/*
 * ============================================================
 * VirtualChem Labs — Shared Design System
 * ============================================================
 */

/* ── GOOGLE FONTS ── */
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── DESIGN TOKENS ── */
:root {
  /* Backgrounds */
  --bg-base:     #080c14;
  --bg-panel:    #0f1623;
  --bg-inset:    #050810;
  --bg-hover:    rgba(255,255,255,0.04);

  /* Text */
  --text-main:   #f1f5f9;
  --text-muted:  #64748b;
  --text-dim:    #2d3f58;

  /* Borders */
  --border:      #1a2840;
  --border-lite: #243550;

  /* Accents */
  --blue:        #38bdf8;
  --blue-dim:    rgba(56,189,248,0.1);
  --blue-hover:  #0ea5e9;
  --green:       #34d399;
  --green-dim:   rgba(52,211,153,0.1);
  --purple:      #a78bfa;
  --purple-dim:  rgba(167,139,250,0.1);
  --amber:       #fbbf24;
  --amber-dim:   rgba(251,191,36,0.1);
  --red:         #f87171;
  --red-dim:     rgba(248,113,113,0.1);

  /* Timing */
  --t-fast:  0.15s;
  --t-mid:   0.25s;
  --t-slow:  0.4s;
  --ease:    cubic-bezier(0.4, 0, 0.2, 1);

  /* Spacing scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;

  /* Font */
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Fira Code', 'Consolas', 'Courier New', monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 13px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
}

/* ── RESET ADDITIONS ── */
*, *::before, *::after { box-sizing: border-box; }

/* ── SHARED BODY BASE ── */
body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── SITE NAV (shared across all labs) ── */
.site-nav {
  position: sticky; top: 0; z-index: 200;
  height: 48px;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(11,15,26,0.9);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-body);
}

.site-nav-brand {
  font-size: var(--font-size-md);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--blue);
  text-decoration: none;
  display: flex; align-items: center; gap: var(--sp-2);
  transition: opacity var(--t-fast) var(--ease);
}
.site-nav-brand:hover { opacity: 0.8; }

.site-nav-links { display: flex; gap: var(--sp-1); }
.site-nav-links a {
  padding: 5px 12px;
  border-radius: var(--r-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.site-nav-links a:hover { color: var(--text-main); background: var(--border); }
.site-nav-links a.snav-active { color: var(--blue); background: var(--blue-dim); }

/* Organic active link */
.snav-green { color: var(--green) !important; background: var(--green-dim) !important; }
/* Inorganic active link */
.snav-purple { color: #a78bfa !important; background: rgba(167,139,250,0.1) !important; }

@media (max-width: 600px) { .site-nav-links { display: none; } }

/* ── SHARED BUTTON SYSTEM ── */
.sbtn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 7px 14px;
  border: none; border-radius: var(--r-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
  white-space: nowrap;
  -webkit-user-select: none; user-select: none;
}
.sbtn:active:not(:disabled) { transform: scale(0.97); }
.sbtn:disabled { opacity: 0.45; cursor: not-allowed; }
.sbtn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.sbtn-primary { background: var(--blue); color: #000; }
.sbtn-primary:hover:not(:disabled) { background: var(--blue-hover); box-shadow: 0 0 0 4px var(--blue-dim); }

.sbtn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.sbtn-ghost:hover:not(:disabled) { background: rgba(255,255,255,0.09); color: var(--text-main); border-color: var(--border-lite); }

.sbtn-danger { background: var(--red-dim); color: var(--red); border: 1px solid rgba(248,113,113,0.2); }
.sbtn-danger:hover:not(:disabled) { background: rgba(248,113,113,0.2); }

.sbtn-success { background: var(--green-dim); color: var(--green); border: 1px solid rgba(52,211,153,0.2); }
.sbtn-success:hover:not(:disabled) { background: rgba(52,211,153,0.2); }

/* ── SHARED PANEL ── */
.spanel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
}

/* ── SHARED INPUT / SELECT ── */
.sinput, .sselect {
  background: var(--bg-inset);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: var(--r-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  outline: none;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
  width: 100%;
}
.sinput:focus, .sselect:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-dim);
}
.sinput:disabled, .sselect:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── SHARED MODAL ── */
.smodal-backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(5, 8, 18, 0.88);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 500;
  justify-content: center; align-items: center;
  padding: var(--sp-5);
}
.smodal-backdrop.open { display: flex; }

.smodal {
  background: var(--bg-panel);
  border: 1px solid var(--border-lite);
  border-radius: var(--r-lg);
  width: 95%; max-width: 860px;
  max-height: 88vh; overflow-y: auto;
  padding: var(--sp-6);
  box-shadow: 0 24px 80px rgba(0,0,0,0.7);
}

.smodal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: var(--sp-4);
  margin-bottom: var(--sp-5);
  border-bottom: 1px solid var(--border);
}
.smodal-header h2 { font-size: var(--font-size-lg); font-weight: 700; }
.smodal-close {
  background: none; border: none;
  color: var(--text-muted); font-size: 22px; line-height: 1;
  cursor: pointer; padding: 0;
  transition: color var(--t-fast);
}
.smodal-close:hover { color: var(--text-main); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-lite); }
/* Firefox */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }

/* ── TABLE ── */
.stable { width: 100%; border-collapse: collapse; font-size: var(--font-size-sm); }
.stable th, .stable td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.stable th { color: var(--text-muted); font-weight: 600; font-size: var(--font-size-xs); text-transform: uppercase; letter-spacing: 0.06em; background: var(--bg-inset); }
.stable tbody tr:hover { background: var(--bg-hover); }
.stable td { font-family: var(--font-mono); font-size: 12px; }

/* ── CHIP / BADGE ── */
.schip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 99px;
  font-size: var(--font-size-xs); font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase;
}
.schip-blue { background: var(--blue-dim); color: var(--blue); border: 1px solid rgba(56,189,248,0.2); }
.schip-green { background: var(--green-dim); color: var(--green); border: 1px solid rgba(52,211,153,0.2); }
.schip-amber { background: var(--amber-dim); color: var(--amber); border: 1px solid rgba(251,191,36,0.2); }
.schip-red { background: var(--red-dim); color: var(--red); border: 1px solid rgba(248,113,113,0.2); }
.schip-purple { background: var(--purple-dim); color: var(--purple); border: 1px solid rgba(129,140,248,0.2); }

/* ── LOG ENTRY ── */
.slog-entry {
  padding: 6px 10px;
  margin-bottom: 8px;
  border-left: 3px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-family: var(--font-mono); font-size: 12px; line-height: 1.6;
  word-wrap: break-word;
  transition: background var(--t-fast);
}
.slog-sys { border-left-color: var(--border); color: var(--text-muted); }
.slog-act { border-left-color: var(--blue); color: var(--text-main); }
.slog-res { border-left-color: var(--green); background: rgba(52,211,153,0.05); color: #a7f3d0; }
.slog-warn { border-left-color: var(--amber); background: rgba(251,191,36,0.05); color: #fde68a; }
.slog-err { border-left-color: var(--red); background: rgba(248,113,113,0.05); color: #fca5a5; }

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

/* ── ACCESSIBILITY ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}