/* ============================================================
   Coderish IDE — Premium Design System
   Dark-first, glassmorphic, neon-accented stylesheet
   ============================================================ */

/* ── Google Fonts are imported in HTML ───────────────────── */

/* ── 1. CSS CUSTOM PROPERTIES (Design Tokens) ──────────────── */
:root {
  /* Palette */
  --bg-base:        #0d0e14;
  --bg-surface:     #13141d;
  --bg-elevated:    #1a1c28;
  --bg-hover:       #20223a;
  --bg-glass:       rgba(26, 28, 40, 0.7);

  --border-subtle:  rgba(99, 102, 241, 0.15);
  --border-default: rgba(99, 102, 241, 0.28);
  --border-focus:   rgba(99, 102, 241, 0.7);

  /* Accent — Indigo / Violet */
  --accent:         #6366f1;
  --accent-light:   #818cf8;
  --accent-dark:    #4f46e5;
  --accent-glow:    rgba(99, 102, 241, 0.35);

  /* Secondary — Emerald */
  --green:          #10b981;
  --green-light:    #34d399;
  --green-glow:     rgba(16, 185, 129, 0.25);

  /* State colors */
  --red:            #f87171;
  --red-glow:       rgba(248, 113, 113, 0.25);
  --yellow:         #fbbf24;
  --blue:           #38bdf8;

  /* Text */
  --text-primary:   #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted:     #475569;
  --text-accent:    var(--accent-light);

  /* Terminal */
  --term-bg:        #0a0b10;
  --term-text:      #c8ffcc;
  --term-prompt:    var(--accent-light);
  --term-error:     var(--red);
  --term-warn:      var(--yellow);
  --term-info:      var(--blue);

  /* Spacing */
  --header-h:       56px;
  --sidebar-w:      420px;
  --radius-sm:      6px;
  --radius-md:      10px;
  --radius-lg:      14px;

  /* Typography */
  --font-ui:        'Inter', system-ui, sans-serif;
  --font-mono:      'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --ease-out:       cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce:    cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast:         120ms;
  --t-med:          220ms;
  --t-slow:         380ms;
}

/* ── Light Theme Override ───────────────────────────────────── */
body.theme-light {
  --bg-base:        #f0f2f8;
  --bg-surface:     #ffffff;
  --bg-elevated:    #f8fafc;
  --bg-hover:       #eef0f6;
  --bg-glass:       rgba(255, 255, 255, 0.8);

  --border-subtle:  rgba(99, 102, 241, 0.12);
  --border-default: rgba(99, 102, 241, 0.22);

  --text-primary:   #1e293b;
  --text-secondary: #475569;
  --text-muted:     #94a3b8;

  --term-bg:        #1e1e2e;
  --term-text:      #a6e3a1;
}


/* ── 2. RESET & BASE ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { height: 100%; font-size: 15px; }

body {
  height: 100%;
  font-family: var(--font-ui);
  background: var(--bg-base);
  color: var(--text-primary);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  /* subtle grid pattern */
  background-image:
    linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* ── 3. HEADER ──────────────────────────────────────────────── */
.header {
  height: var(--header-h);
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 100;
}

/* Brand */
.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo svg { width: 36px; height: 36px; filter: drop-shadow(0 0 8px var(--accent-glow)); }

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-size: 1rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-light), #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}
.brand-tagline { font-size: 0.65rem; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; }

/* Controls row */
.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
}

/* Language selector */
.lang-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 6px 10px 6px 10px;
  cursor: pointer;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  position: relative;
}
.lang-selector:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.lang-icon { font-size: 1.1rem; line-height: 1; }
.lang-selector select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  padding-right: 20px;
}
.lang-chevron {
  color: var(--text-muted);
  width: 16px; height: 16px;
  pointer-events: none;
  position: absolute;
  right: 8px;
}

/* Font control */
.font-control {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}
.font-control button {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 4px;
  transition: background var(--t-fast), color var(--t-fast);
}
.font-control button:hover { background: var(--accent-glow); color: var(--accent-light); }
#font-size-label { font-size: 0.7rem; color: var(--text-muted); min-width: 32px; text-align: center; }

/* Icon buttons */
.icon-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  padding: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.icon-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-default);
  color: var(--text-primary);
  transform: translateY(-1px);
}
.icon-btn:active { transform: translateY(0); }
.icon-btn-sm { padding: 4px; }

/* Run button */
.btn-run {
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 8px 18px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: opacity var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  box-shadow: 0 0 16px var(--accent-glow), 0 2px 6px rgba(0,0,0,0.4);
}
.btn-run:hover { transform: translateY(-1px); box-shadow: 0 0 28px var(--accent-glow), 0 4px 12px rgba(0,0,0,0.4); }
.btn-run:active { transform: translateY(0); }
.btn-run::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  pointer-events: none;
}
.btn-run.loading .run-icon,
.btn-run.loading .run-label,
.btn-run.loading .run-shortcut { opacity: 0; }
.btn-run.loading .run-spinner { display: block; }
.run-shortcut {
  font-size: 0.65rem;
  background: rgba(0,0,0,0.25);
  border-radius: 4px;
  padding: 2px 5px;
  letter-spacing: 0.03em;
}
.run-spinner {
  display: none;
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}


/* ── 4. WORKSPACE LAYOUT ────────────────────────────────────── */
.workspace {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-w);
  flex: 1;
  min-height: 0;
  overflow: hidden;
}


/* ── 5. EDITOR PANE ─────────────────────────────────────────── */
.editor-pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-default);
  min-width: 0;
  overflow: hidden;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  height: 36px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.pane-tabs { display: flex; gap: 2px; height: 100%; align-items: flex-end; }
.pane-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  cursor: pointer;
  transition: color var(--t-fast), background var(--t-fast);
}
.pane-tab.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
  border-color: var(--border-subtle);
}
.pane-meta { font-size: 0.7rem; color: var(--text-muted); font-family: var(--font-mono); }

#monaco-editor {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}


/* ── 6. SIDEBAR ─────────────────────────────────────────────── */
.sidebar {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-surface);
}


/* ── 7. PANELS (Terminal & Inspector) ───────────────────────── */
.panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex: 1;
  min-height: 0;
}

.panel + .panel { border-top: 1px solid var(--border-default); }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  height: 36px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}
.panel-header-left,
.panel-header-right { display: flex; align-items: center; gap: 8px; }

.panel-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-red    { background: #f87171; }
.dot-yellow { background: #fbbf24; }
.dot-green  { background: #34d399; }

.panel-title { font-size: 0.78rem; font-weight: 600; color: var(--text-secondary); letter-spacing: 0.04em; text-transform: uppercase; }


/* ── 8. TERMINAL ────────────────────────────────────────────── */
.terminal-panel { flex: 1.4; }

.terminal-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 14px 16px;
  background: var(--term-bg);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--term-text);
  scroll-behavior: smooth;
}

.terminal-body::-webkit-scrollbar { width: 5px; }
.terminal-body::-webkit-scrollbar-track { background: transparent; }
.terminal-body::-webkit-scrollbar-thumb { background: rgba(99,102,241,0.3); border-radius: 99px; }

/* Terminal welcome line */
.terminal-welcome { margin-bottom: 4px; }
.term-prompt { color: var(--accent-light); font-weight: 700; }
.term-at, .term-sym { color: var(--text-muted); }
.term-host { color: var(--green-light); font-weight: 700; }
.term-cmd { color: var(--text-secondary); }

/* Terminal blocks */
.term-block { margin: 8px 0; }

.term-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(99,102,241,0.07);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  margin-bottom: 6px;
  font-size: 0.75rem;
}
.term-header.success { border-color: var(--green); background: rgba(16,185,129,0.07); }
.term-header.error   { border-color: var(--red);   background: rgba(248,113,113,0.07); }
.term-header.timeout { border-color: var(--yellow); background: rgba(251,191,36,0.07); }

.term-header-icon { font-size: 0.9rem; }
.term-header-lang { font-weight: 700; color: var(--accent-light); text-transform: uppercase; font-size: 0.7rem; }
.term-header-lang.success { color: var(--green-light); }
.term-header-lang.error   { color: var(--red); }
.term-header-time { margin-left: auto; color: var(--text-muted); font-size: 0.7rem; }

.term-stdout { white-space: pre-wrap; word-break: break-all; color: var(--term-text); }
.term-stderr { white-space: pre-wrap; word-break: break-all; color: var(--term-error); }
.term-empty  { color: var(--text-muted); font-style: italic; }

/* status bar under terminal */
.terminal-statusbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 14px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
#status-exit.ok   { color: var(--green-light); }
#status-exit.fail { color: var(--red); }

/* terminal badge */
.terminal-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 7px;
  border-radius: 99px;
  background: rgba(99,102,241,0.12);
  color: var(--accent-light);
  border: 1px solid var(--border-subtle);
  transition: background var(--t-med), color var(--t-med);
}
.terminal-badge.running  { background: rgba(251,191,36,0.15); color: var(--yellow); border-color: rgba(251,191,36,0.3); animation: badge-pulse 1s ease-in-out infinite; }
.terminal-badge.success  { background: rgba(16,185,129,0.15); color: var(--green-light); border-color: rgba(16,185,129,0.3); }
.terminal-badge.error    { background: rgba(248,113,113,0.15); color: var(--red); border-color: rgba(248,113,113,0.3); }


/* ── 9. MINILANG INSPECTOR ──────────────────────────────────── */
.inspector-panel { flex: 1; }
.inspector-panel[aria-hidden="true"] { display: none; }

.inspector-tabs {
  display: flex;
  gap: 2px;
}
.insp-tab {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 9px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--t-fast), color var(--t-fast);
  letter-spacing: 0.03em;
}
.insp-tab:hover { background: var(--bg-hover); color: var(--text-primary); }
.insp-tab.active {
  background: var(--accent-glow);
  color: var(--accent-light);
  box-shadow: 0 0 0 1px var(--border-focus) inset;
}

.inspector-body {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  position: relative;
}
.insp-view {
  display: none;
  position: absolute; inset: 0;
  overflow-y: auto;
  padding: 10px;
}
.insp-view.active { display: block; }

.insp-view::-webkit-scrollbar { width: 4px; }
.insp-view::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 99px; }

.insp-placeholder {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 24px;
  font-style: italic;
}

/* Inspector Tables */
.insp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}
.insp-table th {
  text-align: left;
  padding: 5px 8px;
  color: var(--text-muted);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border-subtle);
  position: sticky; top: 0;
  background: var(--bg-surface);
}
.insp-table td {
  padding: 4px 8px;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(99,102,241,0.05);
  vertical-align: top;
}
.insp-table tr:hover td { background: var(--bg-hover); }
.token-type { color: var(--accent-light); font-weight: 700; }
.token-val  { color: var(--green-light); }

/* AST list */
.ast-list { list-style: none; font-family: var(--font-mono); font-size: 0.73rem; }
.ast-list li {
  padding: 5px 8px;
  border-bottom: 1px solid rgba(99,102,241,0.05);
  color: var(--text-secondary);
  word-break: break-all;
  transition: background var(--t-fast);
}
.ast-list li:hover { background: var(--bg-hover); }
.ast-list li::before { content: '→ '; color: var(--accent); }

/* Bytecode list */
.bytecode-list { font-family: var(--font-mono); font-size: 0.75rem; }
.bc-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px;
  border-bottom: 1px solid rgba(99,102,241,0.05);
  transition: background var(--t-fast);
}
.bc-row:hover { background: var(--bg-hover); }
.bc-addr { color: var(--text-muted); min-width: 28px; font-size: 0.68rem; }
.bc-op   { color: var(--accent-light); font-weight: 700; min-width: 60px; }
.bc-arg  { color: var(--green-light); }
.bc-halt .bc-op { color: var(--red); }


/* ── 10. TOAST NOTIFICATION ─────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 0.85rem;
  color: var(--text-primary);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  backdrop-filter: blur(12px);
  z-index: 9999;
  opacity: 0;
  transition: transform var(--t-slow) var(--ease-bounce), opacity var(--t-med);
  pointer-events: none;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}


/* ── 11. KEYFRAMES ──────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.55; }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.anim-fadein { animation: fadeInUp 0.25s var(--ease-out) both; }


/* ── 12. SCROLLBARS (global) ────────────────────────────────── */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}


/* ── 13. RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 860px) {
  :root { --sidebar-w: 340px; }
  .run-shortcut { display: none; }
  .brand-tagline { display: none; }
}
@media (max-width: 640px) {
  .workspace { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
  .editor-pane { border-right: none; border-bottom: 1px solid var(--border-default); }
  :root { --sidebar-w: 100%; }
}

/* ── 14. SELECTION & FOCUS ──────────────────────────────────── */
::selection { background: var(--accent-glow); color: var(--accent-light); }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text-secondary);
}