:root {
  --bg-top: #1a0f2e;
  --bg-mid: #34163f;
  --bg-bottom: #170a26;
  --surface: rgba(47, 30, 74, 0.55);
  --surface-alt: rgba(63, 40, 94, 0.6);
  --surface-border: rgba(179, 136, 255, 0.22);
  --text: #f5f1ff;
  --muted: #cabbe8;
  --accent: #c9a3ff;
  --accent-strong: #8c52ff;
  --accent-hot: #ff5fa2;
  --accent-warm: #ff9a5c;
  --warn-bg: rgba(58, 33, 48, 0.85);
  --warn-border: #ff6b6b;
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 8%, rgba(255, 154, 92, 0.16), transparent 40%),
    radial-gradient(circle at 88% 20%, rgba(255, 95, 162, 0.2), transparent 45%),
    radial-gradient(circle at 50% 95%, rgba(140, 82, 255, 0.28), transparent 55%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 40%, #341a44 65%, var(--bg-bottom) 100%);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.5;
}

.section {
  padding: 38px 16px;
  max-width: 480px;
  margin: 0 auto;
}

button {
  font-family: inherit;
  cursor: pointer;
}

h1, h2, h3 {
  line-height: 1.2;
}

#hero h1,
.section > h2 {
  background: linear-gradient(90deg, #ffd6e6 0%, var(--accent) 45%, var(--accent-warm) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* === HERO === */

#hero {
  position: relative;
  text-align: center;
  padding-top: 64px;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  inset: -20px -20px auto -20px;
  height: 220px;
  pointer-events: none;
  background-image:
    radial-gradient(2px 2px at 10% 20%, #fff, transparent),
    radial-gradient(2px 2px at 30% 60%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 50% 15%, #ffd6e6, transparent),
    radial-gradient(2px 2px at 70% 45%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 88% 30%, #ffd6e6, transparent),
    radial-gradient(1.5px 1.5px at 95% 65%, #fff, transparent);
  opacity: 0.55;
}

.site-logo-link {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 100;
  display: block;
  width: 216px;
  height: 216px;
  border-radius: 50%;
  transition: transform 0.15s ease;
}

.site-logo-link:hover {
  transform: scale(1.05);
}

.site-logo {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--accent), 0 0 24px rgba(255, 45, 111, 0.35);
}

@media (max-width: 480px) {
  .site-logo-link {
    position: static;
    display: block;
    width: 132px;
    height: 132px;
    margin: 16px auto 0;
  }
}

#hero h1 {
  position: relative;
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.hero-subtitle {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2px;
}

#hero p {
  position: relative;
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
}

.hero-teaser {
  margin: 8px 0 28px;
}

.hero-teaser-stage {
  position: relative;
  height: 170px;
  overflow: hidden;
}

.hero-teaser-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  min-height: 110px;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  text-align: left;
  cursor: pointer;
}

.hero-teaser-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.tag-icon {
  display: inline-flex;
  flex: none;
  width: 14px;
  height: 14px;
  margin-right: 4px;
}

.tag-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-teaser-card p {
  margin: 8px 0 0;
  font-size: 0.85rem;
  line-height: 1.35;
  color: var(--text);
}

.hero-teaser-card.is-active {
  box-shadow: 0 0 24px rgba(255, 95, 162, 0.2);
}

.hero-teaser-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}

.hero-teaser-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--surface-border);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.hero-teaser-dot.is-active {
  background: var(--accent-hot);
  transform: scale(1.3);
}

.hero-cta {
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-hot));
  color: var(--text);
  border: none;
  border-radius: var(--radius);
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 0 28px rgba(255, 95, 162, 0.35), 0 6px 16px rgba(140, 82, 255, 0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.hero-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 36px rgba(255, 95, 162, 0.45), 0 8px 20px rgba(140, 82, 255, 0.35);
}

/* === HOW IT WORKS === */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.step-number {
  color: var(--accent);
  font-weight: 700;
  margin-right: 8px;
}

/* === DISCLAIMER === */

#disclaimer .disclaimer-box {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 0.95rem;
  color: var(--text);
}

/* === CURSE SELECTOR === */

.curse-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.curse-tab {
  display: inline-flex;
  align-items: center;
  flex: none;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.9rem;
}

.curse-tab--active {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-hot));
  border-color: transparent;
  color: var(--text);
}

.curse-grid-wrap {
  position: relative;
  transition: height 0.2s ease;
}

.curse-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
}

.curse-grid--active {
  position: relative;
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
}

.curse-card {
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 14px;
  font-size: 0.95rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.curse-card--selected {
  border-color: var(--accent-hot);
  background: var(--surface-alt);
  box-shadow: 0 0 20px rgba(255, 95, 162, 0.25);
}

/* === PERSONALIZATION === */

#personalization-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#personalization-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

#personalization-form label[hidden] {
  display: none;
}

.delivery-extra {
  position: relative;
}

.delivery-extra-field {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  margin: 0;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.delivery-extra-field.is-active {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

#personalization-form input,
#personalization-form textarea,
#personalization-form select {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}

#personalization-form input.field-invalid,
#personalization-form select.field-invalid {
  border-color: var(--warn-border);
}

.visually-hidden-select {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.custom-select {
  position: relative;
}

.custom-select-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  text-align: left;
}

.custom-select-label.is-placeholder {
  color: var(--muted);
}

.custom-select-chevron {
  display: inline-flex;
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--muted);
  transition: transform 0.15s ease;
}

.custom-select-chevron svg {
  display: block;
  width: 100%;
  height: 100%;
}

.custom-select.is-open .custom-select-chevron {
  transform: rotate(180deg);
}

.custom-select.is-open .custom-select-trigger {
  border-color: var(--accent);
}

.visually-hidden-select.field-invalid + .custom-select .custom-select-trigger {
  border-color: var(--warn-border);
}

.custom-select-list {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 20;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--surface-alt);
  border: 1px solid var(--surface-border);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
  max-height: 240px;
  overflow-y: auto;
}

.custom-select-option {
  padding: 10px 10px;
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  cursor: pointer;
}

.custom-select-option:hover {
  background: rgba(255, 255, 255, 0.06);
}

.custom-select-option.is-selected {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-hot));
  color: var(--text);
}

#personalization-form .field-error {
  color: var(--warn-border);
  font-size: 0.8rem;
}

/* === TARIFFS === */

.payment-info {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 16px;
}

#tariffs {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tariff-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.tariff-card--featured {
  border-color: var(--accent-hot);
  box-shadow: 0 0 28px rgba(255, 95, 162, 0.35);
}

.tariff-badge-pill {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-hot));
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  box-shadow: 0 0 16px rgba(255, 95, 162, 0.45);
  white-space: nowrap;
}

.tariff-card h3 {
  margin: 0 0 4px;
}

.tariff-price {
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 12px;
}

.tariff-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  text-align: left;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tariff-card li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.feature-check {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  border: 1.6px solid var(--accent-hot);
  color: var(--accent-hot);
}

.feature-check svg {
  width: 10px;
  height: 10px;
}

.tariff-pay-button {
  width: 100%;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-hot));
  color: var(--text);
  border: none;
  border-radius: var(--radius);
  padding: 12px;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 0 20px rgba(255, 95, 162, 0.28);
}

.tariff-pay-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
}

.tariff-unavailable-note {
  color: var(--warn-border);
  font-size: 0.8rem;
  margin: -8px 0 12px;
}

.tariff-card--unavailable {
  opacity: 0.55;
}

/* === WHAT NEXT === */

.summary-preview {
  white-space: pre-wrap;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 16px;
  min-height: 24px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.copy-summary-button {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent-hot));
  color: var(--text);
  border: none;
  border-radius: var(--radius);
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 12px;
  box-shadow: 0 0 28px rgba(255, 95, 162, 0.35), 0 6px 16px rgba(140, 82, 255, 0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.copy-summary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 36px rgba(255, 95, 162, 0.45), 0 8px 20px rgba(140, 82, 255, 0.35);
}

/* === FAQ === */

.faq-item {
  border-bottom: 1px solid var(--surface-border);
  padding: 12px 0;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
}

.faq-answer {
  color: var(--muted);
  margin: 8px 0 0;
  font-size: 0.9rem;
}

/* === FOOTER === */

#footer {
  text-align: center;
  padding: 32px 20px 48px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

#footer a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s ease;
}

#footer a:hover {
  color: var(--accent);
}

.social-icon {
  display: inline-flex;
  width: 16px;
  height: 16px;
}

.social-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* === DESKTOP (≥768px) === */

@media (min-width: 768px) {
  .section {
    max-width: 1024px;
    padding: 51px 26px;
  }

  #hero {
    padding-top: 96px;
  }

  #hero h1 {
    font-size: 3.8rem;
  }

  .hero-subtitle {
    font-size: 1.4rem;
  }

  #hero p {
    font-size: 1.2rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    padding: 16px 36px;
    font-size: 1.05rem;
  }

  .hero-teaser-stage {
    height: 190px;
  }

  .hero-teaser-card {
    width: 230px;
  }

  .steps {
    flex-direction: row;
  }

  .step {
    flex: 1;
  }

  .curse-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  #tariffs {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: stretch;
  }

  .payment-info {
    flex-basis: 100%;
    margin-bottom: 8px;
  }

  .tariff-card {
    flex: 1 1 200px;
    display: flex;
    flex-direction: column;
  }

  .tariff-card ul {
    flex: 1;
  }
}