/* ═══ LEONUX DESIGN TOKENS ════════════════════════════════════════════════ */
:root {
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;

  /* Surfaces */
  --bg-base: #0B0D0F;
  --bg-surface: #15171B;
  --bg-surface-raised: #1C1F23;
  --bg-glass: rgba(21, 23, 27, 0.60);
  --bg-glass-heavy: rgba(12, 14, 17, 0.86);
  --bg-glass-soft: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.07);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-base: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);

  /* Accents */
  --primary: #5B9DFA;
  --primary-dim: #3A7BD5;
  --primary-glow: rgba(91, 157, 250, 0.35);
  --primary-soft: rgba(91, 157, 250, 0.12);
  --accent-purple: #9D7AFA;
  --accent-green: #5EE29A;
  --accent-amber: #FAB95B;
  --accent-red: #F28B82;

  /* Text Scale */
  --text-primary: #F4F5F7;
  --text-secondary: #9CA3AF;
  --text-tertiary: #5C6270;

  /* Spacing */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Motion */
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --ease-soft: cubic-bezier(.16, 1, .3, 1);
  --ease-snap: cubic-bezier(.4, 0, .2, 1);
  --dur-fast: 0.15s;
  --dur-base: 0.3s;
  --dur-slow: 0.6s;

  /* Layout Variables */
  --hdr-h: 64px;
  --tb-h: 48px;
}

/* ═══ RESET & FOUNDATIONS ════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  height: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: clamp(14px, 1.5vw, 16px); /* Fluid Typography Base */
}
body {
  width: 100vw;
  height: 100dvh;
  overflow: hidden;
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
}
button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  font: inherit;
  border: none;
  background: none;
  color: inherit;
}
textarea, input {
  font: inherit;
  border: none;
  background: none;
  color: inherit;
  resize: none;
  outline: none;
}
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: var(--radius-pill); border: 2px solid var(--bg-base); }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* Material Symbols */
.material-symbols-rounded {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  font-size: 20px;
}

/* ═══ COMPONENTS ════════════════════════════════════════════════════════ */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  height: 40px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  transition: transform var(--dur-base) var(--ease-spring), box-shadow var(--dur-base) var(--ease-spring), background var(--dur-fast) var(--ease-soft), border-color var(--dur-fast) var(--ease-soft), color var(--dur-fast) var(--ease-soft);
  white-space: nowrap;
}
.btn:active { transform: scale(0.96); }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--primary-dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-secondary {
  background: var(--bg-glass-soft);
  border: 1px solid var(--border-base);
  color: var(--text-primary);
  backdrop-filter: blur(16px);
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--bg-glass-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--text-secondary);
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  color: var(--text-primary);
  background: var(--bg-glass-soft);
}

.btn-icon {
  width: 40px;
  padding: 0;
  border-radius: var(--radius-pill);
}

.btn-sm {
  height: 32px;
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}
.btn-sm.btn-icon {
  width: 32px;
}

/* Modals */
.lx-modal-backdrop {
  position: fixed; inset: 0; z-index: 1050;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-2);
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-soft);
}
.lx-modal-backdrop.open { opacity: 1; pointer-events: auto; }

.lx-modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 48px rgba(0,0,0,0.4), 0 0 0 1px var(--border-base);
  width: 100%; max-width: 600px; max-height: 85vh;
  display: flex; flex-direction: column;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--dur-base) var(--ease-spring);
}
.lx-modal-backdrop.open .lx-modal-box { transform: scale(1) translateY(0); }

.lx-modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
}
.lx-modal-title { font-weight: 600; font-size: 1.125rem; display: flex; align-items: center; gap: 8px; color: var(--text-primary); }
.lx-modal-body { flex: 1; overflow-y: auto; padding: var(--space-3); color: var(--text-secondary); font-size: 0.875rem; line-height: 1.6; }
.lx-modal-foot { padding: var(--space-2) var(--space-3); border-top: 1px solid var(--border-subtle); display: flex; justify-content: flex-end; gap: var(--space-1); }

/* Toasts */
#toast {
  position: fixed; bottom: var(--space-4); right: var(--space-4); z-index: 9999;
  background: var(--bg-glass-heavy); border: 1px solid var(--border-base);
  border-radius: var(--radius-md); padding: var(--space-1) var(--space-2);
  font-size: 0.875rem; font-weight: 500; color: var(--text-primary);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5); backdrop-filter: blur(16px);
  display: flex; align-items: center; gap: 8px;
  transform: translateX(120%); transition: transform var(--dur-base) var(--ease-spring), opacity var(--dur-base) var(--ease-soft);
  opacity: 0; pointer-events: none;
}
#toast.show { transform: translateX(0); opacity: 1; pointer-events: auto; }
#toast .material-symbols-rounded { font-size: 18px; }

/* ═══ APP LAYOUT ═════════════════════════════════════════════════════════ */
#app {
  display: flex; flex-direction: column; height: 100dvh;
}
.workspace {
  flex: 1; display: flex; overflow: hidden; min-height: 0; position: relative;
}

/* HEADER */
.hdr {
  height: var(--hdr-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(var(--space-2), 3vw, var(--space-4));
  background: var(--bg-glass-heavy);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100; flex-shrink: 0;
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: var(--space-2); user-select: none; }
.brand-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 16px;
  box-shadow: 0 4px 12px var(--primary-glow);
}
.brand-name {
  font-size: 1.125rem; font-weight: 700; letter-spacing: -0.02em; color: var(--text-primary);
}
.brand-badge {
  font-size: 0.65rem; font-weight: 600; padding: 2px 8px; border-radius: var(--radius-pill);
  background: var(--primary-soft); color: var(--primary); letter-spacing: 0.05em; text-transform: uppercase;
}
.view-switch { display: none; align-items: center; gap: 4px; padding: 4px; background: var(--bg-surface-raised); border-radius: var(--radius-pill); }
.controls { display: flex; align-items: center; gap: var(--space-1); }

/* EDITOR PANEL */
.ed-panel {
  flex: 0 0 45%;
  display: flex; flex-direction: column;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  overflow: hidden; z-index: 10;
}
.ed-hdr {
  height: 48px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--space-2);
  background: var(--bg-surface-raised);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500;
  color: var(--text-secondary); user-select: none;
}
.toolbar {
  display: flex; align-items: center; gap: 2px; padding: 6px var(--space-2);
  background: var(--bg-surface); border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto; flex-shrink: 0;
}
.toolbar::-webkit-scrollbar { display: none; }
.toolbar { scrollbar-width: none; }

#editor {
  flex: 1; width: 100%; padding: var(--space-3);
  background: transparent; color: var(--text-primary);
  font-family: var(--font-mono); font-size: 0.875rem; line-height: 1.7;
  caret-color: var(--primary); tab-size: 2;
}
#editor::selection { background: var(--primary-soft); color: #fff; }

.status {
  height: 36px; display: flex; align-items: center; gap: var(--space-2);
  padding: 0 var(--space-2); background: var(--bg-surface-raised);
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-secondary);
}
.s-ok { color: var(--accent-green); }
.s-err { color: var(--accent-red); }
.s-warn { color: var(--accent-amber); }

/* DIVIDER */
.divider {
  flex: 0 0 1px; background: var(--border-strong); cursor: col-resize;
  position: relative; z-index: 20; transition: background 0.15s;
}
.divider::after { content: ''; position: absolute; inset: 0 -4px; }
.divider:hover, .divider.dragging { background: var(--primary); }

/* CANVAS PREVIEW */
.canvas {
  flex: 1; display: flex; flex-direction: column; overflow: hidden; position: relative;
  background: radial-gradient(circle at 50% 0%, rgba(91, 157, 250, 0.1) 0%, var(--bg-base) 70%);
}
.canvas-hdr {
  position: absolute; top: 0; left: 0; right: 0; z-index: 10;
  height: 48px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--space-3);
  background: linear-gradient(180deg, var(--bg-base) 0%, transparent 100%);
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500;
  color: var(--text-secondary); pointer-events: none;
}
.canvas-scroll {
  flex: 1; overflow-y: auto; padding: calc(48px + var(--space-3)) var(--space-4) var(--space-8);
  -webkit-overflow-scrolling: touch;
}
.card.spotlight {
  margin: 0 auto;
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-base);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  padding: var(--space-6) clamp(var(--space-4), 5vw, var(--space-8));
  width: 100%; max-width: 800px;
  position: relative; overflow: hidden;
  transition: transform var(--dur-base) var(--ease-spring), box-shadow var(--dur-base) var(--ease-spring);
}
.card.spotlight:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 0 1px var(--border-strong);
}
/* Spotlight effect pseudoelement (handled via JS) */
.card.spotlight::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: -1;
  background: radial-gradient(800px circle at var(--x, 50%) var(--y, 50%), rgba(255,255,255,0.06), transparent 40%);
}

/* PROSE STYLING */
.prose { font-family: var(--font-sans); color: var(--text-secondary); line-height: 1.8; font-size: 1rem; }
.prose h1, .prose h2, .prose h3, .prose h4 { color: var(--text-primary); font-weight: 700; line-height: 1.3; margin: 1.5em 0 0.5em; letter-spacing: -0.01em; }
.prose h1 { font-size: 2.25rem; font-weight: 800; border-bottom: 1px solid var(--border-subtle); padding-bottom: 0.3em; }
.prose h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border-subtle); padding-bottom: 0.3em; }
.prose h3 { font-size: 1.25rem; }
.prose p { margin: 1em 0; }
.prose strong { font-weight: 600; color: var(--text-primary); }
.prose a { color: var(--primary); text-decoration: none; transition: color 0.15s; }
.prose a:hover { color: var(--primary-dim); text-decoration: underline; }
.prose code { background: var(--bg-surface-raised); color: var(--primary); padding: 0.2em 0.4em; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.85em; border: 1px solid var(--border-subtle); }
.prose pre { background: var(--bg-base); padding: var(--space-2); border-radius: var(--radius-lg); border: 1px solid var(--border-base); overflow-x: auto; margin: 1.5em 0; }
.prose pre code { background: transparent; border: none; padding: 0; color: var(--text-secondary); }
.prose blockquote { border-left: 3px solid var(--primary); background: var(--bg-glass-soft); padding: var(--space-2) var(--space-3); border-radius: 0 var(--radius-md) var(--radius-md) 0; margin: 1.5em 0; color: var(--text-primary); font-style: italic; }
.prose ul, .prose ol { padding-left: var(--space-3); margin: 1em 0; }
.prose li { margin: 0.25em 0; }
.prose hr { border: none; border-top: 1px solid var(--border-base); margin: 2em 0; }

/* Callouts / Admonitions */
.prose .zl-callout { border-left: 3px solid var(--primary); background: var(--primary-soft); border-radius: 0 var(--radius-md) var(--radius-md) 0; padding: var(--space-2) var(--space-3); margin: 1.5em 0; }
.prose .zl-callout-title { font-weight: 600; color: var(--primary); margin-bottom: 0.2em; display: flex; align-items: center; gap: 8px; }
.prose .zl-callout-body { color: var(--text-secondary); font-size: 0.95em; }
.prose .zl-callout-tip { border-left-color: var(--accent-green); background: rgba(94, 226, 154, 0.05); }
.prose .zl-callout-tip .zl-callout-title { color: var(--accent-green); }
.prose .zl-callout-warning { border-left-color: var(--accent-amber); background: rgba(250, 185, 91, 0.05); }
.prose .zl-callout-warning .zl-callout-title { color: var(--accent-amber); }
.prose .zl-callout-danger { border-left-color: var(--accent-red); background: rgba(242, 139, 130, 0.05); }
.prose .zl-callout-danger .zl-callout-title { color: var(--accent-red); }

/* Admonitions (Boxes) */
.prose .zl-admonition { border: 1px solid var(--border-base); border-radius: var(--radius-lg); margin: 1.1em 0; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.prose .zl-admonition-header { display: flex; align-items: center; gap: 0.5em; padding: 0.65em 1em; font-weight: 700; font-size: 0.88em; background: var(--primary-soft); color: var(--primary); border-bottom: 1px solid var(--border-base); }
.prose .zl-admonition-body { padding: 0.9em 1.1em; color: var(--text-secondary); background: var(--bg-surface-raised); }
.prose .zl-admonition-tip .zl-admonition-header, .prose .zl-admonition-success .zl-admonition-header { background: rgba(94, 226, 154, 0.1); color: var(--accent-green); }
.prose .zl-admonition-warning .zl-admonition-header, .prose .zl-admonition-caution .zl-admonition-header { background: rgba(250, 185, 91, 0.1); color: var(--accent-amber); }
.prose .zl-admonition-danger .zl-admonition-header { background: rgba(242, 139, 130, 0.1); color: var(--accent-red); }

/* Badges */
.lx-badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: var(--radius-pill); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; }
.lx-badge-blue { background: var(--primary-soft); color: var(--primary); }
.lx-badge-green { background: rgba(94, 226, 154, 0.1); color: var(--accent-green); }

/* Code blocks (Zolto specific) */
.prose .zl-cb { margin: 1.1em 0; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-base); box-shadow: 0 4px 12px rgba(0,0,0,0.3); background: var(--bg-base); }
.prose .zl-code-header { display: flex; align-items: center; gap: 0.7em; padding: 0.5em 0.9em; background: var(--bg-surface-raised); border-bottom: 1px solid var(--border-base); font-family: var(--font-mono); font-size: 0.78em; }
.prose .zl-code-lang { color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.prose .zl-code-title { color: var(--text-secondary); flex: 1; }
.prose .zl-copy { margin-left: auto; padding: 0.25em 0.7em; border-radius: var(--radius-sm); border: 1px solid var(--border-base); color: var(--text-secondary); font-size: 0.85em; transition: all 0.15s; background: none; cursor: pointer; }
.prose .zl-copy:hover { color: var(--text-primary); border-color: var(--border-strong); background: var(--bg-glass-hover); }
.prose .zl-pre { margin: 0; padding: 0.9em 0; overflow-x: auto; background: transparent; }
.prose .zl-pre code { background: none; border: none; padding: 0; font-size: 0.85rem; color: var(--text-secondary); display: block; font-family: var(--font-mono); }
.prose .zl-ln { display: block; padding: 0 1.2em; white-space: pre; }
.prose .zl-has-nums .zl-ln { padding-left: 3.6em; position: relative; }
.prose .zl-has-nums .zl-ln::before { content: attr(data-n); position: absolute; left: 0; width: 2.8em; text-align: right; color: var(--text-tertiary); user-select: none; padding-right: 0.6em; }

/* Keyboard key */
.prose kbd { font-family: var(--font-mono); font-size: 0.82em; padding: 0.18em 0.5em; background: var(--bg-surface-raised); border: 1px solid var(--border-strong); border-radius: 5px; box-shadow: 0 2px 0 var(--border-strong); color: var(--text-primary); }

/* Table */
.prose .zl-table-wrap { overflow-x: auto; margin: 1.1em 0; border-radius: var(--radius-md); border: 1px solid var(--border-base); }
.prose .zl-table { width: 100%; border-collapse: collapse; font-size: 0.9em; margin: 0; }
.prose .zl-table th { background: var(--bg-surface-raised); border-bottom: 1px solid var(--border-base); padding: 0.75em 1em; font-weight: 600; color: var(--text-primary); text-align: left; }
.prose .zl-table td { border-bottom: 1px solid var(--border-base); padding: 0.75em 1em; color: var(--text-secondary); }

/* ═══ RESPONSIVE BREAKPOINTS ═════════════════════════════════════════════ */
@media (max-width: 900px) {
  .view-switch { display: flex; }
  .brand-badge { display: none; }
  .ed-panel { flex: 1; border-right: none; }
  html[data-view="preview"] .ed-panel, html[data-view="preview"] .divider { display: none; }
  html[data-view="edit"] .canvas, html[data-view="edit"] .divider { display: none; }
  .view-switch .btn span { display: none; }
  .btn:not(.btn-icon) span { display: none; }
  .btn:not(.btn-icon) { width: 40px; padding: 0; }
  .lx-modal-box { max-width: 90vw; }
}

/* Keypad Mobile (Jio Phone ~240px width) */
@media (max-width: 320px) {
  .hdr { padding: 0 var(--space-1); gap: var(--space-1); }
  .brand-name { display: none; }
  .view-switch .btn { padding: 4px 8px; font-size: 0.7rem; width: auto; height: 32px; }
  .view-switch .btn i { font-size: 14px; }
  .toolbar { flex-wrap: nowrap; overflow-x: scroll; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
  .btn-icon { width: 36px; height: 36px; }
  .btn { width: auto; padding: 0 8px; }
  .card.spotlight { padding: var(--space-3) var(--space-2); border-radius: var(--radius-md); }
  .prose h1 { font-size: 1.5rem; }
  .prose h2 { font-size: 1.25rem; }
  #toast { left: var(--space-1); right: var(--space-1); bottom: var(--space-1); transform: translateY(120%); text-align: center; justify-content: center; }
  #toast.show { transform: translateY(0); }
}

@media print {
  .hdr, .divider, .canvas-hdr, .ed-panel, .view-switch { display: none !important; }
  .canvas { background: none !important; }
  .card.spotlight { box-shadow: none !important; border: none !important; padding: 0 !important; max-width: none !important; }
  .prose { color: #000 !important; }
  .prose h1, .prose h2, .prose h3, .prose h4 { color: #000 !important; }
}
body.exporting .card.spotlight { box-shadow: none !important; border: none !important; }