/* ============================================================
   REIGNANCE STUDIOS — THEME LAYER
   Light/dark tokens, theme toggle, logo presentation.
   Load AFTER the page's inline styles.
============================================================ */

:root {
  --on-accent: #07080a;
  --ghost-bg: rgba(255,255,255,0.04);
  --hover-bg: rgba(255,255,255,0.05);
  --nav-bg: rgba(10,11,13,0.82);
  color-scheme: dark;
}

/* ---------- LIGHT THEME TOKENS ---------- */
html[data-theme="light"] {
  --bg:        #edeff2;
  --bg-1:      #e4e7eb;
  --bg-2:      #f9fafb;
  --bg-3:      #dadde3;
  --line:      rgba(15,17,21,0.10);
  --line-2:    rgba(15,17,21,0.20);
  --fg:        #16181d;
  --fg-2:      #4b505b;
  --fg-3:      #6a6f79;
  --fg-4:      #b6bac1;

  --accent:      oklch(0.42 0.022 250);
  --accent-2:    oklch(0.30 0.026 250);
  --accent-soft: oklch(0.42 0.03 250 / 0.10);
  --accent-glow: oklch(0.42 0.03 250 / 0.20);
  --metal:       linear-gradient(168deg, #383d45 0%, #6d737e 38%, #2b2f35 62%, #51565f 100%);

  --on-accent: #f5f6f8;
  --ghost-bg: rgba(15,17,21,0.05);
  --hover-bg: rgba(15,17,21,0.06);
  --nav-bg: rgba(240,242,245,0.85);
  color-scheme: light;
}

/* Smooth cross-fade when switching themes */
html.theme-anim body,
html.theme-anim .nav.scrolled,
html.theme-anim section,
html.theme-anim footer {
  transition: background-color 0.45s ease, color 0.45s ease, border-color 0.45s ease;
}

/* ---------- LIGHT-MODE FIXES ---------- */
html[data-theme="light"] body::after {
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image:
    repeating-radial-gradient(circle at 20% 30%, rgba(10,12,16,0.55) 0 1px, transparent 1px 3px),
    repeating-radial-gradient(circle at 70% 60%, rgba(10,12,16,0.45) 0 1px, transparent 1px 4px);
}
html[data-theme="light"] .hero-grid {
  background-image:
    linear-gradient(rgba(15,17,21,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,17,21,0.06) 1px, transparent 1px);
}
html[data-theme="light"] .hero-title { text-shadow: none; }
html[data-theme="light"] .hero-title em { filter: drop-shadow(0 2px 14px rgba(15,17,21,0.18)); }
html[data-theme="light"] .brand-mark img,
html[data-theme="light"] .foot-brand img,
html[data-theme="light"] .fe-mark,
html[data-theme="light"] .pre-mark {
  filter: brightness(0.82) contrast(1.12) drop-shadow(0 1px 3px rgba(15,17,21,0.35));
}
html[data-theme="light"] .hero-watermark { opacity: 0.07; }
html[data-theme="light"] .stack-col:hover { box-shadow: 0 14px 32px rgba(15,17,21,0.12); }
html[data-theme="light"] .case-img {
  background-image: repeating-linear-gradient(45deg, transparent 0 18px, rgba(15,17,21,0.05) 18px 19px);
}

/* ---------- THEME TOGGLE ---------- */
.theme-toggle {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-2); border-radius: 50%;
  color: var(--fg-2); flex-shrink: 0;
  transition: color 0.3s, border-color 0.3s, background 0.3s, transform 0.3s var(--ease, ease);
}
.theme-toggle:hover { color: var(--fg); background: var(--hover-bg); transform: rotate(15deg); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .tt-sun { display: block; }
.theme-toggle .tt-moon { display: none; }
html[data-theme="light"] .theme-toggle .tt-sun { display: none; }
html[data-theme="light"] .theme-toggle .tt-moon { display: block; }

/* ---------- NAV LOGO MOTION ---------- */
.brand-mark img { transition: transform 0.6s var(--ease, ease), filter 0.6s; }
.brand:hover .brand-mark img {
  transform: rotate(-14deg) scale(1.1);
  filter: brightness(1.25) drop-shadow(0 0 10px var(--accent-glow));
}
html[data-theme="light"] .brand:hover .brand-mark img {
  filter: brightness(0.9) contrast(1.15) drop-shadow(0 2px 8px rgba(15,17,21,0.4));
}
@media (prefers-reduced-motion: no-preference) {
  @keyframes mark-in { from { transform: rotate(-100deg) scale(0.5); opacity: 0; } }
  .nav .brand-mark img { animation: mark-in 1s var(--ease, ease) 0.1s backwards; }
}

/* ---------- HERO WATERMARK ---------- */
.hero-watermark {
  position: absolute; z-index: 0;
  top: 50%; right: -4vw;
  width: min(44vw, 700px);
  opacity: 0.055;
  pointer-events: none; user-select: none;
  transform: translateY(-50%);
}
.hero-watermark img { width: 100%; height: auto; }
@media (prefers-reduced-motion: no-preference) {
  .hero-watermark { animation: wm-drift 16s ease-in-out infinite alternate; }
  @keyframes wm-drift {
    from { transform: translateY(-52%) rotate(-1.5deg); }
    to   { transform: translateY(-47%) rotate(2deg); }
  }
}
@media (max-width: 980px) { .hero-watermark { width: 70vw; right: -18vw; opacity: 0.04; } }

/* ---------- FOOTER EMBLEM ---------- */
.foot-emblem {
  display: flex; align-items: center; gap: 32px;
  margin-bottom: 56px;
}
.foot-emblem .fe-line { flex: 1; height: 1px; background: var(--line); }
.foot-emblem .fe-mark {
  width: 60px; height: 60px; object-fit: contain;
  transition: transform 0.8s var(--ease, ease), filter 0.8s;
}
.foot-emblem:hover .fe-mark { transform: rotate(180deg); filter: brightness(1.2); }

/* ---------- LOADING SCREEN ---------- */
#preloader {
  position: fixed; inset: 0; z-index: 3000;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s;
}
#preloader.gone { opacity: 0; visibility: hidden; pointer-events: none; }
.pre-inner { display: flex; flex-direction: column; align-items: center; gap: 22px; }
.pre-mark { width: 76px; height: 76px; object-fit: contain; }
.pre-word {
  font-family: var(--display, sans-serif); font-weight: 700; font-size: 15px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg);
}
.pre-word span { font-family: var(--mono, monospace); font-size: 10px; font-weight: 400; color: var(--fg-3); letter-spacing: 0.16em; }
.pre-bar { width: 140px; height: 1px; background: var(--line-2); overflow: hidden; }
.pre-bar i { display: block; width: 40%; height: 100%; background: var(--accent); }
@media (prefers-reduced-motion: no-preference) {
  .pre-mark { animation: pre-pulse 1.4s ease-in-out infinite; }
  @keyframes pre-pulse {
    0%, 100% { transform: scale(0.97); filter: brightness(1); }
    50% { transform: scale(1.04); filter: brightness(1.22) drop-shadow(0 0 18px var(--accent-glow)); }
  }
  .pre-bar i { animation: pre-slide 1.1s var(--ease-2, ease-in-out) infinite; }
  @keyframes pre-slide {
    from { transform: translateX(-110%); }
    to   { transform: translateX(360%); }
  }
}

/* ---------- SECTION SNAP SCROLLING ---------- */
@media (prefers-reduced-motion: no-preference) and (min-width: 768px) {
  html.snap-scroll { scroll-snap-type: y proximity; }
  html.snap-scroll section[data-screen-label] { scroll-snap-align: start; }
}