/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-dark: #1A3A1A;
  --green-primary: #639922;
  --green-mid: #C0DD97;
  --green-light: #EAF3DE;
  --green-accent: #7EC84A;
  --green-deep: #27500A;
  --neutral-bg: #F5F5F3;
  --neutral-border: #D3D1C7;
  --neutral-muted: #888780;
  --text-dark: #1A3A1A;
  --text-body: #444441;
  --text-on-dark: #9FBF80;
  --white: #FFFFFF;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
}

/* DARK MODE */
body.dark {
  --neutral-bg: #0F1F0F;
  --white: #162516;
  --text-dark: #EAF3DE;
  --text-body: #C0DD97;
  --neutral-border: #2A4A2A;
  --neutral-muted: #8AAA78;
}
body.dark .skill-card,
body.dark .proj-card,
body.dark .tl-content,
body.dark .blog-card,
body.dark .test-card {
  background: #1A3A1A;
  border-color: #2A4A2A;
}
body.dark .proj-title,
body.dark .blog-title,
body.dark .tl-role,
body.dark .test-name {
  color: #EAF3DE;
}
body.dark .about {
  background: #162516;
}
body.dark .projects,
body.dark .blog {
  background: #162516;
}
body.dark .about-img-placeholder {
  background: #1A3A1A;
}
body.dark .bar-track { background: #2A4A2A; }
body.dark .form-group input,
body.dark .form-group textarea { color: #EAF3DE; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--neutral-bg);
  color: var(--text-body);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
}

/* ===== UTILITIES ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
.section-tag {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--green-primary);
  margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 32px;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
}
.section-header .section-title { margin-bottom: 0; }
.view-all {
  font-size: 13px;
  color: var(--green-primary);
  border: 1px solid var(--green-mid);
  padding: 6px 16px;
  border-radius: 20px;
  text-decoration: none;
  transition: background var(--transition);
  white-space: nowrap;
}
.view-all:hover { background: var(--green-light); }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-block;
  background: var(--green-primary);
  color: #fff;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover { background: #4d7a19; transform: translateY(-1px); }
.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--green-accent);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--green-primary);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn-outline:hover { background: rgba(99,153,34,.1); transform: translateY(-1px); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--green-dark);
  height: 64px;
  border-bottom: 1px solid rgba(96,153,34,.2);
  transition: background var(--transition);
}
.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--green-accent);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
}
.nav-links a {
  font-size: 14px;
  color: var(--green-mid);
  text-decoration: none;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }
.nav-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.toggle-track {
  display: block;
  width: 40px;
  height: 20px;
  background: var(--green-deep);
  border-radius: 10px;
  position: relative;
  transition: background var(--transition);
}
.toggle-dot {
  display: block;
  width: 14px;
  height: 14px;
  background: var(--green-accent);
  border-radius: 50%;
  position: absolute;
  top: 3px;
  right: 3px;
  transition: transform var(--transition);
}
body.dark .toggle-dot { transform: translateX(-20px); }
.nav-cta {
  background: var(--green-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition);
}
.nav-cta:hover { background: #4d7a19; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--green-mid);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  background: var(--green-dark);
  padding: 140px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}
.hero-text { flex: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-deep);
  color: var(--green-mid);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--green-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}
.hero-name {
  font-family: var(--font-display);
  font-size: 72px;
  font-weight: 800;
  line-height: 1.0;
  color: #fff;
  margin-bottom: 12px;
}
.hero-name .accent { color: var(--green-accent); }
.hero-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  color: var(--green-accent);
  margin-bottom: 20px;
}
.hero-bio {
  font-size: 16px;
  color: var(--text-on-dark);
  max-width: 460px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; margin-bottom: 48px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--green-deep);
}
.stat { display: flex; flex-direction: column; }
.stat-n {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--green-accent);
}
.stat-l { font-size: 12px; color: var(--text-on-dark); }
.hero-img-wrap { flex-shrink: 0; }
.hero-img {
  width: 280px;
  height: 340px;
  border-radius: 20px;
  background: var(--green-deep);
  border: 3px solid var(--green-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

/* ===== ABOUT ===== */
.about {
  padding: 100px 0;
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 60px;
  align-items: start;
}
.about-img-placeholder {
  width: 240px;
  height: 280px;
  border-radius: var(--radius-lg);
  background: var(--green-light);
  border: 1px solid var(--green-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.about-img-placeholder svg { width: 140px; height: 140px; }
.about-bio {
  font-size: 16px;
  color: var(--neutral-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.tag {
  background: var(--green-light);
  color: #3B6D11;
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 20px;
  font-weight: 500;
}

/* ===== SKILLS ===== */
.skills {
  padding: 100px 0;
  background: var(--neutral-bg);
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.skill-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-border);
  padding: 28px;
}
.skill-card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: #3B6D11;
  margin-bottom: 20px;
}
.skill-bar-row { margin-bottom: 16px; }
.skill-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--neutral-muted);
  margin-bottom: 6px;
}
.bar-track {
  height: 6px;
  background: var(--neutral-border);
  border-radius: 3px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--green-primary);
  border-radius: 3px;
  transition: width 1s ease;
}

/* ===== PROJECTS ===== */
.projects {
  padding: 100px 0;
  background: var(--white);
}
.proj-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filt {
  font-size: 13px;
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid var(--neutral-border);
  color: var(--neutral-muted);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-body);
}
.filt:hover { border-color: var(--green-primary); color: var(--green-primary); }
.filt.active { background: var(--green-primary); color: #fff; border-color: var(--green-primary); }
.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proj-card {
  border: 1px solid var(--neutral-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  transition: transform var(--transition), box-shadow var(--transition);
}
.proj-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(99,153,34,.1); }
.proj-card.hidden { display: none; }
.proj-img {
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.proj-body { padding: 20px; }
.proj-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.proj-desc { font-size: 13px; color: var(--neutral-muted); line-height: 1.6; margin-bottom: 12px; }
.proj-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.ptag {
  background: var(--green-light);
  color: #3B6D11;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  font-weight: 500;
}
.proj-links { display: flex; gap: 10px; }
.plink {
  font-size: 12px;
  color: var(--green-primary);
  border: 1px solid var(--green-mid);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition);
}
.plink:hover { background: var(--green-light); }

/* ===== EXPERIENCE ===== */
.experience {
  padding: 100px 0;
  background: var(--neutral-bg);
}
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 0;
  width: 2px;
  background: var(--green-light);
}
.tl-item {
  display: flex;
  gap: 24px;
  margin-bottom: 36px;
  position: relative;
}
.tl-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: -40px;
}
.tl-year {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  color: var(--green-primary);
  white-space: nowrap;
}
.tl-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--green-primary);
  border: 3px solid var(--green-light);
  flex-shrink: 0;
  z-index: 1;
}
.tl-dot.edu { background: var(--green-mid); }
.tl-content {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  flex: 1;
  border: 1px solid var(--neutral-border);
}
.tl-role {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.tl-company { font-size: 13px; color: var(--green-primary); margin-bottom: 8px; }
.tl-desc { font-size: 13px; color: var(--neutral-muted); line-height: 1.6; }

/* ===== BLOG ===== */
.blog {
  padding: 100px 0;
  background: var(--white);
}
.blog-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.blog-card {
  border: 1px solid var(--neutral-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition);
  background: var(--white);
}
.blog-card:hover { transform: translateY(-4px); }
.blog-card.hidden { display: none; }
.blog-img {
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-body { padding: 20px; }
.blog-cat {
  font-size: 11px;
  font-weight: 600;
  color: var(--green-primary);
  text-transform: uppercase;
  letter-spacing: .08em;
  display: block;
  margin-bottom: 8px;
}
.blog-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.blog-excerpt { font-size: 13px; color: var(--neutral-muted); line-height: 1.6; }

/* ===== TESTIMONIALS ===== */
.testimonials {
  padding: 100px 0;
  background: var(--neutral-bg);
}
.test-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.test-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--neutral-border);
}
.test-quote {
  font-size: 14px;
  color: var(--neutral-muted);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 20px;
}
.test-person { display: flex; align-items: center; gap: 12px; }
.test-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--green-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: #27500A;
  flex-shrink: 0;
}
.test-name { font-size: 14px; font-weight: 500; color: var(--text-dark); }
.test-pos { font-size: 12px; color: var(--green-primary); }

/* ===== CONTACT ===== */
.contact {
  padding: 100px 0;
  background: var(--green-dark);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact .section-tag { color: var(--green-mid); }
.contact .section-title { color: #fff; }
.contact-bio { font-size: 15px; color: var(--text-on-dark); line-height: 1.8; margin-bottom: 28px; }
.contact-detail { margin-bottom: 12px; font-size: 14px; color: var(--text-on-dark); }
.contact-label { color: var(--green-mid); font-weight: 500; display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 2px; }
.social-row { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.social-btn {
  background: var(--green-deep);
  color: var(--green-mid);
  font-size: 13px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition);
}
.social-btn:hover { background: var(--green-primary); color: #fff; }

/* CONTACT FORM */
.contact-form { display: flex; flex-direction: column; gap: 0; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 13px; color: var(--green-mid); font-weight: 500; }
.form-group input,
.form-group textarea {
  background: var(--green-deep);
  border: 1px solid rgba(192,221,151,.2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 14px;
  color: #fff;
  font-family: var(--font-body);
  transition: border var(--transition);
  resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(159,191,128,.5); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-primary);
}
.form-group input.error,
.form-group textarea.error { border-color: #E24B4A; }
.form-error { font-size: 12px; color: #F09595; min-height: 16px; }
.form-submit { margin-top: 4px; align-self: flex-start; }
.form-success {
  font-size: 14px;
  color: var(--green-mid);
  margin-top: 12px;
  display: none;
}
.form-success.visible { display: block; }

/* ===== FOOTER ===== */
.footer {
  background: #0F1F0F;
  padding: 28px 0;
  border-top: 1px solid var(--green-deep);
}
.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--green-accent);
}
.footer-copy { font-size: 13px; color: var(--text-on-dark); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 13px; color: var(--text-on-dark); text-decoration: none; transition: color var(--transition); }
.footer-links a:hover { color: var(--green-mid); }

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .skills-grid,
  .proj-grid,
  .test-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-name { font-size: 56px; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--green-dark); padding: 20px; gap: 16px; border-top: 1px solid var(--green-deep); }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .hero-container { flex-direction: column; text-align: center; padding: 0 20px; }
  .hero-name { font-size: 48px; }
  .hero-bio { margin: 0 auto 36px; }
  .hero-btns { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-img-wrap { order: -1; }
  .about-grid { grid-template-columns: 1fr; }
  .about-img-placeholder { width: 100%; }
  .skills-grid,
  .proj-grid,
  .blog-grid,
  .test-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 28px; }
  .footer-container { flex-direction: column; text-align: center; }
  .timeline { padding-left: 20px; }
  .tl-left { margin-left: -28px; }
}