/* Pregonda Consulting - clean black and white theme */

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --off-white: #f7f7f7;
  --light-grey: #e5e5e5;
  --mid-grey: #888888;
  --dark-grey: #333333;
  --max-width: 1100px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--black);
  text-decoration: underline;
  text-decoration-color: var(--mid-grey);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s ease;
}

a:hover {
  text-decoration-color: var(--black);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--light-grey);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(4px);
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: block;
  text-decoration: none;
}

.logo-link img {
  height: 42px;
  width: auto;
}

.site-nav {
  display: flex;
  gap: var(--space-md);
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dark-grey);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--black);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--black);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Hero */
.hero {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--light-grey);
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 900px;
  margin-bottom: var(--space-md);
}

.hero p.lead {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--dark-grey);
  max-width: 700px;
  margin-bottom: var(--space-md);
}

.cta-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 2px solid var(--black);
  transition: background 0.2s ease, color 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--white);
  color: var(--black);
}

.btn-secondary {
  background: var(--white);
  color: var(--black);
}

.btn-secondary:hover {
  background: var(--black);
  color: var(--white);
}

/* Sections */
.section {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--light-grey);
}

.section:last-of-type {
  border-bottom: none;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  letter-spacing: -0.01em;
}

.section-intro {
  font-size: 1.1rem;
  color: var(--dark-grey);
  max-width: 760px;
  margin-bottom: var(--space-md);
}

/* Cards / grids */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  border: 1px solid var(--light-grey);
  padding: var(--space-md);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--mid-grey);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-xs);
}

.card p {
  font-size: 0.95rem;
  color: var(--dark-grey);
}

.card-link {
  text-decoration: none;
}

/* Experience / case study list */
.case-study {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--light-grey);
}

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

.case-study h3 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.case-study .meta {
  font-size: 0.85rem;
  color: var(--mid-grey);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.case-study p {
  color: var(--dark-grey);
  max-width: 760px;
}

/* About page */
.about-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.about-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--off-white);
  border: 1px solid var(--light-grey);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mid-grey);
  font-size: 0.9rem;
  text-align: center;
  padding: var(--space-sm);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.credentials {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--light-grey);
}

.credentials li {
  list-style: none;
  margin-bottom: var(--space-xs);
  font-size: 0.95rem;
}

.credentials strong {
  display: block;
  font-weight: 600;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.contact-details {
  margin-bottom: var(--space-md);
}

.contact-details p {
  margin-bottom: var(--space-sm);
}

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--light-grey);
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: var(--space-sm);
  background: var(--white);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--black);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--light-grey);
  padding: var(--space-md) 0;
  margin-top: var(--space-lg);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--mid-grey);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
}

.footer-links a {
  color: var(--mid-grey);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--black);
}

/* Image blocks */
.image-block {
  width: 100%;
  height: 260px;
  background: var(--off-white);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.image-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}

/* Utilities */
.text-center {
  text-align: center;
}

.mt-md {
  margin-top: var(--space-md);
}

/* Responsive */
@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

  .about-photo {
    max-width: 280px;
    margin: 0 auto var(--space-md);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--light-grey);
    flex-direction: column;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }

  .site-nav.open {
    display: flex;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .grid,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: var(--space-lg) 0;
  }

  .cta-group {
    flex-direction: column;
  }

  .btn {
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}