:root {
  --bg-page: #f9f8f6;
  --bg-card: #ffffff;
  --text-primary: #0a0a0a;
  --text-secondary: #575653;
  --text-tertiary: #94928e;
  --accent: #0a0a0a;
  --accent-blue: #0055ff;
  --border: rgba(0,0,0,0.05);
  --border-strong: rgba(0,0,0,0.12);
  --font-body: 'Figtree', sans-serif;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-pill: 100px;
  
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --trans-card: transform 0.6s var(--ease-out), box-shadow 0.6s var(--ease-out);
  --container: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: 140px;
}

h1, h2, h3, h4 {
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

a { text-decoration: none; color: inherit; }
img { display: block; width: 100%; height: auto; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

section { padding: 100px 0; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
  border: 1px solid transparent;
}
.btn-dark { background: var(--accent); color: #fff; }
.btn-dark:hover { background: #222; transform: translateY(-2px); }
.btn-ghost { border-color: var(--border-strong); color: var(--text-primary); }
.btn-ghost:hover { background: var(--text-primary); color: #fff; border-color: var(--text-primary); }

/* ─── Tags ─── */
.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(0,0,0,0.03);
  color: var(--text-secondary);
}

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 24px; left: 50%;
  transform: translateX(-50%);
  background: rgba(249, 248, 246, 0.75);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: space-between;
  width: calc(100% - 64px);
  max-width: var(--container);
  z-index: 1000;
  transition: padding 0.4s var(--ease-out), background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.navbar.scrolled {
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 12px 40px rgba(0,0,0,0.04);
}

.nav-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 0.95rem;
}
.nav-logo {
  width: 28px; height: 28px; background: var(--accent); color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700;
}

.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
  font-size: 0.9rem; font-weight: 400; color: var(--text-secondary);
  padding: 8px 16px; border-radius: var(--radius-pill);
  transition: color 0.3s, background 0.3s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.nav-cta {
  background: var(--accent); color: #fff; font-weight: 500;
}
.nav-links a.nav-cta:hover { background: #222; }

/* Hamburger */
.nav-hamburger {
  display: none; width: 32px; height: 32px; background: none; border: none; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-hamburger span {
  display: block; width: 18px; height: 1.5px; background: var(--text-primary);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none; position: fixed; top: 88px; left: 32px; right: 32px;
  background: var(--bg-card); border-radius: var(--radius-lg); padding: 16px; z-index: 999;
  box-shadow: 0 24px 64px rgba(0,0,0,0.08);
  transform: translateY(-12px); opacity: 0;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.mobile-menu.open { opacity: 1; transform: translateY(0); }
.mobile-menu a {
  display: block; padding: 14px 16px; font-weight: 500; border-radius: var(--radius-md);
}
.mobile-menu a:hover { background: var(--bg-page); }

/* ─── Hero ─── */
.hero-section { padding: 40px 0 60px; }
.hero-content { padding: 0; position: relative; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 28px; }
.hero-title { font-size: clamp(2.6rem, 5.5vw, 4.2rem); margin-bottom: 20px; max-width: 920px; }
.hero-title em { font-style: italic; font-weight: 300; color: var(--text-secondary); }
.hero-tagline { font-size: 1.25rem; color: var(--text-secondary); max-width: 620px; margin-bottom: 40px; font-weight: 300; line-height: 1.6; }
.hero-actions { display: flex; gap: 12px; margin-bottom: 64px; }
.hero-stats { display: flex; border-top: 1px solid var(--border); padding-top: 40px; }
.stat-item { flex: 1; }
.stat-value { font-size: 2rem; font-weight: 500; color: var(--text-primary); }
.stat-label { font-size: 0.75rem; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 2px; }

/* ─── Section Labels ─── */
.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 24px;
}

/* ─── About ─── */
.about-container { max-width: 720px; }
.about-h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); margin-bottom: 28px; line-height: 1.2; }
.about-bio p { margin-bottom: 24px; color: var(--text-secondary); font-size: 1.1rem; font-weight: 300; }
.skills-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 40px; }

.about-details { margin-top: 80px; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.detail-title { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 24px; }
.timeline-item { display: grid; grid-template-columns: 100px 1fr; gap: 16px; margin-bottom: 32px; }
.timeline-date { font-size: 0.8rem; color: var(--text-tertiary); padding-top: 2px; }
.timeline-content h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.timeline-content p { font-size: 0.9rem; color: var(--text-secondary); font-weight: 300; }

/* ─── Portfolio Grid ─── */
.portfolio-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; }
.filter-controls { display: flex; gap: 6px; }
.filter-btn {
  padding: 8px 18px; border-radius: var(--radius-pill); border: 1px solid transparent;
  background: rgba(0,0,0,0.03); color: var(--text-secondary); cursor: pointer;
  font-family: inherit; font-size: 0.85rem; transition: all 0.3s;
}
.filter-btn:hover { color: var(--text-primary); }
.filter-btn.active { background: var(--accent); color: #fff; }

.portfolio-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px 32px; }
.portfolio-card { display: block; }
.portfolio-img-wrapper {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 4 / 3; background: #eae8e4;
  transition: var(--trans-card);
}
.portfolio-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease-out); }
.portfolio-meta { margin-top: 16px; padding: 0 4px; }
.portfolio-cat { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-tertiary); margin-bottom: 4px; }
.portfolio-title-row { display: flex; justify-content: space-between; align-items: flex-start; }
.portfolio-card h3 { font-size: 1.2rem; font-weight: 500; color: var(--text-primary); }
.portfolio-arrow { opacity: 0; transform: translate(-4px, 4px); transition: all 0.3s var(--ease-out); color: var(--accent-blue); }

/* Card Hovers */
.portfolio-card:hover .portfolio-img-wrapper {
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.06);
}
.portfolio-card:hover .portfolio-img { transform: scale(1.04); }
.portfolio-card:hover .portfolio-arrow { opacity: 1; transform: translate(0, 0); }

/* ─── Services ─── */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.service-card {
  background: var(--bg-card); padding: 40px; border-radius: var(--radius-lg);
  transition: var(--trans-card);
}
.service-card:hover {
  transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.03);
}
.service-num { font-size: 1.1rem; font-weight: 600; color: var(--text-tertiary); margin-bottom: 24px; }
.service-title { font-size: 1.25rem; font-weight: 500; margin-bottom: 8px; }
.service-desc { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 24px; font-weight: 300; }
.service-price { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }

/* ─── Contact ─── */
.contact-section { text-align: center; max-width: 600px; margin: 0 auto; padding: 60px 0; }
.contact-section h2 { font-size: clamp(2.2rem, 4vw, 3.2rem); margin-bottom: 16px; }
.contact-section p { color: var(--text-secondary); margin-bottom: 40px; font-size: 1.1rem; font-weight: 300; }
.contact-actions { display: flex; justify-content: center; gap: 12px; }

/* ─── Footer ─── */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-tertiary); }
.footer-back { font-weight: 500; transition: color 0.2s; }
.footer-back:hover { color: var(--text-primary); }

/* ─── Motion Base Engine ─── */
.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}
.reveal.active { opacity: 1; transform: translateY(0); }

.portfolio-card { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
.portfolio-card.visible { opacity: 1; transform: translateY(0); }

/* ─── Responsive Media Queries ─── */
@media (max-width: 860px) {
  body { padding-top: 100px; }
  .container { padding: 0 24px; }
  .navbar { width: calc(100% - 48px); top: 16px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .about-details, .portfolio-grid, .services-grid { grid-template-columns: 1fr; gap: 40px; }
  .portfolio-header { flex-direction: column; align-items: flex-start; gap: 24px; }
  .hero-stats { flex-wrap: wrap; gap: 24px 0; }
  .stat-item { min-width: 50%; }
  .site-footer { flex-direction: column; gap: 16px; text-align: center; }
}