/* ===========================================
   Andean Architect — Design System
   =========================================== */

:root {
  /* Tonal Palette */
  --primary: #af101a;
  --primary-container: #ffdad6;
  --on-primary: #ffffff;
  --secondary: #885200;
  --secondary-container: #ffddb5;
  --tertiary: #705d00;

  /* Surfaces — Tonal Layering */
  --surface: #f9f9f6;
  --surface-dim: #f0efeb;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f4f3ef;
  --surface-container: #eeede9;
  --surface-container-high: #e8e7e3;

  /* Text */
  --on-surface: #1a1c1b;
  --on-surface-variant: #44474e;
  --outline: #74777f;
  --outline-variant: #c4c6d0;

  /* Fonts */
  --serif: 'Noto Serif', Georgia, serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout */
  --max-w: 1080px;
  --nav-h: 64px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-padding-top: var(--nav-h); }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}

/* --- Nav: Glassmorphism --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--surface-container-low);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
}
.nav.scrolled {
  background: rgba(249, 249, 246, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
}
.nav-logo img {
  border-radius: 8px;
  width: 40px;
  height: 40px;
  object-fit: cover;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a:not(.nav-btn) {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: color 0.2s;
  position: relative;
  padding-bottom: 8px;
}
.nav-links a:not(.nav-btn)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-links a:not(.nav-btn):hover { color: var(--on-surface); }
.nav-links a:not(.nav-btn).active {
  color: var(--primary);
  font-weight: 600;
}
.nav-links a:not(.nav-btn).active::after {
  width: 100%;
}
.nav-btn {
  background: var(--primary) !important;
  color: var(--on-primary) !important;
  padding: 10px 22px !important;
  border-radius: 12px;
  font-size: 0.82rem !important;
  font-weight: 600 !important;
  transition: opacity 0.2s !important;
}
.nav-btn:hover { opacity: 0.9; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--on-surface);
  border-radius: 2px;
}

/* --- Intro Splash --- */
.intro {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--surface-container-low);
  z-index: 9999;
  transition: transform 0.8s cubic-bezier(0.65, 0, 0.35, 1), opacity 0.8s ease;
}
.intro.dismiss {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}
.intro.hidden {
  display: none;
}
.intro-content {
  text-align: center;
  animation: introFadeIn 1.2s ease both;
}
.intro-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--primary);
  margin-bottom: 20px;
  animation: introFadeIn 0.8s ease 0.2s both;
}
.intro-name {
  font-family: var(--serif);
  font-size: 5.5rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--on-surface);
  animation: introFadeIn 0.8s ease 0.4s both;
}
.intro-name em {
  font-style: italic;
  color: var(--primary);
}
.intro-line {
  width: 56px;
  height: 4px;
  background: var(--secondary);
  border-radius: 2px;
  margin: 28px auto 0;
  animation: introLineExpand 0.6s ease 0.8s both;
}

@keyframes introFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes introLineExpand {
  from { width: 0; opacity: 0; }
  to { width: 56px; opacity: 1; }
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-h);
  padding-bottom: 60px;
  background: var(--surface-container-low);
  display: flex;
  align-items: center;
  box-sizing: border-box;
}
.hero-layout {
  display: flex;
  align-items: center;
  gap: 56px;
  width: 100%;
}
.hero-text { flex: 1; min-width: 0; }
.hero-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: 20px;
}
.hero-text h1 {
  font-family: var(--serif);
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-accent {
  color: var(--primary);
  font-style: italic;
}
.hero-bio {
  font-size: 0.95rem;
  color: var(--on-surface-variant);
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 540px;
}
.hero-bio:last-of-type { margin-bottom: 28px; }
.hero-bio strong { color: var(--on-surface); font-weight: 600; }
.hero-social {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.hero-social a {
  color: var(--on-surface-variant);
  transition: color 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--surface-container);
}
.hero-social a svg {
  width: 20px;
  height: 20px;
}
.hero-social a:hover {
  color: var(--primary);
  background: var(--primary-container);
  transform: translateY(-2px);
}

.hero-photo { flex-shrink: 0; }
.hero-photo img {
  width: 340px;
  height: 440px;
  object-fit: cover;
  object-position: top;
  border-radius: 20px;
}

/* --- Section Headings --- */
.section-heading {
  font-family: var(--serif);
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0;
}
.section-heading em {
  font-style: italic;
  color: var(--primary);
}
.heading-underline {
  width: 56px;
  height: 4px;
  background: var(--secondary);
  border-radius: 2px;
  margin-top: 16px;
  margin-bottom: 48px;
}

/* --- Expertise --- */
.section-expertise {
  padding: 100px 0;
  background: var(--surface);
}
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.expertise-card--wide {
  grid-column: 1 / -1;
}
.expertise-card--wide .expertise-keywords {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px 24px;
}
.expertise-card {
  background: var(--surface-container-lowest);
  padding: 40px 32px;
  border-radius: 16px;
  border: 1px solid var(--outline-variant);
  transition: transform 0.3s, box-shadow 0.3s;
  opacity: 0;
  transform: translateY(24px);
  position: relative;
  display: flex;
  flex-direction: column;
}
.expertise-card.in-view {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s;
}
.expertise-card:nth-child(2).in-view { transition-delay: 0.08s; }
.expertise-card:nth-child(3).in-view { transition-delay: 0.16s; }
.expertise-card:nth-child(4).in-view { transition-delay: 0.24s; }
.expertise-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 56px rgba(0,0,0,0.05);
}

/* Highlighted center card */
.expertise-card--highlight {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.expertise-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 24px;
}
.expertise-icon--secondary {
  color: var(--secondary);
}
.expertise-card--highlight .expertise-icon {
  color: var(--on-primary);
}

.expertise-card h3 {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
  font-style: italic;
  margin-bottom: 16px;
}
.expertise-card--highlight h3 {
  color: var(--primary-container);
}

.expertise-desc {
  font-size: 0.9rem;
  color: var(--on-surface-variant);
  line-height: 1.7;
  margin-bottom: 0;
}
.expertise-card--highlight .expertise-desc {
  color: rgba(255,255,255,0.85);
}

/* Divider line */
.expertise-divider {
  width: 100%;
  height: 1px;
  background: var(--outline-variant);
  margin: 24px 0;
}

/* Keyword bullets */
.expertise-keywords {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}
.expertise-keywords li {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}
.expertise-keywords li::before {
  content: '\2022';
  margin-right: 10px;
}
.expertise-keywords--secondary li {
  color: var(--secondary);
}

/* Stat boxes for highlighted card */
.expertise-stats {
  display: flex;
  gap: 16px;
  margin-top: auto;
  padding-top: 28px;
}
.expertise-stat {
  flex: 1;
  background: rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 20px 16px;
  text-align: left;
}
.stat-value {
  display: block;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

/* --- Work / The Journey --- */
.section-work {
  padding: 100px 0;
  background: var(--surface-container-low);
}
.section-heading--center {
  text-align: center;
}
.section-sub {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
  margin-bottom: 64px;
}

/* Work cards — image with overlapping accent panel */
.work-card {
  position: relative;
  display: flex;
  align-items: stretch;
  margin-bottom: 72px;
  opacity: 0;
  transform: translateY(24px);
}
.work-card.in-view {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.work-card:nth-child(3).in-view { transition-delay: 0.08s; }
.work-card:nth-child(4).in-view { transition-delay: 0.16s; }
.work-card:nth-child(5).in-view { transition-delay: 0.24s; }

.work-card-img {
  flex: 1.2;
  min-width: 0;
  border-radius: 20px;
  overflow: hidden;
  background: var(--surface-container);
}
.work-card-img img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.work-card:hover .work-card-img img {
  transform: scale(1.03);
}

.work-card-panel {
  position: relative;
  flex: 0.8;
  min-width: 280px;
  background: var(--surface-container-lowest);
  padding: 48px 44px;
  border-radius: 16px;
  margin-left: -48px;
  margin-top: 32px;
  margin-bottom: 32px;
  align-self: center;
  z-index: 2;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: box-shadow 0.3s, transform 0.3s;
}
.work-card-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: var(--primary);
  border-radius: 4px 0 0 4px;
}
/* Secondary accent — gold/terracotta border */
.work-card-panel--secondary::before {
  background: var(--secondary);
}
.work-card:hover .work-card-panel {
  box-shadow: 0 24px 64px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

/* Reverse layout */
.work-card--reverse {
  flex-direction: row-reverse;
}
.work-card--reverse .work-card-panel {
  margin-left: 0;
  margin-right: -48px;
}
.work-card--reverse .work-card-panel::before {
  left: auto;
  right: 0;
  border-radius: 0 4px 4px 0;
}

.work-card-panel h3 {
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  transition: color 0.2s;
}
.work-card:hover .work-card-panel h3 {
  color: var(--primary);
}
.work-card-role {
  font-size: 0.92rem;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 24px;
}
.work-card-desc {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--on-surface-variant);
  line-height: 1.65;
  font-style: italic;
  margin-bottom: 28px;
}

/* Tag chips */
.work-card-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.work-tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 8px 16px;
  background: var(--surface-container-low);
  border-radius: 6px;
  color: var(--on-surface);
  transition: background 0.2s;
}
.work-card:hover .work-tag {
  background: var(--surface-container);
}

/* Previous organizations */
.work-previous {
  text-align: center;
  padding-top: 24px;
}
.work-previous-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
  margin-bottom: 32px;
}
.work-previous-list {
  display: flex;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
}
.work-prev-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
  opacity: 0;
  transform: translateY(16px);
}
.work-prev-item.in-view {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.2s;
}
.work-prev-item:nth-child(2).in-view { transition-delay: 0.08s; }
.work-prev-item:nth-child(3).in-view { transition-delay: 0.16s; }
.work-prev-name {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.01em;
}
.work-prev-detail {
  font-size: 0.72rem;
  color: var(--outline);
  max-width: 200px;
  text-align: center;
}
.work-prev-item:hover { color: var(--primary); }

/* --- Contact --- */
.section-contact {
  padding: 100px 0;
  background: var(--surface);
}
.contact-layout {
  display: flex;
  gap: 0;
  align-items: stretch;
  border-radius: 20px;
  overflow: hidden;
}

/* Left CTA panel — red background */
.contact-cta {
  flex: 0.9;
  min-width: 0;
  background: var(--primary);
  color: var(--on-primary);
  padding: 56px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  transform: translateY(24px);
}
.contact-cta.in-view {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.contact-heading {
  font-family: var(--serif);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--on-primary);
}
.contact-heading em {
  font-style: italic;
}
.contact-subtitle {
  font-size: 0.92rem;
  line-height: 1.6;
  opacity: 0.85;
  margin-bottom: 0;
}

/* Right form panel */
.contact-form {
  flex: 1.1;
  min-width: 0;
  background: var(--surface-container-lowest);
  padding: 48px 48px;
  opacity: 0;
  transform: translateY(24px);
}
.contact-form.in-view {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease 0.1s, transform 0.5s ease 0.1s;
}
.form-row {
  display: flex;
  gap: 16px;
}
.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
}
.form-group label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--outline);
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 14px 0;
  border: none;
  border-bottom: 2px solid var(--outline-variant);
  border-radius: 0;
  font-family: var(--sans);
  font-size: 0.95rem;
  background: transparent;
  color: var(--on-surface);
  transition: border-color 0.2s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.contact-form select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2374777f' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 4px center;
  padding-right: 24px;
}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-bottom-color: var(--primary);
}
.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}
.btn-submit {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  padding: 18px 36px;
  border-radius: 12px;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
  width: 100%;
  margin-top: 8px;
}
.btn-submit:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* --- Footer --- */
.footer {
  background: var(--surface-container-low);
  color: var(--on-surface);
  padding: 64px 0 48px;
  border-top: 4px solid var(--primary);
}
.footer-inner {
  display: flex;
  gap: 64px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col:first-child { margin-right: auto; }
.footer-avatar { border-radius: 12px; }
.footer-copy {
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--outline);
  margin-top: 8px;
  font-style: italic;
}
.footer-col h4 {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary);
  margin-bottom: 4px;
}
.footer-col a {
  font-size: 0.88rem;
  color: var(--on-surface);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--primary); }

/* --- Responsive --- */
@media (max-width: 900px) {
  .intro-name { font-size: 4rem; }
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-h) + 40px);
  }
  .hero-layout {
    flex-direction: column-reverse;
    text-align: center;
    gap: 32px;
  }
  .hero-text h1 { font-size: 3rem; }
  .hero-bio { max-width: 100%; }
  .hero-social { justify-content: center; }
  .hero-photo {
    display: flex;
    justify-content: center;
  }
  .hero-photo img {
    width: 260px;
    height: 340px;
  }
  .expertise-grid { grid-template-columns: 1fr; }
  .work-card { flex-direction: column; }
  .work-card--reverse { flex-direction: column; }
  .work-card-panel {
    margin-left: 20px;
    margin-right: 20px;
    margin-top: -32px;
    margin-bottom: 0;
    padding: 36px 28px;
  }
  .work-card--reverse .work-card-panel {
    margin-left: 20px;
    margin-right: 20px;
  }
  .work-card-panel h3 { font-size: 2rem; }
  .work-card-desc { font-size: 0.95rem; }
  .work-card-img img { height: 240px; }
  .work-previous-list { gap: 32px; }
  .contact-layout {
    flex-direction: column;
    border-radius: 20px;
  }
  .footer-inner { flex-direction: column; gap: 32px; }
  .footer-col:first-child { margin-right: 0; }
}

@media (max-width: 640px) {
  .intro-name { font-size: 3.2rem; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(249, 249, 246, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .hero-text h1 { font-size: 2.4rem; }
  .section-heading { font-size: 1.8rem; }
  .contact-heading { font-size: 1.8rem; }
  .form-row { flex-direction: column; }
  .work-card-panel h3 { font-size: 1.6rem; }
  .work-prev-name { font-size: 1.4rem; }
  .contact-cta { padding: 40px 32px; }
  .contact-form { padding: 40px 32px; }
  .contact-heading { font-size: 2rem; }
  .section-expertise,
  .section-work,
  .section-contact { padding: 64px 0; }
}