/* ═══════════════════════════════════════════════════════
   Note.md — Premium Distraction-Free Markdown Editor
   Design System & Global Styles
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Lora:ital,wght@0,400;0,500;1,400&display=swap');

/* ─── CSS Custom Properties (Design Tokens) ─────────────── */
:root {
  /* Colors */
  --clr-bg:          #0d0f14;
  --clr-surface:     #141720;
  --clr-surface-2:   #1c2030;
  --clr-surface-3:   #242838;
  --clr-border:      rgba(255,255,255,0.07);
  --clr-border-2:    rgba(255,255,255,0.12);
  --clr-accent:      #6d8cfa;
  --clr-accent-2:    #a78bfa;
  --clr-accent-glow: rgba(109,140,250,0.25);
  --clr-text:        #e2e8f0;
  --clr-text-2:      #94a3b8;
  --clr-text-3:      #64748b;
  --clr-success:     #34d399;
  --clr-danger:      #f87171;
  --clr-warning:     #fbbf24;

  /* Typography */
  --font-ui:     'Inter', system-ui, sans-serif;
  --font-editor: 'JetBrains Mono', 'Courier New', monospace;
  --font-preview:'Lora', Georgia, serif;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  /* Layout */
  --nav-h: 52px;
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Effects */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow:     0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.6);
  --glass-bg:   rgba(20,23,32,0.75);
  --glass-blur: blur(16px);
  --transition: 150ms cubic-bezier(0.4,0,0.2,1);
}

/* Light mode */
[data-theme="light"] {
  --clr-bg:        #f8f9fc;
  --clr-surface:   #ffffff;
  --clr-surface-2: #f1f3f8;
  --clr-surface-3: #e8ebf3;
  --clr-border:    rgba(0,0,0,0.07);
  --clr-border-2:  rgba(0,0,0,0.12);
  --clr-text:      #1e2535;
  --clr-text-2:    #4a5568;
  --clr-text-3:    #94a3b8;
  --glass-bg:      rgba(255,255,255,0.75);
}

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

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

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

a {
  color: var(--clr-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--clr-accent-2); }

/* ─── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--clr-surface-3);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--clr-border-2); }

/* ─── Navigation Bar ────────────────────────────────────── */
.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  gap: var(--space-3);
}

.nav-logo {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}
.nav-logo svg { opacity: 0.85; }

.nav-note-title {
  flex: 1;
  min-width: 0;
  font-size: 0.875rem;
  color: var(--clr-text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 var(--space-2);
}

.nav-note-title input {
  background: none;
  border: none;
  outline: none;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--clr-text-2);
  width: 100%;
  cursor: text;
  transition: color var(--transition);
}
.nav-note-title input:focus { color: var(--clr-text); }
.nav-note-title input::placeholder { color: var(--clr-text-3); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font-ui);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  user-select: none;
  line-height: 1.4;
}
.btn svg { flex-shrink: 0; }

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--clr-text-2);
}
.btn-ghost:hover {
  background: var(--clr-surface-2);
  color: var(--clr-text);
}

.btn-outline {
  background: transparent;
  border-color: var(--clr-border-2);
  color: var(--clr-text-2);
}
.btn-outline:hover {
  background: var(--clr-surface-2);
  border-color: var(--clr-border-2);
  color: var(--clr-text);
}

.btn-primary {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--clr-accent-2);
  border-color: var(--clr-accent-2);
  box-shadow: 0 0 20px var(--clr-accent-glow);
}

.btn-danger {
  background: transparent;
  border-color: var(--clr-danger);
  color: var(--clr-danger);
}
.btn-danger:hover {
  background: var(--clr-danger);
  color: #fff;
}

.btn-icon {
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  aspect-ratio: 1;
}

/* Save status indicator */
.save-status {
  font-size: 0.75rem;
  color: var(--clr-text-3);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: all var(--transition);
}
.save-status.saving { color: var(--clr-warning); }
.save-status.saved  { color: var(--clr-success); }
.save-status.error  { color: var(--clr-danger); }

.save-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.save-status.saving .save-dot {
  animation: pulse-dot 1s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

/* ─── Editor Layout ─────────────────────────────────────── */
.editor-container {
  display: flex;
  height: 100dvh;
  padding-top: var(--nav-h);
  overflow: hidden;
}

.editor-pane {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--clr-border);
  position: relative;
}

.preview-pane {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  display: none; /* hidden by default on small */
}

.editor-container.split .preview-pane {
  display: block;
}
.editor-container.preview-only .editor-pane {
  display: none;
}
.editor-container.preview-only .preview-pane {
  display: block;
}

/* ─── Textarea / Editor ─────────────────────────────────── */
#editor {
  flex: 1;
  width: 100%;
  padding: var(--space-8) clamp(var(--space-6), 8vw, 12rem);
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-editor);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.85;
  color: var(--clr-text);
  caret-color: var(--clr-accent);
  tab-size: 2;
  overflow-y: auto;
  letter-spacing: 0;
}

#editor::placeholder { color: var(--clr-text-3); }
#editor::selection {
  background: var(--clr-accent-glow);
}

/* ─── Markdown Preview ──────────────────────────────────── */
.preview-content {
  padding: var(--space-8) clamp(var(--space-6), 8vw, 12rem);
  font-family: var(--font-preview);
  font-size: clamp(16px, 1.8vw, 18px);
  line-height: 1.75;
  color: var(--clr-text);
  max-width: 100%;
}

.preview-content h1,
.preview-content h2,
.preview-content h3,
.preview-content h4,
.preview-content h5,
.preview-content h6 {
  font-family: var(--font-ui);
  font-weight: 600;
  line-height: 1.3;
  margin: 1.8em 0 0.6em;
  color: var(--clr-text);
}
.preview-content h1 { font-size: 2em; letter-spacing: -0.02em; }
.preview-content h2 { font-size: 1.5em; letter-spacing: -0.01em; }
.preview-content h3 { font-size: 1.25em; }

.preview-content p { margin: 1em 0; }
.preview-content a { color: var(--clr-accent); border-bottom: 1px solid var(--clr-accent-glow); }
.preview-content a:hover { color: var(--clr-accent-2); border-color: var(--clr-accent-2); }

.preview-content code {
  font-family: var(--font-editor);
  font-size: 0.875em;
  background: var(--clr-surface-2);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--clr-accent-2);
}

.preview-content pre {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
  overflow-x: auto;
  margin: 1.5em 0;
}
.preview-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: var(--clr-text);
}

.preview-content blockquote {
  border-left: 3px solid var(--clr-accent);
  padding-left: var(--space-4);
  margin: 1.5em 0;
  color: var(--clr-text-2);
  font-style: italic;
}

.preview-content ul, .preview-content ol {
  margin: 1em 0;
  padding-left: 1.75em;
}
.preview-content li { margin: 0.35em 0; }

.preview-content hr {
  border: none;
  border-top: 1px solid var(--clr-border);
  margin: 2em 0;
}

.preview-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9em;
}
.preview-content th, .preview-content td {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--clr-border);
  text-align: left;
}
.preview-content th {
  background: var(--clr-surface-2);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.85em;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.preview-content img {
  max-width: 100%;
  border-radius: var(--radius);
}

/* ─── Status Bar ─────────────────────────────────────────── */
.status-bar {
  height: 28px;
  padding: 0 clamp(var(--space-6), 8vw, 12rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--clr-border);
  background: var(--clr-surface);
}

.status-bar-left, .status-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: 0.7rem;
  color: var(--clr-text-3);
}

/* ─── Modals ─────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95) translateY(8px);
  transition: transform 200ms cubic-bezier(0.4,0,0.2,1);
  position: relative;
}
.modal-backdrop.open .modal {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}

.modal-subtitle {
  font-size: 0.875rem;
  color: var(--clr-text-2);
  margin-bottom: var(--space-6);
}

/* ─── Form Elements ──────────────────────────────────────── */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--clr-text-2);
  margin-bottom: var(--space-2);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.form-input {
  width: 100%;
  padding: 0.6rem var(--space-3);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}
.form-input::placeholder { color: var(--clr-text-3); }

.form-error {
  font-size: 0.8rem;
  color: var(--clr-danger);
  margin-top: var(--space-2);
}

.form-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-5) 0;
  color: var(--clr-text-3);
  font-size: 0.8rem;
}
.form-divider::before, .form-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

/* ─── Toggle Switch ──────────────────────────────────────── */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  user-select: none;
}
.toggle-wrap .form-label {
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--clr-text-2);
  cursor: pointer;
}

.toggle {
  position: relative;
  width: 38px;
  height: 22px;
  flex-shrink: 0;
}
.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}
.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--clr-surface-3);
  border-radius: 11px;
  transition: background var(--transition);
  cursor: pointer;
}
.toggle-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--transition), background var(--transition);
  box-shadow: var(--shadow-sm);
}
.toggle input:checked + .toggle-track {
  background: var(--clr-accent);
}
.toggle input:checked + .toggle-track::after {
  transform: translateX(16px);
}

/* ─── Note Settings Panel ────────────────────────────────── */
.settings-panel {
  position: fixed;
  inset-block: var(--nav-h) 0;
  right: 0;
  width: clamp(280px, 30vw, 360px);
  background: var(--clr-surface);
  border-left: 1px solid var(--clr-border);
  overflow-y: auto;
  z-index: 50;
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform 250ms cubic-bezier(0.4,0,0.2,1);
}
.settings-panel.open {
  transform: translateX(0);
  box-shadow: var(--shadow-lg);
}

.settings-panel-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--space-5);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.settings-section {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--clr-border);
}
.settings-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.settings-section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-3);
  margin-bottom: var(--space-3);
}

/* ─── URL Share Box ──────────────────────────────────────── */
.url-share-box {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-family: var(--font-editor);
  color: var(--clr-text-2);
  overflow: hidden;
}
.url-share-box span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ─── Landing Page ───────────────────────────────────────── */
.landing {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

.landing::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(109,140,250,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.landing-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.9rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border-2);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--clr-text-2);
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}
.landing-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-success);
  box-shadow: 0 0 6px var(--clr-success);
  animation: live-dot 2s ease-in-out infinite;
}
@keyframes live-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.landing-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--clr-text) 0%, var(--clr-text-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-text-2);
  max-width: 40ch;
  margin: 0 auto var(--space-8);
  line-height: 1.6;
}

.landing-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-8);
}

.landing-cta .btn {
  padding: 0.7rem 1.5rem;
  font-size: 0.9375rem;
  border-radius: var(--radius);
}

.landing-features {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--clr-text-3);
  margin-top: var(--space-4);
}
.landing-features span {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ─── Dashboard ──────────────────────────────────────────── */
.dashboard-container {
  max-width: 860px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + var(--space-8)) var(--space-6) var(--space-8);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

.dashboard-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.note-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
}
.note-card:hover {
  border-color: var(--clr-border-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.note-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-card-excerpt {
  font-size: 0.8rem;
  color: var(--clr-text-3);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.4em;
}

.note-card-meta {
  margin-top: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--clr-text-3);
}

.note-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.note-badge.public {
  background: rgba(52,211,153,0.12);
  color: var(--clr-success);
}
.note-badge.private {
  background: rgba(100,116,139,0.12);
  color: var(--clr-text-3);
}

.empty-state {
  text-align: center;
  padding: var(--space-8) 0;
  color: var(--clr-text-3);
}
.empty-state svg { margin-bottom: var(--space-4); opacity: 0.4; }
.empty-state p { font-size: 0.9rem; }

/* ─── Tabs (Auth Modal) ──────────────────────────────────── */
.tab-list {
  display: flex;
  gap: 2px;
  background: var(--clr-surface-2);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: var(--space-6);
}
.tab-btn {
  flex: 1;
  padding: 0.45rem var(--space-3);
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  background: transparent;
  color: var(--clr-text-3);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn.active {
  background: var(--clr-surface);
  color: var(--clr-text);
  box-shadow: var(--shadow-sm);
}

/* ─── Utility Classes ────────────────────────────────────── */
.hidden { display: none !important; }
.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;
}

.text-muted { color: var(--clr-text-3); }
.text-sm    { font-size: 0.875rem; }
.text-xs    { font-size: 0.75rem; }

.flex       { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2      { gap: var(--space-2); }
.gap-3      { gap: var(--space-3); }
.gap-4      { gap: var(--space-4); }
.mt-2       { margin-top: var(--space-2); }
.mt-4       { margin-top: var(--space-4); }
.mb-4       { margin-bottom: var(--space-4); }
.w-full     { width: 100%; }

/* ─── Toast Notifications ────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  color: var(--clr-text);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 240px;
  pointer-events: all;
  animation: toast-in 200ms ease forwards;
}
.toast.fade-out { animation: toast-out 200ms ease forwards; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(4px) scale(0.97); }
}

.toast-success { border-color: rgba(52,211,153,0.3); }
.toast-error   { border-color: rgba(248,113,113,0.3); }
.toast-icon    { font-size: 1rem; }

/* ─── View Mode Toggle ───────────────────────────────────── */
.view-toggle {
  display: flex;
  gap: 2px;
  background: var(--clr-surface-2);
  border-radius: var(--radius-sm);
  padding: 2px;
}
.view-toggle .btn {
  padding: 0.3rem 0.5rem;
  border-radius: calc(var(--radius-sm) - 2px);
  font-size: 0.75rem;
}
.view-toggle .btn.active {
  background: var(--clr-surface-3);
  color: var(--clr-text);
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .editor-container.split .editor-pane,
  .editor-container.split .preview-pane {
    flex: 1;
    min-width: 0;
  }
  .editor-container.split {
    flex-direction: column;
  }
  .editor-container.split .editor-pane {
    border-right: none;
    border-bottom: 1px solid var(--clr-border);
    max-height: 50%;
  }
  .nav-note-title { display: none; }
  .settings-panel {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--clr-border);
  }
}

@media (min-width: 1024px) {
  .editor-container {
    /* Default: split view on desktop */
  }
}