/* ============================================================
   Questionario Accoglienza - minimal custom CSS
   Palette: Comet red (#c8102e) on white, neutral grays
   ============================================================ */

:root {
    --comet-red:      #c8102e;
    --comet-red-dark: #9c0c24;
    --text:           #1f2328;
    --muted:          #6b7178;
    --border:         #d8dde3;
    --bg:             #f6f7f9;
    --bg-card:        #ffffff;
    --ok:             #1a7f37;
    --error:          #d4221f;
    --warn-bg:        #fff8e1;
    --warn-bd:        #f0c040;
    --radius:         6px;
    --shadow:         0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.5;
    font-size: 16px;
}

a { color: var(--comet-red); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Layout ---------- */

.app-header {
    background: var(--comet-red);
    color: #fff;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow);
}
.app-header h1 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: .2px;
}
.app-header .header-meta {
    font-size: .85rem;
    opacity: .9;
    margin-top: .15rem;
}

.app-main {
    max-width: 720px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

/* ---------- Forms ---------- */

label {
    display: block;
    font-weight: 600;
    margin: 1.1rem 0 .4rem;
    color: var(--text);
}
label .req { color: var(--comet-red); margin-left: .15rem; }

input[type=text], input[type=password], input[type=number], textarea, select {
    width: 100%;
    padding: .55rem .7rem;
    font: inherit;
    color: var(--text);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--comet-red);
    box-shadow: 0 0 0 3px rgba(200,16,46,.15);
}

textarea { min-height: 90px; resize: vertical; }

/* ---------- Button ---------- */

.btn {
    display: inline-block;
    padding: .65rem 1.25rem;
    font: inherit;
    font-weight: 600;
    color: #fff;
    background: var(--comet-red);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background .15s;
}
.btn:hover { background: var(--comet-red-dark); }
.btn:disabled { background: #c0c4ca; cursor: not-allowed; }

.btn-secondary {
    background: #fff;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg); }

/* ---------- Messages ---------- */

.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    border: 1px solid transparent;
}
.alert-error {
    color: #8a1c1a;
    background: #fdecea;
    border-color: #f6c8c4;
}
.alert-success {
    color: #0f5223;
    background: #e6f4ea;
    border-color: #b7dcc1;
}
.alert-warn {
    color: #6a4f00;
    background: var(--warn-bg);
    border-color: var(--warn-bd);
}

.muted { color: var(--muted); font-size: .9rem; }
.small { font-size: .85rem; }

/* ---------- Login page ---------- */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: var(--bg);
}
.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.75rem;
}
.login-card h1 {
    color: var(--comet-red);
    font-size: 1.3rem;
    margin: 0 0 .25rem;
}
.login-card .subtitle {
    color: var(--muted);
    font-size: .9rem;
    margin-bottom: 1.25rem;
}
.login-card .btn { width: 100%; margin-top: 1.25rem; }

/* ---------- Mobile tweaks ---------- */

@media (max-width: 540px) {
    .app-main { margin: 1rem auto; padding: 0 .75rem; }
    .card { padding: 1rem; }
    .login-card { padding: 1.25rem; }
}
/* ============================================================
   Form-specific widgets: stars, NPS, radio groups, conditional
   ============================================================ */

.question {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}
.question:last-child { border-bottom: none; }

.question .q-label {
    display: block;
    font-weight: 600;
    margin-bottom: .6rem;
    color: var(--text);
}
.question .q-label .req { color: var(--comet-red); margin-left: .15rem; }

.question.hidden { display: none; }

/* ---------- Stars (Q3: 0-5) ---------- */

.stars {
    display: inline-flex;
    flex-direction: row-reverse;     /* trick: reverse so CSS :hover propagates left */
    gap: .15rem;
}
.stars input[type=radio] {
    display: none;
}
.stars label.star {
    cursor: pointer;
    font-size: 2rem;
    line-height: 1;
    color: #d8dde3;
    user-select: none;
    transition: color .1s;
    margin: 0;
    padding: 0 .15rem;
    font-weight: normal;
}
.stars label.star:hover,
.stars label.star:hover ~ label.star,
.stars input[type=radio]:checked ~ label.star {
    color: #f5b301;
}
.stars .zero-star {
    margin-left: .5rem;
    font-size: .9rem;
    color: var(--muted);
}

/* ---------- NPS (Q4: 0-10) ---------- */

.nps {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
    margin-top: .25rem;
}
.nps input[type=radio] {
    display: none;
}
.nps label.nps-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    background: #fff;
    margin: 0;
    transition: all .1s;
}
.nps label.nps-btn:hover {
    border-color: var(--comet-red);
    background: #fff5f5;
}
.nps input[type=radio]:checked + label.nps-btn {
    background: var(--comet-red);
    color: #fff;
    border-color: var(--comet-red);
}
.nps-legend {
    display: flex;
    justify-content: space-between;
    font-size: .8rem;
    color: var(--muted);
    margin-top: .35rem;
}

/* ---------- Radio groups (vertical list) ---------- */

.radio-group {
    display: flex;
    flex-direction: column;
    gap: .3rem;
    margin-top: .25rem;
}
.radio-group label {
    display: flex;
    align-items: flex-start;
    gap: .5rem;
    margin: 0;
    padding: .45rem .65rem;
    font-weight: 400;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background .1s, border-color .1s;
}
.radio-group label:hover {
    background: var(--bg);
}
.radio-group input[type=radio]:checked + span {
    font-weight: 600;
    color: var(--comet-red);
}
.radio-group input[type=radio] {
    margin-top: .25rem;
    accent-color: var(--comet-red);
}

/* ---------- Submit row ---------- */

.submit-row {
    margin-top: 1.5rem;
    display: flex;
    gap: .75rem;
}