);
  -webkit-backface-visibility: hidden; backface-visibility: hidden;
  padding: 26px; display: flex; flex-direction: column;
}
.flip__front { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.flip__idx { font-family: var(--font-mono); font-size: 12px; color: var(--kit-fox-500); letter-spacing: 0.1em; }
.flip__label { margin-top: 6px; font-size: 14px; font-weight: 600; color: var(--fg-2); }
.flip__stat {
  margin-top: auto; font-family: var(--font-display);
  font-size: clamp(44px, 4vw, 58px); line-height: 1; letter-spacing: -0.02em; color: var(--fg-1);
}
.flip__stat small { font-size: 0.42em; color: var(--fg-3); font-family: var(--font-sans); letter-spacing: 0; }
.flip__cap { margin-top: 14px; font-size: 13.5px; color: var(--fg-3); line-height: 1.45; }
.flip__hint { margin-top: 16px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--kit-electric-500); text-transform: uppercase; }
.flip__back {
  background: var(--kit-ink); color: #fff; transform: rotateY(180deg);
  border: 1px solid var(--kit-ink);
}
.flip__back-src { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--kit-slate-400); }
.flip__back p { margin-top: 12px; font-size: 14.5px; line-height: 1.5; color: var(--kit-slate-200); }
.flip__pov { margin-top: auto; padding-top: 16px; border-top: 1px solid #2a2e38; font-size: 13.5px; line-height: 1.5; color: #fff; }
.flip__pov span { display: block; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--kit-fox-300); margin-bottom: 6px; }

/* ============================================================
   FOUNDRY DIAGRAM
   ============================================================ */
.method.section { padding-top: clamp(52px, 6vw, 88px); padding-bottom: clamp(52px, 6vw, 88px); }
.method { background: var(--bg-sunken); max-width: none; }
.method > * { max-width: 1440px; margin-left: auto; margin-right: auto; }
.foundry { max-width: 1200px; margin: 0 auto; }
.foundry__svg { width: 100%; height: auto; overflow: visible; }
.foundry__node rect { fill: #fff; stroke: var(--border); stroke-width: 1.5; }
.foundry__node[data-side="out"] rect { fill: var(--kit-ink); stroke: var(--kit-ink); }
.foundry__kicker { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; fill: var(--kit-slate-400); }
.foundry__kicker--out { fill: var(--kit-slate-500); }
.foundry__node[data-side="out"] .foundry__nodetext { fill: #fff; }
.foundry__node[data-side="out"] .foundry__kicker--out { fill: var(--kit-fox-300); }
.foundry__nodetext { font-family: var(--font-sans); font-size: 19px; font-weight: 600; fill: var(--fg-1); }
.foundry__corelabel { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em; fill: var(--fg-3); }

.foundry__paths path {
  stroke-dasharray: 6 10; stroke-dashoffset: 0; opacity: .25;
  transition: opacity .6s var(--ease-out);
}
.foundry.is-in .foundry__paths path { opacity: 1; animation: flow 1.1s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -32; } }
.foundry__spark { transform-box: fill-box; transform-origin: center; }
.foundry.is-in .foundry__spark { animation: sparkspin 9s var(--ease-in-out) infinite; }
@keyframes sparkspin { 0%,100% { transform: rotate(0deg) scale(1); } 50% { transform: rotate(180deg) scale(1.08); } }
.foundry__ring { opacity: .5; }
.foundry.is-in .foundry__ring { animation: pulse 3.2s var(--ease-in-out) infinite; }
@keyframes pulse { 0%,100% { opacity: .35; r: 58px; } 50% { opacity: .8; r: 62px; } }

/* ============================================================
   THREE MODES
   ============================================================ */
.modes__grid { max-width: 1248px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mode {
  position: relative; background: #fff; border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 34px 30px 30px;
  display: flex; flex-direction: column; min-height: 320px;
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.mode:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.mode__num { font-family: var(--font-mono); font-size: 12px; color: var(--fg-mute); letter-spacing: 0.1em; }
.mode__title { margin-top: 14px; font-size: 22px; line-height: 1.15; }
.mode p { margin-top: 14px; font-size: 15px; line-height: 1.55; flex: 1; }
.mode__tag { margin-top: 20px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.05em; color: var(--fg-3); text-transform: uppercase; }
.mode--feature {
  background: var(--kit-ink); border-color: var(--kit-ink); color: #fff;
  box-shadow: var(--shadow-lg);
}
.mode--feature .mode__num { color: var(--kit-fox-300); }
.mode--feature .mode__title { color: #fff; }
.mode--feature p { color: var(--kit-slate-300); }
.mode--feature::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--r-xl); padding: 1.5px;
  background: var(--kit-gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; opacity: .9;
}
.mode__pill {
  margin-top: 20px; display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.04em; text-transform: uppercase;
  color: #fff; background: rgba(255,255,255,0.06); border: 1px solid #2a2e38;
  padding: 7px 13px; border-radius: var(--r-pill);
}
.mode__pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--kit-fox-500); box-shadow: 0 0 0 0 var(--kit-fox-500); animation: livedot 2s var(--ease-out) infinite; }

/* ============================================================
   INTAKE TERMINAL (DARK)
   ============================================================ */
.intake { background: var(--kit-ink); max-width: none; color: var(--fg-1); overflow: hidden; }
.intake > * { position: relative; z-index: 1; max-width: 1440px; margin-left: auto; margin-right: auto; }
.intake__grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000, transparent 75%);
}
.intake__paths {
  max-width: 1000px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px;
}
.path {
  display: grid; grid-template-columns: 160px 1fr auto; align-items: center; gap: 20px;
  padding: 22px 26px; border: 1px solid #232734; border-radius: var(--r-lg);
  background: rgba(255,255,255,0.02); text-decoration: none;
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.path:hover { border-color: var(--kit-fox-700); background: rgba(238,77,31,0.06); transform: translateX(4px); text-decoration: none; }
.path__seg { font-family: var(--font-sans); font-size: 18px; font-weight: 600; color: #fff; }
.path__prompt { font-family: var(--font-mono); font-size: 14px; color: var(--kit-slate-400); }
.path__dollar { color: var(--kit-fox-500); margin-right: 8px; }
.path__cta { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--kit-electric-300); white-space: nowrap; }
.path__cta i { transition: transform var(--dur-base) var(--ease-out); }
.path:hover .path__cta { color: #fff; }
.path:hover .path__cta i { transform: translateX(5px); }

.intake__terminal { margin: clamp(48px, 6vw, 72px) auto 0; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 26px; }
.intake__line { font-family: var(--font-display); font-size: clamp(24px, 3vw, 38px); color: #fff; letter-spacing: -0.02em; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  /* fluid hero type — overrides the desktop inline px so nothing overflows */
  .hero__title .line { font-size: clamp(34px, 8.5vw, 92px) !important; width: auto !important; line-height: 1.02 !important; }
  .hero__title .line .kit-grad-text { font-size: inherit !important; }
  .hero__sub { width: auto !important; max-width: 52ch !important; font-size: clamp(16px, 2.4vw, 22px) !important; }
}
@media (max-width: 1024px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .modes__grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .hero { padding-left: 22px; padding-right: 22px; }
  .hero__title .line { font-size: clamp(30px, 9.2vw, 56px) !important; }
  .hero__sub { font-size: 17px !important; margin-top: 22px; }
  .hero__cta { margin-top: 28px; }
}
@media (max-width: 720px) {
  .rationale__copy { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .flip { height: 300px; }
  .path { grid-template-columns: 1fr; gap: 8px; }
  .path__cta { justify-self: start; }
  .hero__title em { display: inline; }
}