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

:root {
  --bg:           #0a0a0a;
  --tab-bar-bg:   #111111;
  --tab-active:   #1a1a1a;
  --tab-inactive: #0d0d0d;
  --toolbar-bg:   #111111;
  --address-bg:   #1a1a1a;
  --text:         #e8e8e8;
  --subtext:      #666666;
  --accent:       #ffffff;
  --border:       #2a2a2a;
  --hover:        #222222;
  --tab-height:   36px;
  --toolbar-height: 48px;
  --chrome-height: calc(var(--tab-height) + var(--toolbar-height));
}

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 13px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.browser {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  background: var(--bg);
}

.browser-chrome {
  flex: 0 0 auto;
  background: var(--tab-bar-bg);
  border-bottom: 1px solid var(--border);
  user-select: none;
}

.browser-body {
  flex: 1 1 auto;
  display: flex;
  overflow: hidden;
}

.browser-content {
  flex: 1 1 auto;
  order: 1;
  min-width: 0;
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
}

.browser-content iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: none;
  background: #0a0a0a;
}

.browser-content iframe.active {
  display: block;
}

.tab-bar {
  display: flex;
  align-items: flex-end;
  height: var(--tab-height);
  background: var(--tab-bar-bg);
  padding: 0 4px 0 0;
  overflow: hidden;
}

.tabs-container {
  display: flex;
  align-items: flex-end;
  flex: 1 1 auto;
  overflow-x: auto;
  overflow-y: visible;
  height: 100%;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.tabs-container::-webkit-scrollbar { display: none; }

.tab-bar-spacer {
  flex: 0 0 auto;
  width: 4px;
}

.tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  min-width: 100px;
  max-width: 220px;
  flex: 1 1 0;
  padding: 0 10px 0 12px;
  background: var(--tab-inactive);
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  margin-right: 2px;
  margin-left: 2px;
  transition: background 0.15s ease;
  overflow: visible;
  border: 1px solid transparent;
  border-bottom: none;
  align-self: flex-end;
}

.tab:hover {
  background: #151515;
}

.tab.active {
  background: var(--tab-active);
  z-index: 10;
  border-color: var(--border);
  border-bottom-color: var(--tab-active);
}

.tab.active::before,
.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  width: 12px;
  height: 12px;
  pointer-events: none;
}

.tab.active::before {
  left: -12px;
  background: var(--tab-active);
  mask-image: radial-gradient(circle at 100% 0%, transparent 70%, black 70%);
  -webkit-mask-image: radial-gradient(circle at 100% 0%, transparent 70%, black 70%);
}

.tab.active::after {
  right: -12px;
  background: var(--tab-active);
  mask-image: radial-gradient(circle at 0% 0%, transparent 70%, black 70%);
  -webkit-mask-image: radial-gradient(circle at 0% 0%, transparent 70%, black 70%);
}

.tab-favicon {
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--subtext);
}

.tab-favicon img {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  object-fit: contain;
}

.tab-favicon svg {
  width: 12px;
  height: 12px;
  color: var(--subtext);
}

.tab-title {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 400;
  color: var(--subtext);
  line-height: 1;
  min-width: 0;
}

.tab.active .tab-title {
  color: var(--text);
}

.tab-close {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--subtext);
  opacity: 0;
  transition: opacity 0.1s, background 0.1s, color 0.1s;
  padding: 0;
}

.tab:hover .tab-close,
.tab.active .tab-close {
  opacity: 1;
}

.tab-close:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text);
}

.tab-close svg {
  width: 10px;
  height: 10px;
}

.tab.loading .tab-favicon {
  animation: tabSpin 0.8s linear infinite;
}

@keyframes tabSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.new-tab-btn {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  color: var(--subtext);
  margin: 0 4px;
  transition: background 0.15s, color 0.15s;
  align-self: center;
  margin-bottom: 4px;
}

.new-tab-btn:hover {
  background: var(--hover);
  color: var(--text);
}

.new-tab-btn svg {
  width: 14px;
  height: 14px;
}

.toolbar {
  display: flex;
  align-items: center;
  height: var(--toolbar-height);
  padding: 0 10px;
  gap: 4px;
  background: var(--toolbar-bg);
  border-top: 1px solid var(--border);
}

.nav-btn {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: var(--subtext);
  transition: background 0.15s, color 0.15s;
}

.nav-btn:hover {
  background: var(--hover);
  color: var(--text);
}

.nav-btn:active {
  background: #2a2a2a;
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.nav-btn:disabled:hover {
  background: transparent;
  color: var(--subtext);
}

.nav-btn svg {
  width: 16px;
  height: 16px;
}

#reload-btn.loading svg {
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.address-bar-container {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--address-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 10px 0 12px;
  height: 34px;
  transition: border-color 0.2s, box-shadow 0.2s;
  margin: 0 4px;
  min-width: 0;
}

.address-bar-container:focus-within {
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.04), 0 0 16px rgba(255,255,255,0.02);
}

.favicon-display {
  flex: 0 0 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--subtext);
}

.favicon-display svg {
  width: 13px;
  height: 13px;
}

.favicon-display img {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  object-fit: contain;
}

.address-bar {
  flex: 1 1 auto;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  min-width: 0;
  caret-color: var(--accent);
}

.address-bar::placeholder {
  color: var(--subtext);
  font-size: 12px;
}

.address-bar:focus {
  color: var(--text);
}

.go-btn {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  color: var(--subtext);
  padding: 0;
  transition: background 0.15s, color 0.15s;
}

.go-btn:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text);
}

.go-btn svg {
  width: 13px;
  height: 13px;
}

.tabs-container::after {
  content: '';
  flex: 0 0 8px;
}

::selection {
  background: rgba(255,255,255,0.15);
  color: var(--text);
}

/* ── Control Panel (Ctrl+Y) ─────────────────────────────── */
#ctrl-panel-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
}

#ctrl-panel-overlay.open {
  display: flex;
}

#ctrl-panel {
  background: #141414;
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 340px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  animation: ctrlPanelIn 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes ctrlPanelIn {
  from { opacity: 0; transform: scale(0.95) translateY(-6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.ctrl-panel-header {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ctrl-panel-header svg {
  width: 14px;
  height: 14px;
  color: var(--subtext);
  flex: 0 0 14px;
}

.ctrl-panel-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--subtext);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ctrl-panel-shortcut {
  margin-left: auto;
  font-size: 10px;
  color: #444;
  letter-spacing: 0.04em;
}

.ctrl-panel-list {
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ctrl-panel-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  transition: background 0.12s;
}

.ctrl-panel-item:hover {
  background: var(--hover);
}

.ctrl-panel-item-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: #1e1e1e;
  border: 1px solid #2a2a2a;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 30px;
  color: var(--subtext);
}

.ctrl-panel-item-icon svg {
  width: 14px;
  height: 14px;
}

.ctrl-panel-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.ctrl-panel-item-url {
  font-size: 11px;
  color: var(--subtext);
  margin-top: 1px;
}

/* ── Ctrl+Y hint note ───────────────────────────────────── */
#ctrl-panel-hint {
  position: fixed;
  bottom: 14px;
  left: 14px;
  z-index: 9000;
  font-size: 13px;
  font-weight: 600;
  color: #e5e7eb;
  letter-spacing: 0.04em;
  background: rgba(17, 24, 39, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  padding: 6px 10px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  user-select: none;
}