/* =========================================
   TOKENS
   ========================================= */
:root {
  --c-bg:        #F5F5F3;
  --c-surface:   #ECEAE6;
  --c-border:    #D8D6D0;
  --c-mid:       #9A9A98;
  --c-text:      #2C2C2A;
  --c-heading:   #111110;
  --c-accent:    #8FA68C;
  --c-accent-dk: #6B8A68;
  --c-white:     #FFFFFF;

  --font: 'Helvetica Neue', Helvetica, Arial, sans-serif;

  --nav-h: 64px;
  --section-pad: clamp(80px, 12vw, 140px);
  --max-w: 860px;
  --radius: 12px;
  --radius-sm: 6px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* =========================================
   NAV
   ========================================= */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 60px);
  background: rgba(245, 245, 243, 0.82);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

nav.scrolled {
  border-color: var(--c-border);
  box-shadow: 0 1px 24px rgba(0,0,0,0.06);
}

.nav-logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--c-heading);
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.6; }

.nav-links {
  display: flex;
  gap: clamp(20px, 3vw, 40px);
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-mid);
  letter-spacing: 0.01em;
  position: relative;
  transition: color 0.2s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1.5px;
  background: var(--c-accent);
  transition: width 0.3s var(--ease-out);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--c-heading);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0; bottom: 0;
  background: var(--c-bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  z-index: 99;
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.mobile-nav.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--c-heading);
  letter-spacing: -0.02em;
  transition: color 0.2s;
}
.mobile-nav a:hover { color: var(--c-accent); }

/* =========================================
   LAYOUT
   ========================================= */
main {
  padding-top: var(--nav-h);
}

section {
  padding: var(--section-pad) clamp(20px, 5vw, 60px);
  max-width: calc(var(--max-w) + 120px);
  margin: 0 auto;
}

section:nth-child(even) {
  background: transparent;
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* =========================================
   TYPOGRAPHY
   ========================================= */
.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 16px;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--c-heading);
  line-height: 1.1;
  margin-bottom: clamp(32px, 5vw, 56px);
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-heading);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

p {
  color: var(--c-text);
  font-size: 0.975rem;
  line-height: 1.75;
}

.lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--c-text);
  line-height: 1.75;
  max-width: 620px;
}

/* =========================================
   HERO / WORK ME
   ========================================= */
#work {
  min-height: calc(100svh - var(--nav-h));
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--c-bg) 60%, var(--c-surface));
}

.hero-intro {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--c-mid);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

#work h2 {
  font-size: clamp(2.6rem, 7vw, 5rem);
  margin-bottom: 24px;
}

.timeline {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0 32px;
  position: relative;
  padding-bottom: 36px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 120px;
  top: 8px; bottom: 0;
  width: 1px;
  background: var(--c-border);
}

.timeline-item:last-child::before { display: none; }

.timeline-year {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-mid);
  letter-spacing: 0.04em;
  padding-top: 4px;
  text-align: right;
}

.timeline-content {
  padding-left: 24px;
  position: relative;
}

.timeline-content::before {
  content: '';
  position: absolute;
  left: -4px; top: 7px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 2px solid var(--c-bg);
  box-shadow: 0 0 0 1.5px var(--c-accent);
}

.timeline-role {
  font-size: 0.8rem;
  color: var(--c-accent-dk);
  font-weight: 600;
  margin-top: 4px;
  letter-spacing: 0.02em;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 40px;
}

.skill-tag {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--c-surface);
  color: var(--c-text);
  border: 1px solid var(--c-border);
  transition: background 0.2s, transform 0.2s var(--ease-spring), border-color 0.2s;
  cursor: default;
}
.skill-tag:hover {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: var(--c-white);
  transform: translateY(-2px);
}

.cv-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  background: var(--c-heading);
  color: var(--c-white);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.2s, transform 0.2s var(--ease-spring);
}
.cv-btn:hover {
  background: var(--c-accent-dk);
  transform: translateY(-2px);
}
.cv-btn svg { width: 16px; height: 16px; }

/* =========================================
   SOCIAL ME
   ========================================= */
#social {
  background: var(--c-surface);
}

.social-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 60px;
  align-items: start;
}

.avatar-wrap {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  background: var(--c-border);
  overflow: hidden;
  position: relative;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-mid);
  font-size: 3rem;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 36px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-text);
  transition: border-color 0.2s, transform 0.2s var(--ease-spring), box-shadow 0.2s;
}
.social-link:hover {
  border-color: var(--c-accent);
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  color: var(--c-heading);
}
.social-link svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--c-mid); }
.social-link:hover svg { color: var(--c-accent); }
.social-link span { flex: 1; }
.social-link .arrow { color: var(--c-mid); font-size: 0.8rem; }

/* =========================================
   FUN ME
   ========================================= */
.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.hobby-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.25s var(--ease-spring), box-shadow 0.25s, border-color 0.25s;
  cursor: default;
}
.hobby-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.08);
  border-color: var(--c-accent);
}
.hobby-icon { font-size: 2rem; margin-bottom: 12px; }
.hobby-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-heading);
  letter-spacing: -0.01em;
}

.fun-note {
  background: var(--c-surface);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin-top: 0;
}
.fun-note p {
  font-size: 0.975rem;
  color: var(--c-text);
  font-style: italic;
}

/* =========================================
   SIDEQUEST ME
   ========================================= */
#sidequest {
  background: var(--c-surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.25s var(--ease-spring), box-shadow 0.25s, border-color 0.25s;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.09);
  border-color: var(--c-accent);
}
.project-number {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-accent);
}
.project-desc {
  font-size: 0.875rem;
  color: var(--c-mid);
  line-height: 1.6;
  flex: 1;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-text);
  margin-top: 8px;
  transition: color 0.2s, gap 0.2s;
}
.project-link:hover { color: var(--c-accent); gap: 10px; }
.project-link .arrow { font-size: 0.85rem; }

/* =========================================
   FOOTER
   ========================================= */
footer {
  padding: 40px clamp(20px, 5vw, 60px);
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-heading);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--c-mid);
}

/* =========================================
   SCROLL ANIMATIONS
   ========================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 720px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .social-layout {
    grid-template-columns: 1fr;
  }
  .avatar-wrap { max-width: 180px; }

  .timeline-item {
    grid-template-columns: 80px 1fr;
    gap: 0 16px;
  }
  .timeline-item::before { left: 80px; }

  footer { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hobbies-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
}