/* ─────────────────────────────────────────────
   Diego Costa — Personal Website
   Palette: Warm cream / slate / terracotta accent
   ───────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,700;1,400;1,500&family=DM+Sans:wght@300;400;500&family=DM+Mono:wght@400&display=swap');

:root {
  --cream:       #F7F4EE;
  --cream-dark:  #EDE8DF;
  --slate:       #2C2F35;
  --slate-mid:   #4A4F59;
  --slate-light: #8A8F9A;
  --accent:      #C4724A;   /* terracotta */
  --accent-soft: #E8C4AF;
  --white:       #FFFFFF;
  --border:      #DDD7CC;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'DM Mono', monospace;

  --nav-h: 72px;
  --max-w: 1100px;
  --reading-w: 720px;
}

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

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

body {
  background-color: var(--cream);
  color: var(--slate);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  color: var(--slate);
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.1rem; letter-spacing: 0.05em; }

p { font-size: 1.05rem; color: var(--slate-mid); max-width: 65ch; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.75rem;
}

/* ── Layout helpers ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.reading-col {
  max-width: var(--reading-w);
}

section { padding: 6rem 0; }

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(247, 244, 238, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--slate);
  letter-spacing: -0.02em;
}

.nav__logo span { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav__links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--slate-mid);
  transition: color 0.2s;
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0; right: 100%;
  height: 1px;
  background: var(--accent);
  transition: right 0.25s ease;
}

.nav__links a:hover { color: var(--slate); }
.nav__links a:hover::after { right: 0; }
.nav__links a.active { color: var(--slate); }
.nav__links a.active::after { right: 0; }

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--slate);
  transition: all 0.3s;
}

/* ── Page header offset ── */
.page-offset { padding-top: var(--nav-h); }

/* ── Hero ── */
.hero {
  padding: calc(var(--nav-h) + 5rem) 0 5rem;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 6rem;
  align-items: center;
}

.hero__kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero__title {
  margin-bottom: 1.5rem;
  color: var(--slate);
}

.hero__title em {
  font-style: italic;
  color: var(--accent);
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--slate-mid);
  margin-bottom: 2.5rem;
  max-width: 52ch;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.tag {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 2rem;
  color: var(--slate-mid);
  background: var(--white);
}

.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--slate);
  color: var(--white);
  border-color: var(--slate);
}
.btn--primary:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.btn--ghost {
  background: transparent;
  color: var(--slate);
  border-color: var(--border);
}
.btn--ghost:hover {
  border-color: var(--slate);
}

/* ── Photo card (hero) ── */
.hero__photo-wrap {
  position: relative;
}

.hero__photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(44,47,53,0.15);
}

.hero__photo-caption {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  font-size: 0.8rem;
  color: var(--slate-mid);
  max-width: 180px;
  box-shadow: 0 8px 24px rgba(44,47,53,0.08);
}

.hero__photo-caption strong {
  display: block;
  font-weight: 500;
  color: var(--slate);
  margin-bottom: 0.2rem;
  font-family: var(--font-display);
}

/* ── Intro strip ── */
.intro-strip {
  background: var(--slate);
  color: var(--cream);
  padding: 5rem 0;
}

.intro-strip .eyebrow { color: var(--accent-soft); }

.intro-strip h2 {
  color: var(--cream);
  margin-bottom: 1.5rem;
}

.intro-strip p {
  color: rgba(247,244,238,0.75);
  max-width: 60ch;
}

/* ── Cards ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(44,47,53,0.1);
}

.card__img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.card__img--placeholder {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--cream-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.card__body { padding: 1.5rem; }
.card__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
  display: block;
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}
.card__text { font-size: 0.95rem; color: var(--slate-mid); }

/* ── Life section ── */
.life-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.life-panel {
  padding: 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.life-panel:nth-child(odd) { background: var(--cream-dark); }
.life-panel:nth-child(even) { background: var(--white); }

.life-panel__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.life-panel__photo {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: 3px;
  margin-top: 0.5rem;
}

/* ── Quote block ── */
.quote-block {
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
}

.quote-block p {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--slate);
}

/* ── Skills / tech ── */
.skill-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-list li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.4rem 0.9rem;
  background: var(--cream-dark);
  border: 1px solid var(--border);
  border-radius: 2rem;
  color: var(--slate-mid);
}

/* ── Timeline ── */
.timeline { list-style: none; }

.timeline__item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

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

.timeline__year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  padding-top: 0.2rem;
}

.timeline__content h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
}

.timeline__content span {
  font-size: 0.85rem;
  color: var(--slate-light);
  display: block;
  margin-bottom: 0.5rem;
}

.timeline__content p {
  font-size: 0.95rem;
}

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-links { list-style: none; display: flex; flex-direction: column; gap: 1rem; }

.contact-links a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--slate-mid);
  transition: color 0.2s;
}

.contact-links a:hover { color: var(--accent); }

.contact-links .link-icon {
  width: 36px; height: 36px;
  background: var(--cream-dark);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* ── Blog list ── */
.post-list { list-style: none; }

.post-item {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
}

.post-item:first-child { border-top: 1px solid var(--border); }

.post-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--slate-light);
  padding-top: 0.3rem;
}

.post-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  transition: color 0.2s;
}

.post-item:hover .post-title { color: var(--accent); }

/* ── Footer ── */
.footer {
  background: var(--slate);
  color: rgba(247,244,238,0.6);
  padding: 3rem 0;
  font-size: 0.85rem;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--cream);
}

.footer__links { display: flex; gap: 1.5rem; list-style: none; }
.footer__links a { color: rgba(247,244,238,0.6); transition: color 0.2s; }
.footer__links a:hover { color: var(--cream); }

/* ── Page hero (inner pages) ── */
.page-hero {
  padding: calc(var(--nav-h) + 4rem) 0 4rem;
  background: var(--cream-dark);
  border-bottom: 1px solid var(--border);
}

/* ── Utilities ── */
.mt-sm  { margin-top: 1rem; }
.mt-md  { margin-top: 2rem; }
.mt-lg  { margin-top: 3rem; }
.mb-sm  { margin-bottom: 1rem; }
.mb-md  { margin-bottom: 2rem; }
.mb-lg  { margin-bottom: 3rem; }
.text-accent { color: var(--accent); }
.font-display { font-family: var(--font-display); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__photo-wrap { display: none; }
  .life-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .timeline__item { grid-template-columns: 1fr; gap: 0.25rem; }
  .post-item { grid-template-columns: 1fr; gap: 0.25rem; }
}

@media (max-width: 680px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: var(--cream);
    padding: 2rem;
    gap: 1.5rem;
    align-items: flex-start;
    border-top: 1px solid var(--border);
    z-index: 99;
  }
  .nav__links.open a { font-size: 1.1rem; }
  section { padding: 4rem 0; }
  .life-panel { padding: 2.5rem 1.5rem; }
  .card-grid { grid-template-columns: 1fr; }
}

/* ── Print ── */
@media print {
  .nav, .hero__cta, .footer { display: none; }
}