:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #eef3ff;
  --text: #152136;
  --muted: #5d6a80;
  --primary: #135d66;
  --primary-2: #0f766e;
  --accent: #ef8354;
  --line: #d8deea;
  --shadow: 0 20px 50px rgba(21, 33, 54, 0.12);
  --radius: 18px;
  --radius-sm: 12px;
  --container: min(1120px, 92vw);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at 15% 10%, #fefefe 0%, #f3f6fb 35%, #eef3fa 100%);
  font-family: "Manrope", sans-serif;
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0;
}

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

.container {
  width: var(--container);
  margin-inline: auto;
}

.section {
  padding: 84px 0;
  position: relative;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.bg-orb {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(56px);
  opacity: 0.25;
  z-index: -1;
  pointer-events: none;
}

.orb-a {
  top: -120px;
  right: -120px;
  background: #4f9da6;
}

.orb-b {
  left: -120px;
  bottom: -120px;
  background: #eab676;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

.topbar.scrolled {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  border-color: var(--line);
}

.nav-wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-family: "Playfair Display", serif;
  font-size: 1.3rem;
  letter-spacing: 0.2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav a {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
}

.menu-btn {
  display: none;
  border: 0;
  background: transparent;
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
}

.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
}

.hero {
  padding-top: 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-2);
  font-weight: 700;
  margin-bottom: 18px;
}

.hero h1 {
  font-family: "Playfair Display", serif;
  font-size: clamp(2rem, 4vw, 3.3rem);
  margin-bottom: 18px;
}

.lead {
  color: var(--muted);
  max-width: 64ch;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 11px 18px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 10px 24px rgba(15, 118, 110, 0.3);
}

.btn-ghost {
  border: 1px solid var(--line);
  background: #fff;
}

.btn-soft {
  background: var(--surface-2);
  color: var(--primary);
}

.btn-link {
  color: var(--primary);
}

.social-links {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--primary);
  background: #fff;
}

.social-links.dark a {
  background: var(--surface-2);
}

.hero-card {
  background: linear-gradient(170deg, #ffffff, #f2f6ff);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  border: 1px solid #e3e8f3;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.avatar {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #fff;
  box-shadow: 0 10px 22px rgba(21, 33, 54, 0.2);
}

.hero-card h2 {
  font-size: 1.35rem;
}

.hero-card p {
  color: var(--muted);
}

.section-head {
  margin-bottom: 26px;
}

.section-head h2 {
  font-family: "Playfair Display", serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.expertise-grid,
.program-grid,
.resume-grid,
.contact-grid,
.audience-grid {
  display: grid;
  gap: 16px;
}

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

.card,
.program-card,
.panel,
.audience-card {
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 18px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card i {
  font-size: 1.2rem;
  color: var(--accent);
}

.card h3 {
  font-size: 1.02rem;
}

.card p {
  color: var(--muted);
  font-size: 0.94rem;
}

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

.program-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.program-card.featured {
  grid-column: span 2;
  background: linear-gradient(170deg, #ffffff, #edf5ff);
}

.program-card h3 {
  font-size: 1.1rem;
}

.program-card p {
  color: var(--muted);
}

.program-points {
  margin: 2px 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 5px;
}

.actions {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.audience-grid {
  margin-top: 22px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.audience-card h3 {
  margin-bottom: 8px;
}

.audience-card p {
  color: var(--muted);
  font-size: 0.94rem;
}

.section-dark {
  color: #fff;
  background:
    linear-gradient(140deg, rgba(18, 84, 96, 0.95), rgba(10, 56, 78, 0.95)),
    url("../imgs/header_small.jpg") center/cover no-repeat;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stats-grid article {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
}

.stats-grid h3 {
  font-size: clamp(1.7rem, 4vw, 2.2rem);
}

.stats-grid p {
  opacity: 0.88;
  font-size: 0.94rem;
}

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

.panel h3 {
  margin-bottom: 12px;
}

.panel ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.gallery-item {
  border-radius: 14px;
  overflow: hidden;
  min-height: 180px;
  position: relative;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.01);
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 16, 30, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 120;
  padding: 20px;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: min(1200px, 96vw);
  max-height: 90vh;
  border-radius: 14px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.contact-grid {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(280px, 0.82fr);
  gap: 20px;
  align-items: start;
}

.form {
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.form label {
  font-size: 0.88rem;
  font-weight: 700;
  color: #273247;
}

.form input,
.form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 13px;
  font: inherit;
  background: #fbfcff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(19, 93, 102, 0.14);
  border-color: var(--primary);
  background: #fff;
}

.form textarea {
  min-height: 136px;
  resize: vertical;
}

.contact-grid .panel {
  padding: 20px;
  box-shadow: 0 10px 24px rgba(21, 33, 54, 0.08);
}

#contact .panel h3 {
  margin-bottom: 14px;
  font-size: 1.1rem;
}

#contact .form .btn {
  width: 100%;
  margin-top: 6px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(170deg, #ffffff, #f4f8ff);
}

.contact-info p {
  color: #33415a;
  line-height: 1.5;
}

.inline-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.inline-actions .btn {
  flex: 1 1 140px;
}

.panel ul.social-links {
  list-style: none;
  padding-left: 0;
  display: flex;
  gap: 10px;
}

.contact-info .social-links {
  margin-top: 2px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  background: #fff;
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer p {
  color: var(--muted);
}

@media (max-width: 1024px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 760px) {
  .section {
    padding: 70px 0;
  }

  .menu-btn {
    display: inline-block;
  }

  .nav {
    position: absolute;
    right: 4vw;
    top: 64px;
    width: min(320px, 92vw);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .program-grid,
  .expertise-grid,
  .gallery-grid,
  .stats-grid,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .program-card.featured {
    grid-column: auto;
  }

  .footer-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}