:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --ink: #1f2933;
    --muted: #6b7280;
    --line: #e2e8f0;
    --accent: #2563eb;
    --accent-ink: #ffffff;
    --ok: #059669;
    --err: #dc2626;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
}

.wrap { max-width: 820px; margin: 0 auto; padding: 32px 20px 64px; }
.wrap.wide { max-width: 1080px; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 28px 30px;
}

h1 { font-size: 1.5rem; margin: 0 0 6px; }
h2 { font-size: 1.15rem; margin: 32px 0 12px; }
.lead { color: var(--muted); margin: 0 0 8px; }

.q {
    padding: 18px 0;
    border-top: 1px solid var(--line);
}
.q:first-of-type { border-top: none; }
.q-text { font-weight: 600; margin: 0 0 12px; }
.q-num { color: var(--accent); margin-inline-end: 6px; }

.scale {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}
.scale label {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
    padding: 12px 6px;
    border: 1px solid var(--line);
    border-radius: 10px;
    cursor: pointer;
    font-size: .82rem;
    color: var(--muted);
    transition: border-color .12s, background .12s, color .12s;
}
.scale label:hover { border-color: var(--accent); }
.scale input { accent-color: var(--accent); width: 18px; height: 18px; }
.scale input:checked + .lbl { color: var(--ink); font-weight: 600; }
.scale label:has(input:checked) { border-color: var(--accent); background: #eff5ff; }
.scale .num { font-size: 1.1rem; font-weight: 700; color: var(--ink); }

textarea {
    width: 100%;
    min-height: 120px;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 12px 14px;
    font: inherit;
    resize: vertical;
}
textarea:focus, .scale label:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }

.btn {
    display: inline-block;
    background: var(--accent);
    color: var(--accent-ink);
    border: none;
    border-radius: 10px;
    padding: 13px 26px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 24px;
}
.btn:hover { filter: brightness(1.05); }

.note { font-size: .9rem; color: var(--muted); }
.error { color: var(--err); font-weight: 600; }
.badge-err { background: #fef2f2; border: 1px solid #fecaca; color: var(--err); padding: 3px 8px; border-radius: 6px; font-size: .85rem; }

.state {
    text-align: center;
    padding: 40px 20px;
}
.state .icon { font-size: 3rem; line-height: 1; }
.state h1 { margin-top: 14px; }

/* --- Πίνακες / αποτελέσματα --- */
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { padding: 9px 12px; text-align: start; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #f8fafc; font-weight: 600; }
td.num, th.num { text-align: end; font-variant-numeric: tabular-nums; }

.metrics { display: flex; flex-wrap: wrap; gap: 14px; margin: 6px 0 10px; }
.metric { flex: 1 1 150px; background: #f8fafc; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.metric .v { font-size: 1.8rem; font-weight: 700; }
.metric .k { color: var(--muted); font-size: .85rem; }

.bar { background: var(--line); border-radius: 6px; height: 10px; overflow: hidden; min-width: 80px; }
.bar > span { display: block; height: 100%; background: var(--accent); }

.dist { display: flex; align-items: center; gap: 10px; }
.dist .seg { height: 20px; }
.s1 { background:#dc2626; } .s2 { background:#f97316; } .s3 { background:#eab308; }
.s4 { background:#84cc16; } .s5 { background:#059669; }

.legend { display:flex; flex-wrap:wrap; gap:12px; font-size:.82rem; color:var(--muted); margin: 4px 0 16px; }
.legend span { display:inline-flex; align-items:center; gap:6px; }
.legend i { width:12px; height:12px; border-radius:3px; display:inline-block; }

.comment { background:#f8fafc; border:1px solid var(--line); border-inline-start:3px solid var(--accent); border-radius:8px; padding:10px 14px; margin:10px 0; white-space:pre-wrap; }

.tabs { display:flex; gap:8px; margin: 0 0 20px; }
.tabs a { padding:8px 16px; border-radius:8px; text-decoration:none; color:var(--muted); border:1px solid var(--line); background:var(--card); }
.tabs a.active { background:var(--accent); color:#fff; border-color:var(--accent); }

@media (max-width: 560px) {
    .scale { grid-template-columns: repeat(5, 1fr); gap: 4px; }
    .scale label { padding: 10px 2px; font-size: .68rem; }
}