/* =========================================================
   Sebastián Bramchtein · Personal portfolio
   Editorial aesthetic. Warm cream + deep ink + terracotta.
   ========================================================= */

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

:root {
  /* Palette */
  --bg: #F4EFE6;
  --bg-soft: #ECE5D6;
  --ink: #1B1815;
  --ink-soft: #4A4540;
  --ink-mute: #8C8579;
  --line: #D9D2C2;
  --accent: #B5512E;
  --accent-soft: #C76B45;

  /* Type */
  --display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --body: 'Manrope', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;
  --space-8: 12rem;

  --max-width: 1280px;
  --reading-width: 720px;
}

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

body {
  font-family: var(--body);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ----- Grain texture overlay ----- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.04;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ----- Selection ----- */
::selection {
  background: var(--accent);
  color: var(--bg);
}

/* ----- Links base ----- */
a {
  color: inherit;
  text-decoration: none;
}

/* =========================================================
   HEADER
   ========================================================= */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-3);
  padding: 1.25rem 2rem;
  background: rgba(244, 239, 230, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
}

.logo-mark {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.site-nav {
  justify-self: center;
  display: flex;
  gap: 2rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav a {
  color: var(--ink-soft);
  transition: color 0.2s ease;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.lang-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  display: flex;
  gap: 0.4rem;
  align-items: center;
  padding: 0.4rem 0.6rem;
  transition: color 0.2s ease;
}

.lang-toggle .lang-sep {
  opacity: 0.4;
}

.lang-toggle .lang-en,
.lang-toggle .lang-es {
  transition: opacity 0.2s ease;
}

body[data-lang="en"] .lang-en {
  color: var(--ink);
  font-weight: 500;
}
body[data-lang="en"] .lang-es {
  opacity: 0.4;
}
body[data-lang="es"] .lang-es {
  color: var(--ink);
  font-weight: 500;
}
body[data-lang="es"] .lang-en {
  opacity: 0.4;
}

.lang-toggle:hover .lang-en,
.lang-toggle:hover .lang-es {
  opacity: 1;
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  min-height: 100vh;
  padding: 8rem 2rem 5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: var(--space-4);
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  text-transform: uppercase;
  padding-top: var(--space-3);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(4rem, 16vw, 16rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--ink);
  font-variation-settings: "opsz" 144, "SOFT" 50;
  margin-top: var(--space-3);
}

.hero-line {
  display: block;
}

.hero-italic {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
  margin-left: clamp(1rem, 5vw, 4rem);
}

.hero-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-top: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
}

.hero-tagline {
  font-family: var(--display);
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.hero-intro {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 38ch;
}

.hero-arrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  align-self: end;
  justify-self: start;
  padding: 0.5rem 0;
  transition: color 0.2s ease, gap 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.hero-arrow:hover {
  color: var(--accent);
  gap: 1rem;
}

.hero-arrow svg {
  transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}

.hero-arrow:hover svg {
  transform: translateY(3px);
}

/* =========================================================
   SECTIONS · common
   ========================================================= */

section {
  padding: var(--space-7) 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.section-num {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
}

.section-title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variation-settings: "opsz" 144, "SOFT" 30;
}

.section-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 300;
}

.section-sub {
  grid-column: 2;
  font-size: 1rem;
  color: var(--ink-soft);
  margin-top: var(--space-2);
  max-width: 50ch;
}

/* =========================================================
   WORK · case studies
   ========================================================= */

.work {
  /* nothing extra */
}

.case {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-5);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--line);
}

.case:last-child {
  border-bottom: none;
}

.case-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: sticky;
  top: 6rem;
  align-self: start;
}

.case-num {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 500;
}

.case-tags {
  color: var(--ink-soft);
}

.case-year {
  color: var(--ink-mute);
}

.case-title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: var(--space-2);
  font-variation-settings: "opsz" 144, "SOFT" 30;
}

.case-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 300;
}

.case-role {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--ink-soft);
  margin-bottom: var(--space-3);
  letter-spacing: 0.02em;
}

.case-summary {
  font-family: var(--display);
  font-size: 1.5rem;
  line-height: 1.4;
  color: var(--ink);
  font-weight: 300;
  margin-bottom: var(--space-4);
  max-width: 45ch;
  font-variation-settings: "opsz" 60, "SOFT" 40;
}

.case-numbers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0;
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.case-number {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.case-number-value {
  font-family: var(--display);
  font-style: italic;
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 60;
}

.case-number-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.case-detail {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.case-detail h4 {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.case-detail p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 65ch;
}

.case-detail em {
  color: var(--ink);
  font-style: italic;
}

/* =========================================================
   IMAGES IN CASES
   ========================================================= */

/* Hero image — landscape (default), spans full width of case-body */
.case-hero {
  margin: 0 0 var(--space-4) 0;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.case-hero img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.case-hero:hover img {
  transform: scale(1.015);
}

/* Hero image — portrait variant: contained, centered */
.case-hero--portrait {
  display: flex;
  justify-content: center;
  background: var(--bg-soft);
  padding: var(--space-3);
}

.case-hero--portrait img {
  max-width: 480px;
  width: 100%;
  height: auto;
}

.case-hero--portrait:hover img {
  transform: none;
}

/* Inline image inside case-detail (portrait or landscape) */
.case-image {
  margin: var(--space-3) 0 var(--space-4);
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.case-image img {
  width: 100%;
  height: auto;
  display: block;
}

.case-image--portrait {
  display: flex;
  justify-content: center;
  padding: var(--space-3);
}

.case-image--portrait img {
  max-width: 420px;
  width: 100%;
}

/* Wordmark — for displaying brand logos as a separate piece.
   The image carries its own background colour, so we don't add extra padding/bg. */
.case-wordmark {
  margin: var(--space-3) 0 var(--space-3);
  display: block;
  overflow: hidden;
}

.case-wordmark img {
  width: 100%;
  max-width: 720px;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Modifier classes are kept as semantic hooks but no longer add visual weight. */
.case-wordmark--dark,
.case-wordmark--brown {
  /* intentionally empty — colour comes from the image itself */
}

/* On mobile, reduce padding and image sizes */
@media (max-width: 700px) {
  .case-hero--portrait,
  .case-image--portrait,
  .case-wordmark {
    padding: var(--space-2);
  }

  .case-hero--portrait img {
    max-width: 100%;
  }

  .case-image--portrait img {
    max-width: 100%;
  }
}

/* =========================================================
   THINKING
   ========================================================= */

.thinking {
  background: var(--bg-soft);
  max-width: none;
  margin: 0;
  padding-left: max(2rem, calc((100vw - var(--max-width)) / 2 + 2rem));
  padding-right: max(2rem, calc((100vw - var(--max-width)) / 2 + 2rem));
}

.thinking-body {
  max-width: var(--reading-width);
  margin: 0 auto;
  text-align: center;
}

.thinking-status {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.thinking-title {
  font-family: var(--display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 144, "SOFT" 60;
}

.thinking-lead {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: var(--space-3);
  font-variation-settings: "opsz" 60, "SOFT" 30;
}

.thinking-text {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* =========================================================
   ABOUT
   ========================================================= */

.about-body {
  max-width: var(--reading-width);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.about-body p:first-child {
  font-size: 1.375rem;
  line-height: 1.55;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 300;
  font-variation-settings: "opsz" 60, "SOFT" 30;
}

/* =========================================================
   CONTACT
   ========================================================= */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: var(--space-3);
  border: 1px solid var(--line);
  background: transparent;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.contact-item:hover {
  background: var(--bg-soft);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.contact-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.contact-value {
  font-family: var(--display);
  font-size: 1.25rem;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: -0.01em;
}

.contact-cv .contact-value {
  color: var(--accent);
  font-style: italic;
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  padding: var(--space-4) 2rem;
  text-align: center;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
}

.footer-sep {
  margin: 0 0.6rem;
  opacity: 0.5;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {
  .site-header {
    padding: 1rem 1.25rem;
    grid-template-columns: auto auto;
    grid-template-rows: auto auto;
    gap: 0.75rem;
  }

  .site-nav {
    grid-column: 1 / -1;
    justify-self: start;
    gap: 1.25rem;
    font-size: 0.7rem;
  }

  .lang-toggle {
    grid-column: 2;
    grid-row: 1;
    padding: 0.25rem 0.4rem;
  }

  .hero {
    padding: 6.5rem 1.25rem 3rem;
    gap: var(--space-3);
  }

  .hero-italic {
    margin-left: 1rem;
  }

  .hero-meta {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  section {
    padding: var(--space-5) 1.25rem;
  }

  .thinking {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .section-header {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .section-num {
    grid-row: 1;
  }

  .section-sub {
    grid-column: 1;
  }

  .case {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    padding: var(--space-4) 0;
  }

  .case-meta {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .case-summary {
    font-size: 1.25rem;
  }

  .case-number-value {
    font-size: 2rem;
  }
}

@media (max-width: 500px) {
  .hero-title {
    font-size: 4rem;
  }

  .case-title,
  .section-title {
    font-size: 2.25rem;
  }

  .hero-tagline {
    font-size: 1.375rem;
  }
}

/* =========================================================
   ENTRY ANIMATIONS
   ========================================================= */

.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

.hero .fade-up:nth-child(1) { transition-delay: 0.1s; }
.hero .fade-up:nth-child(2) { transition-delay: 0.2s; }
.hero .fade-up:nth-child(3) { transition-delay: 0.4s; }
.hero .fade-up:nth-child(4) { transition-delay: 0.7s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .fade-up {
    opacity: 1;
    transform: none;
  }
}