/* ── Design tokens (Burger King Kingdom) ── */
:root {
  --bk-brown: #502314;
  --bk-brown-dark: #3d1a0f;
  --bk-cream: #f5ebdc;
  --bk-yellow: #ffb500;
  --bk-red: #d62300;
  --bk-taupe: #bcb2a2;
  --bk-taupe-light: #e8e0d4;
  --bk-white: #ffffff;
  --bk-text-muted: #8a7b6a;
  --bk-notice-bg: #fff5f3;
  --bk-notice-border: #f0c4bc;

  --font: 'Fredoka', system-ui, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 32px rgba(80, 35, 20, 0.12);
  --transition: 180ms ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--bk-cream);
  color: var(--bk-brown);
  min-height: 100dvh;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"] {
  -moz-appearance: textfield;
}

.icon {
  width: 1em;
  height: 1em;
  fill: currentColor;
  flex-shrink: 0;
}

.icon--crown {
  width: 1.1em;
  height: 1.1em;
}

/* ── Page layout ── */
.page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── Hero header ── */
.hero {
  background: var(--bk-brown);
  text-align: center;
  padding: 2rem 1.25rem 5rem;
  position: relative;
}

.hero__logo {
  margin-bottom: 1rem;
}

.hero__logo-img {
  display: block;
  margin: 0 auto;
  width: clamp(64px, 18vw, 88px);
  height: auto;
  filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.25));
}

.hero__domain {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

.hero__domain a {
  color: var(--bk-yellow);
  text-decoration: none;
}

.hero__domain a:hover {
  text-decoration: underline;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bk-yellow);
  color: var(--bk-brown);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.25rem;
}

.hero__title {
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1.05;
  margin-bottom: 0.5rem;
}

.hero__title-line {
  font-size: clamp(2rem, 7vw, 2.75rem);
  font-weight: 700;
  color: var(--bk-cream);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.hero__title-accent {
  font-size: clamp(2.4rem, 9vw, 3.5rem);
  font-weight: 700;
  color: var(--bk-yellow);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.hero__subtitle {
  color: var(--bk-cream);
  opacity: 0.85;
  font-size: 0.95rem;
  font-weight: 400;
}

.hero__subtitle strong {
  color: var(--bk-yellow);
  font-weight: 700;
}

/* ── SEO section ── */
.seo-section {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
  color: var(--bk-brown);
}

.seo-section h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--bk-brown);
}

.seo-section > p {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--bk-text-muted);
  margin-bottom: 1.25rem;
}

.seo-section a {
  color: var(--bk-brown);
  font-weight: 600;
}

.seo-faq h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.seo-faq details {
  background: var(--bk-white);
  border: 1px solid var(--bk-taupe-light);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  padding: 0.65rem 0.85rem;
}

.seo-faq summary {
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--bk-brown);
}

.seo-faq p {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--bk-text-muted);
}

/* ── Main card ── */
.main {
  flex: 1;
  padding: 0 1rem 2rem;
  margin-top: -3.5rem;
  position: relative;
  z-index: 1;
}

.card {
  background: var(--bk-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  max-width: 520px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem 2rem;
}

.card__title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--bk-brown);
  margin-bottom: 1.25rem;
}

/* ── Notice ── */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  background: var(--bk-notice-bg);
  border: 1px solid var(--bk-notice-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  margin-bottom: 1.25rem;
}

.notice__icon {
  width: 18px;
  height: 18px;
  color: var(--bk-red);
  flex-shrink: 0;
  margin-top: 1px;
}

.notice p {
  font-size: 0.78rem;
  color: var(--bk-red);
  line-height: 1.4;
}

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  color: var(--bk-taupe);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--bk-taupe-light);
}

.divider--compact {
  margin-top: 0.25rem;
  margin-bottom: 1rem;
}

/* ── Form ── */
.field--full {
  margin-bottom: 1rem;
}

.field__hint {
  margin: 0.4rem 0 0;
  font-size: 0.72rem;
  color: var(--bk-text-muted);
  line-height: 1.4;
}

.field__valid {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #34d399;
  color: var(--bk-white);
  pointer-events: none;
}

.field__valid svg {
  width: 12px;
  height: 12px;
}

.field__input--code {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  padding-right: 2.5rem;
}

.field__input.is-valid {
  background: #ecfdf5;
  border-color: #34d399;
  color: #065f46;
}

.field__input.is-valid:focus {
  border-color: #34d399;
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.2);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.field__label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bk-brown);
  margin-bottom: 0.4rem;
}

.field__input-wrap {
  position: relative;
}

.field__icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--bk-taupe);
  pointer-events: none;
}

.field__input {
  width: 100%;
  background: var(--bk-cream);
  border: 1.5px solid var(--bk-taupe-light);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.75rem 0.65rem 2.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--bk-brown);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field__input::placeholder {
  color: var(--bk-taupe);
  font-weight: 400;
}

.field__input:focus {
  outline: none;
  border-color: var(--bk-yellow);
  box-shadow: 0 0 0 3px rgba(255, 181, 0, 0.25);
}

.field__input:invalid:not(:placeholder-shown) {
  border-color: var(--bk-red);
}

/* ── Quick select ── */
.form__section-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bk-brown);
  margin-bottom: 0.6rem;
}

.quick-select {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.quick-select__btn {
  background: var(--bk-cream);
  border: 1.5px solid var(--bk-taupe-light);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.15rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--bk-brown);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.quick-select__btn:hover {
  background: var(--bk-yellow);
  border-color: var(--bk-yellow);
}

.quick-select__btn.is-active {
  background: var(--bk-yellow);
  border-color: var(--bk-yellow);
  transform: scale(1.04);
}

.quick-select__btn:focus-visible {
  outline: 2px solid var(--bk-brown);
  outline-offset: 2px;
}

/* ── Slider ── */
.slider-block {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--bk-taupe-light);
  border-radius: var(--radius-pill);
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  background: var(--bk-red);
  border-radius: 50%;
  border: 3px solid var(--bk-white);
  box-shadow: 0 2px 6px rgba(214, 35, 0, 0.35);
  cursor: grab;
  transition: transform var(--transition);
}

.slider::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.15);
}

.slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  background: var(--bk-red);
  border-radius: 50%;
  border: 3px solid var(--bk-white);
  box-shadow: 0 2px 6px rgba(214, 35, 0, 0.35);
  cursor: grab;
}

.slider-block__value {
  text-align: center;
  min-width: 4.5rem;
}

.slider-block__number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bk-brown);
  line-height: 1;
}

.slider-block__unit {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--bk-text-muted);
}

/* ── Preview & error ── */
.preview {
  background: var(--bk-cream);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  text-align: center;
  margin-bottom: 1rem;
}

.preview__label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bk-text-muted);
}

.preview__value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bk-brown);
}

.form__error {
  font-size: 0.8rem;
  color: var(--bk-red);
  background: var(--bk-notice-bg);
  border: 1px solid var(--bk-notice-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  margin-bottom: 1rem;
}

/* ── Submit button ── */
.submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  background: var(--bk-taupe);
  color: var(--bk-white);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.95rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
}

.submit-btn:not(:disabled):hover {
  background: var(--bk-brown);
  transform: translateY(-1px);
}

.submit-btn:not(:disabled):active {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.submit-btn.is-ready {
  background: var(--bk-red);
}

.submit-btn.is-ready:not(:disabled):hover {
  background: #b81e00;
}

.submit-btn__icon {
  width: 18px;
  height: 18px;
}

.submit-btn:focus-visible {
  outline: 2px solid var(--bk-yellow);
  outline-offset: 3px;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  font-size: 0.72rem;
  color: var(--bk-text-muted);
}

/* ── Locker overlays ── */
.locker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(80, 35, 20, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  z-index: 1000;
  animation: fadeIn 200ms ease;
}

.locker-overlay[hidden] {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.locker-modal {
  background: var(--bk-white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  max-width: 380px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  animation: slideUp 250ms ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.locker-modal__close {
  position: absolute;
  top: 0.75rem;
  right: 0.85rem;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--bk-taupe);
  padding: 0.25rem;
}

.locker-modal__close:hover {
  color: var(--bk-brown);
}

.locker-modal__crown {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.locker-modal--success .locker-modal__crown {
  width: 56px;
  height: 56px;
  background: var(--bk-yellow);
  color: var(--bk-brown);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 0.75rem;
}

.locker-modal__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bk-brown);
  margin-bottom: 0.5rem;
}

.locker-modal__text {
  font-size: 0.9rem;
  color: var(--bk-text-muted);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.locker-modal__hint {
  font-size: 0.75rem;
  color: var(--bk-taupe);
  background: var(--bk-cream);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  margin-bottom: 1rem;
}

.locker-modal__hint code {
  font-size: 0.7rem;
  background: var(--bk-taupe-light);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.locker-modal__cta {
  width: 100%;
  background: var(--bk-red);
  color: var(--bk-white);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.locker-modal__cta:hover {
  background: #b81e00;
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .form__row {
    grid-template-columns: 1fr;
  }

  .quick-select {
    grid-template-columns: repeat(4, 1fr);
  }

  .quick-select__btn:nth-child(n+5) {
    grid-column: span 1;
  }

  .hero {
    padding-bottom: 4.5rem;
  }

  .card {
    padding: 1.5rem 1.15rem 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}