:root{--background: #fdf3ed;--foreground: #001133;--surface: #f1eae4;--card: #ffffff;--primary: #e65d33;--secondary: #f0e4db;--muted: #f1eae4;--muted-foreground: #525f7a;--destructive: #ef4343;--border: #e0d7d1;--ring: #e65d33;--paper: var(--background);--paper-raised: var(--card);--ink: var(--foreground);--ink-soft: var(--muted-foreground);--ink-faint: var(--muted-foreground);--line: var(--border);--line-soft: var(--surface);--accent: var(--primary);--accent-soft: var(--secondary);--on-track: var(--foreground);--on-track-bg: var(--muted);--watch: var(--primary);--watch-bg: var(--secondary);--urgent: var(--destructive);--urgent-bg: var(--secondary);--font-serif: "Source Serif 4", Georgia, serif;--font-sans: "IBM Plex Sans", system-ui, -apple-system, 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var(--line);background:var(--paper);color:var(--ink);cursor:pointer}.btn:hover{border-color:var(--ink-faint)}.btn-primary{border-color:var(--accent);background:var(--accent);color:var(--card)}.btn-primary:hover{background:var(--foreground);border-color:var(--foreground)}.btn-google{border-color:var(--line);background:var(--card);color:var(--ink);display:flex;align-items:center;justify-content:center;gap:10px;width:100%;font-weight:600}.btn-google:hover{border-color:var(--ink-faint);background:var(--paper)}.btn-google:disabled{opacity:.6;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--ink-soft)}.filter-row{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}.filter-chip{font-size:13px;padding:6px 12px;border:1px solid var(--line);border-radius:20px;background:transparent;color:var(--ink-soft);cursor:pointer;transition:background .12s ease,color .12s ease,border-color .12s 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tr.row-expanded{background:var(--accent-soft)}.tutee-name-row{display:flex;align-items:flex-start;gap:10px}.student-search{max-width:420px;margin-top:8px}.student-search-label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:6px}.student-search-row{display:flex;align-items:stretch;gap:8px}.student-search-input{flex:1;min-width:0}.student-search-find{flex-shrink:0;padding:8px 14px;white-space:nowrap}.expand-panel{padding:8px 4px 16px;background:var(--paper)}.student-overview{display:grid;grid-template-columns:minmax(280px,1fr) minmax(0,1.15fr);gap:20px;align-items:stretch;min-height:420px}.student-overview-left{display:flex;flex-direction:column;gap:14px;min-width:0;min-height:0}.student-overview-totals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.student-overview-total{border:1px solid var(--line);border-radius:4px;background:transparent;padding:12px 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