/* ─── layout.css ──────────────────────────────────────────────────────────────
 * Main chrome: header toolbar, three-column grid (sidebar | editor | preview),
 * editor pane, preview pane, file tab bar, status bar, CodeMirror overrides,
 * and responsive breakpoints.
 * ─────────────────────────────────────────────────────────────────────────── */

/* Keep main chrome above the fixed body::before/after orbs */
header, .left, .main, .work-tabs { position: relative; z-index: 1; }

/* ── Header toolbar ────────────────────────────────────────────────────────── */
header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(20px);
  flex-shrink: 0;
  position: relative;
  z-index: 10;
}
/* Animated conic gradient line above the header */
header::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: -60px;
  height: 60px;
  background-image: conic-gradient(from 180deg at 50% 100%,
    transparent 0, transparent 27%,
    #ff3998 27%, #d764ff 36.04%, #00b5ff 58.23%, #0fd 63%, #54fa43 73%,
    transparent 73%, transparent 100%);
  animation: faeGradientLine 2.5s linear infinite;
  pointer-events: none;
}

/* ── Logo / brand ─────────────────────────────────────────────────────────── */
.logo {
  font-family: 'Asimovian', 'Francois One', 'Inter', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  margin-right: 4px;
  flex-shrink: 0;
}
.logo-sep {
  width: 1px; height: 20px;
  background: var(--border);
  margin: 0 8px;
  flex-shrink: 0;
}
.logo-sub {
  font-size: 11px; font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Status chip (room name, app name) ───────────────────────────────────── */
.chip {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 11px;
  color: var(--muted);
  font-family: 'Cascadia Code', Consolas, monospace;
}
.chip b { color: #ffffff; font-weight: 600; }

/* ── Header layout helpers ───────────────────────────────────────────────── */
.grow { flex: 1; }

/* ── Header buttons ──────────────────────────────────────────────────────── */
.btn {
  background: rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.8);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px; font-weight: 500;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.15s;
}
.btn:hover { background: rgba(255,255,255,0.14); color: #fff; }

.btn-danger {
  color: #ffb8aa;
  border-color: rgba(244, 135, 113, 0.38);
}
.btn-danger:hover {
  background: rgba(244, 135, 113, 0.15);
  border-color: rgba(244, 135, 113, 0.72);
  color: #fff;
}

.btn-primary {
  background: linear-gradient(135deg, var(--fae-color1) 0%, var(--fae-color2) 100%);
  border-color: transparent;
  color: #000000; font-weight: 700;
  animation: faeHueRotate 5s linear infinite;
}
.btn-primary:hover {
  filter: brightness(1.1);
  background: linear-gradient(135deg, var(--fae-color1) 0%, var(--fae-color2) 100%);
}

/* ── Connection status label ─────────────────────────────────────────────── */
.conn {
  font-size: 11px; color: var(--muted);
  font-family: 'Cascadia Code', Consolas, monospace;
}
.conn b { color: var(--fae-color2); }
.conn.disconnected b { color: var(--red); }
.conn.local-mode { color: var(--fae-color2); font-weight: 600; }
.conn.local-mode b { color: var(--fae-color2); }

#local-save-indicator {
  font-size: 10px; color: var(--muted);
  margin-left: 2px;
  transition: color 0.3s;
}
#local-save-indicator.saving { color: var(--fae-color2); }
#local-save-indicator.saved  { color: var(--green); }

/* ── Three-column main layout ────────────────────────────────────────────── */
.main {
  flex: 1;
  display: grid;
  grid-template-columns: var(--left-w) 1fr minmax(300px, var(--preview-w));
  min-height: 0;
}

/* ── File-tab bar (open file tabs + view-mode buttons) ───────────────────── */
.work-tabs {
  height: var(--tab-h);
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,15,0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  min-width: 0;
  gap: 8px;
}
.global-work-tabs {
  padding-left: var(--left-w);
  flex-shrink: 0;
}

/* ── Open-file tabs (scrollable row) ────────────────────────────────────── */
.open-tabs {
  display: flex;
  align-items: stretch;
  overflow-x: auto;
  overflow-y: hidden;
  min-width: 0;
  scrollbar-width: thin;
  flex: 1;
}
.open-tab {
  min-width: 130px; max-width: 220px;
  border-right: 1px solid var(--border);
  border-left: 1px solid transparent;
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 12px;
  display: flex; align-items: center; gap: 6px;
  padding: 0 10px;
  cursor: pointer; user-select: none;
  transition: background 0.15s, color 0.15s;
}
.open-tab:first-child { border-left-color: var(--border); }
.open-tab:hover { background: rgba(255,255,255,0.07); color: var(--text); }
.open-tab.active {
  color: #ffffff;
  background: rgba(255,255,255,0.05);
  box-shadow: inset 0 2px 0 var(--fae-color2);
  border-bottom: none;
}
.open-tab-name {
  overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; flex: 1;
}
.open-tab-close {
  border: none; background: transparent; color: var(--muted);
  width: 18px; height: 18px; line-height: 18px;
  border-radius: 3px; text-align: center;
  cursor: pointer; flex-shrink: 0; font-size: 12px;
}
.open-tab-close:hover { background: #4a4d53; color: #ffffff; }

/* ── View-mode buttons (Split / Code / Preview) ─────────────────────────── */
.view-tabs {
  display: flex; align-items: center;
  padding-right: 6px; gap: 4px; flex-shrink: 0;
}
.view-tab {
  border: 1px solid #3c3c3c; background: #2d2d30; color: var(--muted);
  border-radius: 3px; font-size: 11px; padding: 4px 8px;
  cursor: pointer;
  font-family: 'Cascadia Code', Consolas, monospace;
}
.view-tab:hover { color: #ffffff; background: #3a3d41; }
.view-tab.active {
  color: #ffffff; border-color: #0a5d9b; background: #094771;
}

/* ── Editor pane ─────────────────────────────────────────────────────────── */
.editor-pane {
  display: flex; flex-direction: column;
  min-height: 0; min-width: 0; overflow: hidden;
  border-right: 1px solid var(--border);
}
.editor-head {
  min-height: 36px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px;
  padding: 0 12px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  font-family: 'Cascadia Code', Consolas, monospace;
  font-size: 12px;
}
.editor-file { color: var(--fae-color2); font-weight: 600; }
.editor-wrap { flex: 1; min-height: 0; min-width: 0; overflow: hidden; }

/* ── Preview pane ────────────────────────────────────────────────────────── */
.preview-pane {
  display: flex; flex-direction: column;
  min-height: 0; min-width: 0; overflow: hidden;
  background: #1e1e1e;
  position: relative;
}
.preview-head {
  height: 36px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 10px;
  font-size: 12px; color: var(--muted);
  background: #2d2d30;
}
#preview-frame {
  width: 100%; flex: 1;
  border: none; background: white;
}

/* ── Status bar ──────────────────────────────────────────────────────────── */
.status {
  height: 24px;
  border-top: 1px solid #0b5cad;
  display: flex; align-items: center; gap: 12px;
  padding: 0 10px;
  color: #ffffff; font-size: 11px;
  font-family: 'Cascadia Code', Consolas, monospace;
  flex-shrink: 0;
  background: #007acc;
}

/* ── CodeMirror overrides ────────────────────────────────────────────────── */
.CodeMirror {
  height: 100% !important; width: 100% !important;
  font-family: 'Cascadia Code', Consolas, monospace !important;
  font-size: 13px !important; line-height: 1.6 !important;
  background: transparent !important;
}
.CodeMirror-scroll {
  overflow-x: auto !important; overflow-y: auto !important;
}
.CodeMirror-gutters {
  background: #1e1e1e !important;
  border-right: 1px solid var(--border) !important;
}
/* Autocomplete dropdown */
.CodeMirror-hints {
  background: #252526 !important;
  border: 1px solid #3c3c3c !important;
  border-radius: 4px !important;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5) !important;
  font-family: 'Cascadia Code', Consolas, monospace !important;
  font-size: 12px !important; z-index: 500 !important;
  max-height: 220px !important;
}
.CodeMirror-hint {
  color: #cccccc !important; padding: 3px 10px !important;
}
li.CodeMirror-hint-active {
  background: #094771 !important; color: #ffffff !important;
}

/* ── View-mode grid variants ─────────────────────────────────────────────── */
.main.mode-code {
  grid-template-columns: var(--left-w) 1fr;
}
.main.mode-code .preview-pane { display: none; }

.main.mode-preview {
  grid-template-columns: var(--left-w) 1fr;
}
.main.mode-preview .editor-pane { display: none; }

/* ── Responsive layout (≤ 1050 px) ──────────────────────────────────────── */
@media (max-width: 1050px) {
  .main {
    grid-template-columns: 220px 1fr;
    grid-template-rows: 1fr 260px;
  }
  .global-work-tabs { padding-left: 220px; }
  .preview-pane {
    grid-column: 1 / 3;
    border-top: 1px solid var(--border);
  }
  .main.mode-code {
    grid-template-columns: 220px 1fr;
    grid-template-rows: 1fr;
  }
  .main.mode-preview {
    grid-template-columns: 220px 1fr;
    grid-template-rows: 1fr;
  }
  .main.mode-code .preview-pane,
  .main.mode-preview .editor-pane { display: none; }
}