/* Global CSS variables and base typography (Step 2) */
:root {
  --color-primary-navy: #0B1420;
  --color-accent-orange: #F16521;
  --color-white: #FFFFFF;
  --color-gray-100: #F5F7FA;
  --color-gray-300: #DDE2E7;
  --color-gray-600: #7A828E;
  --font-family-sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 5rem;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
}

body {
  background-color: var(--color-primary-navy);
  color: var(--color-white);
  font-family: var(--font-family-sans);
  line-height: 1.6;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: -9999px;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 1000;
  background: var(--color-accent-orange);
  color: var(--color-white);
  padding: 8px 12px;
  border-radius: 6px;
}

main#main-content {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header (desktop) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 20, 32, 0.9);
  backdrop-filter: saturate(120%) blur(6px);
  border-bottom: 1px solid rgba(221, 226, 231, 0.12);
  /* Reduce vertical padding to keep bar dense */
  padding-top: 4px;
  padding-bottom: 4px;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.site-header .container {
  max-width: none;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: auto;
  padding-top: 0;
  padding-bottom: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-white);
  padding-top: 6px;
  padding-bottom: 6px;
}

.brand-logo {
  display: block;
  height: 50px;
  width: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-tagline {
  font-size: 0.85rem;
  color: var(--color-gray-600);
}

.nav-desktop .nav-list {
  list-style: none;
  display: flex;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
}

.nav-desktop a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 500;
  opacity: 0.9;
  padding-top: 4px;
  padding-bottom: 4px;
}

.nav-desktop a:hover,
.nav-desktop a:focus {
  color: var(--color-accent-orange);
  opacity: 1;
}

/* Mobile navigation */
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 6px;
  margin-left: auto;
  cursor: pointer;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent-orange);
  outline-offset: 2px;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  margin: 5px 0;
}

@media (max-width: 768px) {
  .nav-desktop {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(11, 20, 32, 0.98);
    border-bottom: 1px solid rgba(221,226,231,0.12);
    display: none;
  }

  .nav-desktop.open {
    display: block;
  }

  .nav-desktop .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-desktop .nav-list li a {
    display: block;
    padding: 12px var(--space-md);
  }

  .nav-toggle {
    display: inline-block;
  }
}

/* Hero */
.hero {
  background: var(--color-primary-navy) url('./assets/yasait_hero.jpeg') center/cover no-repeat;
  text-align: center;
  padding: 2rem var(--space-sm);
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  /* Dark overlay with gentle gradient for better text readability */
  background: linear-gradient(
    to bottom,
    rgba(11, 20, 32, 0.65) 0%,
    rgba(11, 20, 32, 0.35) 35%,
    rgba(11, 20, 32, 0.65) 100%
  );
  /* Reduced blur for crisper background while keeping readability */
  backdrop-filter: blur(0px);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin: 0px 0 var(--space-lg) 0;
  color: var(--color-accent-orange);
  font-weight: 700;
  line-height: 1.2;
}

.hero-subtitle {
  color: var(--color-gray-100);
  margin: 0 0 var(--space-xl) 0;
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  line-height: 1.6;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-ctas {
  display: inline-flex;
  gap: var(--space-sm);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}

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

.btn-primary:hover,
.btn-primary:focus {
  filter: brightness(1.05);
}

.btn-secondary {
  background: rgba(255,255,255,0.08);
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.16);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: rgba(255,255,255,0.12);
  color: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
}

/* Pillars */
.pillars {
  padding: var(--space-xl) var(--space-md);
  background: var(--color-primary-navy);
}

/* When pillars are rendered inside hero, make background transparent and fine-tune spacing */
.pillars--in-hero {
  /* Section has no background; only cards (.pillar) are surfaced */
  background: transparent;
  padding-top: 40px; /* spacing under CTAs (user-tuned) */
  padding-bottom: 0;
  margin: 0;
  position: relative;
  z-index: 2; /* render above hero overlay to avoid blur */
}

/* Make in-hero pillars span full viewport width with 20px side margins */
.pillars--in-hero > .container {
  max-width: none;
  padding-left: 20px;
  padding-right: 20px;
}

/* Equal three-column layout with 40px gaps */
.pillars--in-hero .pillars-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.pillar {
  background: rgba(11, 20, 32, 0.80); /* more translucent card */
  border: 1px solid rgba(221, 226, 231, 0.24);
  border-radius: 12px;
  padding: var(--space-lg);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

.pillar-title {
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  margin: 0 0 var(--space-sm) 0;
  color: var(--color-accent-orange);
}

.pillar-text {
  color: var(--color-gray-100);
  margin: 0;
}

/* What We Can Do */
.what-we-do {
  padding: var(--space-xl) 0;
}

.what-we-do .section-header h2 {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 var(--space-sm) 0;
  color: var(--color-accent-orange);
}

.what-we-do .section-intro {
  max-width: 900px;
  margin: 0 auto var(--space-lg) auto;
  color: var(--color-gray-100);
  text-align: center;
}

.capabilities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  max-width: 900px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.capabilities li {
  background: rgba(11, 20, 32, 0.8);
  border: 1px solid rgba(221, 226, 231, 0.16);
  border-radius: 10px;
  padding: var(--space-md);
  text-align: center;
}

.capabilities li span { color: var(--color-white); }

@media (max-width: 640px) {
  .capabilities { grid-template-columns: 1fr; }
}

/* Why Choose Us + User Success Story */
.why-choose-us {
  background-color: var(--color-primary-navy);
  color: var(--color-white);
  padding: var(--space-xxl) var(--space-sm);
}

.why-choose-us .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.why-choose-us h2 {
  font-size: var(--font-size-h2, 2rem);
  margin-bottom: var(--space-lg);
  color: var(--color-accent-orange);
}

.features {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feature {
  display: flex;
  gap: var(--space-sm);
}

.feature .icon {
  font-size: 1.8rem;
  color: var(--color-accent-orange);
  flex-shrink: 0;
}

.feature h3 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--color-white);
}

.feature p {
  color: var(--color-gray-100);
  margin: 0;
}

.testimonial {
  text-align: left;
}

.testimonial img {
  width: 100%;
  max-width: 300px;
  border-radius: 8px;
  margin-bottom: var(--space-md);
}

.testimonial blockquote {
  font-size: 1.1rem;
  font-style: italic;
  margin-bottom: var(--space-sm);
  opacity: 0.9;
  color: var(--color-gray-100);
}

.testimonial .author {
  font-size: 0.95rem;
  font-weight: 600;
  opacity: 0.8;
  color: var(--color-white);
}

@media (max-width: 768px) {
  .why-choose-us .grid {
    grid-template-columns: 1fr;
  }
  .testimonial img {
    max-width: 100%;
  }
}

/* Technology Stack Carousel */
.tech {
  padding: var(--space-xl) 0;
}

.tech .section-header h2 {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 var(--space-sm) 0;
  color: var(--color-accent-orange);
}

.tech .section-intro {
  text-align: center;
  color: var(--color-gray-100);
  margin-bottom: var(--space-lg);
}

.tech-marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.tech-track {
  display: inline-flex;
  gap: var(--space-xl);
  padding: var(--space-md) 0;
  white-space: nowrap;
  animation: marquee 25s linear infinite;
}

.tech-track span {
  color: rgba(255,255,255,0.7);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.tech-track span:hover { color: var(--color-white); }

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Contact */
.contact {
  background-color: var(--color-primary-navy);
  color: var(--color-white);
  padding: var(--space-xxl) var(--space-sm);
}

.contact .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-info h2,
.contact-form h2 {
  font-size: var(--font-size-h2, 2rem);
  margin-bottom: var(--space-md);
  color: var(--color-accent-orange);
}

.contact-info a {
  color: var(--color-accent-orange);
  text-decoration: none;
}

.contact-info a:hover {
  text-decoration: underline;
}

.contact-cta {
  background-color: rgba(255,255,255,0.05);
  border: 1px solid var(--color-accent-orange);
  padding: var(--space-md);
  margin-top: var(--space-lg);
  border-radius: 8px;
  text-align: center;
}

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

.contact-form form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-row {
  display: flex;
  gap: var(--space-md);
}

.form-row input {
  flex: 1;
}

.contact-form input,
.contact-form textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-gray-300);
  color: var(--color-white);
  padding: 0.75rem;
  border-radius: 4px;
  font-size: 1rem;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--color-gray-600);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent-orange);
  box-shadow: 0 0 0 2px rgba(241,101,33,0.25);
}

.contact-form .checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.button-primary {
  background-color: var(--color-accent-orange);
  color: var(--color-white);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.button-primary:hover {
  background-color: #d9571d;
}

@media (max-width: 768px) {
  .contact .grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    flex-direction: column;
  }
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(221,226,231,0.12);
  padding: var(--space-md) 0;
  background: rgba(11,20,32,0.9);
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  text-align: center;
}

.footer-brand { font-weight: 700; }

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--color-gray-100);
}
@media (max-width: 1024px) {
  .pillars-grid,
  .pillars--in-hero .pillars-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* Responsive spacing tuning */
@media (max-width: 1024px) {
  .site-header .container,
  .pillars--in-hero > .container {
    padding-left: 24px;
    padding-right: 24px;
  }

  .nav-desktop .nav-list {
    gap: var(--space-md);
  }
}

@media (max-width: 640px) {
  .site-header .container,
  .pillars--in-hero > .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }
}

/* Wide screens: larger page gutters for header and pillars */
@media (min-width: 1280px) {
  .site-header .container,
  .pillars--in-hero > .container {
    padding-left: 60px;
    padding-right: 60px;
  }
}

@media (min-width: 1024px) and (max-width: 1279px) {
  .site-header .container,
  .pillars--in-hero > .container {
    padding-left: 40px;
    padding-right: 40px;
  }
}