/*
  Jeffrey de Campos Cardoso — website stylesheet
  Static, dependency-free CSS. System font stack only, no external fonts.
*/

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul[class], ol[class] { list-style: none; padding: 0; }
.nav ul, .footer-nav ul { list-style: none; padding: 0; margin: 0; }
img, picture { max-width: 100%; display: block; }
input, button, textarea, select { font: inherit; }

:root {
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --color-bg: #eff3fa;
  --color-bg-alt: #dce6f5;
  --color-surface: #ffffff;
  --color-text: #081428;
  --color-text-muted: #3e5170;

  --color-primary: #073b8c;
  --color-primary-dark: #001b4d;
  --color-primary-light: #0f5fcc;
  --color-primary-contrast: #ffffff;

  --color-accent: #0f5fcc;
  --color-accent-dark: #073b8c;

  --color-border: #c7d6ec;
  --color-border-strong: #a8c0e3;

  --radius: 8px;
  --radius-sm: 4px;
  --container-w: 1120px;
  --measure: 68ch;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --space-7: 6rem;

  --shadow-sm: 0 1px 3px rgba(0, 27, 77, 0.08);
  --shadow-md: 0 6px 20px rgba(0, 27, 77, 0.10);
  --shadow-lg: 0 16px 40px rgba(0, 27, 77, 0.16);
  --transition: 180ms ease;
}

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 1.0625rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

main { flex: 1 0 auto; }

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  text-wrap: balance;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 1.5rem + 2vw, 2.95rem); margin-bottom: var(--space-3); }
h2 { font-size: clamp(1.45rem, 1.25rem + 0.9vw, 1.95rem); margin-bottom: var(--space-2); }
h3 { font-size: 1.2rem; margin-bottom: var(--space-1); }
h4 { font-size: 1.05rem; margin-bottom: var(--space-1); }

p { margin-bottom: var(--space-2); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}
a:hover { color: var(--color-primary-light); }

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.site-header a:focus-visible,
.site-header button:focus-visible,
.site-footer a:focus-visible {
  outline-color: #ffffff;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -3rem;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top var(--transition);
}
.skip-link:focus { top: var(--space-2); }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.measure { max-width: var(--measure); }

.section {
  padding-block: var(--space-6);
}
.section--alt { background: var(--color-bg-alt); }
.section--tight { padding-block: var(--space-4); }

.stack > * + * { margin-top: var(--space-3); }

.eyebrow {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent-dark);
  text-transform: uppercase;
  font-size: 0.78rem;
  margin-bottom: var(--space-1);
}

/* ---------- Header ---------- */
.site-header {
  background: var(--color-primary);
  border-bottom: 1px solid var(--color-primary-dark);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-block: var(--space-2);
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  margin-right: auto;
  transition: transform var(--transition);
}
.brand:hover { transform: translateY(-1px); }
.logo-badge {
  display: inline-flex;
  align-items: center;
  background: #ffffff;
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}
.logo-badge img {
  height: 30px;
  width: auto;
  display: block;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  padding: 0.2rem 0.35rem;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 999px;
}
.lang-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.5rem;
  line-height: 1;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.lang-link:hover { background: rgba(255, 255, 255, 0.12); }
.lang-link[aria-current="true"] {
  background: rgba(0, 0, 0, 0.22);
}
.lang-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #8a9ab3;
  transition: color var(--transition);
}
.lang-link:hover .lang-text,
.lang-link[aria-current="true"] .lang-text {
  color: #ffffff;
}
.lang-flag { display: none; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  color: #ffffff;
  font-size: 0.95rem;
}
.nav-toggle:hover { border-color: #ffffff; }

.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}

.nav a {
  display: inline-block;
  padding: 0.35rem 0.1rem;
  color: #dfe6ee;
  text-decoration: none;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.nav a:hover { color: #ffffff; border-bottom-color: rgba(255, 255, 255, 0.4); }
.nav a[aria-current="page"] { color: #ffffff; border-bottom-color: var(--color-accent); }

@media (max-width: 640px) {
  .header-inner { gap: var(--space-1) var(--space-2); }
  .logo-badge { padding: 5px 10px; }
  .logo-badge img { height: 24px; }
  .nav-toggle:not([hidden]) { display: inline-flex; }
  .nav-toggle:not([hidden]) + #primary-nav {
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .nav-toggle[aria-expanded="true"] + #primary-nav { max-height: 20rem; }
  .nav-toggle:not([hidden]) + #primary-nav ul {
    flex-direction: column;
    gap: 0;
    padding-block: var(--space-2);
  }
  .nav-toggle:not([hidden]) + #primary-nav a { display: block; padding: 0.6rem 0.1rem; }
}

@media (max-width: 380px) {
  .header-inner { gap: var(--space-1); }
  .logo-badge { padding: 4px 8px; }
  .logo-badge img { height: 20px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 30rem;
  padding-block: var(--space-6) var(--space-5);
  background-image: linear-gradient(100deg, rgba(0, 27, 77, 0.92) 0%, rgba(0, 27, 77, 0.74) 40%, rgba(0, 27, 77, 0.28) 72%), url('/images/hero-bg.jpg');
  background-size: cover;
  background-position: center right;
}

.hero-content { max-width: 34rem; }

.hero-role {
  font-size: 1.1rem;
  color: #d7e6fb;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.hero h1 { color: #ffffff; }
.hero .measure { color: #e7f0fc; }

.hero .btn--outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}
.hero .btn--outline:hover {
  border-color: #ffffff;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
}

@media (max-width: 860px) {
  /* Phones/tablets: lighter photo as a band at the top, fading into the navy
     background; the text sits below it so the face stays fully visible */
  .hero {
    --hero-img-h: min(81.4vw, 700px);
    display: block;
    min-height: 0;
    padding-top: calc(var(--hero-img-h) - 3.5rem);
    padding-bottom: var(--space-5);
    background-color: #001b4d;
    background-image: linear-gradient(180deg, rgba(0, 27, 77, 0) 0%, rgba(0, 27, 77, 0) 45%, rgba(0, 27, 77, 0.7) 80%, #001b4d 100%), url('/images/hero-bg-mobile.jpg');
    background-size: 100% calc(var(--hero-img-h) + 2px), 100% auto;
    background-position: top center;
    background-repeat: no-repeat;
  }
  .hero-content { max-width: none; }
}

/* ---------- Buttons / CTA ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-primary-light); color: var(--color-primary-contrast); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn--outline {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.btn--outline:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-1px); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.btn-row--center { justify-content: center; margin-top: 0; }

.cta-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-primary-contrast);
  padding-block: var(--space-4);
  text-align: center;
}
.cta-band .btn--primary {
  background: #ffffff;
  color: var(--color-primary-dark);
}
.cta-band .btn--primary:hover { background: var(--color-bg-alt); }

/* ---------- Cards / grids ---------- */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.card-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
}

.card h3 { margin-bottom: var(--space-1); }
.card p { color: var(--color-text-muted); flex: 1 0 auto; }
.card .card-link { margin-top: var(--space-2); font-weight: 600; display: inline-block; }

/* Expertise cards: number, title, text and link share row tracks across the
   grid, so the case links sit on one horizontal line (flex layout = fallback) */
@supports (grid-template-rows: subgrid) {
  .pillar-grid { gap: 0 var(--space-3); }
  .pillar-grid .card {
    display: grid;
    grid-row: span 4;
    grid-template-rows: subgrid;
    row-gap: 0;
    height: auto;
    margin-bottom: var(--space-3);
  }
  .pillar-grid .card .card-number { justify-self: start; }
  .pillar-grid .card .card-link { align-self: start; justify-self: start; }
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.case-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.case-card h3 { margin-bottom: 0; }
.case-card h3 a { color: var(--color-text); text-decoration: none; }
.case-card h3 a:hover { color: var(--color-primary); }
.case-card p { color: var(--color-text-muted); margin-bottom: 0; }
.case-card .card-link { margin-top: auto; font-weight: 600; }

.mini-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.mini-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
}
.mini-card h4 { margin-bottom: 0.35rem; }
.mini-card p { color: var(--color-text-muted); margin-bottom: 0; font-size: 0.97rem; }

/* ---------- Client logo strip (homepage) ---------- */
.client-strip {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-strong);
}
.client-strip > p:first-child {
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  text-align: center;
}
.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}
@media (min-width: 480px) {
  .logo-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 768px) {
  .logo-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }
}
@media (min-width: 980px) {
  .logo-grid { grid-template-columns: repeat(6, 1fr); }
}

.logo-tile {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
a.logo-tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--color-border-strong); }

.logo-tile .logo-frame {
  height: 3.5rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-tile img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
/* Grayscale-to-color reveal only on devices with real hover (mouse/trackpad).
   Touch devices show full color right away, since :hover there needs a tap first. */
@media (hover: hover) and (pointer: fine) {
  .logo-tile img {
    filter: grayscale(1);
    opacity: 0.72;
    transition: filter var(--transition), opacity var(--transition);
  }
  .logo-tile:hover img, .logo-tile:focus-visible img {
    filter: grayscale(0);
    opacity: 1;
  }
}

/* ---------- Case detail pages ---------- */
.breadcrumbs {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.breadcrumbs a { color: var(--color-text-muted); }
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs [aria-current="page"] { color: var(--color-text); }

.case-detail h2 {
  margin-top: var(--space-5);
}
.case-detail ul {
  list-style: disc;
  padding-left: 1.3rem;
}
.case-detail ul li { margin-bottom: 0.5rem; }
.case-detail ul li:last-child { margin-bottom: 0; }

/* Archive/evidence block inside a service card */
.archive-block {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}
.archive-block h3 { font-size: 1.05rem; margin-bottom: var(--space-1); }
.archive-block p { font-size: 0.97rem; }

.result-box {
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-3);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: var(--space-2);
}

.case-figure {
  max-width: 26rem;
  margin: var(--space-3) 0;
}
.case-figure a {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.case-figure a:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.case-figure img {
  width: 100%;
  height: auto;
  display: block;
}
.case-figure figcaption {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.source-list {
  list-style: none;
  padding-left: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}
.source-list li { margin-bottom: 0.35rem; }

.case-nav-link {
  display: inline-block;
  margin-top: var(--space-4);
  font-weight: 600;
}

/* ---------- About page ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--space-5);
  align-items: start;
}
.about-grid img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: auto;
}
@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-grid figure { max-width: 20rem; margin-inline: auto; }
}

/* ---------- Contact ---------- */
.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 24rem), 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.contact-method {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}
.contact-method h3 { margin-bottom: 0.4rem; }
.contact-method a { font-weight: 600; word-break: break-word; }
/* LinkedIn address stays on one line: scale with the available width on phones */
.contact-method a.contact-linkedin { white-space: nowrap; word-break: normal; }
@media (max-width: 640px) {
  .contact-method { padding: var(--space-2); }
  .contact-method a.contact-linkedin { font-size: min(1.0625rem, calc((100vw - 5.25rem) / 20)); }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary-dark);
  color: #c4d0dd;
  padding-block: var(--space-4);
  margin-top: var(--space-6);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}
.footer-inner a { color: #c4d0dd; }
.footer-inner a:hover { color: #ffffff; }
.footer-nav ul { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-2); }

/* ---------- 404 ---------- */
.error-page {
  text-align: center;
  padding-block: var(--space-7);
}
.error-page .btn-row { justify-content: center; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Cookie notice ---------- */
.footer-inner .link-button {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: #c4d0dd;
  text-decoration: underline;
  cursor: pointer;
}
.footer-inner .link-button:hover { color: #ffffff; }

.cookie-banner {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 100;
  background: var(--color-primary-dark);
  color: #e7f0fc;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.25);
  padding-block: var(--space-2);
}
.cookie-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  justify-content: space-between;
}
.cookie-inner p { margin: 0; flex: 1 1 22rem; font-size: 0.95rem; }
.cookie-inner a { color: #ffffff; text-decoration: underline; }
.cookie-actions { display: flex; gap: var(--space-2); flex: 0 0 auto; }
.cookie-btn {
  min-width: 7.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid #ffffff;
  background: #ffffff;
  color: var(--color-primary-dark);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.cookie-btn:hover { background: var(--color-bg-alt); }
.cookie-btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 2px; }
@media (max-width: 480px) {
  .cookie-actions { width: 100%; }
  .cookie-btn { flex: 1; }
}
.small { font-size: 0.9rem; color: var(--color-text-muted); }