/* ============================================================
   IsaacOriginals — Clean, Grounded, Masculine
   Kingdom-first. Cinematic. Premium. Simple.
   ============================================================ */

:root {
  --bg: #0A0A0A;
  --bg-soft: #111111;
  --bg-card: #141414;
  --bg-line: rgba(255, 255, 255, 0.08);
  --ink: #F5F5F5;
  --ink-muted: #6B6760;
  --accent: #FFFFFF;
}

/* K.I.T. warm overrides */
.kit-theme {
  --accent: #D4A24C;
  --bg-line: rgba(212, 162, 76, 0.12);
}

html { scroll-behavior: smooth; background: var(--bg); }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(255, 255, 255, 0.2); color: #fff; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

/* ===================== NAV ===================== */

.glass-nav {
  background: rgba(10, 10, 10, 0.9);
  border-bottom: 1px solid var(--bg-line);
}

.nav-link {
  position: relative;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: color 200ms ease, background 200ms ease;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.nav-link[aria-current="page"] {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

/* ===================== CARDS ===================== */

.card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  transition: border-color 250ms ease, transform 250ms ease;
  position: relative;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.kit-theme .card:hover {
  border-color: rgba(212, 162, 76, 0.2);
}

/* ===================== LOADING SEQUENCE ===================== */

.page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 600ms ease, visibility 600ms ease;
}
.page-loader.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.delta-loader-wrap {
  position: relative;
  width: 100px;
  opacity: 0;
  animation: deltaFadeIn 0.8s ease 0.2s forwards;
}
.delta-loader-wrap img {
  width: 100%;
  height: auto;
  display: block;
}
.delta-loader-wrap::after {
  content: "";
  position: absolute;
  inset: -20%;
  background: linear-gradient(
    105deg,
    transparent 25%,
    rgba(255,255,255,0.0) 40%,
    rgba(255,255,255,0.4) 48%,
    rgba(255,255,255,0.6) 50%,
    rgba(255,255,255,0.4) 52%,
    rgba(255,255,255,0.0) 60%,
    transparent 75%
  );
  background-size: 300% 100%;
  animation: glareSweep 1.4s ease-in-out 0.6s forwards;
  background-position: 150% 0;
  pointer-events: none;
}

@keyframes deltaFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes glareSweep {
  from { background-position: 150% 0; }
  to { background-position: -100% 0; }
}

/* ===================== HERO ===================== */

.hero-line {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.hero-line.typed { opacity: 1; transform: none; }

/* ===================== TYPOGRAPHY ===================== */

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  opacity: 0.6;
}

.h-display {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.verse {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 300;
  letter-spacing: 0.01em;
  color: var(--ink);
  border-left: 2px solid rgba(255, 255, 255, 0.15);
  padding-left: 1.25rem;
}
.kit-theme .verse { border-left-color: var(--accent); }

.accent-underline {
  background-image: linear-gradient(90deg, rgba(255,255,255,0.3), transparent);
  background-repeat: no-repeat;
  background-size: 100% 1px;
  background-position: 0 100%;
  padding-bottom: 2px;
}

/* ===================== STATUS ===================== */

.dot {
  width: 8px; height: 8px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.4);
  display: inline-block;
}
.dot-active {
  background: #fff;
  box-shadow: 0 0 6px rgba(255,255,255,0.3);
}
.dot-dim {
  background: rgba(255,255,255,0.2);
}
.kit-theme .dot { background: var(--accent); }

/* ===================== UTILITIES ===================== */

.rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
}

.hair-top { border-top: 1px solid rgba(255,255,255,0.06); }

/* Film grain — subtle texture */
.grain::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.015;
  mix-blend-mode: overlay;
  z-index: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.9'/></svg>");
}

/* ===================== REVEAL ===================== */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 500ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-line { opacity: 1; transform: none; }
}

/* Video placeholder */
.video-16x9 {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: rgba(255,255,255,0.02);
  border: 1px dashed rgba(255,255,255,0.06);
  border-radius: 10px;
  overflow: hidden;
}
.video-16x9 > * {
  position: absolute; inset: 0; width: 100%; height: 100%;
}