:root{color-scheme:light;--bg: #eef5ff;--bg-accent: #dcecff;--surface: rgba(255, 255, 255, .88);--surface-strong: #ffffff;--border: rgba(35, 86, 160, .14);--text: #12233f;--muted: #5e7394;--accent: #2563eb;--accent-strong: #1d4ed8;--success: #15803d;--danger: #c2410c;--shadow: 0 24px 60px rgba(34, 86, 160, .14);font-family:IBM Plex Sans,Avenir Next,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top left,rgba(255,255,255,.95),transparent 28%),linear-gradient(135deg,#f4f9ff,#dbeafe 52%,#eef6ff);color:var(--text)}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:14px;padding:.8rem 1rem;transition:transform .15s ease,background-color .15s ease,opacity .15s ease}button:hover{transform:translateY(-1px)}input,select,textarea{width:100%;margin-top:.35rem;border:1px solid var(--border);border-radius:12px;padding:.8rem .9rem;background:var(--surface-strong)}label{display:block;font-size:.95rem;color:var(--muted)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.9rem .75rem;border-bottom:1px solid var(--border);vertical-align:middle}th{font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.page-frame{min-height:100vh;padding:1.5rem}.loading-screen,.unlock-screen{min-height:calc(100vh - 3rem);display:grid;place-items:center}.unlock-card,.card{background:var(--surface);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.45);box-shadow:var(--shadow);border-radius:28px;padding:1.5rem}.unlock-card{max-width:520px}.app-shell{display:grid;grid-template-columns:280px minmax(0,1fr);gap:1.5rem}.sidebar{padding:1.75rem;border-radius:28px;background:linear-gradient(180deg,#143a8afa,#1d4ed8f5);color:#eff6ff;display:flex;flex-direction:column;justify-content:space-between;min-height:calc(100vh - 3rem);box-shadow:var(--shadow)}.sidebar-copy,.section-copy{color:var(--muted);line-height:1.5}.sidebar-copy{color:#eff6ffc7}.content{display:flex;flex-direction:column;gap:1.5rem}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem}.nav{display:grid;gap:.5rem}.nav a{color:#eff6ffe0;text-decoration:none;padding:.85rem 1rem;border-radius:14px}.nav a.active{background:#ffffff29;color:#fff}.primary-button{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-strong) 100%);color:#fff}.secondary-button{background:#2563eb1a;color:var(--text)}.sidebar-lock-button{background:#ffffff2e;color:#f8fbff;border:1px solid rgba(255,255,255,.24)}.sidebar-lock-button:hover{background:#ffffff47}.button-row{display:flex;flex-wrap:wrap;gap:.75rem}.button-row.tight{gap:.5rem}.stack,.stack-large{display:grid;gap:1rem}.stack-large{gap:1.5rem}.inline-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;align-items:end}.page-grid{display:grid;gap:1.5rem;grid-template-columns:repeat(2,minmax(0,1fr))}.timer-card{align-content:start}.timer-display{font-family:IBM Plex Mono,monospace;font-size:clamp(2.5rem,7vw,4.5rem);letter-spacing:-.06em}.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:.78rem;color:var(--muted);margin:0 0 .4rem}.metrics{display:grid;gap:1rem}.metrics.three-up{grid-template-columns:repeat(3,minmax(0,1fr))}.metric-card h2,h1,h2{margin:0}.alert{padding:.9rem 1rem;border-radius:14px}.alert.error{background:#aa3e351f;color:var(--danger)}.alert.success{background:#2f7a4a1f;color:var(--success)}.empty-state{padding:1rem;border:1px dashed var(--border);border-radius:16px;color:var(--muted)}.segmented-control{display:inline-flex;gap:.5rem;background:#2563eb14;padding:.35rem;border-radius:18px}.segmented-control button{background:transparent}.segmented-control button.is-active{background:#fff;box-shadow:0 10px 24px #2563eb1f}.inline-badge{display:inline-flex;align-items:center;padding:.25rem .55rem;background:#2f7a4a1f;color:var(--success);border-radius:999px;font-size:.8rem}.inline-badge.is-archived{background:#5e739426;color:var(--muted)}.table-wrap{overflow:auto;width:100%}.history-header{display:flex;align-items:center;justify-content:space-between;gap:1rem}.secondary-link-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:.8rem 1rem;border-radius:14px;background:#2563eb1a;color:var(--text);text-decoration:none}.select-label{min-width:250px}.mono{font-family:IBM Plex Mono,monospace}@media (max-width: 980px){.app-shell,.page-grid,.metrics.three-up{grid-template-columns:1fr}.sidebar{min-height:auto}.topbar,.history-header{flex-direction:column;align-items:stretch}}