/* RexHost Infrastructure - Main Stylesheet
   Premium, clean, Core Web Vitals optimized */

:root {
  --color-primary: #0a1628;
  --color-primary-light: #152a47;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-silver: #94a3b8;
  --color-light: #f1f5f9;
  --color-white: #ffffff;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Inter', system-ui, sans-serif;
  --container-max: 1280px;
  --section-padding: clamp(3rem, 8vw, 6rem);
  --transition-base: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-primary);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(10, 22, 40, 0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.nav-main {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
  list-style: none;
  align-items: center;
}

.nav-main li a {
  white-space: nowrap;
}

.nav-main a {
  color: var(--color-primary);
  font-weight: 500;
}

.nav-main a:hover {
  color: var(--color-accent);
}

/* Hero */
.hero {
  padding: var(--section-padding) 0;
  background: linear-gradient(180deg, var(--color-light) 0%, var(--color-white) 100%);
}

.hero .container {
  display: grid;
  gap: 2rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

.hero .lead {
  font-size: 1.25rem;
  color: var(--color-primary-light);
  max-width: 640px;
  margin: 0 auto 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: background var(--transition-base), transform var(--transition-base);
  cursor: pointer;
  border: none;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Sections common */
section {
  padding: var(--section-padding) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--color-silver);
  max-width: 560px;
  margin: 0 auto;
}

/* Value Proposition */
.value-prop {
  background: var(--color-white);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.value-card {
  padding: 2rem;
  border-radius: 0.75rem;
  background: var(--color-light);
  transition: transform var(--transition-base);
}

.value-card:hover {
  transform: translateY(-4px);
}

.value-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

/* Layanan */
.services {
  background: var(--color-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--color-white);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.service-card-body {
  padding: 1.5rem;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.service-card p {
  color: var(--color-primary-light);
  margin-bottom: 1rem;
}

/* Infrastructure */
.infrastructure {
  background: var(--color-white);
}

.infra-list {
  display: grid;
  gap: 1.5rem;
}

.infra-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem;
  border-radius: 0.5rem;
  background: var(--color-light);
}

.infra-item h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

/* Security */
.security {
  background: var(--color-primary);
  color: var(--color-white);
}

.security h2,
.security h3 {
  color: var(--color-white);
}

.security p {
  color: var(--color-silver);
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.security-item {
  padding: 1.5rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

/* Performance */
.performance {
  background: var(--color-light);
}

.perf-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  text-align: center;
}

.perf-stat {
  padding: 1.5rem;
}

.perf-stat strong {
  display: block;
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

/* Server Locations */
.locations {
  background: var(--color-white);
}

.location-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.location-card {
  padding: 1.5rem;
  border: 1px solid rgba(10, 22, 40, 0.08);
  border-radius: 0.5rem;
  text-align: center;
}

.location-card strong {
  display: block;
  margin-bottom: 0.25rem;
}

/* FAQ */
.faq {
  background: var(--color-light);
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  padding: 1.5rem;
  margin-bottom: 1rem;
  background: var(--color-white);
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.faq-item h3 {
  font-size: 1.0625rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.faq-item p {
  color: var(--color-primary-light);
  font-size: 0.9375rem;
}

/* Testimonials */
.testimonials {
  background: var(--color-white);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  padding: 2rem;
  border-radius: 0.75rem;
  background: var(--color-light);
  border-left: 4px solid var(--color-accent);
}

.testimonial-card blockquote {
  font-style: italic;
  margin-bottom: 1rem;
  color: var(--color-primary-light);
}

.testimonial-card cite {
  font-size: 0.875rem;
  color: var(--color-silver);
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  text-align: center;
}

.cta h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta p {
  color: var(--color-silver);
  margin-bottom: 1.5rem;
}

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

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

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: var(--color-silver);
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li {
  margin-bottom: 0.5rem;
}

.footer-grid a {
  color: var(--color-silver);
}

.footer-grid a:hover {
  color: var(--color-white);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.875rem;
  text-align: center;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-white);
  z-index: 9999;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* Responsive nav */
@media (max-width: 768px) {
  .nav-main {
    display: none;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
}