/* ============================================
   Barna CFO — Professional Website
   Brand: Oxanium typeface, #212121 charcoal
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7f5;
  --color-bg-dark: #121212;
  --color-text: #212121;
  --color-text-muted: #5a5a5a;
  --color-text-inverse: #f7f7f5;
  --color-border: #e6e6e3;
  --color-accent: #212121;
  --color-accent-hover: #000000;
  --color-link: #212121;
  --shadow-sm: 0 2px 8px rgba(33, 33, 33, 0.06);
  --shadow-md: 0 10px 30px rgba(33, 33, 33, 0.08);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --font-display: "Oxanium", "Inter", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max-w: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--color-link); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-text);
}

h1 { font-size: clamp(2rem, 5vw + 0.5rem, 3.75rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.65rem, 3vw + 0.5rem, 2.5rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
.muted { color: var(--color-text-muted); }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  gap: 1rem;
}
.logo { display: flex; align-items: center; }
.logo img { height: 40px; width: auto; }
.nav-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 42px; height: 42px;
  display: none;
  align-items: center; justify-content: center;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px; height: 2px;
  background: var(--color-text);
  position: relative;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav a {
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 500;
  position: relative;
}
.nav a:hover { opacity: 0.7; }

.lang-switch {
  display: flex;
  gap: 0.25rem;
  margin-left: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.lang-switch a {
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.lang-switch a:hover { background: var(--color-bg-alt); }
.lang-switch a.active {
  background: var(--color-text);
  color: var(--color-text-inverse);
}

/* ============ HERO ============ */
.hero {
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(33,33,33,0.05), transparent 60%),
    var(--color-bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.3fr 1fr; gap: 4rem; }
}
.hero h1 { margin-bottom: 1rem; }
.hero .lede {
  font-size: clamp(1.05rem, 1.5vw + 0.4rem, 1.25rem);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: 1.75rem;
}
.tagline {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-text);
  color: var(--color-text-inverse);
}
.btn-primary:hover { background: var(--color-accent-hover); color: var(--color-text-inverse); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-bg-alt); }

.hero-portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #1b2a3b, #0a1626);
  box-shadow: var(--shadow-md);
}
.hero-portrait img {
  width: 100%; height: 100%; object-fit: cover;
}
.hero-portrait .placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-align: center;
  padding: 1rem;
}
.hero-portrait .placeholder svg { width: 80px; opacity: 0.4; margin-bottom: 1rem; }

.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.kpi .num {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}
.kpi .lbl {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
  line-height: 1.3;
}

/* ============ SECTIONS ============ */
.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}
.section-alt {
  background: var(--color-bg-alt);
}
.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--color-text-inverse); }
.section-dark .muted { color: rgba(247,247,245,0.7); }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  display: block;
}
.section-head {
  max-width: 60ch;
  margin-bottom: 3rem;
}
.section-head p { color: var(--color-text-muted); font-size: 1.05rem; }

/* ============ ABOUT ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1fr 1.3fr; gap: 4rem; }
}
.bio p { color: var(--color-text-muted); }
.bio p strong { color: var(--color-text); font-weight: 600; }
.credentials {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.6rem;
}
.credentials li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--color-text);
}
.credentials li::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-text);
  margin-top: 0.65em;
  flex-shrink: 0;
}

/* ============ SERVICES ============ */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 800px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
}
.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.service-card .icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-text);
  color: var(--color-text-inverse);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
}
.service-card .icon svg { width: 24px; height: 24px; }
.service-card h3 { margin-bottom: 0.5rem; }
.service-card p { color: var(--color-text-muted); }
.service-card ul {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}
.service-card li {
  font-size: 0.95rem;
  padding-left: 1.25rem;
  position: relative;
  color: var(--color-text);
}
.service-card li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
  font-family: var(--font-display);
}

/* ============ APPROACH ============ */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  counter-reset: step;
}
@media (min-width: 700px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}
.step {
  padding: 1.75rem;
  border: 1px solid rgba(247,247,245,0.12);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.02);
  counter-increment: step;
  position: relative;
}
.step::before {
  content: "0" counter(step);
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: rgba(247,247,245,0.4);
  letter-spacing: 0.08em;
}
.step h3 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--color-text-inverse); }
.step p { color: rgba(247,247,245,0.7); margin: 0; font-size: 0.95rem; }

/* ============ EXPERIENCE ============ */
.experience {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
}
.exp-badge {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
}

/* ============ CONTACT ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 800px) {
  .contact-grid { grid-template-columns: 1fr 1.1fr; gap: 3rem; }
}
.contact-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 1rem;
}
.contact-item:last-child { border-bottom: 0; }
.contact-item .ic {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-item .ic svg { width: 18px; height: 18px; color: var(--color-text); }
.contact-item a { color: var(--color-text); font-weight: 500; word-break: break-word; }
.contact-item .lbl { display: block; font-size: 0.8rem; color: var(--color-text-muted); letter-spacing: 0.05em; text-transform: uppercase; }

.form { display: grid; gap: 1rem; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  font: inherit;
  color: var(--color-text);
  transition: border-color 0.15s ease;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--color-text);
  box-shadow: 0 0 0 3px rgba(33,33,33,0.08);
}

/* ============ FOOTER ============ */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding: 3rem 0 2rem;
}
.footer-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}
@media (min-width: 700px) {
  .footer-grid { flex-direction: row; justify-content: space-between; align-items: center; }
}
.footer-grid img { height: 36px; }
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.footer-links a { color: rgba(247,247,245,0.75); font-size: 0.92rem; }
.footer-links a:hover { color: var(--color-text-inverse); }
.footer-legal {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(247,247,245,0.12);
  font-size: 0.85rem;
  color: rgba(247,247,245,0.55);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ============ MOBILE NAV ============ */
@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed;
    inset: 64px 0 auto 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: 1.25rem;
    gap: 0.5rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-110%);
    transition: transform 0.25s ease;
    box-shadow: var(--shadow-md);
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 0.6rem 0.25rem; border-bottom: 1px solid var(--color-border); }
  .nav a:last-of-type { border-bottom: 0; }
  .lang-switch {
    margin: 0.75rem 0 0;
    padding: 0.75rem 0 0;
    border-left: 0;
    border-top: 1px solid var(--color-border);
    justify-content: center;
  }
}

@media (max-width: 500px) {
  .kpi-row { grid-template-columns: 1fr 1fr; }
  .kpi-row .kpi:last-child { grid-column: 1 / -1; text-align: center; }
}

/* ============ UTILITIES ============ */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
.scroll-mt { scroll-margin-top: 80px; }