:root {
  --bg: #020617;
  --bg-alt: #020617;
  --bg-soft: #020617;
  --fg: #f9fafb;
  --fg-muted: #e5e7eb;
  --accent: #22c55e; /* green */
  --accent-yellow: #facc15;
  --accent-blue: #38bdf8;
  --border-subtle: rgba(148, 163, 184, 0.5);
  --surface: rgba(15, 23, 42, 0.95);
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.8);
  --radius-lg: 18px;
  --radius-xl: 26px;
  --radius-pill: 999px;
  --transition-fast: 0.18s ease-out;
  --transition-med: 0.24s ease;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 52%, #020617 100%);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(
    to bottom,
    rgba(2, 6, 23, 0.98),
    rgba(15, 23, 42, 0.96)
  );
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(248, 250, 252, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.75rem;
  position: relative;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.logo-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid rgba(250, 204, 21, 0.9);
  background: radial-gradient(circle at 30% 0, #facc15, #22c55e 45%, #38bdf8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.8);
}

.logo-image {
  width: 110%;
  height: 110%;
  object-fit: cover;
  border-radius: 50%;
}

.logo-text {
  font-weight: 600;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
  color: #fefce8;
}

.nav {
  display: inline-flex;
  gap: 1.25rem;
  align-items: center;
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.9);
  padding: 6px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #e5e7eb;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  transform-origin: center;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  color: var(--fg-muted);
  padding-block: 0.2rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--accent-yellow),
    var(--accent),
    var(--accent-blue)
  );
  transition: width var(--transition-med);
}

.nav-link:hover {
  color: var(--fg);
}

.nav-link.active::after {
  width: 100%;
}

/* Hero */

.hero {
  padding: 4rem 0 3.5rem;
  background: radial-gradient(
      circle at top left,
      rgba(250, 204, 21, 0.12),
      transparent 50%
    ),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.18), transparent 55%),
    radial-gradient(circle at bottom, rgba(56, 189, 248, 0.12), transparent 55%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 3rem;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.1rem, 3vw + 1.5rem, 3.1rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 0 0 1.75rem;
  color: var(--fg-muted);
  max-width: 32rem;
  font-size: 0.98rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast), border-color var(--transition-fast),
    color var(--transition-fast);
}

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

.primary-btn {
  background: linear-gradient(
    to right,
    var(--accent-yellow),
    var(--accent),
    var(--accent-blue)
  );
  color: #022c22;
  box-shadow: 0 14px 30px rgba(234, 179, 8, 0.6);
}

.primary-btn:hover {
  background: linear-gradient(to right, #16a34a, #22c55e);
}

.ghost-btn {
  background: rgba(15, 23, 42, 0.9);
  border-color: rgba(148, 163, 184, 0.6);
  color: var(--fg);
}

.ghost-btn:hover {
  background: rgba(15, 23, 42, 0.98);
  border-color: rgba(148, 163, 184, 0.7);
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.highlight-item {
  min-width: 160px;
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(248, 250, 252, 0.18);
  background: radial-gradient(circle at top left, rgba(234, 179, 8, 0.12), transparent),
    rgba(15, 23, 42, 0.9);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.highlight-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--fg-muted);
}

.highlight-value {
  font-size: 0.88rem;
  font-weight: 500;
}

.hero-media {
  display: flex;
  justify-content: center;
}

.product-card {
  width: 100%;
  max-width: 370px;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at top left, rgba(34, 197, 94, 0.16), transparent),
    rgba(15, 23, 42, 0.98);
  border: 1px solid rgba(248, 250, 252, 0.12);
  box-shadow: var(--shadow-soft);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.product-image-wrapper {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: radial-gradient(circle at 10% 0, rgba(34, 197, 94, 0.3), transparent),
    rgba(15, 23, 42, 0.98);
  min-height: 220px;
}

.product-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.secondary-product-image {
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 40%;
  max-width: 150px;
  border-radius: 16px;
  border: 2px solid rgba(248, 250, 252, 0.8);
  box-shadow: 0 15px 40px rgba(15, 23, 42, 0.8);
}

.product-info h2 {
  margin: 0 0 0.3rem;
  font-size: 1.2rem;
}

.product-info p {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.product-tags li {
  font-size: 0.75rem;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(56, 189, 248, 0.7);
}

/* Sections */

.section {
  padding: 3.5rem 0;
}

.section-alt {
  background: radial-gradient(circle at top left, rgba(234, 179, 8, 0.08), transparent),
    rgba(5, 12, 31, 0.98);
}

.section-header {
  text-align: center;
  margin-bottom: 2.25rem;
}

.section-header h2 {
  margin: 0 0 0.4rem;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

.section-cta {
  margin-top: 2rem;
  text-align: center;
}

/* Features */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.feature-card {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(248, 250, 252, 0.1);
  background: radial-gradient(circle at top left, rgba(34, 197, 94, 0.12), transparent),
    rgba(15, 23, 42, 0.98);
  padding: 1.1rem 1.15rem;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.8);
}

.feature-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

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

/* Steps / How it works */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.3rem;
}

.step {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(248, 250, 252, 0.08);
  background: rgba(15, 23, 42, 0.96);
  padding: 1.05rem 1.1rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.2);
  color: #e0f2fe;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.step h3 {
  margin: 0 0 0.3rem;
  font-size: 0.98rem;
}

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

/* Contact */

.contact-container {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.contact-info h2 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
}

.contact-info p {
  margin: 0 0 1.1rem;
  color: var(--fg-muted);
  font-size: 0.94rem;
}

.contact-details {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.9rem;
}

.contact-details strong {
  color: var(--fg);
}

.contact-actions {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.contact-btn {
  font-size: 0.86rem;
  padding-inline: 1.1rem;
}

.contact-form {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(248, 250, 252, 0.15);
  background: rgba(15, 23, 42, 0.98);
  box-shadow: var(--shadow-soft);
  padding: 1.5rem 1.4rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.86rem;
  color: var(--fg-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.9);
  padding: 0.55rem 0.7rem;
  font-size: 0.9rem;
  color: var(--fg);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.55);
  background: rgba(15, 23, 42, 0.96);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

.full-width {
  width: 100%;
}

.form-status {
  min-height: 1.1rem;
  margin-top: 0.6rem;
  font-size: 0.84rem;
  color: var(--fg-muted);
}

.form-status.success {
  color: #bbf7d0;
}

.form-status.error {
  color: #fecaca;
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.95), #020617);
  padding: 1rem 0 1.3rem;
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* Responsive */

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
  }

  .hero {
    padding-top: 3rem;
  }

  .product-card {
    max-width: 420px;
  }

  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-container {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-container {
    padding-block: 0.65rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    margin-top: 0.4rem;
    padding: 0.5rem 1rem 0.8rem;
    background: rgba(15, 23, 42, 0.99);
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
    display: none;
    flex-direction: column;
    gap: 0.35rem;
  }

  .nav.is-open {
    display: flex;
  }

  .hero {
    padding-top: 2.4rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-highlights {
    gap: 0.7rem;
  }

  .highlight-item {
    flex: 1 1 100%;
  }

  .features-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .steps-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}