/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ─── Theme Variables ──────────────────────────────────────── */
:root {
  --bg:               #0c0c0c;
  --surface:          #141414;
  --card:             #191919;
  --card-hover:       #1e1e1e;
  --border:           #242424;
  --text:             #f0ede8;
  --muted:            #666;
  --subtle:           #333;
  --accent:           #F0EA6E;
  --accent-text:      #F0EA6E;
  --nav-bg-scrolled:  rgba(12, 12, 12, 0.85);

  --font: 'Inter', system-ui, sans-serif;
  --nav-h: 64px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg:               #f5f3ee;
  --surface:          #eceae3;
  --card:             #e5e3db;
  --card-hover:       #dbd9d1;
  --border:           #d0cec6;
  --text:             #1a1916;
  --muted:            #888;
  --subtle:           #bbb;
  --accent:           #F0EA6E;
  --accent-text:      #141100;
  --nav-bg-scrolled:  rgba(245, 243, 238, 0.88);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

a { color: inherit; text-decoration: none; }
em { font-style: italic; }

/* ─── Navigation ───────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s;
}

.nav.scrolled {
  background: var(--nav-bg-scrolled);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--border);
  flex-shrink: 0;
  transition: border-color 0.2s;
  display: block;
}
.nav-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.nav-avatar:hover { border-color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }

.nav-cta {
  color: var(--text);
  border: 1px solid var(--border);
  padding: 7px 16px;
  border-radius: 100px;
  font-size: 13px;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.nav-cta:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.theme-toggle {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.theme-toggle:hover {
  color: var(--text);
  border-color: var(--subtle);
}
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ─── Sections ─────────────────────────────────────────────── */
.section {
  padding: 100px 40px;
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 64px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-num { color: var(--subtle); }

.section-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--text);
}

/* ─── Projects Grid ────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.project-card {
  position: relative;
  background: var(--card);
  overflow: hidden;
  cursor: pointer;
  transition: background 0.3s;
}
.project-card:hover { background: var(--card-hover); }

.project-card--wide { grid-column: span 2; }

.project-thumb {
  width: 100%;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  position: relative;
}

.project-card:not(.project-card--wide) .project-thumb {
  aspect-ratio: 4 / 3;
}

.project-thumb-inner {
  width: 100%;
  height: 100%;
  transition: transform 0.8s var(--ease);
}

.project-card:hover .project-thumb-inner {
  transform: scale(1.04);
}

.project-thumb--1 .project-thumb-inner {
  background: url('images/mercado-pago.png') top center/cover no-repeat;
}

.project-thumb--2 .project-thumb-inner {
  background: url('images/scup-care-mobile.jpg') top center/cover no-repeat;
}

.project-thumb--3 .project-thumb-inner {
  background: url('images/scup.jpg') top center/cover no-repeat;
}

.project-thumb--4 .project-thumb-inner {
  background: url('images/socializa.jpg') top center/cover no-repeat;
}

.project-info {
  padding: 28px 32px 32px;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.project-company {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-year {
  font-size: 11px;
  color: var(--subtle);
}

.project-title {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--text);
  transition: color 0.2s;
}
.project-card:hover .project-title { color: var(--accent-text); }

.project-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tags span {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 100px;
}

.project-link {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.project-arrow {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), background 0.2s, color 0.2s;
}

.project-card:hover .project-arrow {
  opacity: 1;
  transform: translateX(0);
  background: var(--accent);
  color: #1a1916;
  border-color: var(--accent);
}

/* ─── About ────────────────────────────────────────────────── */
.section--about { border-bottom: none; }

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

.about-lead {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 24px;
}

.about-bio p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 18px;
}

.about-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-top: 16px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
  transition: gap 0.2s var(--ease), border-color 0.2s, color 0.2s;
}
.about-cta:hover {
  gap: 16px;
  color: var(--accent-text);
  border-color: var(--accent-text);
}

/* Services */
.services { margin-bottom: 48px; }

.services-title {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

.service-list {
  display: flex;
  flex-direction: column;
}

.service-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: padding-left 0.2s var(--ease);
}
.service-item:first-child { border-top: 1px solid var(--border); }
.service-item:hover { padding-left: 6px; }

.service-icon {
  font-size: 11px;
  color: var(--subtle);
  letter-spacing: 0.08em;
  margin-top: 2px;
  flex-shrink: 0;
  width: 24px;
}

.service-item strong {
  font-size: 15px;
  font-weight: 500;
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.service-item p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ─── Footer ───────────────────────────────────────────────── */
.footer {
  padding: 32px 40px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.footer-copy {
  font-size: 12px;
  color: var(--subtle);
}

.footer-right { display: flex; gap: 24px; }

.footer-social {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.2s;
  position: relative;
}
.footer-social::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.2s var(--ease);
}
.footer-social:hover { color: var(--text); }
.footer-social:hover::after { width: 100%; }

/* ─── Reveal Animation ─────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ─── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav { padding: 0 24px; }
  .section { padding: 72px 24px; }

  .projects-grid { grid-template-columns: 1fr; }
  .project-card--wide { grid-column: span 1; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding: 32px 24px;
  }
}

@media (max-width: 480px) {
  .nav-links { gap: 16px; }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}