:root {
  --accent: #4d6df3;
  --accent-dark: #3a59e0;
  --accent-glow: rgba(77, 109, 243, 0.35);
  --bg: #050608;
  --bg-radial: #0d1018;
  --card-bg: #14171f;
  --card-bg-2: #181c26;
  --border: #262b38;
  --border-focus: var(--accent);
  --text: #f2f4f8;
  --text-muted: #9aa3b5;
  --req: #ff6b6b;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Google Sans", Roboto, Arial, system-ui, sans-serif;
  background:
    radial-gradient(1200px 600px at 50% -10%, var(--bg-radial), transparent 70%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.page {
  max-width: 660px;
  margin: 0 auto;
  padding: 28px 14px 56px;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-glow), var(--shadow);
}

.card__body {
  padding: 26px;
}

/* Header */
.card--header {
  position: relative;
  background:
    linear-gradient(180deg, rgba(77, 109, 243, 0.10), transparent 60%),
    var(--card-bg);
}

.card__accent {
  height: 6px;
  background: linear-gradient(90deg, var(--accent), #7d93ff 60%, var(--accent));
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.brand__logo {
  width: 44px;
  height: 44px;
  filter: drop-shadow(0 0 10px var(--accent-glow));
}

.brand__name {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--text);
}

.brand__name--accent {
  color: var(--accent);
}

.card--header h1 {
  margin: 0 0 10px;
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.3px;
}

.subtitle {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 1rem;
}

.required-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Questions */
.question {
  display: block;
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 18px;
  color: var(--text);
}

.hint {
  display: block;
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

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

/* Text inputs */
input[type="text"],
input[type="tel"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: var(--card-bg-2);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

input::placeholder,
textarea::placeholder {
  color: #5d667a;
}

textarea {
  resize: vertical;
}

input[type="text"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: #1b2030;
}

/* Brighten native date/time picker icons on dark bg */
input[type="date"],
input[type="time"] {
  color-scheme: dark;
}

/* Date + time row */
.datetime-row {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 150px;
  flex: 1;
}

.field__label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* AC brand + quantity rows */
.brand-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-row .brand-name {
  flex: 1;
}

.brand-row .brand-qty {
  width: 84px;
  flex: 0 0 auto;
  text-align: center;
}

.brand-remove {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--card-bg-2);
  color: var(--text-muted);
  border-radius: 10px;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.brand-remove:hover {
  color: var(--req);
  border-color: var(--req);
  background: rgba(255, 107, 107, 0.08);
}

.btn--add {
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--border);
  padding: 10px 18px;
  border-radius: 10px;
}

.btn--add:hover {
  border-color: var(--accent);
  background: rgba(77, 109, 243, 0.08);
}

.brand-preview {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 16px;
}

.brand-preview code {
  font-family: "SF Mono", "Fira Code", ui-monospace, monospace;
  font-size: 0.9rem;
  color: var(--accent);
  background: var(--card-bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  word-break: break-all;
}

/* Radio options */
.options {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  cursor: pointer;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg-2);
  transition: border-color 0.15s, background 0.15s;
}

.option:hover {
  border-color: #38415a;
  background: #1b2030;
}

.option:has(input:checked) {
  border-color: var(--accent);
  background: rgba(77, 109, 243, 0.12);
  box-shadow: 0 0 0 1px var(--accent-glow);
}

.option input[type="radio"] {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Actions */
.actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 13px 30px;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, box-shadow 0.15s, transform 0.05s;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 18px var(--accent-glow);
}

.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  color: var(--text);
  border-color: #38415a;
}

/* Status message */
.status {
  margin-top: 18px;
  font-size: 0.95rem;
  min-height: 1.2em;
}

.status--success {
  color: #4ade80;
}

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

.page__footer {
  margin-top: 28px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

@media (max-width: 480px) {
  .card__body {
    padding: 20px;
  }
  .card--header h1 {
    font-size: 1.6rem;
  }
}