:root {
  --dark-bg: #1a1f35;
  --darker-bg: #13172a;
  --card-bg: #1f2540;
  --accent-green: #3cba7c;
  --accent-green-dark: #2ea066;
  --white: #ffffff;
  --text-muted: #a0a8c0;
  --light-gray: #e8eaf0;
  --border: rgba(255, 255, 255, 0.08);
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--dark-bg);
  color: var(--white);
  line-height: 1.6;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 70px;
  background: rgba(19, 23, 42, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav img {
  height: 40px;
  width: auto;
}

nav .nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

nav .nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

nav .nav-links a:hover { color: var(--white); }

nav .nav-cta {
  background: var(--accent-green);
  color: var(--darker-bg);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s;
}

nav .nav-cta:hover { background: var(--accent-green-dark); }

/* ── Hero ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 5% 60px;
  background: radial-gradient(ellipse at 50% 0%, rgba(60, 186, 124, 0.12) 0%, transparent 65%),
              var(--darker-bg);
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../assets/logo-icon-transparent.png') center/500px no-repeat;
  opacity: 0.04;
  pointer-events: none;
}

.hero-content { max-width: 780px; position: relative; }

.hero-badge {
  display: inline-block;
  background: rgba(60, 186, 124, 0.15);
  border: 1px solid rgba(60, 186, 124, 0.35);
  color: var(--accent-green);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

#hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

#hero h1 span { color: var(--accent-green); }

#hero p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent-green);
  color: var(--darker-bg);
  padding: 0.85rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: var(--accent-green-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  padding: 0.85rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.05);
}

/* ── Sections shared ── */
section { padding: 90px 5%; }

.section-label {
  display: inline-block;
  color: var(--accent-green);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 560px;
}

.section-header { margin-bottom: 3.5rem; }

/* ── Features ── */
#features { background: var(--dark-bg); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: rgba(60, 186, 124, 0.4);
  transform: translateY(-3px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(60, 186, 124, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.3rem;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* ── How It Works ── */
#how-it-works { background: var(--darker-bg); }

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
}

.step {
  text-align: center;
  padding: 2rem 1.5rem;
}

.step-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(60, 186, 124, 0.15);
  border: 2px solid var(--accent-green);
  color: var(--accent-green);
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* ── CTA / Contact ── */
#contact {
  background: var(--dark-bg);
  text-align: center;
}

.contact-wrapper {
  max-width: 560px;
  margin: 0 auto;
}

.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  margin-top: 2.5rem;
  text-align: left;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--light-gray);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--darker-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  color: var(--white);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(160, 168, 192, 0.5);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-green);
}

.form-group select option { background: var(--darker-bg); }

.form-group textarea { resize: vertical; min-height: 100px; }

.form-submit {
  width: 100%;
  background: var(--accent-green);
  color: var(--darker-bg);
  border: none;
  padding: 0.9rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  margin-top: 0.5rem;
}

.form-submit:hover {
  background: var(--accent-green-dark);
  transform: translateY(-1px);
}

.form-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 1rem;
}

/* ── Success message ── */
.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
}

.form-success .checkmark {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.form-success h3 { margin-bottom: 0.5rem; }
.form-success p { color: var(--text-muted); font-size: 0.95rem; }

/* ── Footer ── */
footer {
  background: var(--darker-bg);
  border-top: 1px solid var(--border);
  padding: 2.5rem 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

footer img { height: 32px; width: auto; }

footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer .footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

footer .footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

footer .footer-links a:hover { color: var(--white); }

/* ── Responsive ── */
@media (max-width: 640px) {
  nav .nav-links { display: none; }
  .form-row { grid-template-columns: 1fr; }
  footer { flex-direction: column; text-align: center; }
  footer .footer-links { justify-content: center; }
}