:root {
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius: 22px;
  --shadow: 0 20px 60px rgba(2, 6, 23, 0.16);
}
html[data-theme="light"] {
  --bg: #f4f7fb; --surface: #ffffff; --surface-2: #e6f4f1; --text: #0f172a; --muted: #334155;
  --border: #b7c6d6; --accent: #0f766e; --accent-strong: #0b4d49; --accent-text: #ffffff;
  --danger: #b91c1c; --warning: #854d0e; --success: #166534; --link: #0b5cad;
}
html[data-theme="dark"] {
  --bg: #07111f; --surface: #10243a; --surface-2: #163a5b; --text: #f8fafc; --muted: #d9e2ec;
  --border: #5b7898; --accent: #67e8f9; --accent-strong: #22d3ee; --accent-text: #042f3a;
  --danger: #fca5a5; --warning: #fde68a; --success: #86efac; --link: #93c5fd;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); background: radial-gradient(circle at top left, var(--surface-2), var(--bg) 34rem); color: var(--text); line-height: 1.55; }
a { color: var(--link); font-weight: 700; text-decoration-thickness: 2px; text-underline-offset: 3px; }
.skip-link { position: absolute; left: -999px; top: 1rem; background: var(--accent); color: var(--accent-text); padding: .75rem; z-index: 10; }
.skip-link:focus { left: 1rem; }
.topbar { position: sticky; top: 0; z-index: 9; display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding: 1rem clamp(1rem, 4vw, 3rem); background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.brand a { color: var(--text); text-decoration: none; font-size: 1.1rem; font-weight: 900; }
.brand-mark { font-size: 1.6rem; }
.nav-actions { display: flex; align-items: center; gap: .55rem; flex-wrap: wrap; justify-content: flex-end; }
.nav-actions a, .theme-toggle, .button { border-radius: 999px; padding: .72rem 1rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); text-decoration: none; font-weight: 800; cursor: pointer; }
.theme-toggle { font: inherit; }
.primary-link, .button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 28%, transparent); }
.outline-link, .button.secondary { background: transparent; color: var(--text); border-color: var(--accent); }
.button.ghost { background: var(--surface-2); color: var(--text); }
.button.danger { background: var(--danger); color: #ffffff; border-color: var(--danger); }
html[data-theme="dark"] .button.danger { color: #3b0505; }
.page-shell { width: min(1180px, calc(100% - 2rem)); margin: 2rem auto; }
.card { background: color-mix(in srgb, var(--surface) 96%, transparent); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(1rem, 2.8vw, 2rem); box-shadow: var(--shadow); }
.hero-grid, .grid-2, .grid-3 { display: grid; gap: 1.2rem; }
.hero-grid { grid-template-columns: minmax(0, 1.4fr) minmax(280px, .8fr); align-items: center; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.page-header { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1.2rem; }
h1 { font-size: clamp(2rem, 6vw, 4.6rem); line-height: .98; margin: .2rem 0 1rem; letter-spacing: -0.055em; }
h2 { margin-top: 0; line-height: 1.12; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 70ch; }
.muted { color: var(--muted); }
.eyebrow { color: var(--accent-strong); text-transform: uppercase; font-weight: 900; letter-spacing: .12em; }
html[data-theme="dark"] .eyebrow { color: var(--accent); }
.button-row { display: flex; gap: .7rem; flex-wrap: wrap; align-items: center; }
.hero-panel { display: grid; gap: 1rem; }
.mini-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 18px; padding: 1rem; }
.mini-card strong { display: block; font-size: 2.2rem; }
.auth-card { max-width: 560px; margin: 3rem auto; }
.stacked-form, .filter-form { display: grid; gap: 1rem; }
label { display: grid; gap: .4rem; font-weight: 850; }
input, select, textarea { width: 100%; border: 1px solid var(--border); border-radius: 14px; padding: .85rem .95rem; background: var(--surface); color: var(--text); font: inherit; }
textarea { resize: vertical; }
.flash-stack { display: grid; gap: .7rem; margin-bottom: 1rem; }
.flash { padding: 1rem; border-radius: 16px; border: 1px solid var(--border); background: var(--surface); font-weight: 800; }
.flash.success { border-color: var(--success); } .flash.danger { border-color: var(--danger); } .flash.warning { border-color: var(--warning); }
.stat-card strong { display: block; font-size: 2.6rem; margin: .4rem 0; }
progress { width: 100%; height: .85rem; accent-color: var(--accent); }
.check-list { padding-left: 1.2rem; } .check-list li { margin-bottom: .55rem; }
.action-card { text-decoration: none; color: var(--text); transition: transform .18s ease, border-color .18s ease; }
.action-card:hover, .button:hover, .nav-actions a:hover, .theme-toggle:hover { transform: translateY(-2px); border-color: var(--accent); }
.card-list { display: grid; gap: 1rem; }
.list-card { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.planner-form { display: grid; gap: 1.2rem; }
.allocation-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; padding: 1rem; border-radius: 18px; background: var(--surface-2); border: 1px solid var(--border); }
.allocation-grid { display: grid; gap: .85rem; }
.allocation-row { display: grid; grid-template-columns: minmax(170px, .45fr) minmax(240px, 1fr); gap: .8rem; padding: .85rem; border: 1px solid var(--border); border-radius: 18px; background: color-mix(in srgb, var(--surface) 86%, transparent); }
.sticky-actions { position: sticky; bottom: 1rem; background: var(--surface); padding: .8rem; border: 1px solid var(--border); border-radius: 18px; }
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.badge { display: inline-flex; width: fit-content; border-radius: 999px; padding: .35rem .7rem; font-weight: 900; border: 1px solid var(--border); }
.badge.easy { background: #dcfce7; color: #14532d; } .badge.intermediate { background: #fef3c7; color: #78350f; } .badge.challenging { background: #fee2e2; color: #7f1d1d; }
html[data-theme="dark"] .badge.easy { background: #064e3b; color: #bbf7d0; } html[data-theme="dark"] .badge.intermediate { background: #713f12; color: #fef3c7; } html[data-theme="dark"] .badge.challenging { background: #7f1d1d; color: #fee2e2; }
.table-wrap { overflow-x: auto; } table { width: 100%; border-collapse: collapse; } th, td { border-bottom: 1px solid var(--border); padding: .8rem; text-align: left; }
.goal-progress { display: grid; grid-template-columns: 1fr minmax(160px, 280px) auto; gap: .8rem; align-items: center; margin: .75rem 0; }
.prose { max-width: 900px; } .prose h2 { margin-top: 1.7rem; }
.site-footer { width: min(1180px, calc(100% - 2rem)); margin: 2rem auto; padding: 1rem; color: var(--muted); }
.wide { grid-column: 1 / -1; }
@media (max-width: 880px) { .hero-grid, .grid-2, .grid-3 { grid-template-columns: 1fr; } .topbar, .page-header, .list-card { align-items: stretch; flex-direction: column; } .allocation-row { grid-template-columns: 1fr; } .goal-progress { grid-template-columns: 1fr; } }