@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ═══════════════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════════════ */
:root,
html[data-theme="dark"] {
  --nd-bg: hsl(225, 15%, 8%);
  --nd-surface-1: hsl(225, 12%, 12%);
  --nd-surface-2: hsl(225, 10%, 16%);
  --nd-surface-3: hsl(225, 8%, 20%);
  --nd-header-bg: hsla(225, 15%, 7%, 0.75);
  --nd-dropdown-bg: hsla(225, 12%, 10%, 0.94);
  
  --nd-text: hsl(0, 0%, 96%);
  --nd-text-secondary: hsl(225, 10%, 62%);
  --nd-text-muted: hsl(225, 8%, 45%);
  --nd-btn-text-on-accent: hsl(225, 15%, 8%);

  --triny-accent: hsl(355, 78%, 52%);
  --triny-accent-hover: hsl(355, 78%, 58%);
  --triny-glow: hsla(355, 78%, 52%, 0.2);
  --triny-glow-strong: hsla(355, 78%, 52%, 0.35);

  --corner-accent: hsl(45, 95%, 55%);
  --corner-accent-hover: hsl(45, 95%, 62%);
  --corner-accent-text: hsl(45, 95%, 55%);
  --corner-glow: hsla(45, 95%, 55%, 0.2);
  --corner-glow-soft: hsla(45, 95%, 55%, 0.1);
  --corner-badge-bg: hsla(45, 95%, 55%, 0.12);
  --corner-badge-border: hsla(45, 95%, 55%, 0.25);

  --nd-border: hsla(225, 15%, 100%, 0.07);
  --nd-border-hover: hsla(225, 15%, 100%, 0.15);
  --nd-shadow: rgba(0, 0, 0, 0.5);
  --nd-shadow-elevated: rgba(0, 0, 0, 0.7);

  --nd-overlay: linear-gradient(180deg, hsla(225, 20%, 4%, 0.75) 0%, hsla(225, 20%, 6%, 0.6) 40%, hsla(225, 20%, 4%, 0.85) 100%);
  --nd-vignette: radial-gradient(ellipse at center, transparent 40%, hsla(225, 20%, 3%, 0.7) 100%);
}

html[data-theme="light"] {
  --nd-bg: hsl(220, 15%, 97%);
  --nd-surface-1: hsl(220, 12%, 92%);
  --nd-surface-2: hsl(220, 10%, 86%);
  --nd-surface-3: hsl(220, 8%, 80%);
  --nd-header-bg: hsla(220, 15%, 98%, 0.75);
  --nd-dropdown-bg: hsla(220, 12%, 100%, 0.94);
  
  --nd-text: hsl(225, 20%, 12%);
  --nd-text-secondary: hsl(220, 10%, 40%);
  --nd-text-muted: hsl(220, 8%, 55%);
  --nd-btn-text-on-accent: hsl(0, 0%, 100%);

  --triny-accent: hsl(355, 72%, 48%);
  --triny-accent-hover: hsl(355, 72%, 42%);
  --triny-glow: hsla(355, 72%, 48%, 0.12);
  --triny-glow-strong: hsla(355, 72%, 48%, 0.22);

  --corner-accent: hsl(40, 90%, 42%);
  --corner-accent-hover: hsl(40, 90%, 36%);
  --corner-accent-text: hsl(40, 90%, 36%);
  --corner-glow: hsla(40, 90%, 42%, 0.12);
  --corner-glow-soft: hsla(40, 90%, 42%, 0.06);
  --corner-badge-bg: hsla(40, 90%, 42%, 0.1);
  --corner-badge-border: hsla(40, 90%, 42%, 0.2);

  --nd-border: hsla(220, 15%, 0%, 0.07);
  --nd-border-hover: hsla(220, 15%, 0%, 0.15);
  --nd-shadow: rgba(0, 0, 0, 0.06);
  --nd-shadow-elevated: rgba(0, 0, 0, 0.12);

  --nd-overlay: linear-gradient(180deg, hsla(220, 10%, 97%, 0.65) 0%, hsla(220, 10%, 97%, 0.45) 40%, hsla(220, 10%, 97%, 0.75) 100%);
  --nd-vignette: radial-gradient(ellipse at center, transparent 40%, hsla(220, 10%, 97%, 0.5) 100%);
}

/* ═══════════════════════════════════════════════
   GLOBAL RESET
   ═══════════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: var(--nd-bg);
  color: var(--nd-text);
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease, color 0.4s ease;
}

a { color: inherit; text-decoration: none; }

/* ═══════════════════════════════════════════════
   ANIMATIONS & UTILITIES
   ═══════════════════════════════════════════════ */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes subtleFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes pulseGlow { 0%, 100% { box-shadow: 0 2px 12px var(--corner-glow); } 50% { box-shadow: 0 4px 24px var(--corner-glow), 0 0 48px var(--corner-glow-soft); } }
@keyframes parallaxDrift { 0% { transform: scale(1.08) translate(0, 0); } 50% { transform: scale(1.08) translate(-8px, -4px); } 100% { transform: scale(1.08) translate(0, 0); } }

.anim-delay-1 { animation-delay: 0.1s; } .anim-delay-2 { animation-delay: 0.25s; }
.anim-delay-3 { animation-delay: 0.4s; } .anim-delay-4 { animation-delay: 0.55s; }
.anim-delay-5 { animation-delay: 0.7s; } .anim-delay-6 { animation-delay: 0.85s; }

.anim-fade-in-up { opacity: 0; animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.anim-fade-in { opacity: 0; animation: fadeIn 0.6s ease forwards; }

/* ═══════════════════════════════════════════════
   BUTTONS (General Presets)
   ═══════════════════════════════════════════════ */
.nd-btn, .nd-steam-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nd-btn:active, .nd-steam-btn:active { transform: translateY(0); }

/* Sizes */
.nd-btn {
  padding: 0.65rem 1.5rem;
  border-radius: 10px;
  font-size: 0.85rem;
}
.nd-steam-btn {
  padding: 0.35rem 0.9rem 0.35rem 0.6rem;
  border-radius: 8px;
  font-size: 0.78rem;
}

/* Variants */
.nd-btn--primary {
  background: var(--corner-accent);
  color: var(--nd-btn-text-on-accent);
  box-shadow: 0 4px 16px var(--corner-glow);
}
.nd-btn--primary:hover {
  background: var(--corner-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--corner-glow), 0 0 16px var(--corner-glow-soft);
}

.nd-btn--ghost {
  background: var(--nd-surface-2);
  color: var(--nd-text);
  border-color: var(--nd-border);
}
.nd-btn--ghost:hover {
  background: var(--nd-surface-3);
  border-color: var(--nd-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--nd-shadow);
}

.nd-steam-btn {
  background: var(--triny-accent);
  color: var(--nd-btn-text-on-accent);
}
.nd-steam-btn:hover {
  background: var(--triny-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--triny-glow-strong);
}

/* Base Icons for Buttons/Selectors */
.nd-btn__icon, .nd-selector__icon {
  display: inline-block;
  background-color: currentColor;
  -webkit-mask-size: contain; mask-size: contain;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-position: center; mask-position: center;
}
.nd-btn__icon { width: 16px; height: 16px; }
.nd-steam-btn__icon { width: 16px; height: 16px; }

.nd-icon-play { -webkit-mask-image: url('/assets/images/png/play_outline.png'); }
.nd-icon-external { -webkit-mask-image: url('/assets/images/png/external_link.png'); }
.nd-icon-theme { -webkit-mask-image: url('/assets/images/png/theme.png'); }
.nd-icon-lang { -webkit-mask-image: url('/assets/images/png/language.png'); }

/* ═══════════════════════════════════════════════
   PAGE SWAP TRANSITIONS
   ═══════════════════════════════════════════════ */
#app-main, main {
  transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.page-transition-out {
  opacity: 0 !important;
  transform: translateY(-8px) scale(0.995) !important;
}

/* ═══════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════ */
.nd-hero { position: relative; width: 100vw; height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.nd-hero__bg { position: absolute; top: -4%; left: -4%; width: 108%; height: 108%; object-fit: cover; z-index: 1; animation: parallaxDrift 30s ease-in-out infinite; }
.nd-hero__overlay { position: absolute; inset: 0; background: var(--nd-overlay); z-index: 2; }
.nd-hero__vignette { position: absolute; inset: 0; background: var(--nd-vignette); z-index: 3; pointer-events: none; }

.nd-hero__content {
  position: relative; z-index: 4; width: 92%; max-width: 780px; max-height: calc(100vh - 80px);
  margin-top: 30px; padding: 2.2rem 2.6rem 1.8rem; background: var(--nd-surface-1);
  border: 1px solid var(--nd-border); border-radius: 18px; box-shadow: 0 20px 60px var(--nd-shadow-elevated);
  text-align: center; display: flex; flex-direction: column; align-items: center; overflow-y: auto;
}
.nd-hero__content::-webkit-scrollbar { width: 3px; }
.nd-hero__content::-webkit-scrollbar-thumb { background: var(--nd-border-hover); border-radius: 3px; }

/* Typography & Tags */
.nd-studio-tag { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.25rem 0.8rem; background: var(--triny-glow); border: 1px solid var(--triny-glow-strong); border-radius: 50px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.8px; color: var(--triny-accent); margin-bottom: 0.5rem; }
.nd-studio-tag__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--triny-accent); animation: subtleFloat 3s ease-in-out infinite; }

.nd-game-badge { display: inline-block; padding: 0.25rem 0.9rem; background: var(--corner-badge-bg); border: 1px solid var(--corner-badge-border); border-radius: 50px; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--corner-accent-text); margin-bottom: 0.6rem; animation: pulseGlow 4s ease-in-out infinite; }

.nd-hero__title { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; letter-spacing: -1.5px; color: var(--nd-text); margin-bottom: 0.2rem; line-height: 1.05; }
.nd-hero__release { font-size: 0.9rem; font-weight: 700; color: var(--corner-accent-text); margin-bottom: 0.7rem; letter-spacing: 0.5px; }
.nd-hero__desc { font-size: 0.88rem; font-weight: 400; color: var(--nd-text-secondary); line-height: 1.7; max-width: 580px; margin-bottom: 1.4rem; }
.nd-hero__desc strong { color: var(--nd-text); font-weight: 600; }

.nd-divider { width: 48px; height: 2px; background: var(--corner-accent); border-radius: 2px; margin: 0.5rem 0; opacity: 0.5; }

/* Hero Widgets & Buttons */
.nd-actions { display: flex; align-items: center; justify-content: center; gap: 0.9rem; margin-bottom: 1.4rem; flex-wrap: wrap; }
.nd-widgets { display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: center; width: 100%; }

/* Widget Wrapper & Skeleton Loader */
.nd-widget-wrapper {
  position: relative;
  display: inline-block;
  width: 646px;
  max-width: 100%;
  height: 190px;
  border-radius: 8px;
  overflow: hidden;
}

.nd-widget-skeleton {
  position: absolute;
  inset: 0;
  background: var(--nd-surface-2);
  border: 1px solid var(--nd-border);
  border-radius: 8px;
  z-index: 10;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.35s ease, visibility 0.35s ease;
  overflow: hidden;
  pointer-events: none;
}

.nd-widget-skeleton.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.nd-skeleton-shimmer {
  position: absolute;
  top: 0; left: -100%; width: 200%; height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    hsla(225, 15%, 100%, 0.08) 40%,
    hsla(225, 15%, 100%, 0.15) 50%,
    hsla(225, 15%, 100%, 0.08) 60%,
    transparent 100%
  );
  animation: skeletonShimmer 1.4s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes skeletonShimmer {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(50%); }
}

.nd-widget-frame {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 16px var(--nd-shadow);
  background: rgba(0, 0, 0, 0.25);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.nd-widget-frame:hover { box-shadow: 0 8px 28px var(--nd-shadow-elevated); transform: translateY(-2px); }

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .nd-hero__content {
    padding: 1.5rem 1.2rem;
    width: 95%;
  }
  .nd-hero__title {
    font-size: 1.8rem;
  }
  .nd-widget-wrapper {
    width: 100% !important;
    max-width: 320px;
  }
  .nd-widget-frame {
    width: 100% !important;
    max-width: 320px;
  }
}