/* ============================================================
   Syrma Arcade – design tokens & themes
   ============================================================ */

:root {
  color-scheme: dark;

  /* --- surfaces --------------------------------------------------- */
  --bg-0:            #06060f;
  --bg-1:            #0a0a18;
  --bg-2:            #10102a;
  --bg-elevated:     #16163a;
  --card-bg:         #14142e;
  --card-bg-hover:   #1b1b40;
  --surface-glass:   rgba(255, 255, 255, 0.045);
  --surface-glass-2: rgba(255, 255, 255, 0.075);
  --overlay:         rgba(4, 4, 12, 0.78);

  /* --- lines & text ----------------------------------------------- */
  --border-color:       rgba(255, 255, 255, 0.09);
  --border-color-hover: rgba(255, 255, 255, 0.22);
  --text-main:          #e9ebff;
  --text-soft:          #b9bee0;
  --text-muted:         #8b90b8;
  --text-faint:         #5e6390;

  /* --- accents (overridden per theme) ------------------------------ */
  --accent-color:  #7b61ff;
  --accent-hover:  #8f79ff;
  --accent-soft:   rgba(123, 97, 255, 0.16);
  --accent-2:      #22d3ee;
  --accent-2-soft: rgba(34, 211, 238, 0.16);
  --accent-grad:   linear-gradient(135deg, #7b61ff 0%, #22d3ee 100%);
  --accent-text:   #ffffff;

  /* --- semantic ---------------------------------------------------- */
  --ok:      #34d399;
  --ok-soft: rgba(52, 211, 153, 0.14);
  --warn:      #fbbf24;
  --warn-soft: rgba(251, 191, 36, 0.14);
  --danger:      #f43f5e;
  --danger-soft: rgba(244, 63, 94, 0.14);
  --info:      #38bdf8;
  --info-soft: rgba(56, 189, 248, 0.14);
  --gold:    #ffd166;

  /* --- geometry ----------------------------------------------------- */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;

  /* --- elevation ----------------------------------------------------- */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
  --glow:      0 0 0 1px var(--accent-soft), 0 8px 32px -6px var(--accent-soft);

  /* --- motion --------------------------------------------------------- */
  --t-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-base: 220ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 420ms cubic-bezier(0.16, 1, 0.3, 1);

  /* --- layout --------------------------------------------------------- */
  --header-h:  64px;
  --sidebar-w: 254px;
  --maxw:      1720px;

  --font-ui: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --font-display: "Orbitron", "Inter", system-ui, sans-serif;
}

/* ---------------- accent variants ---------------- */

html[data-accent="neon"] {
  --accent-color: #7b61ff;
  --accent-hover: #9280ff;
  --accent-soft:  rgba(123, 97, 255, 0.16);
  --accent-2:     #22d3ee;
  --accent-2-soft: rgba(34, 211, 238, 0.16);
  --accent-grad:  linear-gradient(135deg, #7b61ff 0%, #22d3ee 100%);
}

html[data-accent="ember"] {
  --accent-color: #ff6b35;
  --accent-hover: #ff8354;
  --accent-soft:  rgba(255, 107, 53, 0.16);
  --accent-2:     #ffd166;
  --accent-2-soft: rgba(255, 209, 102, 0.16);
  --accent-grad:  linear-gradient(135deg, #ff3d68 0%, #ffb347 100%);
}

html[data-accent="matrix"] {
  --accent-color: #22c55e;
  --accent-hover: #3ddb76;
  --accent-soft:  rgba(34, 197, 94, 0.16);
  --accent-2:     #a3e635;
  --accent-2-soft: rgba(163, 230, 53, 0.16);
  --accent-grad:  linear-gradient(135deg, #16a34a 0%, #a3e635 100%);
}

html[data-accent="magenta"] {
  --accent-color: #f72585;
  --accent-hover: #ff4c9c;
  --accent-soft:  rgba(247, 37, 133, 0.16);
  --accent-2:     #b5179e;
  --accent-2-soft: rgba(181, 23, 158, 0.16);
  --accent-grad:  linear-gradient(135deg, #f72585 0%, #7209b7 100%);
}

/* ---------------- light mode ---------------- */

html[data-mode="light"] {
  color-scheme: light;

  --bg-0:            #eef0f8;
  --bg-1:            #f5f6fb;
  --bg-2:            #ffffff;
  --bg-elevated:     #ffffff;
  --card-bg:         #ffffff;
  --card-bg-hover:   #f7f8fd;
  --surface-glass:   rgba(10, 10, 40, 0.035);
  --surface-glass-2: rgba(10, 10, 40, 0.06);
  --overlay:         rgba(20, 20, 40, 0.42);

  --border-color:       rgba(20, 20, 60, 0.12);
  --border-color-hover: rgba(20, 20, 60, 0.28);
  --text-main:  #14162e;
  --text-soft:  #3c4062;
  --text-muted: #656a90;
  --text-faint: #9096b8;

  --shadow-sm: 0 1px 4px rgba(20, 22, 60, 0.08);
  --shadow-md: 0 6px 20px rgba(20, 22, 60, 0.12);
  --shadow-lg: 0 20px 50px rgba(20, 22, 60, 0.18);
}

/* ---------------- base reset ---------------- */

*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-main);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Ambient arcade backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 620px at 12% -8%,  var(--accent-soft),   transparent 62%),
    radial-gradient(900px  560px at 92% 4%,   var(--accent-2-soft), transparent 60%),
    radial-gradient(1200px 700px at 50% 108%, var(--accent-soft),   transparent 64%),
    var(--bg-0);
  pointer-events: none;
}

/* Subtle CRT scanlines */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.35;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.018) 0px,
    rgba(255, 255, 255, 0.018) 1px,
    transparent 1px,
    transparent 3px
  );
}

html[data-mode="light"] body::after { opacity: 0.12; }
html[data-scanlines="off"] body::after { display: none; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

a { color: var(--accent-color); text-decoration: none; }
a:hover { color: var(--accent-hover); }

img, video { max-width: 100%; display: block; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

::selection { background: var(--accent-color); color: #fff; }

/* Scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--border-color-hover) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--border-color-hover);
  border-radius: var(--r-pill);
  border: 3px solid transparent;
  background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--accent-color); background-clip: content-box; }

/* Utilities */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.mono { font-family: var(--font-mono); }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  body::after { display: none; }
}