:root{--ink: #1b2a4a;--ink-soft: #5b667a;--paper: #eef0ea;--paper-card: #ffffff;--brass: #b8892b;--brass-soft: #e9d9b8;--sage: #52735e;--sage-soft: #dbe6de;--brick: #a6493c;--brick-soft: #f2ddd8;--border: #d8dcd2;--font-display: "Source Serif 4", Georgia, serif;--font-body: "Inter", system-ui, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, monospace;--radius: 10px;--shadow: 0 1px 2px rgba(27, 42, 74, .06), 0 4px 16px rgba(27, 42, 74, .06)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--font-display);margin:0 0 .4em;line-height:1.15}a{color:inherit}button{font-family:inherit}:focus-visible{outline:2px solid var(--brass);outline-offset:2px}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}.app-shell{max-width:640px;margin:0 auto;min-height:100%;display:flex;flex-direction:column}.top-bar{background:var(--ink);color:var(--paper);padding:18px 20px 16px;position:sticky;top:0;z-index:10}.top-bar .eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--brass-soft);margin-bottom:2px}.top-bar h1{font-size:22px;color:#fff}.content{flex:1;padding:20px 16px 96px}.week-marker{display:flex;align-items:baseline;gap:10px;margin:28px 0 12px}.week-marker:first-child{margin-top:4px}.week-marker .week-num{font-family:var(--font-mono);font-size:13px;color:var(--brass);background:var(--brass-soft);border-radius:999px;padding:3px 10px}.week-marker .week-label{font-size:13px;color:var(--ink-soft)}.task-card{background:var(--paper-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:10px;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease;text-decoration:none;color:inherit}.task-card:hover{transform:translateY(-1px);box-shadow:0 2px 4px #1b2a4a14,0 8px 20px #1b2a4a14}.task-card .task-title{font-weight:600;font-size:15px;margin-bottom:2px}.task-card .task-type{font-family:var(--font-mono);font-size:12px;color:var(--ink-soft)}.stamp{flex-shrink:0;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;border:2px solid var(--border);color:var(--ink-soft)}.stamp.done{border-color:var(--sage);color:var(--sage);background:var(--sage-soft);transform:rotate(-8deg)}.stamp.pending{border-style:dashed}.btn{font-family:var(--font-body);font-weight:600;font-size:14px;border-radius:8px;border:none;padding:12px 18px;cursor:pointer}.btn-primary{background:var(--ink);color:#fff}.btn-primary:disabled{background:var(--ink-soft);cursor:not-allowed}.btn-secondary{background:transparent;border:1px solid var(--border);color:var(--ink)}textarea.editor{width:100%;min-height:220px;border:1px solid var(--border);border-radius:var(--radius);padding:14px;font-family:var(--font-body);font-size:15px;resize:vertical;background:var(--paper-card)}.feedback-card{margin-top:18px;background:var(--paper-card);border-left:4px solid var(--brass);border-radius:0 var(--radius) var(--radius) 0;padding:16px;white-space:pre-wrap;font-size:14px;line-height:1.55}.score-badge{display:inline-block;font-family:var(--font-mono);background:var(--brass-soft);color:var(--brass);border-radius:6px;padding:3px 8px;font-size:13px;margin-bottom:10px}.progress-bar-track{background:var(--border);border-radius:999px;height:8px;overflow:hidden}.progress-bar-fill{background:var(--sage);height:100%;border-radius:999px;transition:width .3s ease}.checkpoint-alert{background:var(--brick-soft);border:1px solid var(--brick);color:var(--brick);border-radius:var(--radius);padding:12px 14px;font-size:13px;margin-bottom:16px}.chat-log{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}.chat-bubble{padding:12px 14px;border-radius:var(--radius);font-size:14px;line-height:1.5;max-width:85%}.chat-bubble.assistant{background:var(--paper-card);border:1px solid var(--border);align-self:flex-start}.chat-bubble.user{background:var(--ink);color:#fff;align-self:flex-end}.field{margin-bottom:14px}.field label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:6px}.field input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;font-size:15px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:var(--paper-card);border-top:1px solid var(--border);display:flex;justify-content:center}.bottom-nav-inner{max-width:640px;width:100%;display:flex}.bottom-nav a{flex:1;text-align:center;padding:12px 0 calc(12px + env(safe-area-inset-bottom));font-size:12px;text-decoration:none;color:var(--ink-soft)}.bottom-nav a.active{color:var(--ink);font-weight:600}