:root {
  --bg: #080a0f;
  --surface: #0e1119;
  --surface-raised: #141824;
  --surface-hover: rgba(255, 255, 255, 0.06);
  --text: #e8e8f0;
  --muted: #7a7e90;
  --accent: #7b2eff;
  --accent-2: #00c6ff;
  --outline: #1f2533;
  --outline-soft: rgba(255, 255, 255, 0.06);
  --danger: #e0445c;
  color-scheme: dark;
}

@font-face {
  font-family: "InterVariable";
  src: url("../assets/fonts/InterVariable.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "InterVariable", "Segoe UI", system-ui, sans-serif;
  user-select: none;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  color: var(--text);
  cursor: pointer;
}

button:disabled {
  cursor: default;
  opacity: 0.3;
}

/* ── Chrome shell ───────────────────────────────────────────── */

.nebula-chrome {
  display: grid;
  grid-template-rows: 42px 52px 1fr;
  height: 100%;
  border-bottom: 1px solid var(--outline);
  overflow: visible;
}

/* ── Title row ──────────────────────────────────────────────── */

.title-row,
.toolbar {
  display: flex;
  align-items: center;
}

.title-row {
  gap: 10px;
  padding: 0 0 0 12px;
  background: var(--bg);
}

/* ── Tabs ───────────────────────────────────────────────────── */

.tabs {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  min-width: 0;
  flex: 1;
  height: 100%;
}

.tab {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  width: min(260px, 38vw);
  height: 33px;
  padding: 0 14px;
  border-radius: 10px 10px 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
  transition: background 120ms, color 120ms;
}

.tab:hover:not(.active) {
  background: var(--surface);
  color: var(--text);
}

.tab.active {
  background: var(--surface-raised);
  border-color: var(--outline);
  color: var(--text);
}

.tab-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.tab-favicon,
.tab-loading {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  border-radius: 3px;
}

.tab-favicon {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  opacity: 0.85;
  border-radius: 999px;
  overflow: hidden;
}

.tab-favicon.has-favicon {
  background: transparent;
  border-radius: 3px;
  opacity: 1;
}

.tab-favicon.empty {
  width: 13px;
  height: 13px;
}

.tab-favicon img {
  display: block;
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.tab-loading {
  width: 13px;
  height: 13px;
  border: 2px solid rgba(0, 198, 255, 0.2);
  border-top-color: var(--accent-2);
  border-radius: 999px;
  animation: spin 0.8s linear infinite;
}

.tab-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  opacity: 0;
  transition: background 120ms, color 120ms, opacity 120ms;
}

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

.tab-close:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.tab-add {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: 2px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  transition: background 120ms, color 120ms, border-color 120ms;
}

.tab-add:hover {
  background: var(--surface-hover);
  border-color: var(--outline);
  color: var(--text);
}

/* ── Window controls ────────────────────────────────────────── */

.window-controls {
  display: flex;
  align-self: stretch;
  margin: 0;
  overflow: hidden;
  border-top-right-radius: 10px;
}

.window-controls button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  background: transparent;
  color: var(--muted);
  transition: background 100ms, color 100ms;
}

.window-controls button:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.window-controls .close:hover {
  background: var(--danger);
  color: white;
}

/* ── Toolbar ────────────────────────────────────────────────── */

.toolbar {
  gap: 4px;
  padding: 0 12px;
  background: var(--surface-raised);
  border-top: 1px solid var(--outline);
  overflow: visible;
}

/* ── Lucide icon sizing ─────────────────────────────────────── */

/* Lucide replaces <i data-lucide> with <svg>; enforce consistent size */
.icon-button svg,
.tab-close svg,
.tab-add svg,
.window-controls svg {
  width: 16px;
  height: 16px;
  display: block;
  stroke-width: 1.75;
  pointer-events: none;
}

/* ── Icon buttons ───────────────────────────────────────────── */

.icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 9px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  flex-shrink: 0;
  transition: background 120ms, color 120ms, border-color 120ms;
}

.icon-button:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--outline);
  color: var(--text);
}

/* ── Address bar ────────────────────────────────────────────── */

.address-shell {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 160px;
  height: 36px;
  flex: 1;
  margin: 0 4px;
  overflow: hidden;
  border: 1px solid var(--outline);
  border-radius: 10px;
  background: var(--surface);
  transition: border-color 140ms, box-shadow 140ms;
}

.address-shell:focus-within {
  border-color: rgba(123, 46, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(123, 46, 255, 0.12);
}

.address-shell input {
  width: 100%;
  height: 100%;
  border: 0;
  outline: 0;
  padding: 0 16px;
  background: transparent;
  color: var(--text);
  font-size: 0.84rem;
}

.address-shell input::placeholder {
  color: var(--muted);
}

.progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 0%;
  pointer-events: none;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
  opacity: 0.7;
  transition: width 120ms ease, opacity 160ms ease;
}

/* ── Utilities ──────────────────────────────────────────────── */

.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;
}

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