:root {
  --bg:        #1C1F23;
  --surface:   #252A2E;
  --border:    #3A3F45;
  --text:      #E8E4DC;
  --muted:     #8A8278;
  --accent:    #5A7A50;
  --accent-lt: #2A332A;
  --accent2:   #8FAF6B;
  --dark:      #141618;
  --white:     #E8E4DC;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Nunito', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 60px;
  background: rgba(28, 31, 35, 0.90);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--accent2);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 6px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--muted);
  padding: 7px 16px;
  border-radius: 100px;
  transition: background 0.2s, color 0.2s;
}

.nav-links a:hover {
  background: var(--accent-lt);
  color: var(--accent2);
}

/* Hamburger button */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 200;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 10px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 99;
  background: rgba(20, 22, 24, 0.97);
  backdrop-filter: blur(20px);
  padding: 90px 30px 40px;
  border-bottom: 1px solid var(--border);
  transform: translateY(-100%);
  transition: transform 0.35s ease;
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-link {
  display: block;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--muted);
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 14px;
  transition: background 0.2s, color 0.2s;
}

.mobile-link:hover {
  background: var(--accent-lt);
  color: var(--accent2);
}

/* HERO */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 60px 80px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 70% 50%, rgba(90,122,80,0.08) 0%, transparent 60%),
    var(--bg);
}

.hero-bg-shape {
  position: absolute;
  right: -80px; top: 50%;
  transform: translateY(-50%);
  width: 580px; height: 580px;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(90,122,80,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-lt);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  padding: 7px 18px;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent2);
  margin-bottom: 28px;
  animation: fadeUp 0.7s ease forwards;
  opacity: 0;
}

.hero-title {
  font-size: clamp(3rem, 6.5vw, 5.8rem);
  line-height: 1.05;
  font-weight: 900;
  max-width: 700px;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  animation: fadeUp 0.7s 0.12s ease forwards;
  opacity: 0;
  color: var(--text);
}

.hero-title em {
  font-style: normal;
  color: var(--accent2);
}

.hero-desc {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--muted);
  max-width: 480px;
  margin-bottom: 44px;
  line-height: 1.75;
  animation: fadeUp 0.7s 0.24s ease forwards;
  opacity: 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  animation: fadeUp 0.7s 0.36s ease forwards;
  opacity: 0;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  padding: 14px 30px;
  border-radius: 100px;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 800;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  display: inline-block;
  box-shadow: 0 4px 20px rgba(90,122,80,0.3);
}

.btn-primary:hover {
  background: #4a6741;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(90,122,80,0.45);
}

.btn-secondary {
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  padding: 13px 24px;
  border-radius: 100px;
  border: 2px solid var(--border);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: var(--accent2);
  color: var(--accent2);
  background: var(--accent-lt);
}

.hero-scroll {
  position: absolute;
  bottom: 40px; left: 60px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  animation: fadeUp 0.7s 0.5s ease forwards;
  opacity: 0;
}

.scroll-line {
  width: 48px; height: 2px;
  background: var(--border);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--accent2);
  border-radius: 10px;
  animation: slideRight 2s 1.5s ease infinite;
}

/* SECTION BASE */
section { padding: 100px 60px; }

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.9rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text);
}

/* ABOUT */
#about { background: var(--surface); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  max-width: 1100px;
}

.about-image-wrap { position: relative; }

.about-photo {
  width: 100%;
  aspect-ratio: 4/5;
  background: var(--accent-lt);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  border: 2px solid var(--border);
}

.about-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.about-photo-label {
  position: absolute;
  bottom: 20px; left: 20px;
  background: rgba(20, 22, 24, 0.80);
  border: 1.5px solid var(--border);
  padding: 9px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
}

.about-frame {
  position: absolute;
  top: -14px; right: -14px;
  width: 100px; height: 100px;
  border-radius: 24px;
  background: var(--accent);
  opacity: 0.18;
  z-index: -1;
}

.about-content { padding-top: 20px; }

.about-content p {
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 18px;
  line-height: 1.8;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.skill-tag {
  padding: 8px 18px;
  background: var(--accent-lt);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: 0.83rem;
  font-weight: 800;
  color: var(--accent2);
  transition: background 0.2s, transform 0.15s;
  cursor: default;
}

.skill-tag:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* PROJECTS */
#projects { background: var(--bg); }

.projects-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 22px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}

.project-thumb {
  width: 100%;
  height: 210px;
  background: var(--accent-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.project-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.project-thumb-overlay {
  position: absolute;
  inset: 0;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.project-card:hover .project-thumb-overlay { opacity: 0.92; }

.project-body { padding: 24px 26px; }

.project-cat {
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent2);
  margin-bottom: 8px;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.project-desc {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  line-height: 1.65;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.project-tag {
  padding: 4px 13px;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
}

/* EDUCATION */
#experience { background: var(--surface); }

.timeline {
  max-width: 700px;
  margin-top: 48px;
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  border-radius: 10px;
}

.timeline-item {
  position: relative;
  margin-bottom: 44px;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.5s, transform 0.5s;
}

.timeline-item.visible {
  opacity: 1;
  transform: none;
}

.timeline-dot {
  position: absolute;
  left: -38px; top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--surface);
  border: 2.5px solid var(--accent2);
  box-shadow: 0 0 0 4px rgba(143,175,107,0.15);
}

.timeline-period {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 6px;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.timeline-company {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  line-height: 1.75;
}

/* CONTACT */
#contact {
  background: var(--dark);
  color: var(--white);
}

#contact .section-title { color: var(--white); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  margin-top: 52px;
}

.contact-info p {
  color: rgba(232,228,220,0.45);
  font-weight: 500;
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(232,228,220,0.55);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s;
}

.contact-link:hover { color: var(--white); }

.contact-link-icon {
  width: 40px; height: 40px;
  border: 1.5px solid rgba(232,228,220,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  transition: border-color 0.2s, background 0.2s;
}

.contact-link:hover .contact-link-icon {
  border-color: var(--accent2);
  background: rgba(143,175,107,0.12);
}

/* FOOTER */
footer {
  background: var(--dark);
  border-top: 1px solid rgba(232,228,220,0.06);
  padding: 28px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer p {
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(232,228,220,0.25);
}

.footer-back {
  font-size: 0.82rem;
  font-weight: 700;
  color: rgba(232,228,220,0.25);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-back:hover { color: var(--accent2); }

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideRight {
  from { left: -100%; }
  to   { left: 100%; }
}

/* RESPONSIVE */
@media (max-width: 768px) {
  nav { padding: 14px 28px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .mobile-menu { display: block; }
  section, #hero { padding: 80px 20px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .projects-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  footer { padding: 24px 20px; flex-direction: column; gap: 8px; text-align: center; }
  .hero-scroll { display: none; }
}