/* ═══════════════════════════════════════════════
   assets/style.css  —  fs.util shared stylesheet
   ═══════════════════════════════════════════════ */

/* ── Tokens ─────────────────────────────────── */
:root {
  --bg:          #0d1117;
  --surface:     #161b22;
  --surface2:    #21262d;
  --border:      #30363d;
  --accent:      #58a6ff;
  --accent2:     #3fb950;
  --warn:        #e3b341;
  --danger:      #f78166;
  --muted:       #6e7681;
  --text:        #c9d1d9;
  --text-dim:    #8b949e;
  --sidebar-w:   220px;
  --topbar-h:    48px;
  --radius:      8px;
  --mono:        'JetBrains Mono', monospace;
  --sans:        'Sora', sans-serif;
}

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

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

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  display: flex;
}

/* ── Sidebar ─────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: fixed;
  top: 0; left: 0;
  z-index: 200;
  transition: width .22s ease, transform .22s ease;
  overflow: hidden;
}
.sidebar.no-transition { transition: none !important; }

.sidebar.collapsed {
  width: 52px;
}
.sidebar.collapsed .logo-util,
.sidebar.collapsed .logo-ver,
.sidebar.collapsed .nav-group-label,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .nav-home span,
.sidebar.collapsed .nav-badge,
.sidebar.collapsed .sf-tag {
  opacity: 0;
  pointer-events: none;
  width: 0;
  overflow: hidden;
}
.sidebar.collapsed .nav-item,
.sidebar.collapsed .nav-home {
  justify-content: center;
  padding: 8px 0;
}

/* Logo */
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 14px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
}
.logo-link { display: flex; align-items: center; gap: 0; text-decoration: none; }
.logo-mark { font-family: var(--mono); font-weight: 700; font-size: .95rem; color: var(--accent); }
.logo-dot  { font-family: var(--mono); font-weight: 700; font-size: .95rem; color: var(--accent2); }
.logo-util { font-family: var(--mono); font-weight: 700; font-size: .95rem; color: var(--text); transition: opacity .2s, width .2s; }
.logo-ver  { font-size: .58rem; color: var(--muted); background: var(--surface2); padding: 1px 6px; border-radius: 10px; border: 1px solid var(--border); margin-left: auto; flex-shrink: 0; transition: opacity .2s; }

/* Nav */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.nav-home {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px;
  margin: 0 8px 4px;
  border-radius: var(--radius);
  font-size: .78rem;
  font-family: var(--mono);
  color: var(--text-dim);
  text-decoration: none;
  transition: all .14s;
  white-space: nowrap;
}
.nav-home:hover { background: var(--surface2); color: var(--text); }
.nav-home.active { background: var(--surface2); color: var(--accent); }
.nav-home i { font-size: .9rem; flex-shrink: 0; width: 16px; text-align: center; }

.nav-group { margin-top: 8px; }
.nav-group-label {
  display: block;
  font-size: .58rem;
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 6px 22px 4px;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity .2s, width .2s;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px;
  margin: 1px 8px;
  border-radius: var(--radius);
  font-size: .78rem;
  font-family: var(--mono);
  color: var(--text-dim);
  text-decoration: none;
  transition: all .14s;
  white-space: nowrap;
  overflow: hidden;
  position: relative;
}
.nav-item i { font-size: .9rem; flex-shrink: 0; width: 16px; text-align: center; transition: color .14s; }
.nav-item span { overflow: hidden; text-overflow: ellipsis; transition: opacity .2s, width .2s; flex: 1; }
.nav-item:hover { background: var(--surface2); color: var(--text); }
.nav-item:hover i { color: var(--tool-color, var(--accent)); }
.nav-item.active {
  background: color-mix(in srgb, var(--tool-color, var(--accent)) 12%, transparent);
  color: var(--tool-color, var(--accent));
  border-left: 2px solid var(--tool-color, var(--accent));
  padding-left: 12px;
}
.nav-item.active i { color: var(--tool-color, var(--accent)); }

/* Nav badge */
.nav-badge {
  font-size: .55rem;
  font-family: var(--mono);
  padding: 1px 5px;
  border-radius: 10px;
  margin-left: auto;
  flex-shrink: 0;
  text-transform: uppercase;
  letter-spacing: .04em;
  transition: opacity .2s;
}
.nav-badge.beta    { background: #1f2d3d; color: var(--accent); border: 1px solid #1f3a5f; }
.nav-badge.wip     { background: #2d1f1f; color: var(--danger); border: 1px solid #5f1f1f; opacity: .7; }
.nav-badge.stable  { display: none; }

/* Sidebar footer */
.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 10px 14px;
  flex-shrink: 0;
  overflow: hidden;
}
.sf-tag {
  font-size: .6rem;
  font-family: var(--mono);
  color: var(--muted);
  transition: opacity .2s;
}

/* ── Page shell ───────────────────────────────── */
.page-shell {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  transition: margin-left .22s ease;
  min-width: 0;
}
.page-shell.sidebar-collapsed { margin-left: 52px; }

/* ── Topbar ───────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 18px;
  flex-shrink: 0;
}

.sidebar-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  width: 30px; height: 30px;
  border-radius: 6px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
  flex-shrink: 0;
  transition: all .14s;
}
.sidebar-toggle:hover { border-color: var(--accent); color: var(--accent); background: var(--surface2); }

.topbar-crumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .72rem;
  font-family: var(--mono);
  color: var(--muted);
  min-width: 0;
}
.crumb-home { color: var(--muted); text-decoration: none; transition: color .1s; }
.crumb-home:hover { color: var(--accent); }
.crumb-sep  { color: var(--border); }
.crumb-cat  { color: var(--muted); }
.crumb-cur  { display: flex; align-items: center; gap: 5px; font-weight: 600; }

.topbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}
.topbar-app {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--muted);
}

/* Status pills */
.status-pill {
  font-size: .6rem;
  font-family: var(--mono);
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: .06em;
}
.status-pill.beta  { background: #1f2d3d; color: var(--accent); border: 1px solid #1f3a5f; }
.status-pill.wip   { background: #2d1f1f; color: var(--danger); border: 1px solid #5f1f1f; }

/* ── Main content area ────────────────────────── */
.page-main {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* ── Shared buttons ───────────────────────────── */
.btn-u {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 600;
  padding: 6px 13px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  cursor: pointer;
  transition: all .14s;
  display: inline-flex; align-items: center; gap: 6px;
  text-decoration: none;
  white-space: nowrap;
}
.btn-u:hover { border-color: var(--accent); color: var(--accent); }
.btn-u.accent  { background: var(--accent);  color: #0d1117; border-color: var(--accent);  }
.btn-u.accent:hover  { background: #79c0ff; }
.btn-u.success { background: var(--accent2); color: #0d1117; border-color: var(--accent2); }
.btn-u.success:hover { background: #56d364; }
.btn-u.warn    { background: var(--warn);    color: #0d1117; border-color: var(--warn);    }
.btn-u.danger  { background: var(--danger);  color: #0d1117; border-color: var(--danger);  }
.btn-u:disabled { opacity: .4; cursor: default; pointer-events: none; }

/* ── Toast ────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 20px; right: 20px;
  z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast-msg {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 9px 15px;
  font-size: .72rem;
  font-family: var(--mono);
  color: var(--text);
  box-shadow: 0 4px 20px #00000066;
  animation: toastIn .2s ease;
  max-width: 280px;
}
@keyframes toastIn {
  from { transform: translateX(16px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ── Scrollbars ───────────────────────────────── */
* { scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
::-webkit-scrollbar       { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }