/* ═══════════════════════════════════════════════════════════
   playgriff.io — style.css
   Dark-theme mobile-first portfolio for a solo game developer
   ═══════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  /* Core palette */
  --clr-bg:            #0c0d14;
  --clr-bg-card:       #13151f;
  --clr-bg-card-hover: #181b28;
  --clr-surface:       #1e2133;
  --clr-border:        rgba(255,255,255,0.07);
  --clr-border-focus:  rgba(124,58,237,0.6);

  /* Brand accents */
  --clr-accent-violet: #7c3aed;
  --clr-accent-cyan:   #06b6d4;
  --clr-accent-lime:   #a3e635;
  --clr-accent-amber:  #f59e0b;
  --clr-accent-pink:   #ec4899;

  /* Gradient shortcuts */
  --grad-brand: linear-gradient(135deg, var(--clr-accent-violet), var(--clr-accent-cyan));
  --grad-card:  linear-gradient(180deg, transparent 55%, rgba(12,13,20,0.97) 100%);

  /* Text */
  --clr-text-primary:   #f1f2f7;
  --clr-text-secondary: #8892a4;
  --clr-text-muted:     #4a5260;

  /* Typography */
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body:    'Space Grotesk', system-ui, sans-serif;

  /* Spacing scale */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;

  /* Radius */
  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-pill: 999px;

  /* Shadows / glows */
  --shadow-card:        0 4px 24px rgba(0,0,0,0.45);
  --shadow-card-hover:  0 8px 40px rgba(124,58,237,0.25);
  --glow-violet:        0 0 24px rgba(124,58,237,0.35);
  --glow-cyan:          0 0 24px rgba(6,182,212,0.30);

  /* Transitions */
  --ease-snappy: cubic-bezier(0.22, 0.68, 0, 1.2);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:   150ms;
  --dur-normal: 280ms;
  --dur-slow:   450ms;
}

/* ── RESET & BASE ───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text-primary);
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ── BACKGROUND CANVAS ─────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

/* ── LAYOUT WRAPPER ────────────────────────────────────────── */
.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* ── SITE HEADER ────────────────────────────────────────────── */
.site-header {
  padding: var(--space-2xl) var(--space-md) var(--space-xl);
  text-align: center;
}

.header-inner {
  max-width: 680px;
  margin: 0 auto;
}

/* Logo group */
.logo-group {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.logo-icon svg {
  display: block;
}

.site-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.dot-io {
  opacity: 0.7;
}

.site-tagline {
  font-size: clamp(0.9rem, 3.5vw, 1.1rem);
  color: var(--clr-text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

/* Stat pills */
.header-pills {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 1px solid var(--clr-border);
  backdrop-filter: blur(8px);
}

.pill--games {
  background: rgba(124,58,237,0.15);
  border-color: rgba(124,58,237,0.3);
  color: #c4b5fd;
}

.pill--status {
  background: rgba(6,182,212,0.1);
  border-color: rgba(6,182,212,0.25);
  color: #67e8f9;
}

/* ── FILTER BAR ─────────────────────────────────────────────── */
.filter-bar {
  padding: 0 var(--space-md) var(--space-lg);
}

.filter-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-xs);
}

.filter-inner::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  flex-shrink: 0;
  padding: 10px var(--space-lg);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1.5px solid var(--clr-border);
  color: var(--clr-text-secondary);
  background: var(--clr-surface);
  transition:
    background var(--dur-fast) var(--ease-smooth),
    border-color var(--dur-fast) var(--ease-smooth),
    color var(--dur-fast) var(--ease-smooth),
    box-shadow var(--dur-fast) var(--ease-smooth);
  min-height: 44px; /* Touch target */
}

.filter-btn:hover {
  border-color: rgba(124,58,237,0.5);
  color: #c4b5fd;
  background: rgba(124,58,237,0.1);
}

.filter-btn.active {
  background: var(--clr-accent-violet);
  border-color: var(--clr-accent-violet);
  color: #fff;
  box-shadow: 0 0 18px rgba(124,58,237,0.4);
}

/* ── GAMES SECTION ──────────────────────────────────────────── */
.games-section {
  padding: 0 var(--space-md) var(--space-2xl);
}

.games-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

/* 2-col on tablets */
@media (min-width: 600px) {
  .games-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 3-col on desktop */
@media (min-width: 1000px) {
  .games-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── GAME CARD ──────────────────────────────────────────────── */
.game-card {
  display: flex;
  flex-direction: column;
  background: var(--clr-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition:
    transform var(--dur-normal) var(--ease-snappy),
    box-shadow var(--dur-normal) var(--ease-smooth),
    border-color var(--dur-normal) var(--ease-smooth),
    background var(--dur-normal) var(--ease-smooth);
  will-change: transform;
}

.game-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(124,58,237,0.4);
  background: var(--clr-bg-card-hover);
}

/* Card thumbnail */
.card-thumb-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--clr-surface);
}

.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-smooth);
}

.game-card:hover .card-thumb {
  transform: scale(1.06);
}

.card-thumb-overlay {
  position: absolute;
  inset: 0;
  background: var(--grad-card);
}

/* Status badge */
.card-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
}

.badge--alpha {
  background: rgba(124,58,237,0.75);
  color: #e9d5ff;
}

.badge--poc {
  background: rgba(245,158,11,0.75);
  color: #fef3c7;
}

.badge--live {
  background: rgba(163,230,53,0.25);
  color: #bef264;
  border-color: rgba(163,230,53,0.4);
}

/* Card body */
.card-body {
  flex: 1;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-genre {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-accent-cyan);
}

.card-platform {
  font-size: 1rem;
  opacity: 0.8;
}

.card-title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 4vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--clr-text-primary);
  line-height: 1.2;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
  line-height: 1.65;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-xs);
}

.tag {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(255,255,255,0.06);
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
  transition: background var(--dur-fast), color var(--dur-fast);
}

.game-card:hover .tag {
  background: rgba(124,58,237,0.12);
  color: #a78bfa;
  border-color: rgba(124,58,237,0.25);
}

/* Card footer */
.card-footer {
  padding: 0 var(--space-md) var(--space-md);
}

/* Play button */
.play-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  min-height: 52px;           /* Generous touch target */
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  background: var(--grad-brand);
  border: 1px solid rgba(124,58,237,0.5);
  box-shadow: 0 2px 12px rgba(124,58,237,0.3);
  transition:
    filter var(--dur-fast) var(--ease-smooth),
    transform var(--dur-fast) var(--ease-snappy),
    box-shadow var(--dur-fast) var(--ease-smooth);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}

/* Shimmer sweep on hover */
.play-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 30%, rgba(255,255,255,0.18) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.55s var(--ease-smooth);
}

.play-btn:hover::after {
  transform: translateX(120%);
}

.play-btn:hover {
  filter: brightness(1.15);
  box-shadow: 0 4px 22px rgba(124,58,237,0.55);
}

.play-btn:active {
  transform: scale(0.97);
  filter: brightness(0.95);
}

/* Live variant — cyan accent */
.play-btn--live {
  background: linear-gradient(135deg, #0891b2, var(--clr-accent-lime));
  border-color: rgba(6,182,212,0.5);
  box-shadow: 0 2px 12px rgba(6,182,212,0.3);
}

.play-btn--live:hover {
  box-shadow: 0 4px 22px rgba(6,182,212,0.5);
}

.play-icon {
  font-size: 0.75em;
  display: inline-block;
  transform: scale(1.2);
  transition: transform var(--dur-fast) var(--ease-snappy);
}

.play-btn:hover .play-icon {
  transform: scale(1.4) translateX(2px);
}

/* ── CARD HIDDEN STATE (for filter) ─────────────────────────── */
.game-card.hidden {
  display: none;
}

/* ── SITE FOOTER ────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--clr-border);
  padding: var(--space-lg) var(--space-md);
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  transition: color var(--dur-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-link:hover {
  color: var(--clr-accent-cyan);
}

/* ── FOCUS STYLES (accessibility) ──────────────────────────── */
:focus-visible {
  outline: 2px solid var(--clr-accent-violet);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── REDUCED MOTION ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── PAGE EXIT / ENTER TRANSITION CURTAIN ───────────────────────
   Shared by index.html for navigating to and from game.html.
   app.js adds .pg-exit-active to trigger the dark fade-out.
   On return, it starts opaque then fades away (matched with
   the sessionStorage flag set in game.js exitToHub()).
   ──────────────────────────────────────────────────────────────*/
.page-exit-curtain {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #0c0d14;
  pointer-events: none;    /* invisible to interaction when transparent */
  opacity: 0;
  transition: opacity 0.34s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Active state: curtain drops in (fade to black before navigating) */
.page-exit-curtain.pg-exit-active {
  opacity: 1;
  pointer-events: all;
}