:root {
  --frame: #dee1e6;
  --toolbar: #ffffff;
  --omnibox: #edf2fa;
  --omnibox-hover: #e2e8f4;
  --text: #202124;
  --muted: #444746;
  --icon: #444746;
  --hover: rgba(0, 0, 0, 0.06);
  --hover-strong: rgba(0, 0, 0, 0.1);
  --line: #d0d4da;
  --accent: #1a73e8;
  --close: #e81123;
  --tab-h: 36px;
  --toolbar-h: 38px;
  --bm-h: 28px;
  --panel-w: 420px;
  --radius: 8px;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: #1f1f1f;
  font-family: "Segoe UI", "Segoe UI Variable", system-ui, sans-serif;
  color: var(--text);
}

button, input, textarea {
  font-family: inherit;
}

.chrome-window {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--toolbar);
  user-select: none;
}

/* ===== Tab strip ===== */
.tabstrip {
  display: flex;
  align-items: stretch;
  height: var(--tab-h);
  background: var(--frame);
  padding: 0 0 0 8px;
}

.tabs {
  display: flex;
  align-items: stretch;
  min-width: 0;
  max-width: calc(100% - 180px);
}

.tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 180px;
  width: auto;
  min-width: 80px;
  max-width: 240px;
  height: 100%;
  padding: 0 8px 0 12px;
  color: var(--muted);
  cursor: pointer;
  z-index: 1;
}

.tab + .tab {
  margin-left: 2px;
}

.tab:not(.active):hover .tab-bg {
  background: rgba(255, 255, 255, 0.45);
}

.tab.active {
  z-index: 2;
  color: var(--text);
}

.tab-bg {
  position: absolute;
  inset: 4px 0 0;
  border-radius: 8px 8px 0 0;
  pointer-events: none;
}

.tab.active .tab-bg {
  inset: 4px -6px 0;
  background: var(--toolbar);
}

.tab.active .tab-bg::before,
.tab.active .tab-bg::after {
  content: "";
  position: absolute;
  bottom: 0;
  width: 8px;
  height: 8px;
}

.tab.active .tab-bg::before {
  left: -8px;
  background: radial-gradient(circle at 0 0, transparent 8px, var(--toolbar) 8.5px);
}

.tab.active .tab-bg::after {
  right: -8px;
  background: radial-gradient(circle at 100% 0, transparent 8px, var(--toolbar) 8.5px);
}

.tab-favicon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  z-index: 1;
}

.tab-favicon svg,
.tab-favicon img {
  width: 16px;
  height: 16px;
}

.tab-title {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  line-height: 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 1;
}

.tab-close {
  z-index: 1;
  width: 18px;
  height: 18px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.tab-close:hover {
  background: var(--hover-strong);
}

.tab-new {
  width: 28px;
  height: 28px;
  margin: auto 6px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.tab-new:hover {
  background: var(--hover-strong);
}

.tabstrip-spacer {
  flex: 1;
  -webkit-app-region: drag;
}

.caption-buttons {
  display: flex;
  height: 100%;
}

.caption-btn {
  width: 46px;
  height: 100%;
  border: 0;
  background: transparent;
  color: #1a1a1a;
  display: grid;
  place-items: center;
  cursor: default;
}

.caption-btn:hover {
  background: rgba(0, 0, 0, 0.08);
}

.caption-close:hover {
  background: var(--close);
  color: #fff;
}

/* ===== Toolbar ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  height: var(--toolbar-h);
  padding: 0 8px 2px 6px;
  background: var(--toolbar);
}

.nav-btns {
  display: flex;
  align-items: center;
}

.tool-btn {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--icon);
  display: grid;
  place-items: center;
  cursor: pointer;
}

.tool-btn:hover {
  background: var(--hover);
}

.tool-btn:disabled {
  opacity: 0.38;
  cursor: default;
}

.tool-btn:disabled:hover {
  background: transparent;
}

.omnibox {
  flex: 1;
  display: flex;
  align-items: center;
  height: 34px;
  margin: 0 8px 0 6px;
  padding: 0 6px 0 4px;
  background: var(--omnibox);
  border-radius: 24px;
  border: 2px solid transparent;
  min-width: 120px;
}

.omnibox:hover {
  background: var(--omnibox-hover);
}

.omnibox.focused {
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 1px 6px rgba(32, 33, 36, 0.12);
}

.site-info,
.omni-icon {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.site-info:hover,
.omni-icon:hover {
  background: var(--hover);
}

#urlInput {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  padding: 0 6px;
}

.ask-ai-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px 0 8px;
  margin-right: 2px;
  border: 0;
  border-radius: 16px;
  background: #e8f0fe;
  color: #174ea6;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.ask-ai-btn:hover {
  background: #d2e3fc;
}

.ask-ai-btn.active {
  background: #1a73e8;
  color: #fff;
}

.ask-ai-btn.active .ask-ai-icon {
  color: #fff;
}

.avatar-btn {
  width: 28px;
  height: 28px;
  margin: 0 2px;
  border: 0;
  border-radius: 50%;
  background: #1a73e8;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.avatar-btn:hover {
  box-shadow: 0 0 0 4px var(--hover);
}

/* ===== Bookmarks ===== */
.bookmarks {
  display: flex;
  align-items: center;
  gap: 2px;
  height: var(--bm-h);
  padding: 0 8px 4px 12px;
  background: var(--toolbar);
  border-bottom: 1px solid #e8eaed;
}

.bm {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 8px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
  max-width: 140px;
  overflow: hidden;
  white-space: nowrap;
}

.bm:hover {
  background: var(--hover);
}

.bm svg {
  flex-shrink: 0;
}

/* ===== Main ===== */
.main {
  flex: 1;
  display: flex;
  min-height: 0;
  background: #fff;
}

.webview {
  position: relative;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: #fff;
}

.load-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--accent);
  z-index: 5;
  opacity: 0;
}

.load-bar.running {
  animation: load 0.85s ease-in-out;
}

@keyframes load {
  0% { width: 0; opacity: 1; }
  70% { width: 80%; opacity: 1; }
  100% { width: 100%; opacity: 0; }
}

.page {
  flex: 1;
  overflow: auto;
  user-select: text;
}

.reload-spin {
  animation: spin 0.7s linear;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Side panel ===== */
.side-panel {
  position: relative;
  width: var(--panel-w);
  min-width: 300px;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-left: 1px solid var(--line);
  box-shadow: -4px 0 16px rgba(60, 64, 67, 0.08);
  overflow: hidden;
}

.side-panel[hidden] {
  display: none;
}

.panel-resizer {
  position: absolute;
  left: -3px;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: ew-resize;
  z-index: 2;
}

/* ===== New Tab Page ===== */
.ntp {
  min-height: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 72px 24px 40px;
  background: #fff;
}

.google-logo {
  margin-bottom: 28px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 90px;
  font-weight: 500;
  letter-spacing: -4px;
  line-height: 1;
  user-select: none;
}

.g-b { color: #4285F4; }
.g-r { color: #EA4335; }
.g-y { color: #FBBC05; }
.g-g { color: #34A853; }

.ntp-search {
  display: flex;
  align-items: center;
  width: min(584px, 100%);
  height: 46px;
  padding: 0 8px 0 16px;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 1px 6px rgba(32, 33, 36, 0.28);
}

.ntp-search:hover,
.ntp-search:focus-within {
  box-shadow: 0 1px 8px rgba(32, 33, 36, 0.32);
}

.ntp-search input {
  flex: 1;
  border: 0;
  outline: none;
  font-size: 16px;
  padding: 0 12px;
  background: transparent;
}

.ntp-ico {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: #5f6368;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.shortcuts {
  display: grid;
  grid-template-columns: repeat(5, 112px);
  gap: 8px 8px;
  margin-top: 40px;
}

.shortcut {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 16px 8px 12px;
  border: 0;
  border-radius: 16px;
  background: transparent;
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
}

.shortcut:hover {
  background: #f1f3f4;
}

.shortcut-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #f1f3f4;
  display: grid;
  place-items: center;
}

.customize {
  margin-top: auto;
  align-self: flex-end;
  border: 0;
  background: #fff;
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 1px 2px rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
  cursor: pointer;
}

.customize:hover {
  background: #f8f9fa;
}

/* ===== Site pages ===== */
.site {
  min-height: 100%;
  background: #fff;
}

.site-hero {
  padding: 48px 40px 32px;
  border-bottom: 1px solid #ebebeb;
}

.site-hero .kicker {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #5f6368;
  margin-bottom: 8px;
}

.site-hero h1 {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.4px;
  margin-bottom: 10px;
}

.site-hero p {
  max-width: 640px;
  color: #3c4043;
  font-size: 15px;
  line-height: 1.6;
}

.article {
  max-width: 760px;
  padding: 32px 40px 64px;
  font-size: 16px;
  line-height: 1.7;
  color: #3c4043;
}

.article h2 {
  font-size: 22px;
  color: var(--text);
  margin: 28px 0 10px;
}

.serp {
  max-width: 652px;
  padding: 20px 24px 48px 48px;
}

.serp-stats {
  font-size: 13px;
  color: #70757a;
  margin-bottom: 18px;
}

.result {
  margin-bottom: 26px;
}

.result .url {
  font-size: 12px;
  color: #202124;
}

.result h3 {
  font-size: 20px;
  color: #1a0dab;
  font-weight: 400;
  margin: 2px 0 4px;
  cursor: pointer;
}

.result h3:hover {
  text-decoration: underline;
}

.result p {
  font-size: 14px;
  color: #4d5156;
  line-height: 1.55;
}

.yt-page {
  background: #0f0f0f;
  color: #f1f1f1;
  min-height: 100%;
  padding: 0 32px 32px;
}

.yt-bar {
  display: flex;
  align-items: center;
  height: 56px;
  margin: 0 -32px 8px;
  padding: 0 24px;
  gap: 16px;
}

.yt-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
}

.yt-logo svg {
  width: 28px;
  height: 28px;
}

.yt-search {
  flex: 1;
  max-width: 520px;
  height: 40px;
  margin: 0 auto;
  border: 1px solid #303030;
  border-radius: 40px;
  color: #aaa;
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-size: 14px;
}

.yt-heading {
  font-size: 20px;
  font-weight: 500;
  margin: 12px 0 20px;
}

.yt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px 16px;
}

.thumb {
  aspect-ratio: 16/9;
  border-radius: 12px;
  background: linear-gradient(135deg, #3f3f3f, #222);
}

.yt-thumb-0 { background: linear-gradient(135deg, #14532d, #052e16); }
.yt-thumb-1 { background: linear-gradient(135deg, #7c2d12, #431407); }
.yt-thumb-2 { background: linear-gradient(135deg, #1e3a8a, #1e1b4b); }
.yt-thumb-3 { background: linear-gradient(135deg, #9a3412, #7c2d12); }
.yt-thumb-4 { background: linear-gradient(135deg, #166534, #052e16); }
.yt-thumb-5 { background: linear-gradient(135deg, #6b21a8, #3b0764); }

.yt-page h3 {
  font-size: 16px;
  font-weight: 500;
  margin: 10px 0 4px;
}

.yt-page p {
  font-size: 13px;
  color: #aaa;
}

/* ===== News detail ===== */
.news {
  min-height: 100%;
  background: #fff;
}

.news-top {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 10px 40px;
  border-bottom: 3px solid #e32227;
}

.news-brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 26px;
  font-weight: 700;
  color: #e32227;
  letter-spacing: -0.4px;
}

.news-top nav {
  font-size: 13px;
  color: #4d4d4d;
}

.news-detail {
  max-width: 720px;
  padding: 24px 40px 64px;
}

.news-cat {
  color: #e32227;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.news-detail h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.4px;
  margin-bottom: 12px;
}

.news-meta {
  font-size: 13px;
  color: #757575;
  margin-bottom: 16px;
}

.news-lead {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: #222;
  margin-bottom: 16px;
}

.news-hero {
  height: 280px;
  border-radius: 4px;
  margin: 8px 0 20px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.news-hero figcaption {
  width: 100%;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 13px;
  padding: 8px 12px;
}

.theme-politics { background: linear-gradient(135deg, #1a365d, #9b2c2c); }
.theme-culture { background: linear-gradient(135deg, #6b21a8, #b45309); }
.theme-sport { background: linear-gradient(135deg, #166534, #052e16); }

.news-detail > p {
  font-size: 16px;
  line-height: 1.7;
  color: #3c4043;
  margin-bottom: 14px;
}

.news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.news-tags span {
  background: #f1f1f1;
  color: #333;
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 13px;
}

/* ===== Wikipedia ===== */
.wiki {
  min-height: 100%;
  background: #fff;
}

.wiki-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 32px;
  background: #f8f9fa;
  border-bottom: 1px solid #a7d7f9;
  font-size: 14px;
  font-weight: 600;
}

.wiki-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #000;
  color: #fff;
  display: grid;
  place-items: center;
  font-family: Georgia, serif;
  font-size: 16px;
}

.wiki-lang {
  font-weight: 400;
  color: #54595d;
}

.wiki-body {
  max-width: 800px;
  padding: 16px 40px 64px;
  font-size: 16px;
  line-height: 1.7;
  color: #202122;
}

.wiki-body h1 {
  font-family: Georgia, "Linux Libertine", serif;
  font-size: 32px;
  font-weight: 400;
  border-bottom: 1px solid #a2a9b1;
  padding-bottom: 6px;
  margin-bottom: 4px;
}

.wiki-desc {
  font-size: 13px;
  color: #54595d;
  margin-bottom: 16px;
}

.wiki-body h2 {
  font-size: 22px;
  font-weight: 400;
  font-family: Georgia, serif;
  border-bottom: 1px solid #a2a9b1;
  margin: 24px 0 8px;
  padding-bottom: 4px;
}

.mail-page {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100%;
}

.mail-nav {
  background: #f6f8fc;
  padding: 12px;
}

.mail-nav button {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 10px 16px;
  border-radius: 0 20px 20px 0;
  font-size: 14px;
  cursor: pointer;
}

.mail-nav button.active {
  background: #d3e3fd;
  color: #041e49;
  font-weight: 500;
}

.mail-list {
  padding: 8px 0;
}

.mail-row {
  display: grid;
  grid-template-columns: 180px 1fr 80px;
  gap: 12px;
  padding: 10px 20px;
  border-bottom: 1px solid #f1f3f4;
  font-size: 13px;
}

.mail-row strong { font-weight: 600; }
.mail-row span { color: #5f6368; }

@media (max-width: 900px) {
  .shortcuts { grid-template-columns: repeat(4, 96px); }
  .ask-ai-btn span { display: none; }
  .ask-ai-btn { padding: 0; width: 32px; justify-content: center; }
}