:root {
  --primary: #1a4c39;
  --primary-light: rgba(26, 76, 57, 0.1);
  --primary-hover: #143b2c;
  --dark: #121212;
  --gray-900: #121212;
  --gray-700: #4b5650;
  --gray-500: #707070;
  --gray-300: #cfd6d1;
  --gray-200: #e7e2d6;
  --gray-100: #f1ede3;
  --white: #ffffff;
  --bg: #efe9de;
  --bg-alt: #e6ddcf;
  --shadow: 0 18px 40px rgba(18, 18, 18, 0.08);
}

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

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--gray-900);
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  padding-top: 0;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

@media (min-width: 768px) {
  .container {
    padding: 0 48px;
  }
}

.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(239, 233, 222, 0.5);
  backdrop-filter: blur(8px);
  border-bottom: none;
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  color: var(--gray-500);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 6px;
}

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

.nav-links a.is-active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  border: 1px solid var(--gray-200);
  background: var(--white);
  border-radius: 10px;
  padding: 8px;
  gap: 4px;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background-color: var(--primary);
  transition: 0.3s;
}

.section {
  padding: 96px 0;
  scroll-margin-top: 110px;
}

.section-label {
  font-size: 0.75rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
}

.section-title {
  font-size: clamp(2rem, 3vw, 3.4rem);
  font-weight: 400;
  margin-top: 12px;
  letter-spacing: -0.02em;
}

.text-block {
  color: var(--gray-700);
  max-width: 680px;
  margin-top: 16px;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 220px;
  background:
    linear-gradient(0deg, rgba(239, 233, 222, 0.82), rgba(239, 233, 222, 0.82)),
    url("monstera.jpg");
  background-size: cover;
  background-position: center -40px;
  background-repeat: no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(
    to bottom,
    rgba(239, 233, 222, 0.9),
    rgba(239, 233, 222, 0.0)
  );
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
  }
}

.hero-title h1 {
  font-size: clamp(2.8rem, 4vw, 4.6rem);
  font-weight: 400;
  line-height: 1.1;
  margin-top: 16px;
}

.highlight {
  background: var(--primary);
  color: #fff;
  padding: 4px 12px;
  display: inline-block;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}




.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  background-color: var(--primary);
  color: #fff;
}

.button:hover {
  background-color: var(--primary-hover);
}

.button.ghost {
  background-color: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-900);
}

.button.ghost:hover {
  background-color: var(--gray-100);
  color: var(--gray-900);
}

.video-section {
  padding-top: 40px;
  background-color: var(--bg-alt);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.video-placeholder {
  border: 1px dashed var(--gray-300);
  border-radius: 18px;
  background-color: var(--gray-100);
  min-height: 520px;
  width: min(900px, 90%);
  margin: 24px auto 0;
  display: grid;
  place-items: center;
  color: var(--gray-500);
  font-style: italic;
}

.about {
  background-color: var(--bg);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.about-grid {
  margin-top: 32px;
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: center;
}

.focus-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--gray-700);
}

.focus-list li {
  margin-bottom: 8px;
}

.projects {
  background-color: var(--bg);
}

.skills {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.skills-grid {
  display: grid;
  gap: 48px;
  margin-top: 40px;
}

@media (min-width: 900px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 72px;
  }
}

.skills-bullets {
  display: grid;
  row-gap: 18px;
  margin: 32px 0 0;
  padding: 0 0 0 18px;
  list-style: disc;
  list-style-position: outside;
}

.skill-name {
  font-weight: 600;
  margin-bottom: 4px;
}

.skill-detail {
  color: var(--gray-600);
  font-weight: 300;
}

.certificates-wrapper {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  width: 100%;
}

.certificates-slider {
  max-width: 440px;
  width: 100%;
}

.certificates-viewport {
  overflow: hidden;
  border-radius: 0;
  width: 100%;
  aspect-ratio: 210 / 297;
  border: none;
  background-color: var(--white);
}

.certificates-track {
  display: flex;
  transition: transform 0.4s ease;
  height: 100%;
}

.certificate-slide {
  min-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.certificate-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  display: block;
}

.certificates-controls {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.certificates-btn {
  border: none;
  background: transparent;
  color: var(--primary);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  padding: 4px 6px;
}

.certificates-dots {
  display: flex;
  gap: 8px;
}

.certificates-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--gray-400);
  background: transparent;
  cursor: pointer;
}

.certificates-dot.is-active {
  background: var(--primary);
  border-color: var(--primary);
}

.project-grid {
  margin-top: 40px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.project-card {
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  padding: 22px;
}

.project-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.mindset {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.mindset-grid {
  margin-top: 28px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.mindset-card {
  border: 1px solid var(--gray-200);
  padding: 20px;
  background: var(--white);
}

.mindset-reading {
  background: var(--bg-alt);
  border-top: 1px solid var(--gray-200);
}

.mindset-subtitle {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  margin-top: 32px;
  color: var(--primary);
}

.mindset-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--gray-700);
  line-height: 1.7;
}

.meet {
  padding-bottom: 120px;
  background-color: var(--bg-alt);
}

.contact-grid {
  display: grid;
  gap: 24px;
  margin-top: 40px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.contact-card {
  padding: 24px;
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: all 0.3s ease;
  background: var(--white);
}

.contact-card:hover {
  border-color: var(--primary);
}

.contact-card-icon {
  width: 52px;
  height: 52px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--primary);
  font-weight: 600;
}

.contact-card-title {
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.contact-card-text {
  color: var(--gray-500);
  font-weight: 300;
  font-size: 0.875rem;
}

.footer {
  border-top: 1px solid var(--gray-200);
  padding: 32px 0;
  text-align: center;
  background-color: var(--bg);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.footer p {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    padding: 20px 0;
    gap: 0;
    border-bottom: 1px solid var(--gray-200);
  }

  .nav-links.is-open {
    left: 0;
  }

  .nav-links a {
    display: block;
    padding: 15px;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .hamburger.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}