/* Enrisk - AI & Digital Transformation Strategy */
/* Design inspired by Origin AI - clean, professional, enterprise */

:root {
  --color-bg: #0a0a0a;
  --color-bg-elevated: #141414;
  --color-text: #f5f5f5;
  --color-text-muted: #a3a3a3;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-border: #262626;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --radius: 8px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 500;
  line-height: 1.2;
}

/* Header & Nav */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Mobile nav open state */
body.nav-open .nav-links {
  display: flex;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  background: var(--color-bg);
  z-index: 99;
}

body.nav-open .nav .btn-primary {
  display: inline-flex;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

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

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-image-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
}

.hero-img {
  background-size: cover;
  background-position: center;
  opacity: 0.4;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.3) 0%,
    rgba(10, 10, 10, 0.7) 50%,
    rgba(10, 10, 10, 0.95) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-3xl) 0;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  max-width: 900px;
  margin: 0 auto var(--space-lg);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Sections */
.section {
  padding: var(--space-3xl) 0;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 400;
  max-width: 700px;
  margin-bottom: var(--space-2xl);
  line-height: 1.3;
}

/* Services */
.services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  padding: var(--space-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: var(--transition);
}

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

.service-icon {
  color: var(--color-accent);
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.service-card h4 {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Industries */
.industries {
  background: var(--color-bg-elevated);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-lg);
}

.industry-card {
  position: relative;
  min-height: 280px;
  border-radius: var(--radius);
  overflow: hidden;
  background-size: cover;
  background-position: center;
}

.industry-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 10, 10, 0.95) 0%,
    rgba(10, 10, 10, 0.5) 50%,
    transparent 100%
  );
}

.industry-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg);
}

.industry-content h4 {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.industry-content p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Results */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.result-item {
  padding: var(--space-lg);
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg-elevated);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.result-number {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.result-item p {
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* Approach */
.approach {
  background: var(--color-bg);
}

.approach-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.approach-step {
  padding: var(--space-xl);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
  border-radius: 50%;
  margin-bottom: var(--space-md);
}

.approach-step h4 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.approach-step p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.approach-cta {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  text-align: center;
}

.approach-cta p {
  font-size: 1rem;
  color: var(--color-text);
}

.approach-cta strong {
  color: var(--color-accent);
}

/* Partners */
.partners {
  background: var(--color-bg-elevated);
}

.partners-categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.partners-category h4 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-lg);
  align-items: center;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  min-height: 80px;
  transition: var(--transition);
}

.partner-logo:hover {
  border-color: var(--color-accent);
}

.partner-logo img {
  max-width: 100px;
  max-height: 40px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.partner-logo:hover img {
  opacity: 1;
}

/* Principles */
.principles {
  background: var(--color-bg-elevated);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.principle-card {
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.principle-card h4 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.principle-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Insights */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.insight-card {
  padding: var(--space-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.insight-card:hover {
  border-color: var(--color-accent);
}

.insight-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.insight-card h4 {
  font-size: 1.1rem;
  font-weight: 500;
}

.insights-cta {
  margin-top: var(--space-xl);
  text-align: center;
}

/* Blog Page */
.blog-page {
  padding-top: 72px;
  min-height: 100vh;
}

.blog-hero {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.blog-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.blog-hero p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
}

.blog-content {
  padding: var(--space-3xl) 0;
  max-width: 720px;
}

.blog-post {
  padding-bottom: var(--space-3xl);
  margin-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--color-border);
}

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

.blog-post-header {
  margin-bottom: var(--space-xl);
}

.blog-post-meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.blog-post-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

.blog-post-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.blog-post-body {
  font-size: 1rem;
  line-height: 1.75;
}

.blog-post-body p {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
}

.blog-post-body h3 {
  font-size: 1.2rem;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--color-text);
}

.blog-post-body ol,
.blog-post-body ul {
  margin: var(--space-md) 0 var(--space-lg);
  padding-left: var(--space-xl);
  color: var(--color-text-muted);
}

.blog-post-body li {
  margin-bottom: var(--space-sm);
}

.blog-post-body a {
  color: var(--color-accent);
  text-decoration: none;
}

.blog-post-body a:hover {
  text-decoration: underline;
}

.blog-cta {
  margin-top: var(--space-2xl);
  text-align: center;
}

/* Testimonials */
.testimonials-slider {
  overflow: hidden;
}

.testimonial-track {
  display: flex;
  gap: var(--space-xl);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-md);
  -webkit-overflow-scrolling: touch;
}

.testimonial-track::-webkit-scrollbar {
  height: 6px;
}

.testimonial-track::-webkit-scrollbar-track {
  background: var(--color-bg-elevated);
  border-radius: 3px;
}

.testimonial-track::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.testimonial {
  flex: 0 0 360px;
  scroll-snap-align: start;
  padding: var(--space-xl);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.testimonial p {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  font-style: italic;
}

.testimonial footer strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.testimonial footer span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* FAQ */
.faq-list {
  max-width: 700px;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  padding: var(--space-lg) 0;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--color-text-muted);
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item p {
  padding: 0 0 var(--space-lg);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Contact */
.contact {
  text-align: center;
  padding: var(--space-3xl) 0;
  background: var(--color-bg-elevated);
}

.contact-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

/* Footer */
.footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

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

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-contact a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav .btn-primary {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

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

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

  .footer-content {
    flex-direction: column;
  }

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

  .blog-content {
    padding: var(--space-xl) var(--space-lg);
  }
}