/* CloudKeyNet - Cybersecurity Compliance & DevSecOps Website Styles */
/* Mobile-first responsive design */

/* ============================================
   1. CSS Custom Properties
   ============================================ */
:root {
  /* Colors — Dark cybersecurity theme */
  --color-primary-dark: #0a0e27;
  --color-secondary-dark: #1a1f3a;
  --color-accent: #00d4ff;
  --color-accent-hover: #00b8e6;
  --color-accent-secondary: #00ff88;
  --color-accent-secondary-hover: #00e07a;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b0b8d1;
  --color-danger: #ff4757;
  --color-border: #2a3055;
  --color-surface: #12162e;
  --color-overlay: rgba(10, 14, 39, 0.95);

  /* Font sizes — fluid scale using rem */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-md: 1.125rem;   /* 18px */
  --font-size-lg: 1.25rem;    /* 20px */
  --font-size-xl: 1.5rem;     /* 24px */
  --font-size-2xl: 2rem;      /* 32px */
  --font-size-3xl: 2.5rem;    /* 40px */
  --font-size-4xl: 3rem;      /* 48px */

  /* Spacing scale */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  --space-4xl: 6rem;     /* 96px */

  /* Breakpoints (for reference — used in media queries) */
  /* --bp-tablet: 768px; */
  /* --bp-desktop: 1024px; */

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-md);

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;

  /* Focus ring */
  --focus-ring: 0 0 0 3px rgba(0, 212, 255, 0.5);

  /* Z-index scale */
  --z-nav: 1000;
  --z-overlay: 900;
  --z-modal: 1100;
}

/* ============================================
   2. CSS Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%; /* 16px base */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-primary-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ============================================
   3. Base Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: var(--line-height-heading);
  font-weight: 700;
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-2xl);
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-lg);
}

h4 {
  font-size: var(--font-size-md);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

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

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

a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

ul,
ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ============================================
   4. Utility Classes
   ============================================ */

/* Container — centered with max-width */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Section padding — consistent vertical rhythm */
.section {
  padding-block: var(--space-3xl);
}

/* Section heading styles */
.section-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
  text-align: center;
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 40rem;
  margin-inline: auto;
}

/* Visually hidden — accessible to screen readers only */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
  font-weight: 700;
  z-index: var(--z-modal);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-sm);
}

/* CTA button styles */
.btn {
  display: inline-block;
  padding: 0.75em 1.5em;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast),
    box-shadow var(--transition-fast);
  min-height: 2.75rem; /* 44px touch target */
  min-width: 2.75rem;
}

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

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

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

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

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Text utilities */
.text-center {
  text-align: center;
}

.text-accent {
  color: var(--color-accent);
}

.text-secondary {
  color: var(--color-text-secondary);
}

/* ============================================
   5. Responsive Typography (tablet+)
   ============================================ */
@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  h3 {
    font-size: var(--font-size-xl);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .container {
    padding-inline: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-size-4xl);
  }

  h2 {
    font-size: var(--font-size-3xl);
  }

  h3 {
    font-size: var(--font-size-2xl);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .section {
    padding-block: var(--space-4xl);
  }

  .container {
    padding-inline: var(--space-xl);
  }
}

/* ============================================
   6. Navigation Bar
   ============================================ */

/* Sticky header (Req 1.3) */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background-color: var(--color-primary-dark);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-block: var(--space-sm);
  min-height: 3.5rem;
}

/* Logo */
.nav__logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo {
  height: 6rem;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

/* Hamburger button — visible on mobile (Req 1.4, 1.5, 11.6) */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.75rem;   /* 44px touch target (Req 9.5) */
  height: 2.75rem;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: none;
  border: none;
}

.nav__hamburger:focus-visible {
  box-shadow: var(--focus-ring);
}

.nav__hamburger-line {
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Nav links — hidden on mobile by default */
.nav__links {
  display: none;
  flex-direction: column;
  width: 100%;
  gap: var(--space-xs);
  padding-block: var(--space-md);
}

/* Show nav links when menu is open */
.nav__links.menu-open {
  display: flex;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;  /* 44px touch target */
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-text-primary);
  background-color: var(--color-secondary-dark);
}

.nav__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* CTA in nav */
.nav__cta-item {
  padding-top: var(--space-sm);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 2.75rem;  /* 44px touch target */
}

/* ---- Desktop navigation (≥769px) ---- */
@media (min-width: 769px) {
  .nav {
    flex-wrap: nowrap;
    gap: var(--space-lg);
  }

  /* Hide hamburger on desktop */
  .nav__hamburger {
    display: none;
  }

  /* Show nav links inline on desktop */
  .nav__links {
    display: flex;
    flex-direction: row;
    align-items: center;
    width: auto;
    gap: var(--space-xs);
    padding-block: 0;
  }

  .nav__link {
    padding: var(--space-xs) var(--space-sm);
  }

  .nav__cta-item {
    padding-top: 0;
    margin-left: var(--space-sm);
  }

  .nav__cta {
    width: auto;
    white-space: nowrap;
  }
}

/* ============================================
   7. Hero Section
   ============================================ */

.hero {
  background: linear-gradient(
    135deg,
    var(--color-primary-dark) 0%,
    var(--color-secondary-dark) 50%,
    var(--color-surface) 100%
  );
  text-align: center;
  padding-block: var(--space-4xl) var(--space-3xl);
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 48rem;
  margin-inline: auto;
}

.hero__headline {
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
}

.hero__tagline {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 36rem;
}

/* CTAs — stacked on mobile (Req 2.5) */
.hero__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  width: 100%;
  max-width: 20rem;
}

.hero__ctas .btn {
  min-height: 2.75rem;  /* 44px touch target */
}

/* Side-by-side CTAs on tablet+ */
@media (min-width: 768px) {
  .hero {
    padding-block: var(--space-4xl);
  }

  .hero__tagline {
    font-size: var(--font-size-lg);
  }

  .hero__ctas {
    flex-direction: row;
    justify-content: center;
    max-width: none;
    width: auto;
  }
}

@media (min-width: 1024px) {
  .hero {
    padding-block: 8rem var(--space-4xl);
  }
}

/* ============================================
   8. Services Section
   ============================================ */

/* Services grid — single column on mobile, two columns on desktop */
.services__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
}

.services__heading {
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  position: relative;
  padding-bottom: var(--space-sm);
}

.services__heading::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 3rem;
  height: 3px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.services__intro {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  line-height: var(--line-height-base);
}

.services__cta-wrap {
  margin-top: var(--space-xl);
}

/* ---- Compliance Framework Cards (Req 3.2, 3.3) ---- */
.compliance-frameworks {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.framework-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

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

.framework-card__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  min-height: 2.75rem; /* 44px touch target */
  transition: background-color var(--transition-fast);
}

.framework-card__toggle:hover {
  background-color: var(--color-secondary-dark);
}

.framework-card__toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
  position: relative;
  z-index: 1;
}

.framework-card__name {
  flex: 1;
}

.framework-card__icon {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  width: 1.5rem;
  text-align: center;
  line-height: 1;
}

/* Rotate icon when expanded */
.framework-card__toggle[aria-expanded="true"] .framework-card__icon {
  transform: rotate(45deg);
}

/* Panel expand/collapse transition */
.framework-card__panel {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height var(--transition-slow), opacity var(--transition-base), padding var(--transition-base);
  padding: 0 var(--space-lg);
}

.framework-card__panel[hidden] {
  display: block; /* Override hidden to allow CSS transition */
  max-height: 0;
  opacity: 0;
  padding: 0 var(--space-lg);
  visibility: hidden;
}

.framework-card__panel:not([hidden]) {
  max-height: 20rem;
  opacity: 1;
  padding: 0 var(--space-lg) var(--space-md);
  visibility: visible;
}

.framework-card__panel p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 0;
}

/* ---- DevSecOps Services List ---- */
.devsecops-services {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.devsecops-services__item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: border-color var(--transition-fast);
}

.devsecops-services__item:hover {
  border-color: var(--color-accent-secondary);
}

.devsecops-services__icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

/* ---- DevSecOps Pipeline Diagram (Req 4.3) ---- */
.pipeline {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-lg);
  overflow: hidden;
}

.pipeline__title {
  text-align: center;
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-weight: 600;
}

/* Mobile: vertical stack */
.pipeline__stages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.pipeline__stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-sm);
  position: relative;
  min-width: 0;
}

.pipeline__stage-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
  border-radius: 50%;
  margin-bottom: var(--space-xs);
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

.pipeline__stage-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.pipeline__stage-label {
  font-weight: 700;
  font-size: var(--font-size-xs);
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.pipeline__stage-security {
  font-size: 0.625rem;
  color: var(--color-accent-secondary);
  font-weight: 500;
}

/* Connector — vertical on mobile */
.pipeline__connector {
  width: 2px;
  height: 1rem;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-secondary));
  flex-shrink: 0;
}

/* ---- Desktop: two-column services layout (≥1024px) ---- */
@media (min-width: 1024px) {
  .services__grid {
    flex-direction: row;
    gap: var(--space-2xl);
    flex-wrap: wrap;
  }

  .services__compliance,
  .services__devsecops,
  .services__ai-security {
    flex: 1 1 calc(50% - var(--space-2xl));
    min-width: 20rem;
  }

  /* Pipeline horizontal on desktop */
  .pipeline__stages {
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0;
  }

  .pipeline__stage {
    flex: 0 1 auto;
    max-width: 5rem;
  }

  .pipeline__connector {
    width: 1rem;
    height: 2px;
    margin-top: 1.5rem; /* Align with center of icon */
    background: linear-gradient(to right, var(--color-accent), var(--color-accent-secondary));
    flex-shrink: 1;
  }
}

/* ---- Tablet adjustments (≥768px) ---- */
@media (min-width: 768px) {
  .services__intro {
    font-size: var(--font-size-md);
  }

  .framework-card__toggle {
    font-size: var(--font-size-md);
    padding: var(--space-md) var(--space-xl);
  }

  .framework-card__panel p {
    font-size: var(--font-size-base);
  }

  .framework-card__panel[hidden] {
    padding: 0 var(--space-xl);
  }

  .framework-card__panel:not([hidden]) {
    padding: 0 var(--space-xl) var(--space-lg);
  }

  .pipeline__stage-icon {
    width: 3.5rem;
    height: 3.5rem;
  }

  .pipeline__stage-icon svg {
    width: 1.5rem;
    height: 1.5rem;
  }

  .pipeline__stage-label {
    font-size: var(--font-size-sm);
  }

  .pipeline__stage-security {
    font-size: var(--font-size-xs);
  }

  .devsecops-services {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   9. Partners Section (Req 5.1, 5.2, 5.3)
   ============================================ */

.partners {
  background-color: var(--color-secondary-dark);
}

/* Shared logo grid — used by Partners and Clients */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  justify-items: center;
  align-items: center;
}

.logo-grid__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  width: 100%;
  min-height: 5rem;
  transition: border-color var(--transition-fast);
}

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

.logo-grid__item img {
  max-height: 5rem;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.logo-grid__img--large {
  max-height: 8rem;
}

/* Desktop: auto-fill grid */
@media (min-width: 769px) {
  .logo-grid {
    grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
    gap: var(--space-xl);
  }
}

/* ============================================
   10. Clients Section (Req 6.1, 6.2, 6.3)
   ============================================ */

.clients {
  background-color: var(--color-primary-dark);
}

/* ============================================
   11. About Us Section (Req 13.1, 13.2, 13.3)
   ============================================ */

.about {
  background-color: var(--color-secondary-dark);
}

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

.about__mission {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

.about__content p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

.about__cta-wrap {
  margin-top: var(--space-xl);
}

/* Sidebar — certifications list */
.about__sidebar {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.about__sidebar-title {
  font-size: var(--font-size-lg);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-lg);
}

.about__certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  align-items: center;
}

.about__certs-grid img {
  width: 100%;
  max-width: 5rem;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: contain;
  margin: 0 auto;
}

/* Desktop: two-column layout with sidebar */
@media (min-width: 1024px) {
  .about__layout {
    flex-direction: row;
    align-items: flex-start;
  }

  .about__content {
    flex: 2;
    min-width: 0;
  }

  .about__sidebar {
    flex: 1;
    min-width: 0;
    position: sticky;
    top: 5rem;
  }
}

/* ============================================
   12. Resources Section (Req 14.1, 14.2, 14.3)
   ============================================ */

.resources {
  background-color: var(--color-primary-dark);
}

/* Category tabs */
.resources__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-2xl);
}

.resources__tab {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast);
  min-height: 2.75rem;
  min-width: 2.75rem;
}

.resources__tab:hover {
  color: var(--color-text-primary);
  border-color: var(--color-accent);
}

.resources__tab--active {
  background-color: var(--color-accent);
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.resources__tab:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Resource cards grid — carousel */
.resources__grid {
  display: flex;
  gap: var(--space-lg);
}

.resource-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
  min-width: 300px;
  max-width: 300px;
  flex: 0 0 300px;
}

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

.resource-card[hidden] {
  display: none;
}

.resource-card__type {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-secondary);
  background-color: rgba(0, 255, 136, 0.1);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

.resource-card__title {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: 0;
  line-height: var(--line-height-heading);
}

.resource-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  flex: 1;
}

.resource-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition-fast);
  min-height: 2.75rem;
}

.resource-card__link:hover {
  color: var(--color-accent-hover);
}

.resource-card__link-icon {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.resource-card__link:hover .resource-card__link-icon {
  transform: translate(2px, -2px);
}

/* Tablet: wider cards */
@media (min-width: 768px) {
  .resource-card {
    min-width: 320px;
    max-width: 320px;
    flex: 0 0 320px;
  }

  .resources__tab {
    font-size: var(--font-size-base);
  }
}

/* Desktop: wider cards */
@media (min-width: 1024px) {
  .resource-card {
    min-width: 340px;
    max-width: 340px;
    flex: 0 0 340px;
  }
}

/* ============================================
   13. Contact Section (Req 7.1, 7.2, 7.3, 7.4)
   ============================================ */

.contact {
  background-color: var(--color-secondary-dark);
}

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

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact__icon {
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 0.125rem;
}

.contact__detail-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.contact__detail-value {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

a.contact__detail-value {
  color: var(--color-accent);
}

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

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

.contact__social-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

/* Shared social links — used in Contact and Footer */
.social-links {
  display: flex;
  gap: var(--space-md);
}

.social-links__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.social-links__item:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: rgba(0, 212, 255, 0.08);
}

.social-links__item:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* CTA panel */
.contact__cta-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
}

.contact__cta-heading {
  font-size: var(--font-size-xl);
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.contact__cta-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 28rem;
  margin-inline: auto;
}

.contact__cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  text-align: left;
}

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

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

.contact-form__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.contact-form__input {
  padding: var(--space-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  background-color: var(--color-secondary-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 2.75rem;
}

.contact-form__input::placeholder {
  color: rgba(176, 184, 209, 0.5);
}

.contact-form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--focus-ring);
}

.contact-form__textarea {
  resize: vertical;
  min-height: 6rem;
}

.contact-form__submit {
  align-self: flex-start;
  min-height: 2.75rem;
  cursor: pointer;
}

@media (min-width: 768px) {
  .contact-form__row {
    flex-direction: row;
    gap: var(--space-md);
  }

  .contact-form__row .contact-form__field {
    flex: 1;
  }
}

/* Desktop: two-column layout (info left, CTA right) */
@media (min-width: 1024px) {
  .contact__layout {
    flex-direction: row;
    align-items: flex-start;
  }

  .contact__info {
    flex: 1;
    min-width: 0;
  }

  .contact__cta-panel {
    flex: 1;
    min-width: 0;
    position: sticky;
    top: 5rem;
  }
}

/* ============================================
   14. Footer (Req 8.1, 8.2, 8.3, 8.4, 8.5)
   ============================================ */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-2xl);
}

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

/* Brand column */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__logo-link {
  display: inline-flex;
  align-items: center;
}

.footer__logo {
  height: 5rem;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  max-width: 20rem;
  margin-bottom: 0;
}

/* Footer navigation */
.footer__heading {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
}

.footer__link:hover {
  color: var(--color-accent);
}

/* Footer social column */
.footer__social-col .social-links {
  gap: var(--space-sm);
}

.footer__social-col .social-links__item {
  width: 2.25rem;
  height: 2.25rem;
}

/* Footer bottom bar */
.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.footer__privacy-link {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__privacy-link:hover {
  color: var(--color-accent);
}

/* Tablet: multi-column footer */
@media (min-width: 768px) {
  .footer__grid {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-2xl);
  }

  .footer__brand {
    flex: 1 1 100%;
  }

  .footer__nav {
    flex: 1;
  }

  .footer__social-col {
    flex: 1;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* Desktop: full multi-column layout */
@media (min-width: 1024px) {
  .footer__grid {
    flex-wrap: nowrap;
  }

  .footer__brand {
    flex: 2 1 0;
  }

  .footer__nav {
    flex: 1 1 0;
  }

  .footer__social-col {
    flex: 1 1 0;
  }
}

/* ============================================
   15. Privacy Policy Page
   ============================================ */

.privacy-content {
  max-width: 48rem;
  margin-inline: auto;
}

.privacy-content h2 {
  font-size: var(--font-size-xl);
  color: var(--color-accent);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.privacy-content h2:first-child {
  margin-top: 0;
}

.privacy-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: var(--space-md);
}

.privacy-content ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.privacy-content li {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: var(--space-sm);
  position: relative;
  list-style: disc;
}

.privacy-content li strong {
  color: var(--color-text-primary);
}

@media (min-width: 768px) {
  .privacy-content h2 {
    font-size: var(--font-size-2xl);
  }
}

/* ============================================
   16. Modal / Splash Overlay
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(10, 14, 39, 0.9);
  backdrop-filter: blur(4px);
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  position: relative;
  width: 100%;
  max-width: 32rem;
  max-height: 90vh;
  overflow-y: auto;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  transform: translateY(1rem);
  transition: transform var(--transition-base);
}

.modal-overlay.is-open .modal {
  transform: translateY(0);
}

.modal__close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal__close:hover {
  color: var(--color-text-primary);
}

.modal__close:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.modal__title {
  font-size: var(--font-size-xl);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  padding-right: var(--space-2xl);
}

.modal__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .modal {
    max-width: 36rem;
    padding: var(--space-3xl);
  }

  .modal__title {
    font-size: var(--font-size-2xl);
  }
}

/* ============================================
   17. Pipeline Modal
   ============================================ */

.modal--wide {
  max-width: 52rem;
}

.pipeline-modal__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-block: var(--space-xl);
}

.pipeline-modal__stage {
  background-color: var(--color-secondary-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--transition-fast);
}

.pipeline-modal__stage:hover {
  border-color: var(--color-accent);
}

.pipeline-modal__icon {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.pipeline-modal__stage-title {
  font-size: var(--font-size-md);
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.pipeline-modal__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
  line-height: var(--line-height-base);
}

.pipeline-modal__footer {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.pipeline-modal__cta-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

@media (min-width: 768px) {
  .pipeline-modal__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .pipeline-modal__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   18. About Us Modal
   ============================================ */

.about-modal__section {
  margin-bottom: var(--space-xl);
}

.about-modal__heading {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.about-modal__section p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

.about-modal__team {
  margin-bottom: var(--space-xl);
}

.about-modal__team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.about-modal__member {
  text-align: center;
  background-color: var(--color-secondary-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.about-modal__photo {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--space-md);
  border: 3px solid var(--color-accent);
}

.about-modal__name {
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.about-modal__role {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.about-modal__bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 0;
}

.about-modal__reasons {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.about-modal__reason {
  background-color: var(--color-secondary-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.about-modal__reason strong {
  display: block;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.about-modal__reason p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.about-modal__footer {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-xl);
}

@media (min-width: 768px) {
  .about-modal__team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* ============================================
   19. Carousel
   ============================================ */

.carousel {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.carousel__track-container {
  overflow-x: auto;
  overflow-y: hidden;
  flex: 1;
  min-width: 0;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.carousel__track-container::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.carousel__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
}

.carousel__btn:hover:not(:disabled) {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
}

.carousel__btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.carousel__btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

@media (max-width: 767px) {
  .carousel__btn {
    display: none;
  }

  .carousel__track-container {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .carousel__track-container::-webkit-scrollbar {
    display: none;
  }

  .carousel__track {
    transition: none;
  }

  .resource-card {
    scroll-snap-align: start;
  }
}

/* Event modal details */
#event-modal-details h3 {
  font-size: var(--font-size-md);
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

#event-modal-details ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: 0;
  list-style: none;
}

#event-modal-details li {
  background-color: var(--color-secondary-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  font-size: var(--font-size-sm);
}

#event-modal-details li strong {
  color: var(--color-text-primary);
}