/* ===================================================================
   BABELA CONSULTING — Corporate Website Stylesheet
   Style: McKinsey / Boutique Financial Advisory
   ==================================================================== */

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

:root {
  --navy: #0B1D33;
  --navy-light: #132D4F;
  --dark: #1A1A1A;
  --gray-900: #212529;
  --gray-700: #495057;
  --gray-500: #6c757d;
  --gray-300: #dee2e6;
  --gray-100: #f8f9fa;
  --white: #ffffff;
  --accent: #1B3A5C;
  --border: #e0e0e0;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --max-width: 1200px;
  --header-height: 80px;
  --transition: 0.3s ease;
}

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

body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* --- Typography --- */
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 700; line-height: 1.2; color: var(--navy); }
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1rem; color: var(--gray-700); }
.lead { font-size: 1.15rem; line-height: 1.8; color: var(--gray-500); }
.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

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

.section { padding: 6rem 0; }
.section--gray { background-color: var(--gray-100); }
.section--navy { background-color: var(--navy); color: var(--white); }
.section--navy h2, .section--navy h3, .section--navy h4 { color: var(--white); }
.section--navy p { color: rgba(255,255,255,0.75); }
.section--navy .section-label { color: rgba(255,255,255,0.5); }

.grid { display: grid; gap: 2.5rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .section { padding: 4rem 0; }
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }

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

.logo {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
}
.logo span { font-weight: 300; color: var(--gray-500); }

.nav { display: flex; align-items: center; gap: 2.5rem; }
.nav__link {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--gray-700);
  transition: color var(--transition);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1.5px;
  background: var(--navy);
  transition: width var(--transition);
}
.nav__link:hover, .nav__link.active { color: var(--navy); }
.nav__link:hover::after, .nav__link.active::after { width: 100%; }

.lang-switch {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-500);
  border: 1px solid var(--gray-300);
  padding: 0.3rem 0.7rem;
  border-radius: 3px;
  transition: all var(--transition);
}
.lang-switch:hover { color: var(--navy); border-color: var(--navy); }

/* Mobile menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--navy);
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform var(--transition);
  }
  .nav.open { transform: translateY(0); }
}

/* --- Hero --- */
.hero {
  padding-top: calc(var(--header-height) + 6rem);
  padding-bottom: 6rem;
  min-height: 80vh;
  display: flex;
  align-items: center;
}
.hero--full { min-height: 100vh; }
.hero__content { max-width: 720px; }
.hero h1 { margin-bottom: 1.5rem; }
.hero .lead { margin-bottom: 2.5rem; }

.hero--image {
  background-size: cover;
  background-position: center;
  position: relative;
}
.hero--image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,29,51,0.88) 0%, rgba(11,29,51,0.6) 100%);
}
.hero--image .container { position: relative; z-index: 1; }
.hero--image h1 { color: var(--white); }
.hero--image .lead { color: rgba(255,255,255,0.8); }

/* --- Page Header (for inner pages) --- */
.page-header {
  padding-top: calc(var(--header-height) + 5rem);
  padding-bottom: 4rem;
  background: var(--gray-100);
  border-bottom: 1px solid var(--border);
}
.page-header h1 { margin-bottom: 1rem; }
.page-header .lead { max-width: 640px; }

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.9rem 2rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
}
.btn--primary {
  background: var(--navy);
  color: var(--white);
}
.btn--primary:hover { background: var(--navy-light); }
.btn--outline {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--navy);
}
.btn--outline:hover { background: var(--navy); color: var(--white); }
.btn--white {
  background: var(--white);
  color: var(--navy);
}
.btn--white:hover { background: var(--gray-100); }

/* --- Cards --- */
.card {
  padding: 2.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.card:hover { border-color: var(--navy); box-shadow: 0 4px 20px rgba(0,0,0,0.04); }
.card__number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gray-300);
  margin-bottom: 1rem;
}
.card h3 { margin-bottom: 0.75rem; }
.card p:last-child { margin-bottom: 0; }

.card--icon { padding-top: 3rem; position: relative; }
.card--icon::before {
  content: attr(data-icon);
  position: absolute;
  top: -1px; left: 2.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--navy);
  padding: 0.4rem 0.8rem;
}

/* --- Service blocks --- */
.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 450px;
}
.service-block:nth-child(even) .service-block__image { order: -1; }
.service-block__content {
  padding: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.service-block__image {
  background-size: cover;
  background-position: center;
  min-height: 300px;
}
@media (max-width: 768px) {
  .service-block { grid-template-columns: 1fr; }
  .service-block:nth-child(even) .service-block__image { order: 0; }
  .service-block__content { padding: 2.5rem 2rem; }
}

/* --- Stats row --- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center; }
.stat__number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat__label { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,0.5); }
@media (max-width: 768px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* --- Approach steps --- */
.approach-step {
  display: flex;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}
.approach-step:last-child { border-bottom: none; }
.approach-step__number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--gray-300);
  flex-shrink: 0;
  width: 80px;
}
.approach-step h3 { margin-bottom: 0.5rem; }
@media (max-width: 768px) {
  .approach-step { flex-direction: column; gap: 1rem; }
  .approach-step__number { font-size: 2rem; width: auto; }
}

/* --- Contact form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; gap: 3rem; } }

.contact-info__item {
  margin-bottom: 2rem;
}
.contact-info__item h4 { margin-bottom: 0.3rem; color: var(--navy); }

.form-group { margin-bottom: 1.5rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--gray-700);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--gray-300);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--navy);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* --- Footer --- */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.6);
  padding: 4rem 0 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
@media (max-width: 768px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer__grid { grid-template-columns: 1fr; } }

.footer h4 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}
.footer a { color: rgba(255,255,255,0.6); transition: color var(--transition); font-size: 0.9rem; }
.footer a:hover { color: var(--white); }
.footer ul li { margin-bottom: 0.5rem; }
.footer__logo {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1rem;
}
.footer__logo span { font-weight: 300; color: rgba(255,255,255,0.4); }
.footer__desc { font-size: 0.9rem; line-height: 1.7; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}
.footer__legal { display: flex; gap: 1.5rem; }
@media (max-width: 768px) {
  .footer__bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

/* --- Cookie Banner --- */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--navy);
  color: rgba(255,255,255,0.8);
  padding: 1.2rem 2rem;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  font-size: 0.85rem;
}
.cookie-banner.show { display: flex; }
.cookie-banner a { color: var(--white); text-decoration: underline; }
.cookie-banner__buttons { display: flex; gap: 0.75rem; flex-shrink: 0; }
.cookie-banner__btn {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1.2rem;
  cursor: pointer;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.cookie-banner__btn--accept { background: var(--white); color: var(--navy); }
.cookie-banner__btn--reject { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.3); }
@media (max-width: 768px) {
  .cookie-banner { flex-direction: column; text-align: center; }
}

/* --- Legal pages --- */
.legal-content { max-width: 800px; }
.legal-content h2 { font-size: 1.5rem; margin-top: 2.5rem; margin-bottom: 1rem; }
.legal-content h3 { font-size: 1.2rem; margin-top: 2rem; margin-bottom: 0.75rem; }
.legal-content p { margin-bottom: 1rem; }
.legal-content ul { margin-left: 1.5rem; margin-bottom: 1rem; list-style: disc; }
.legal-content ul li { margin-bottom: 0.3rem; color: var(--gray-700); }

/* --- Divider line --- */
.divider {
  width: 60px;
  height: 2px;
  background: var(--navy);
  margin: 1.5rem 0;
}
.divider--white { background: rgba(255,255,255,0.3); }
.divider--center { margin-left: auto; margin-right: auto; }

/* --- Utility --- */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.pt-0 { padding-top: 0; }

/* --- Fade-in animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }