:root{color-scheme:light;--bg: #f6f7fb;--surface: #ffffff;--surface-alt: #fafbff;--text: #1f2937;--text-secondary: #4b5563;--text-muted: #6b7280;--border: #e5e7eb;--border-strong: #d1d5db;--divider: #f1f3f7;--link: #2563eb;--nav-active-bg: #eef2ff;--nav-active-fg: #4338ca;--btn-primary-bg: #2563eb;--btn-primary-bg-hover: #1d4ed8;--btn-primary-fg: #ffffff;--btn-secondary-bg: #e5e7eb;--btn-secondary-bg-hover: #d1d5db;--btn-secondary-fg: #1f2937;--btn-danger-bg: #dc2626;--btn-danger-bg-hover: #b91c1c;--btn-danger-fg: #ffffff;--badge-current-bg: #ecfdf5;--badge-current-fg: #047857;--badge-due-soon-bg: #fef3c7;--badge-due-soon-fg: #92400e;--badge-overdue-bg: #fee2e2;--badge-overdue-fg: #b91c1c;--badge-not-started-bg: #e0e7ff;--badge-not-started-fg: #4338ca;--danger-text: #b91c1c;--success-text: #047857;--backdrop: rgba(15, 23, 42, .4);--shadow: rgba(0, 0, 0, .08);--login-gradient: linear-gradient(135deg, #eef2ff, #e0f2fe)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg: #0f172a;--surface: #1e293b;--surface-alt: #263449;--text: #e2e8f0;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--border: #334155;--border-strong: #475569;--divider: #263449;--link: #60a5fa;--nav-active-bg: #312e81;--nav-active-fg: #c7d2fe;--btn-primary-bg: #2563eb;--btn-primary-bg-hover: #1d4ed8;--btn-primary-fg: #ffffff;--btn-secondary-bg: #334155;--btn-secondary-bg-hover: #475569;--btn-secondary-fg: #e2e8f0;--btn-danger-bg: #dc2626;--btn-danger-bg-hover: #b91c1c;--btn-danger-fg: #ffffff;--badge-current-bg: #064e3b;--badge-current-fg: #6ee7b7;--badge-due-soon-bg: #78350f;--badge-due-soon-fg: #fcd34d;--badge-overdue-bg: #7f1d1d;--badge-overdue-fg: #fca5a5;--badge-not-started-bg: #312e81;--badge-not-started-fg: #c7d2fe;--danger-text: #fca5a5;--success-text: #6ee7b7;--backdrop: rgba(2, 6, 23, .6);--shadow: rgba(0, 0, 0, .5);--login-gradient: linear-gradient(135deg, #1e1b4b, #0c4a6e)}}:root[data-theme=dark]{color-scheme:dark;--bg: #0f172a;--surface: #1e293b;--surface-alt: #263449;--text: #e2e8f0;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--border: #334155;--border-strong: #475569;--divider: #263449;--link: #60a5fa;--nav-active-bg: #312e81;--nav-active-fg: #c7d2fe;--btn-primary-bg: #2563eb;--btn-primary-bg-hover: #1d4ed8;--btn-primary-fg: #ffffff;--btn-secondary-bg: #334155;--btn-secondary-bg-hover: #475569;--btn-secondary-fg: #e2e8f0;--btn-danger-bg: #dc2626;--btn-danger-bg-hover: #b91c1c;--btn-danger-fg: #ffffff;--badge-current-bg: #064e3b;--badge-current-fg: #6ee7b7;--badge-due-soon-bg: #78350f;--badge-due-soon-fg: #fcd34d;--badge-overdue-bg: #7f1d1d;--badge-overdue-fg: #fca5a5;--badge-not-started-bg: #312e81;--badge-not-started-fg: #c7d2fe;--danger-text: #fca5a5;--success-text: #6ee7b7;--backdrop: rgba(2, 6, 23, .6);--shadow: rgba(0, 0, 0, .5);--login-gradient: linear-gradient(135deg, #1e1b4b, #0c4a6e)}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--surface);border-bottom:1px solid var(--border);padding:.75rem 1.5rem;display:flex;justify-content:space-between;align-items:center}.app-header h1{margin:0;font-size:1.125rem}.app-header nav{display:flex;gap:.5rem}.app-header nav a{padding:.35rem .7rem;border-radius:6px;color:var(--text-secondary);font-size:.875rem;font-weight:500}.app-header nav a.active{background:var(--nav-active-bg);color:var(--nav-active-fg)}.app-header .user{display:flex;align-items:center;gap:.75rem;font-size:.875rem;color:var(--text-muted)}.container{max-width:1100px;margin:0 auto;padding:1.5rem;width:100%}.card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:1.25rem;margin-bottom:1rem}.card h2{margin-top:0}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.55rem .5rem;border-bottom:1px solid var(--divider);font-size:.9rem}th{font-weight:600;color:var(--text-secondary);background:var(--surface-alt)}.badge{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.75rem;font-weight:600}.badge-current{background:var(--badge-current-bg);color:var(--badge-current-fg)}.badge-due_soon{background:var(--badge-due-soon-bg);color:var(--badge-due-soon-fg)}.badge-overdue{background:var(--badge-overdue-bg);color:var(--badge-overdue-fg)}.badge-not_started{background:var(--badge-not-started-bg);color:var(--badge-not-started-fg)}.btn{background:var(--btn-primary-bg);color:var(--btn-primary-fg);border:0;border-radius:6px;padding:.45rem .85rem;font-size:.875rem;font-weight:500}.btn:hover{background:var(--btn-primary-bg-hover)}.btn-secondary{background:var(--btn-secondary-bg);color:var(--btn-secondary-fg)}.btn-secondary:hover{background:var(--btn-secondary-bg-hover)}.btn-danger{background:var(--btn-danger-bg);color:var(--btn-danger-fg)}.btn-danger:hover{background:var(--btn-danger-bg-hover)}.field{display:flex;flex-direction:column;gap:.25rem;margin-bottom:.75rem}.field label{font-size:.8rem;font-weight:600;color:var(--text-secondary)}.field input,.field select,.field textarea{padding:.45rem .55rem;border:1px solid var(--border-strong);border-radius:6px;background:var(--surface);color:var(--text)}.row{display:flex;gap:1rem;flex-wrap:wrap;align-items:end}.row>.field{flex:1;min-width:180px}.theme-toggle{background:transparent;border:1px solid var(--border);border-radius:6px;padding:.3rem .5rem;line-height:1;font-size:.95rem;color:var(--text)}.theme-toggle:hover{background:var(--btn-secondary-bg)}.login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--login-gradient)}.login-card{background:var(--surface);padding:2rem;border-radius:14px;box-shadow:0 10px 30px var(--shadow);max-width:380px;width:90%}.login-card h1{margin-top:0;font-size:1.5rem;text-align:center}.login-card p{color:var(--text-muted);text-align:center}.login-card .err{background:var(--badge-overdue-bg);color:var(--badge-overdue-fg);padding:.65rem;border-radius:8px;margin-bottom:1rem;font-size:.875rem;text-align:center}.login-theme-toggle{display:flex;justify-content:center;margin-top:1rem}