/* Base */
:root {
  --bg: #f5fbf7;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-soft: rgba(245, 251, 247, 0.95);
  --surface-strong: #ffffff;
  --text: #0f2b1f;
  --muted: #5f7569;
  --green: #2f8f58;
  --green-soft: #8fd1a5;
  --green-strong: #1f6a3e;
  --accent: #2d7a4a;
  --accent2: #5A287F;
  --border: rgba(15, 43, 31, 0.08);
  --shadow: 0 18px 60px rgba(15, 43, 31, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

button,
a {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.brand img {
  width: 129px;
  height: auto;
}

.brand span {
  font-weight: 700;
  letter-spacing: 0.06em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), #46b36d);
  color: #08110a;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.hero {
  min-height: 60vh;
  padding: 3rem 0 4rem;
  position: relative;
  overflow: hidden;
  display: grid;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.3),
      rgba(255, 255, 255, 0.88)
    ),
    url("../assets/img/background.jpg") center / cover no-repeat;
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at top left,
      rgba(47, 143, 88, 0.16),
      transparent 30%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(47, 143, 88, 0.12),
      transparent 24%
    );
  mix-blend-mode: normal;
  z-index: -1;
}

.hero-content {
  display: grid;
  gap: 2rem;
  align-items: center;
  grid-template-columns: 1.3fr 0.9fr;
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-size: 0.78rem;
  margin-bottom: 1rem;
}
.eyebrow-secondary{
    display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent2);
  font-size: 0.78rem;
  margin-bottom: 1rem;
}
.hero-copy img {
  width: 50%;
  height: auto;
}
.hero h1 {
  font-size: clamp(3rem, 4vw, 4.8rem);
  margin: 0;
  line-height: 0.95;
}

.hero p {
  max-width: 580px;
  margin: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.section {
  padding: 5rem 0;
}

.section-header {
  display: grid;
  gap: 1rem;
  margin-bottom: 2rem;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.0vw, 2.5rem);
}

.section.intro {
  padding-top: 3rem;
}

.grid-2 {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 1fr);
}

.highlight-card {
  padding: 2rem;
}

.highlight-card h3 {
  margin-top: 0;
}

.speakers-grid {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.speaker-card {
  display: flex;
  gap: 1rem;
  padding: 1.6rem;
  align-items: flex-start;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.avatar {
  width: 56px;
  height: 56px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--green), #3fbf86);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: #08110a;
  flex-shrink: 0;
}

.speaker-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.role,
.company {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.linkedin-link {
  margin-top: 1rem;
  display: inline-block;
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
}

.program-day {
  margin-bottom: 2rem;
}

.program-day h3 {
  margin-bottom: 1rem;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.session-card {
  padding: 1.8rem;
  margin-bottom: 1.3rem;
  background: var(--surface);
}

.session-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.session-header h4 {
  margin: 0;
  font-size: 1.15rem;
}

.session-time,
.session-badge {
  color: var(--muted);
  font-size: 0.95rem;
}

.session-badge {
  background: rgba(95, 194, 122, 0.15);
  color: var(--green);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
}

.session-speakers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.session-speakers li {
  color: var(--muted);
  font-size: 0.98rem;
}

.takeoff {
  padding-bottom: 6rem;
}

.takeoff-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding: 2.2rem 2.4rem;
}

.takeoff-card h2 {
  margin: 0 0 0.8rem;
}

.footer {
  padding: 2rem 0 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.4rem;
}

.footer-inner a {
  color: var(--text);
  text-decoration: none;
}

@media (max-width: 980px) {
  .hero-content,
  .grid-2,
  .takeoff-card,
  .footer-inner {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions {
    flex-direction: column;
  }

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

@media (max-width: 680px) {
  .hero {
    padding-top: 2rem;
  }

  .hero-content {
    gap: 1.5rem;
  }

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

  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .session-header {
    flex-direction: column;
    align-items: stretch;
  }
}