:root {
  --bg: #0b0f1a;
  --bg-alt: #111826;
  --surface: #1a2030;
  --surface-2: #232a3d;
  --border: #2a3245;
  --text: #e8ecf4;
  --text-muted: #8a93a8;
  --primary: #ff7a1a;
  --primary-2: #ffa05a;
  --primary-soft: rgba(255, 122, 26, 0.12);
  --accent: #18d178;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ Header ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.02em;
}
.logo__mark {
  min-width: 42px;
  height: 36px;
  padding: 0 8px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.02em;
  box-shadow: 0 6px 18px rgba(255, 122, 26, 0.4);
}
.logo__text { color: var(--text); }
.logo--light .logo__text { color: #fff; }

.nav {
  display: flex;
  gap: 28px;
  font-size: 15px;
  color: var(--text-muted);
}
.nav a:hover { color: var(--text); }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
  font-family: inherit;
}
.btn--primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(255, 122, 26, 0.35);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(255, 122, 26, 0.5);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover { border-color: var(--text-muted); }
.btn--sm { padding: 10px 18px; font-size: 14px; }
.btn--block { width: 100%; padding: 16px 24px; font-size: 16px; }

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 122, 26, 0.18) 0%, transparent 60%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(24, 209, 120, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero__content h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.05;
  margin: 16px 0 20px;
  font-weight: 800;
  letter-spacing: -0.025em;
}
.accent {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 0 32px;
}
.badge {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary-2);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.hero__actions {
  display: flex;
  gap: 14px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero__stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}
.stat__num {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
}
.stat__lbl {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Hero fuel card */
.hero__visual {
  display: flex;
  justify-content: center;
}
.fuel-card {
  width: 100%;
  max-width: 380px;
  background: linear-gradient(160deg, var(--surface) 0%, var(--bg-alt) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  position: relative;
}
.fuel-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}
.fuel-card__brand {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.fuel-card__live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}
.dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(24, 209, 120, 0.2);
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.fuel-card__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 28px;
}
.fuel-card__currency { color: var(--text-muted); font-size: 14px; }
.fuel-card__amount {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.fuel-card__unit { color: var(--text-muted); font-size: 14px; }
.fuel-card__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  margin-bottom: 20px;
}
.fuel-card__label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.fuel-card__value {
  font-size: 15px;
  font-weight: 600;
}
.fuel-card__bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  overflow: hidden;
}
.fuel-card__bar-fill {
  height: 100%;
  width: 72%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-2) 100%);
  border-radius: 999px;
}

/* ============ Sections ============ */
.section {
  padding: 90px 0;
}
.section--alt {
  background: var(--bg-alt);
}
.section__head {
  text-align: center;
  margin-bottom: 48px;
}
.eyebrow {
  display: inline-block;
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}

/* ============ Cards ============ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s, border-color 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}
.card__icon {
  width: 52px;
  height: 52px;
  background: var(--primary-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
}
.card h3 {
  font-size: 18px;
  margin: 0 0 8px;
}
.card p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0;
}

/* ============ Prices ============ */
.prices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.prices__loading {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-muted);
  padding: 40px 0;
}
.price-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.2s;
}
.price-card:hover { transform: translateY(-4px); }
.price-card--featured {
  background: linear-gradient(160deg, rgba(255, 122, 26, 0.12) 0%, var(--surface) 60%);
  border-color: var(--primary);
}
.price-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.price-card__name {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.price-card__value {
  font-size: 30px;
  font-weight: 800;
  margin: 8px 0 4px;
  letter-spacing: -0.02em;
}
.price-card__value span {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}
.price-card__desc {
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ Order ============ */
.order {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow);
}
.order__info h2 { margin: 12px 0 16px; }
.order__info p {
  color: var(--text-muted);
  margin: 0 0 24px;
}
.order__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.order__list li {
  font-size: 15px;
  color: var(--text);
}

.order__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}
.field input,
.field select,
.field textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 14px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.field input::placeholder,
.field textarea::placeholder {
  color: #4a5169;
}
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238a93a8' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.field--error input,
.field--error select {
  border-color: #ef4444;
}

.order__total {
  grid-column: 1 / -1;
  padding: 14px 16px;
  background: var(--primary-soft);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
}
.order__total strong {
  color: var(--primary-2);
  font-size: 18px;
}
.order__form .btn--block {
  grid-column: 1 / -1;
}
.order__hint {
  grid-column: 1 / -1;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin: 0;
}
.order__success {
  grid-column: 1 / -1;
  padding: 16px 18px;
  background: rgba(24, 209, 120, 0.12);
  border: 1px solid rgba(24, 209, 120, 0.35);
  border-radius: 10px;
  color: var(--accent);
  font-size: 15px;
}
.order__error {
  grid-column: 1 / -1;
  padding: 14px 16px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: 10px;
  color: #ef4444;
  font-size: 14px;
}

/* ============ About ============ */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about p {
  color: var(--text-muted);
  font-size: 16px;
}
.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about__stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.about__stat-num {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}
.about__stat-lbl {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============ Footer ============ */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding-top: 60px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer__tag {
  color: var(--text-muted);
  margin-top: 12px;
  font-size: 14px;
}
.footer__col h4 {
  font-size: 14px;
  margin: 0 0 12px;
  color: var(--text);
}
.footer__col p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 6px;
}
.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 13px;
}

/* ============ Responsive ============ */
@media (max-width: 920px) {
  .hero { padding: 50px 0 70px; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .section { padding: 60px 0; }
  .order { grid-template-columns: 1fr; padding: 32px 24px; gap: 36px; }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
}

@media (max-width: 520px) {
  .order__form { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .hero__stats { gap: 20px; }
  .stat__num { font-size: 22px; }
}