:root {
  --bg: #0f1419;
  --bg-card: #1a2332;
  --bg-soft: #243044;
  --text: #e8eef4;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #a78bfa;
  --warn: #fb923c;
  --ok: #4ade80;
  --radius: 16px;
  --font: "Inter", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
}

.container {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.logo span {
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0f1419;
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.35);
}

.btn--primary:hover {
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Hero */
.hero {
  padding: 48px 0 64px;
  background:
    radial-gradient(ellipse 80% 60% at 70% 0%, rgba(56, 189, 248, 0.12), transparent),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(167, 139, 250, 0.08), transparent);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero__badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(251, 146, 60, 0.15);
  color: var(--warn);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 24px;
  max-width: 480px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.stat-pill {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 0.85rem;
}

.stat-pill strong {
  display: block;
  color: var(--accent);
  font-size: 1rem;
}

.hero__visual {
  position: relative;
  text-align: center;
}

.hero__visual img {
  margin: 0 auto;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.5));
  max-height: 380px;
  width: auto;
}

.hero__price-tag {
  position: absolute;
  bottom: 12%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--ok);
  padding: 12px 18px;
  border-radius: 12px;
  text-align: left;
}

.hero__price-tag .old {
  text-decoration: line-through;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero__price-tag .new {
  color: var(--ok);
  font-weight: 800;
  font-size: 1.25rem;
}

/* Form card */
.form-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.form-card h2 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.form-card__sub {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 20px;
}

.timer {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.timer__box {
  flex: 1;
  background: var(--bg-soft);
  border-radius: 10px;
  padding: 10px;
  text-align: center;
}

.timer__box span {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.timer__box small {
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.form-card label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.form-card input {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.form-card input:focus {
  outline: none;
  border-color: var(--accent);
}

.form-card .btn {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
}

.form-card__note {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 12px;
  text-align: center;
}

.form-card__stock {
  text-align: center;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.form-card__stock strong {
  color: var(--warn);
  font-size: 1.5rem;
}

/* Sections */
.section {
  padding: 64px 0;
}

.section--alt {
  background: var(--bg-card);
}

.section__head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.section__head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 12px;
  font-weight: 800;
}

.section__head p {
  color: var(--muted);
  margin: 0;
}

/* Features list */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.features li {
  background: var(--bg-soft);
  padding: 20px;
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}

/* Symptoms grid */
.symptoms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.symptom {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.symptom img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin: 0 auto 12px;
}

.symptom p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.alert-banner {
  margin-top: 32px;
  padding: 20px 24px;
  background: rgba(251, 146, 60, 0.1);
  border: 1px solid rgba(251, 146, 60, 0.3);
  border-radius: var(--radius);
  text-align: center;
}

.alert-banner strong {
  color: var(--warn);
}

/* BMI */
.bmi-box {
  max-width: 560px;
  margin: 0 auto;
  background: var(--bg);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.bmi-box__inputs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.bmi-box input {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--bg-card);
  color: var(--text);
  width: 100%;
}

.bmi-result {
  min-height: 60px;
  padding: 16px;
  background: var(--bg-soft);
  border-radius: 10px;
  text-align: center;
  font-weight: 600;
}

/* Risks */
.risks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.risk-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.risk-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.risk-card__body {
  padding: 20px;
}

.risk-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--accent);
}

.risk-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.stat-block {
  padding: 28px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-block h3 {
  color: var(--warn);
  margin: 0 0 8px;
}

/* Certs */
.certs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  text-align: center;
}

.certs img {
  margin: 0 auto 12px;
  max-height: 160px;
  object-fit: contain;
}

.certs span {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Two col */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.split__img {
  border-radius: var(--radius);
  overflow: hidden;
}

.prose p {
  color: var(--muted);
  margin: 0 0 16px;
}

.prose b {
  color: var(--text);
}

.highlight-box {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(167, 139, 250, 0.1));
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 24px;
}

/* Expert */
.expert {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
  background: var(--bg);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.expert__meta {
  text-align: right;
}

.expert__meta img {
  margin-left: auto;
  opacity: 0.9;
}

.expert__name {
  font-weight: 700;
  color: var(--accent);
  margin-top: 12px;
}

/* Reviews */
.reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.review {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.review__photo img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.review__text {
  padding: 20px;
  font-size: 0.95rem;
}

.review__author {
  padding: 0 20px 16px;
  font-size: 0.8rem;
  color: var(--accent);
}

/* Composition */
.ingredients {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.ingredient {
  padding: 20px;
  background: var(--bg-soft);
  border-radius: var(--radius);
}

.ingredient h4 {
  margin: 0 0 8px;
  color: var(--accent);
}

.ingredient p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Contest */
.contest {
  padding: 56px 0;
  background: #0a0e12;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.contest h2 {
  text-align: center;
  margin: 0 0 32px;
  font-size: 1.75rem;
}

.contest__grid {
  display: grid;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}

.contest__item {
  background: var(--bg-card);
  padding: 18px 22px;
  border-radius: 12px;
  border-left: 3px solid var(--accent-2);
}

.contest__item h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--accent);
}

.contest__item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Footer */
.site-footer {
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-footer a {
  margin: 0 12px;
}

/* CTA section */
.cta-section {
  padding: 64px 0;
  background: linear-gradient(180deg, var(--bg-card), var(--bg));
}

.cta-section .form-card {
  max-width: 420px;
  margin: 0 auto;
}

/* Responsive */
@media (max-width: 900px) {
  .hero__grid,
  .split,
  .expert {
    grid-template-columns: 1fr;
  }

  .features,
  .symptoms-grid,
  .risks,
  .reviews,
  .ingredients,
  .certs,
  .stats-row {
    grid-template-columns: 1fr;
  }

  .symptoms-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__visual {
    order: -1;
  }

  .expert__meta {
    text-align: left;
  }

  .expert__meta img {
    margin: 0;
  }
}

@media (max-width: 480px) {
  .bmi-box__inputs {
    grid-template-columns: 1fr;
  }

  .symptoms-grid {
    grid-template-columns: 1fr;
  }
}