/* ============================================
   SCIVIA, LLC — CSS Foundation
   ============================================ */

/* -------------------------------------------
   1. Design Tokens (Custom Properties)
   ------------------------------------------- */
:root {
  /* Colors */
  --color-primary: #1B2A4A;
  --color-primary-light: #2A3F6A;
  --color-primary-dark: #111D35;
  --color-accent: #00B4D8;
  --color-accent-hover: #0096B7;
  --color-accent-light: rgba(0, 180, 216, 0.1);
  --color-bg: #0D1117;
  --color-bg-alt: #111823;
  --color-text: #E8EDF2;
  --color-text-light: #8B98A9;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-white: #FFFFFF;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-4xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-nav: 0 1px 8px rgba(0, 0, 0, 0.06);

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

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html {
  background: linear-gradient(180deg, #1B2A4A 0%, #2A3F6A 50%, #00B4D8 100%);
  min-height: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
  line-height: 1.2;
}

p {
  overflow-wrap: break-word;
}

/* -------------------------------------------
   3. Typography
   ------------------------------------------- */
h1 {
  font-size: 3.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #E8EDF2;
}

h5 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #E8EDF2;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
  color: #E8EDF2;
}

p {
  color: var(--color-text);
  line-height: 1.7;
}

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

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

small,
.text-sm {
  font-size: 0.875rem;
}

.text-lg {
  font-size: 1.125rem;
}

.text-xl {
  font-size: 1.25rem;
}

/* -------------------------------------------
   4. Container & Layout Utilities
   ------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.text-center {
  text-align: center;
}

/* -------------------------------------------
   5. Section Spacing
   ------------------------------------------- */
.section {
  padding: var(--spacing-4xl) 0;
}

.section--alt {
  background-color: transparent;
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section__header h2 {
  margin-bottom: var(--spacing-sm);
}

.section__header h2::before {
  content: '';
  display: block;
  width: 32px;
  height: 4px;
  background: var(--color-accent);
  margin: 0 auto var(--spacing-sm);
  border-radius: 2px;
}

.section__header p {
  color: var(--color-text-light);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* -------------------------------------------
   6. Button Styles
   ------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-base),
              transform var(--transition-fast),
              box-shadow var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 180, 216, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary--lg {
  padding: 1rem 2.25rem;
  font-size: 1.0625rem;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  background-color: transparent;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9375rem;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-base),
              color var(--transition-base),
              transform var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* -------------------------------------------
   7. Card Base Styles
   ------------------------------------------- */
.card {
  background-color: rgba(15, 22, 40, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* -------------------------------------------
   8. Header & Navigation
   ------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background-color: rgba(13, 17, 30, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.header--scrolled {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

/* Desktop Nav */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav__link {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: #8B98A9;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-base);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.75rem;
  right: 0.75rem;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.nav__link:hover {
  color: var(--color-white);
}

.nav__link:hover::after {
  transform: scaleX(1);
}

.nav__cta {
  margin-left: var(--spacing-xs);
}

/* Hamburger Button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1010;
  position: relative;
}

.hamburger__line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base),
              opacity var(--transition-fast);
}

.hamburger__line:nth-child(1) {
  margin-bottom: 5px;
}

.hamburger__line:nth-child(3) {
  margin-top: 5px;
}

/* Hamburger active state */
.nav--open .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav--open .hamburger__line:nth-child(2) {
  opacity: 0;
}

.nav--open .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
}

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


.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 780px;
  padding: var(--spacing-4xl) var(--spacing-md);
}

.hero__title {
  color: var(--color-white);
  font-size: 3.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.25rem;
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto var(--spacing-xl);
  font-weight: 400;
}

.hero__cta {
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
  box-shadow: 0 4px 24px rgba(0, 180, 216, 0.3);
}

.hero__cta:hover {
  box-shadow: 0 6px 28px rgba(0, 180, 216, 0.45);
}

/* Stack mark accent under hero title — mirrors the logo */
.hero__accent {
  display: block;
  margin: var(--spacing-md) auto var(--spacing-lg);
}

/* -------------------------------------------
   10. Services Section
   ------------------------------------------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.services__card {
  padding: var(--spacing-xl);
}

.services__icon {
  color: var(--color-accent);
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-md);
}

.services__card h3 {
  margin-bottom: var(--spacing-sm);
}

.services__card p {
  color: var(--color-text-light);
}

/* -------------------------------------------
   11. How It Works Section
   ------------------------------------------- */
.process__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.process__step {
  text-align: center;
  position: relative;
}

.process__number {
  display: block;
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  line-height: 1;
}

.process__number::after {
  content: '';
  display: block;
  width: 24px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 1px;
  margin: 6px auto 0;
}

.process__step h3 {
  margin-bottom: var(--spacing-sm);
}

.process__step p {
  color: var(--color-text-light);
  max-width: 320px;
  margin: 0 auto;
}

/* Connector lines between steps (desktop) */
.process__step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 1.5rem;
  right: calc(-1 * var(--spacing-xl) / 2 - 20px);
  width: 40px;
  height: 2px;
  background-color: var(--color-border);
}

/* -------------------------------------------
   12. About Section
   ------------------------------------------- */
.about__grid {
  max-width: 100%;
}

.about__text p {
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.about__text p:last-child {
  margin-bottom: 0;
}

.about__lead {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.6;
}


/* -------------------------------------------
   13. Case Studies Section
   ------------------------------------------- */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.cases__card {
  /* border-top removed — card base handles left accent border */
}

.cases__tag {
  display: inline-block;
  background-color: rgba(0, 180, 216, 0.12);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
}

.cases__card h3 {
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.cases__card p {
  color: var(--color-text-light);
}

/* -------------------------------------------
   14. Blog Preview Section
   ------------------------------------------- */
.blog__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.blog__card {
  display: flex;
  flex-direction: column;
}

.blog__date {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.blog__card h3 {
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-base);
}

.blog__card h3 a {
  color: inherit;
  text-decoration: none;
}

.blog__card h3 a:hover {
  color: var(--color-accent);
}

.blog__card p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.blog__read-more {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  display: inline-block;
  transition: transform var(--transition-base);
}

.blog__read-more:hover {
  transform: translateX(4px);
}

.blog__view-all {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  margin-top: var(--spacing-xl);
  transition: color var(--transition-base);
}

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

/* -------------------------------------------
   15. Contact Section
   ------------------------------------------- */
.contact__simple {
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.contact__email-icon {
  color: var(--color-accent);
}

.contact__simple p {
  color: var(--color-text-light);
  font-size: 1.125rem;
}

.contact__email-address {
  font-size: 0.9375rem !important;
  color: var(--color-text-light) !important;
}

/* -------------------------------------------
   16. Footer
   ------------------------------------------- */
.footer {
  background-color: rgba(0, 0, 0, 0.45);
  color: var(--color-white);
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-3xl);
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  margin-bottom: var(--spacing-sm);
}

.footer__brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

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

.footer__links ul li {
  margin-bottom: var(--spacing-xs);
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.footer__social-icons {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-sm);
}

.footer__social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  transition: background-color var(--transition-base);
}

.footer__social-icons a:hover {
  background-color: var(--color-accent);
}

.footer__social-icons svg {
  width: 20px;
  height: 20px;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer__bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* -------------------------------------------
   17. Blog Page Styles
   ------------------------------------------- */
.blog-page__header {
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  text-align: center;
}

.blog-page__header h1 {
  font-size: 3.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-sm);
}

.blog-page__header p {
  color: var(--color-text-light);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* -------------------------------------------
   18. Article Page Styles
   ------------------------------------------- */
.article {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}

.article__back {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  text-decoration: none;
  transition: transform var(--transition-base), color var(--transition-base);
}

.article__back:hover {
  color: var(--color-accent-hover);
  transform: translateX(-4px);
}

.article h1 {
  margin-bottom: var(--spacing-sm);
}

.article__meta {
  color: var(--color-text-light);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.article h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.article p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.article ul,
.article ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.article ul {
  list-style: disc;
}

.article ol {
  list-style: decimal;
}

/* -------------------------------------------
   19. Scroll Animations (JS-toggled)
   ------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* -------------------------------------------
   20. Utility Classes
   ------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* -------------------------------------------
   21. Responsive Breakpoints
   ------------------------------------------- */

/* Tablet: 768px - 1024px */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.75rem;
  }

  h2 {
    font-size: 2rem;
  }

  .section {
    padding: var(--spacing-3xl) 0;
  }

  .hero__title {
    font-size: 3rem;
  }

  .hero__subtitle {
    font-size: 1.125rem;
  }
}

/* Mobile: < 768px */
@media (max-width: 767px) {
  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .container {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }

  /* Hide desktop nav, show hamburger */
  .nav__links {
    display: none;
  }

  .nav__cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Mobile nav overlay */
  .mobile-nav {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background-color: rgba(13, 17, 23, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    z-index: 1005;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow),
                visibility var(--transition-slow);
  }

  .nav--open .mobile-nav {
    opacity: 1;
    visibility: visible;
  }

  .mobile-nav__link {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-white);
    text-decoration: none;
    transition: color var(--transition-base);
    letter-spacing: -0.01em;
  }

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

  .mobile-nav__cta {
    margin-top: var(--spacing-md);
  }

  /* Services mobile */
  .services__grid {
    grid-template-columns: 1fr;
  }


  /* Case Studies mobile */
  .cases__grid {
    grid-template-columns: 1fr;
  }

  /* Blog mobile */
  .blog__grid {
    grid-template-columns: 1fr;
  }

  /* Contact mobile */
  .contact__grid {
    grid-template-columns: 1fr;
  }

  .contact__submit {
    width: 100%;
  }

  /* How It Works mobile */
  .process__grid {
    grid-template-columns: 1fr;
  }

  .process__step:not(:last-child)::after {
    display: none;
  }

  /* Footer mobile */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  /* Hero mobile */
  .hero {
    min-height: calc(100vh - var(--nav-height));
  }

  .hero__content {
    padding: var(--spacing-2xl) var(--spacing-sm);
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .hero__subtitle {
    font-size: 1.0625rem;
  }

  .hero__cta {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }
}

/* Small mobile: < 400px */
@media (max-width: 399px) {
  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .logo svg {
    width: 120px;
    height: 28px;
  }
}