:root {
  --bg: #0f1419;
  --panel: #1a2129;
  --panel-2: #222c37;
  --border: #2c3a47;
  --text: #d7e0e8;
  --muted: #8a98a6;
  --accent: #4aa3ff;
  --accent-2: #2b7fd4;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); font-size: 13px; margin-top: 8px; }

/* --- Login --- */
.login-screen {
  display: flex; align-items: center; justify-content: center; height: 100vh;
}
.login-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 32px; width: 320px; display: flex; flex-direction: column; gap: 12px;
}
.login-box h1 { margin: 0; font-size: 20px; }
.login-box input {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px;
  padding: 10px 12px; color: var(--text); font-size: 14px;
}
.login-box button {
  background: var(--accent-2); color: #fff; border: none; border-radius: 6px;
  padding: 11px; font-size: 14px; font-weight: 600; cursor: pointer; margin-top: 4px;
}
.login-box button:hover { background: var(--accent); }

/* --- Layout --- */
.app { display: flex; height: 100vh; }

.sidebar {
  width: 300px; min-width: 300px; background: var(--panel);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
}
.sidebar-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  font-weight: 600; font-size: 14px;
}
.link-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13px; }
.link-btn:hover { color: var(--accent); }

.snapshot-list { overflow-y: auto; flex: 1; padding: 8px; }
.snap-daygroup { margin-bottom: 4px; }
.snap-daygroup > .day-label {
  font-size: 11px; text-transform: uppercase; color: var(--muted);
  padding: 8px 8px 4px; letter-spacing: .5px;
}
.snap-item {
  padding: 8px 10px; border-radius: 6px; cursor: pointer; font-size: 13px;
  display: flex; flex-direction: column; gap: 2px;
}
.snap-item:hover { background: var(--panel-2); }
.snap-item.active { background: var(--accent-2); }
.snap-item.active .snap-meta { color: #dbeaff; }
.snap-time { font-weight: 600; }
.snap-meta { color: var(--muted); font-size: 11px; }

/* --- Main --- */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--border); min-height: 56px;
}
.breadcrumb { font-size: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.breadcrumb .crumb { color: var(--accent); cursor: pointer; }
.breadcrumb .crumb:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--muted); margin: 0 4px; }
.breadcrumb .current { color: var(--text); }

.btn {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 8px 12px; border-radius: 6px; cursor: pointer; font-size: 13px; white-space: nowrap;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }

.status { padding: 10px 16px; color: var(--muted); font-size: 13px; }

.file-table { width: 100%; border-collapse: collapse; display: block; overflow-y: auto; flex: 1; }
.file-table thead, .file-table tbody { display: table; width: 100%; table-layout: fixed; }
.file-table th {
  text-align: left; font-size: 12px; color: var(--muted); font-weight: 600;
  padding: 8px 16px; border-bottom: 1px solid var(--border); position: sticky; top: 0;
  background: var(--bg);
}
.col-size { width: 120px; }
.col-date { width: 170px; }
.col-act { width: 90px; }
.file-table td { padding: 9px 16px; border-bottom: 1px solid var(--panel-2); font-size: 13px; }
.file-row:hover { background: var(--panel); }
.name-cell { display: flex; align-items: center; gap: 8px; overflow: hidden; }
.name-cell .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.name-cell.clickable { cursor: pointer; color: var(--accent); }
.icon { width: 18px; text-align: center; }
.row-dl { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; }
.row-dl:hover { color: var(--accent); }
.size-cell, .date-cell { color: var(--muted); }