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

:root {
  --bg:              #0a0a0f;
  --surface:         #13131d;
  --surface-2:       #1a1a28;
  --border:          #232336;
  --border-hover:    #3a3a5c;
  --text-primary:    #f1f0ff;
  --text-secondary:  #c4c2e0;
  --text-muted:      #8b89a8;
  --text-faint:      #5c5a78;
  --accent:          #7c3aed;
  --accent-2:        #4f46e5;
  --accent-light:    #a78bfa;
  --accent-glow:     rgba(124, 58, 237, 0.25);
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
  --danger:          #ef4444;
  --success:         #22c55e;
  --warning-bg:      #451a03;
  --warning-text:    #fde68a;
  --error-bg:        #450a0a;
  --error-text:      #fca5a5;
  --radius-sm:       8px;
  --radius-md:       14px;
  --radius-lg:       20px;
  --transition:      0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, #1e1e30 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.screen {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  animation: fadeSlideIn 0.18s ease forwards;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  padding-top: calc(14px + env(safe-area-inset-top));
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  min-height: 58px;
}

.topbar-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
  letter-spacing: -0.02em;
}

.topbar-meta {
  font-size: 12px;
  color: var(--text-faint);
  font-weight: 500;
  background: var(--surface-2);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.scroll-area {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 14px 16px;
  padding-bottom: calc(100px + env(safe-area-inset-bottom));
}

.scroll-area::-webkit-scrollbar { width: 4px; }
.scroll-area::-webkit-scrollbar-track { background: transparent; }
.scroll-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.scroll-area::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-md);
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  touch-action: manipulation;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  font-family: inherit;
  letter-spacing: -0.01em;
}
.btn:active { opacity: 0.78; transform: scale(0.98); }

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  width: 100%;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover { box-shadow: 0 6px 28px rgba(124,58,237,0.4); }

.btn-ghost     { background: transparent; color: var(--accent-light); padding: 8px; }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-secondary {
  background: var(--surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border);
  width: 100%;
}
.btn-secondary:hover { border-color: var(--border-hover); background: #1e1e2e; }

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 7px;
  border-radius: var(--radius-sm);
  min-width: 40px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  transition: background var(--transition), color var(--transition);
  font-size: 16px;
}
.icon-btn:hover  { background: var(--surface-2); color: var(--accent-light); }
.icon-btn:active { background: var(--border); }
.icon-btn.danger { color: var(--danger); }

.input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 13px 16px;
  font-size: 16px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: inherit;
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.input::placeholder { color: var(--text-faint); }

.card {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 14px 16px;
  margin-bottom: 10px;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition), background var(--transition);
  user-select: none;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: 3px 0 0 3px;
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.35);
}
.card:hover::before { opacity: 1; }
.card:active { transform: scale(0.99); }

.card.active {
  border-color: var(--accent);
  background: rgba(124, 58, 237, 0.08);
  box-shadow: 0 0 0 1px var(--accent);
}
.card.active::before { opacity: 1; }

.card-date {
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.card-preview {
  font-size: 14px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 21px;
}

.entry-group-header {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 16px 2px 6px;
}
.entry-group-header:first-child { padding-top: 4px; }

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, #1e1e30 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.6s infinite;
  border-radius: 5px;
}
.skeleton-card {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 14px 16px;
  margin-bottom: 10px;
}
.skeleton-line { height: 12px; margin-bottom: 8px; }
.skeleton-line.short { width: 38%; }
.skeleton-line.long  { width: 83%; }
.skeleton-line.mid   { width: 62%; }

.fab {
  position: fixed;
  bottom: calc(32px + env(safe-area-inset-bottom));
  right: 24px;
  width: 58px;
  height: 58px;
  border-radius: 29px;
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  box-shadow: 0 4px 24px var(--accent-glow), 0 0 0 1px rgba(124,58,237,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
  transition: transform var(--transition), box-shadow var(--transition);
  z-index: 10;
}
.fab:hover  { transform: scale(1.08); box-shadow: 0 8px 32px rgba(124,58,237,0.55); }
.fab:active { transform: scale(0.94); }

/* ── Auth / Setup centred layout ─────────────────────────────────────────────── */

/* The outer screen scrolls; the inner card stays centred on large screens */
.setup-screen-scroll {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: calc(32px + env(safe-area-inset-top)) 20px
           calc(40px + env(safe-area-inset-bottom));
}

.setup-card {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.center-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: 32px 24px;
  padding-top: calc(32px + env(safe-area-inset-top));
  gap: 18px;
}

@keyframes pulseGlow {
  0%, 100% { filter: drop-shadow(0 0 10px rgba(124,58,237,0.5)); }
  50%       { filter: drop-shadow(0 0 28px rgba(124,58,237,0.85)); }
}

.lock-icon {
  font-size: 52px;
  animation: pulseGlow 3s ease-in-out infinite;
  margin-bottom: 4px;
}

.screen-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f1f0ff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.screen-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
  width: 100%;
}

.form-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.strength-bar-wrap {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  width: 100%;
}
.strength-bar {
  height: 100%;
  border-radius: 2px;
  transition: width 0.35s ease, background 0.35s ease;
}
.strength-label {
  font-size: 11px;
  color: var(--text-faint);
  text-align: right;
  font-weight: 500;
}

.warning-box {
  background: var(--warning-bg);
  color: var(--warning-text);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.55;
  width: 100%;
  border: 1px solid rgba(253, 230, 138, 0.15);
}

.error-box {
  background: var(--error-bg);
  color: var(--error-text);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.55;
  width: 100%;
  text-align: center;
  border: 1px solid rgba(252, 165, 165, 0.15);
}

.error-area { width: 100%; min-height: 20px; }
.error-msg {
  color: var(--danger);
  font-size: 13px;
  text-align: center;
  padding: 4px 0;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 56px 24px;
  gap: 10px;
  text-align: center;
}
.empty-icon  { font-size: 44px; opacity: 0.6; }
.empty-title { font-size: 17px; font-weight: 700; color: var(--text-primary); }
.empty-desc  { font-size: 14px; color: var(--text-muted); max-width: 260px; line-height: 1.6; }

.editor-textarea {
  flex: 1;
  width: 100%;
  background: transparent;
  color: var(--text-primary);
  border: none;
  outline: none;
  resize: none;
  font-size: 17px;
  line-height: 30px;
  padding: 24px 20px;
  font-family: 'Inter', inherit;
  -webkit-overflow-scrolling: touch;
  caret-color: var(--accent-light);
}

.editor-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 20px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-faint);
  flex-shrink: 0;
  background: rgba(10,10,15,0.6);
}

.save-status {
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 5px;
  font-weight: 500;
}
.save-status.saved   { color: var(--success); }
.save-status.unsaved { color: var(--text-faint); }
.save-status.saving  { color: var(--text-muted); }

.entry-body {
  white-space: pre-wrap;
  font-size: 17px;
  line-height: 30px;
  color: var(--text-primary);
  padding: 24px 20px;
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.entry-body::-webkit-scrollbar { width: 4px; }
.entry-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.settings-section { margin-bottom: 28px; }

.settings-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  padding-left: 4px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  margin-bottom: 2px;
  border: 1px solid var(--border);
  cursor: pointer;
  min-height: 50px;
  touch-action: manipulation;
  transition: background var(--transition), border-color var(--transition);
}
.settings-row:hover  { background: var(--surface-2); border-color: var(--border-hover); }
.settings-row:active { background: #1e1e2e; }
.settings-row-label  { font-size: 15px; color: var(--text-primary); font-weight: 500; }
.settings-row-check  { color: var(--accent-light); font-size: 16px; }

.overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 24px;
  animation: fadeSlideIn 0.15s ease;
}
.modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 1px solid var(--border);
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
}
.modal-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.modal-actions        { display: flex; gap: 10px; }
.modal-actions .btn   { flex: 1; }

@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent-light);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  display: inline-block;
}

.toast {
  position: fixed;
  bottom: calc(96px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--surface-2);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 500;
  z-index: 200;
  pointer-events: none;
  opacity: 0;
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transition: opacity 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ────────────────────────────────────────────────────────────────────────────
   SETUP SCREEN — 3-tab card
   ──────────────────────────────────────────────────────────────────────────── */

/* Tab bar — pill switcher */
.setup-tabs {
  display: flex;
  width: 100%;
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 4px;
  gap: 3px;
}
.setup-tab {
  flex: 1;
  padding: 9px 8px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
  touch-action: manipulation;
  letter-spacing: -0.01em;
}
.setup-tab:hover { color: var(--text-primary); }
.setup-tab.active {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 2px 10px var(--accent-glow);
}

/* Tab panels — THE critical rule: hidden by default, visible when .active */
.setup-panel {
  display: none;            /* ← hides all panels */
  flex-direction: column;
  gap: 16px;
  width: 100%;
  animation: fadeSlideIn 0.15s ease forwards;
}
.setup-panel.active {
  display: flex;            /* ← shows only the active one */
}

/* Restore: source toggle */
.restore-source-row {
  display: flex;
  width: 100%;
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 4px;
  gap: 4px;
}
.restore-source-btn {
  flex: 1;
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition), color var(--transition);
  touch-action: manipulation;
}
.restore-source-btn:hover { color: var(--text-primary); }
.restore-source-btn.active {
  background: var(--surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

/* Drop-zone */
.drop-zone {
  width: 100%;
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
  line-height: 1.5;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(124, 58, 237, 0.06);
  color: var(--accent-light);
}
.drop-zone u { color: var(--accent-light); text-decoration: underline; }

.file-chosen-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  width: 100%;
  gap: 8px;
}
.file-chosen-row span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Drive status */
.drive-status-connected {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 500;
}

/* ═════════════════════════════════════════════════════════════════════════════════
   DESKTOP TWO-PANEL LAYOUT  (≥ 768px)
   ═════════════════════════════════════════════════════════════════════════════════ */
@media (min-width: 768px) {

  #app {
    flex-direction: row;
    height: 100vh;
    max-width: 1280px;
    margin: 0 auto;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    box-shadow: 0 0 80px rgba(124, 58, 237, 0.06);
  }

  #sidebar {
    width: 300px;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    background: rgba(19, 19, 29, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
    flex-shrink: 0;
  }

  #sidebar .topbar { background: transparent; padding-top: 20px; }
  #sidebar .scroll-area { padding-bottom: 16px; }

  #main-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg);
  }

  #sidebar .fab {
    position: static;
    width: 34px; height: 34px;
    border-radius: 9px;
    font-size: 20px;
    box-shadow: none;
    padding: 0;
  }
  #sidebar .fab:hover { transform: scale(1.1); box-shadow: 0 4px 16px var(--accent-glow); }

  #main-panel > .screen { height: 100%; }

  /* Setup card on desktop: centred floating card */
  .setup-screen-scroll {
    align-items: center;    /* vertically centred on desktop */
  }
  .setup-card {
    background: var(--surface);
    border-radius: 24px;
    border: 1px solid var(--border);
    padding: 40px 36px;
    box-shadow: 0 8px 64px rgba(0,0,0,0.55), 0 0 0 1px rgba(124,58,237,0.08);
  }

  .modal    { max-width: 480px; }
  .toast    { bottom: 32px; }

  #sidebar .topbar-title { font-size: 17px; }

  .editor-textarea {
    padding: 36px 48px;
    font-size: 18px;
    line-height: 32px;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
  }

  .editor-meta { padding: 6px 48px; max-width: 720px; margin: 0 auto; width: 100%; }

  .entry-body {
    padding: 36px 48px;
    font-size: 18px;
    line-height: 32px;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
  }

  #main-panel .scroll-area {
    max-width: 640px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: 40px;
  }
}

@media (min-width: 1100px) {
  #sidebar { width: 340px; min-width: 340px; }
}

.welcome-pane {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 14px;
  text-align: center;
  padding: 40px;
}
.welcome-icon  { font-size: 56px; opacity: 0.5; animation: pulseGlow 4s ease-in-out infinite; }
.welcome-title { font-size: 20px; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; }
.welcome-desc  { font-size: 14px; color: var(--text-muted); max-width: 280px; line-height: 1.6; }