/* ==========================================================================
   Teymensel Mind — Akıllı Notlar ve Kişisel Bilgi Merkezi
   Web Stylesheet (Google Keep + PKM + Mind AI)
   Author: Teymensel | https://mind.teymensel.com
   ========================================================================== */

:root {
  --bg-main: #202124;
  --bg-elevated: #28292c;
  --bg-input: #525355;
  --bg-search: #2d2e32;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --border-subtle: #5f6368;
  --accent-gold: #fabb05;
  --accent-blue: #4285f4;
  --accent-green: #34a853;
  --accent-purple: #a142f4;
  --accent-red: #ea4335;
  --nav-active-bg: rgba(250, 187, 5, 0.18);
  --shadow-card: 0 2px 6px rgba(0, 0, 0, 0.35);
  --shadow-modal: 0 12px 38px rgba(0, 0, 0, 0.6);

  /* Authentic Google Keep Dark Mode Palette */
  --keep-default: #202124;
  --keep-coral: #77172e;
  --keep-peach: #692b17;
  --keep-sand: #7c4a03;
  --keep-mint: #264d3b;
  --keep-sage: #0c625d;
  --keep-fog: #256377;
  --keep-storm: #284255;
  --keep-dusk: #472e5b;
  --keep-blossom: #6c394f;
  --keep-clay: #4b443a;
  --keep-chalk: #2d2e30;
}

body.light-mode {
  --bg-main: #ffffff;
  --bg-elevated: #f8f9fa;
  --bg-input: #f1f3f4;
  --bg-search: #f1f3f4;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --border-subtle: #e0e0e0;
  --nav-active-bg: #feefc3;
  --shadow-card: 0 1px 4px rgba(60, 64, 67, 0.2);
  --shadow-modal: 0 10px 32px rgba(60, 64, 67, 0.28);

  /* Authentic Google Keep Light Mode Palette */
  --keep-default: #ffffff;
  --keep-coral: #faafa8;
  --keep-peach: #f39f76;
  --keep-sand: #fff8b8;
  --keep-mint: #e2f6d3;
  --keep-sage: #b4ddd3;
  --keep-fog: #d4e4ed;
  --keep-storm: #aeccdc;
  --keep-dusk: #d3bfdb;
  --keep-blossom: #f6e2dd;
  --keep-clay: #e9e3d4;
  --keep-chalk: #efeff1;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Top Header Bar (Google Keep Desktop & Mobile Responsive) */
.top-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background-color: var(--bg-main);
  border-bottom: 1px solid rgba(128, 128, 128, 0.18);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s;
}

.icon-btn:hover {
  background-color: rgba(154, 160, 166, 0.16);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  object-fit: cover;
}

.brand-title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.brand-slogan {
  font-size: 11px;
  color: var(--text-secondary);
  display: block;
}

/* Search Bar */
.search-container {
  flex: 1;
  max-width: 720px;
  margin: 0 16px;
  height: 46px;
  background-color: var(--bg-search);
  border-radius: 10px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 10px;
  transition: box-shadow 0.2s, background-color 0.2s;
}

.search-container:focus-within {
  background-color: var(--bg-elevated);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.search-container input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 15px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sync-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background-color: rgba(52, 168, 83, 0.14);
  color: #34a853;
  border: 1px solid rgba(52, 168, 83, 0.3);
  cursor: pointer;
}

.sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #34a853;
  box-shadow: 0 0 8px #34a853;
}

/* Main App Layout */
.app-body {
  display: flex;
  min-height: calc(100vh - 64px);
}

/* Left Sidebar (Google Keep Navigation) */
.sidebar {
  width: 265px;
  padding: 12px 12px 24px 0;
  flex-shrink: 0;
  transition: transform 0.25s ease, width 0.25s ease;
  user-select: none;
}

.sidebar.collapsed {
  width: 72px;
}

.sidebar.collapsed .nav-label,
.sidebar.collapsed .sidebar-section-header {
  display: none;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 11px 20px;
  border-radius: 0 25px 25px 0;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.15s;
}

.nav-item:hover {
  background-color: rgba(154, 160, 166, 0.12);
}

.nav-item.active {
  background-color: var(--nav-active-bg);
  font-weight: 700;
}

.sidebar-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 6px 22px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
}

/* Workspace Content */
.workspace-main {
  flex: 1;
  padding: 24px 28px 90px;
  max-width: 1400px;
  margin: 0 auto;
}

/* Quick Note Composer ("Take a note...") */
.composer-box {
  max-width: 600px;
  margin: 0 auto 32px;
  background-color: var(--keep-default);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  padding: 12px 16px;
  transition: all 0.2s ease;
}

.composer-collapsed {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: text;
}

.composer-placeholder {
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
}

.composer-quick-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.composer-expanded {
  display: none;
  flex-direction: column;
  gap: 10px;
}

.composer-box.open .composer-collapsed {
  display: none;
}

.composer-box.open .composer-expanded {
  display: flex;
}

.composer-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.composer-title-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 17px;
  font-weight: 600;
}

.composer-body-input {
  width: 100%;
  min-height: 76px;
  background: transparent;
  border: none;
  outline: none;
  resize: vertical;
  color: var(--text-primary);
  font-size: 14.5px;
  line-height: 1.5;
  font-family: inherit;
}

.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 6px;
}

.composer-tools {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-primary {
  background-color: var(--accent-gold);
  color: #18191b;
  border: none;
  padding: 7px 16px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 13.5px;
  cursor: pointer;
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}

/* Section Headers ("SABİTLENMİŞ", "DİĞERLERİ") */
.notes-section-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.9px;
  color: var(--text-secondary);
  margin: 18px 0 10px 6px;
  text-transform: uppercase;
}

/* Masonry Notes Grid */
.notes-grid {
  column-count: 4;
  column-gap: 14px;
}

.notes-grid.list-view {
  column-count: 1;
  max-width: 640px;
  margin: 0 auto;
}

@media (max-width: 1200px) {
  .notes-grid { column-count: 3; }
}
@media (max-width: 860px) {
  .notes-grid { column-count: 2; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 64px;
    bottom: 0;
    background-color: var(--bg-main);
    z-index: 95;
    box-shadow: var(--shadow-modal);
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
    width: 265px;
  }
}
@media (max-width: 540px) {
  .notes-grid { column-count: 2; column-gap: 10px; }
  .workspace-main { padding: 14px 12px 90px; }
  .header-left { min-width: auto; }
  .brand-slogan { display: none; }
}

/* Keep Note Card */
.note-card {
  break-inside: avoid;
  margin-bottom: 14px;
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  padding: 14px 14px 10px;
  position: relative;
  cursor: pointer;
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
}

.note-card:hover {
  box-shadow: var(--shadow-card);
  border-color: rgba(250, 187, 5, 0.55);
}

/* Card Color Themes */
.color-default { background-color: var(--keep-default); }
.color-coral   { background-color: var(--keep-coral); border-color: transparent; }
.color-peach   { background-color: var(--keep-peach); border-color: transparent; }
.color-sand    { background-color: var(--keep-sand); border-color: transparent; }
.color-mint    { background-color: var(--keep-mint); border-color: transparent; }
.color-sage    { background-color: var(--keep-sage); border-color: transparent; }
.color-fog     { background-color: var(--keep-fog); border-color: transparent; }
.color-storm   { background-color: var(--keep-storm); border-color: transparent; }
.color-dusk    { background-color: var(--keep-dusk); border-color: transparent; }
.color-blossom { background-color: var(--keep-blossom); border-color: transparent; }
.color-clay    { background-color: var(--keep-clay); border-color: transparent; }
.color-chalk   { background-color: var(--keep-chalk); border-color: transparent; }

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.card-title {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.3;
  word-break: break-word;
}

.pin-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px;
  font-size: 16px;
}

.pin-btn.pinned {
  color: var(--accent-gold);
}

.card-content {
  font-size: 13.8px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 10px;
}

.card-checklist {
  list-style: none;
  margin-bottom: 10px;
}

.card-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 3px 0;
  font-size: 13.5px;
}

.card-checklist li.done span {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.card-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
}

.pill {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  background-color: rgba(128, 128, 128, 0.18);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pill-ai {
  background-color: rgba(161, 66, 244, 0.2);
  border: 1px solid rgba(161, 66, 244, 0.4);
}

.pill-link {
  background-color: rgba(66, 133, 244, 0.2);
}

.card-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 8px;
  opacity: 0.78;
}

.note-card:hover .card-actions {
  opacity: 1;
}

/* Rich URL Preview Card inside Note */
.url-preview-box {
  margin-top: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  font-size: 12px;
}

/* Modals (Live Note Editor, Knowledge Graph, Mind AI, Sketch Pad) */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  border-radius: 16px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg-elevated);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(128, 128, 128, 0.18);
}

.modal-body {
  padding: 18px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 10px 16px;
  border-top: 1px solid rgba(128, 128, 128, 0.18);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* Color Swatches */
.color-palette-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 8px 0;
}

.color-swatch {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: transform 0.12s;
}

.color-swatch.selected {
  border-color: var(--accent-gold);
  transform: scale(1.15);
}

/* Code Block Styling */
pre.code-block {
  background: #141619;
  color: #e8eaed;
  padding: 10px 12px;
  border-radius: 8px;
  font-family: 'Fira Code', monospace;
  font-size: 12.5px;
  overflow-x: auto;
  margin: 8px 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* Knowledge Graph & Sketch Canvas */
.graph-canvas-wrap {
  width: 100%;
  height: 460px;
  background: #141518;
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

/* Google Sign-in Buttons and Avatar */
.google-signin-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 6px 14px;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.google-signin-btn:hover {
  background-color: rgba(66, 133, 244, 0.14);
  border-color: #4285f4;
}

.google-user-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 4px 12px 4px 5px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.google-user-pill:hover {
  border-color: var(--accent-gold);
}

.google-avatar-circle {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #4285f4;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.google-user-name {
  font-size: 12.5px;
  font-weight: 600;
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Empty Navigation Actions (No mock folders/labels) */
.empty-nav-action {
  padding: 8px 20px;
  font-size: 12.5px;
  color: var(--accent-gold);
  cursor: pointer;
  font-weight: 600;
  border-radius: 0 20px 20px 0;
  transition: background-color 0.15s;
}

.empty-nav-action:hover {
  background-color: rgba(250, 187, 5, 0.12);
}

/* Clean Empty State */
.clean-empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
  column-span: all;
  user-select: none;
}