@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--bg-color:#0d1117;--bg-raised:#161b22;--bg-card:#1c2430;--bg-input:#0d1117;--primary:#4facfe;--primary-glow:#4facfe33;--success:#3fb950;--danger:#f85149;--warning:#d29922;--border:#30363d;--border-bright:#484f58;--text-primary:#e6edf3;--text-secondary:#8b949e;--text-muted:#6e7681;--font-main:"Inter", -apple-system, BlinkMacSystemFont, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-primary);flex-direction:column;min-height:100vh;display:flex}#root{flex-direction:column;flex:1;display:flex}.auth-container{background:radial-gradient(at top,#1a2740 0%,#0d1117 60%);flex:1;justify-content:center;align-items:center;padding:2rem;display:flex}.auth-card{background:var(--bg-card);box-shadow:0 0 0 1px var(--border), 0 16px 48px #0009;border-radius:16px;width:100%;max-width:420px;padding:2.5rem}.auth-card h1{background:linear-gradient(90deg,#4facfe,#00f2fe);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:1.75rem;font-weight:700}.auth-card p{color:var(--text-secondary);margin-bottom:2rem;font-size:.95rem}.input-group{flex-direction:column;margin-bottom:1.25rem;display:flex}.input-group label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);margin-bottom:.5rem;font-size:.8rem;font-weight:600}.input-group input{background:var(--bg-input);border:1px solid var(--border-bright);color:var(--text-primary);border-radius:8px;outline:none;padding:.75rem 1rem;font-size:1rem;transition:border-color .15s,box-shadow .15s}.input-group input::placeholder{color:var(--text-muted)}.input-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.btn-primary{color:#0d1117;cursor:pointer;background:linear-gradient(90deg,#4facfe,#00f2fe);border:none;border-radius:8px;width:100%;margin-top:.5rem;padding:.85rem;font-size:1rem;font-weight:700;transition:opacity .15s,transform .1s}.btn-primary:hover{opacity:.9}.btn-primary:active{transform:scale(.98)}.dashboard-container{flex:1;width:100%;max-width:1400px;margin:0 auto;padding:1.5rem 2rem}.header{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:1rem 1.5rem;display:flex}.header h1{background:linear-gradient(90deg,#4facfe,#00f2fe);-webkit-text-fill-color:transparent;white-space:nowrap;-webkit-background-clip:text;background-clip:text;font-size:1.4rem;font-weight:700}.tabs{background:var(--bg-input);border:1px solid var(--border);border-radius:8px;gap:4px;padding:4px;display:flex}.tab{cursor:pointer;color:var(--text-secondary);-webkit-user-select:none;user-select:none;border-radius:6px;padding:7px 18px;font-size:.9rem;font-weight:500;transition:color .15s,background .15s}.tab:hover{color:var(--text-primary)}.active-tab{background:#4facfe26;border:1px solid #4facfe4d;color:#4facfe!important}.logout-btn{color:var(--text-secondary);border:1px solid var(--border-bright);cursor:pointer;white-space:nowrap;background:0 0;border-radius:8px;padding:.5rem 1rem;font-size:.9rem;font-weight:500;transition:all .15s}.logout-btn:hover{color:var(--text-primary);border-color:var(--primary);background:var(--primary-glow)}.table-container{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden}table{border-collapse:collapse;width:100%}th{background:var(--bg-raised);text-align:left;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid var(--border);padding:.875rem 1.25rem;font-size:.78rem;font-weight:600}td{border-bottom:1px solid var(--border);color:var(--text-primary);vertical-align:middle;padding:1rem 1.25rem;font-size:.95rem}tr:last-child td{border-bottom:none}tr:hover td{background:#4facfe0a}.role-select,.assignment-select{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border-bright);cursor:pointer;width:100%;font-size:.875rem;font-family:var(--font-main);border-radius:6px;outline:none;padding:.45rem .75rem;transition:border-color .15s,box-shadow .15s}.role-select{width:auto;min-width:160px}.role-select:focus,.assignment-select:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-glow)}.badge{text-transform:uppercase;letter-spacing:.04em;border-radius:20px;padding:.25rem .65rem;font-size:.72rem;font-weight:600;display:inline-block}.badge.pending{color:#f85149;background:#f851491f;border:1px solid #f851494d}.badge.active{color:#3fb950;background:#3fb9501f;border:1px solid #3fb9504d}.error-banner{color:#f85149;text-align:center;background:#f851491a;border:1px solid #f851494d;border-radius:8px;margin-bottom:1.25rem;padding:.875rem 1rem;font-size:.875rem}