/* ==========================================================================
   Kaney Survey Form - styles
   Sections: 1. Variables  2. Base  3. Layout  4. Form controls
             5. Options  6. Star rating  7. Buttons  8. Responsive & a11y
   ========================================================================== */

/* 1. Variables ------------------------------------------------------------ */
:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1b2033;
  --muted: #5d6580;
  --border: #d9deec;
  --primary: #4f46e5;
  --primary-dark: #3d35c4;
  --ring: rgba(79, 70, 229, .22);
  --error: #d93a4a;
  --star: #f5b301;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1220;
    --card: #171c30;
    --text: #eef0f8;
    --muted: #a3abc7;
    --border: #2b3252;
    --primary: #7c78ff;
    --primary-dark: #9b98ff;
    --ring: rgba(124, 120, 255, .3);
  }
}

/* 2. Base ----------------------------------------------------------------- */
* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 32px 16px 56px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(circle at top, rgba(79, 70, 229, .12), transparent 50%), var(--bg);
  color: var(--text);
  line-height: 1.55;
}

/* 3. Layout --------------------------------------------------------------- */
.container { max-width: 720px; margin: 0 auto; }

header { text-align: center; margin-bottom: 28px; }

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  letter-spacing: -.02em;
}

#description { margin: 0 auto; max-width: 52ch; color: var(--muted); }

form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(18px, 4vw, 32px);
  box-shadow: 0 10px 30px rgba(20, 25, 60, .08);
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 18px 6px;
  margin: 0 0 22px;
  min-width: 0;
}

legend { padding: 0 8px; font-weight: 700; }

footer { text-align: center; color: var(--muted); font-size: .85rem; margin-top: 24px; }

.privacy { font-size: .85rem; color: var(--muted); margin: 0 0 16px; }

/* Honeypot field that blocks bots (hidden from real users) */
.botcheck { display: none; }

/* 4. Form controls -------------------------------------------------------- */
.field { margin-bottom: 16px; }

label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }

.req { color: var(--error); }

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: transparent;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  transition: border-color .2s, box-shadow .2s;
}

select option { color: #1b2033; }

input:focus,
select:focus,
textarea:focus,
button:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--ring);
}

input:user-invalid,
textarea:user-invalid { border-color: var(--error); }

textarea { resize: vertical; min-height: 130px; }

.hint { font-size: .82rem; color: var(--muted); margin-top: 4px; }

/* 5. Radio & checkbox option tiles ---------------------------------------- */
.options { display: grid; gap: 10px; }
.options.two { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.option {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-weight: 500;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}

.option:hover { border-color: var(--primary); }
.option:has(input:checked) { border-color: var(--primary); background: var(--ring); }

.option input {
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
  margin: 0;
  flex-shrink: 0;
}

/* 6. CSS-only star rating ------------------------------------------------- */
.rating { display: flex; flex-direction: row-reverse; justify-content: flex-end; gap: 4px; }

.rating input { position: absolute; opacity: 0; }

.rating label {
  font-size: 2rem;
  color: var(--border);
  cursor: pointer;
  margin: 0;
  line-height: 1;
  transition: color .15s;
}

.rating input:checked ~ label,
.rating label:hover,
.rating label:hover ~ label { color: var(--star); }

.rating input:focus-visible + label { outline: 2px solid var(--primary); border-radius: 4px; }

/* 7. Buttons -------------------------------------------------------------- */
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }

button {
  font: inherit;
  font-weight: 700;
  padding: 13px 22px;
  border-radius: 10px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: transform .1s, background .2s;
}

button:active { transform: scale(.98); }

#submit { flex: 1 1 200px; background: var(--primary); color: #fff; }
#submit:hover { background: var(--primary-dark); }

#reset { background: transparent; color: var(--muted); border-color: var(--border); }

/* 8. Responsive & accessibility ------------------------------------------- */
@media (max-width: 480px) {
  fieldset { padding: 14px 12px 4px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}