/* Base reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Global styles */
:root {
  --bg: #0f172a;
  --bg-soft: #111827;
  --card-bg: #020617;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border-subtle: #1f2937;
  --radius-lg: 12px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.9);
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.8);
  --transition-fast: 0.18s ease-out;
  --container-width: 1120px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #1d283a 0, #020617 45%, #020617 100%);
  color: var(--text);
  line-height: 1.6;
}

/* Layout helpers */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(20px);
  background: linear-gradient(
      to bottom,
      rgba(15, 23, 42, 0.95),
      rgba(15, 23, 42, 0.7),
      transparent
    );
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.logo {
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #e5e7eb;
}

.logo::before {
  content: "▶";
  font-size: 0.8rem;
  margin-right: 0.45rem;
  color: var(--accent);
}

/* Navigation */
.nav {
  display: flex;
  gap: 1.1rem;
  font-size: 0.9rem;
}

.nav-link {
  position: relative;
  text-decoration: none;
  color: var(--muted);
  padding: 0.15rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.12rem;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), #22c55e);
  border-radius: 999px;
  transition: width var(--transition-fast);
}

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

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

.nav-link.active {
  color: var(--accent);
}

/* Hero section */
.hero {
  padding: 3.5rem 0 2.5rem;
}

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

.hero-text {
  max-width: 640px;
  text-align: center;
}

.hero-text h2 {
  font-size: clamp(1.9rem, 3vw, 2.2rem);
  margin-bottom: 0.9rem;
}

.hero-text p {
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 520px;
  margin: 0 auto 1.5rem;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.9rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  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-primary {
  background: radial-gradient(circle at top left, #38bdf8, #2563eb);
  color: #f9fafb;
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 55px rgba(15, 23, 42, 0.85);
}

.btn-secondary {
  background: var(--card-bg);
  border-color: rgba(148, 163, 184, 0.25);
  color: var(--text);
}

.btn-secondary:hover {
  background: #020617;
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* Tracks section */
.tracks-section {
  padding: 0 0 2.5rem;
}

.section-title {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.3rem;
}

/* Cards */
.track-card {
  position: relative;
  background: radial-gradient(circle at top left, #020617, #020617 40%, #030712);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 1.15rem 1.1rem 1.15rem;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: border-color var(--transition-fast),
    transform var(--transition-fast), box-shadow var(--transition-fast);
}

.track-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(
    circle at top,
    rgba(56, 189, 248, 0.16),
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.track-card:hover {
  border-color: rgba(56, 189, 248, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 24px 55px rgba(15, 23, 42, 0.95);
}

.track-card:hover::before {
  opacity: 1;
}

.track-card h4 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}

.track-card > p {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.7rem;
}

/* Card list */
.card-list {
  list-style: none;
  margin-bottom: 0.9rem;
}

.card-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.86rem;
  color: #d1d5db;
  margin-bottom: 0.2rem;
}

.card-list li::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 0.6rem;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: radial-gradient(circle, var(--accent), #22c55e);
}

/* How-to section */
.howto-section {
  padding: 0 0 3rem;
}

.steps-list {
  margin-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.steps-list li {
  margin-bottom: 0.3rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  background: linear-gradient(
    to top,
    rgba(15, 23, 42, 0.95),
    rgba(15, 23, 42, 0.3)
  );
}

.footer-content {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  padding: 0.9rem 0 1.2rem;
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 0.7rem;
  }

  .hero {
    padding-top: 2.7rem;
  }

  .hero-text h2 {
    font-size: 1.65rem;
  }
}


.inquiry-form {
  margin-top: 0.7rem;
  max-width: 520px;
}

.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.65rem;
  font-size: 0.86rem;
}

.form-row label {
  margin-bottom: 0.15rem;
  color: var(--muted);
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  background: #020617;
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}

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

.form-hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}


/* Partners & feedback strips */
.partners-strip,
.feedback-strip {
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  border-bottom: 1px solid rgba(15, 23, 42, 0.9);
  background: radial-gradient(circle at top, #020617, #020617 40%, #020617);
}

.partners-strip {
  padding: 0.4rem 0;
}

.feedback-strip {
  padding: 0.5rem 0;
  background: radial-gradient(circle at top, #020617, #020617 50%, #020617);
}

.marquee {
  overflow: hidden;
  position: relative;
  white-space: nowrap;
}

.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 2.5rem;
  padding-left: 2.5rem;
  animation: marquee-scroll 30s linear infinite;
}

.partner,
.feedback {
  font-size: 0.8rem;
  color: #cbd5f5;
  opacity: 0.9;
}

.partner {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
}

.feedback {
  font-style: italic;
}

/* Pause on hover */
.partners-strip:hover .marquee-track,
.feedback-strip:hover .marquee-track {
  animation-play-state: paused;
}

/* Keyframes for horizontal loop */
@keyframes marquee-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.webinar-meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}