:root { --bg: #0b1020; --card: #121732; --ink: #e6e8ef; --muted: #a8b0c3; --accent: #6ea8fe; --accent-2: #7ef0d4; --danger: #ff6b6b; --border: #263159; }
* { box-sizing: border-box; }
body { font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; margin: 0; padding: 0; background: radial-gradient(1200px 600px at 70% -10%, #1a2350 0%, transparent 60%), var(--bg); color: var(--ink); }
.shell { min-height: 100vh; display: flex; flex-direction: column; }
.app-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; border-bottom: 1px solid var(--border); background: rgba(0,0,0,0.2); position: sticky; top: 0; backdrop-filter: blur(8px); }
.brand { font-weight: 700; letter-spacing: 0.3px; }
.nav a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.nav a:hover { color: var(--ink); }
.container { width: 100%; max-width: 1000px; margin: 24px auto; padding: 0 16px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01)); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin: 16px 0; box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.card-head { display: flex; align-items: baseline; justify-content: space-between; }
.legend { color: var(--muted); font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.field span { display: block; margin-bottom: 6px; font-size: 14px; color: var(--muted); }
.field input, .field select { width: 100%; background: #0f1430; border: 1px solid var(--border); color: var(--ink); border-radius: 8px; padding: 10px 12px; outline: none; }
.field input:focus, .field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(110,168,254,0.2); }
.hint { color: var(--muted); font-size: 12px; }
.actions { margin-top: 12px; display: flex; gap: 12px; }
.actions.split { justify-content: space-between; }
.btn { appearance: none; border: 1px solid var(--border); color: var(--ink); background: #0f1430; padding: 10px 14px; border-radius: 10px; cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn-primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #0b1020; border: none; font-weight: 600; }

.progress { position: relative; height: 8px; background: #0f1430; border: 1px solid var(--border); border-radius: 999px; margin: 8px 0 20px; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 999px; transition: width .3s ease; }
.progress-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 8px; color: var(--muted); font-size: 12px; }
.step { text-align: center; }

.question-list .category { border: 1px solid var(--border); background: #0f1430; padding: 16px; margin: 16px 0; border-radius: 10px; }
.question { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px dashed var(--border); }
.question:last-child { border-bottom: none; }
.segmented { display: inline-grid; grid-auto-flow: column; gap: 6px; background: #0b1020; border: 1px solid var(--border); padding: 6px; border-radius: 999px; }
.segmented input { display: none; }
.segmented label { cursor: pointer; padding: 6px 10px; border-radius: 999px; color: var(--muted); border: 1px solid transparent; }
.segmented input:checked + label { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #0b1020; font-weight: 600; }

.hidden { display: none; }
table.results { width: 100%; border-collapse: collapse; margin-top: 12px; }
table.results th, table.results td { border: 1px solid var(--border); padding: 8px 10px; }
.history-item { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--border); }

.toast { position: fixed; bottom: 24px; right: 24px; background: #0f1430; color: var(--ink); border: 1px solid var(--border); padding: 12px 14px; border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); }