/* ==========================================================================
   Table of contents
   ==========================================================================
   1. Custom properties
   2. Global styles
   3. Fonts
   4. Main header
   5. Mobile header
   6. Main content container
   7. Portfolio grid
   8. Project page
   9. Disclaimer section
   ========================================================================== */

/* ==========================================================================
   1. Custom properties
   ========================================================================== */

:root {
  /* Color system */
  --color-white: #fff;
  --color-black: #000;
  --color-primary: #003a4c;
  --color-secondary: #01617f;
  --color-tertiary: #e5ebed;

  /* Typography */
  --font-primary: "Poppins", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing system (mobile base) */
  --spacing-gutter: 1.5rem;
  --spacing-section: 3rem;

  /* Layout constraints (mobile base) */
  --content-max-width: 900px;
  --site-max-width: none;
  --header-height: 80px;

  /* Transitions */
  --transition-linear: 0.2s linear;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-ease: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Responsive adjustments */
@media (min-width: 768px) {
  :root {
    /* Scale up spacing above mobile */
    --spacing-gutter: 2rem;
    --spacing-section: 3rem;

    /* Scale up header and nav above mobile */
    --header-height: 5rem;
  }
}


/* ==========================================================================
   2. Global styles
   ========================================================================== */

html {
  font-family: sans-serif;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  font-weight: normal;
}

body {
  overflow: hidden;
  overflow-y: auto;
  background-color: var(--color-white);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: var(--font-weight-regular);
  line-height: 1.5;
  text-wrap: pretty;
}

::selection {
  color: var(--color-white);
  background: var(--color-black);
}


/* ==========================================================================
   3. Fonts
   ========================================================================== */

@font-face {
  font-family: 'Poppins';
  src:
    url("fonts/Poppins/Poppins-Regular.woff2") format("woff2"),
    url("fonts/Poppins/Poppins-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Poppins';
  src:
    url("fonts/Poppins/Poppins-Medium.woff2") format("woff2"),
    url("fonts/Poppins/Poppins-Medium.woff") format("woff");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Poppins';
  src:
    url("fonts/Poppins/Poppins-SemiBold.woff2") format("woff2"),
    url("fonts/Poppins/Poppins-SemiBold.woff") format("woff");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Poppins';
  src:
    url("fonts/Poppins/Poppins-Bold.woff2") format("woff2"),
    url("fonts/Poppins/Poppins-Bold.woff") format("woff");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

h1 {
  font-family: var(--font-primary);
}

h2 {
  font-family: var(--font-primary);
  font-size: 2rem;
  line-height: 1.3;
}

p {
  font-weight: var(--font-weight-regular);
  letter-spacing: 0rem;
}

a {
  color: var(--color-black);
  text-decoration: none;
  background: transparent;
}

a:visited, a.active {
  color: var(--color-black);
  text-decoration: none;
}

ul {
  display: inline-block;
  padding: 0;
}

ul li {
  display: block;
  list-style: none;
  padding: 0;
}

img {
  display: block;
  width: 100%;
  border: 0;
}


/* ==========================================================================
   4. Main header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2rem);
  -webkit-backdrop-filter: blur(0.5rem); /* For broader compatibility */
}

/* Update z-index when nav is open to keep header visible */
.header.nav-open {
  z-index: 3;
}

/* Header block: Special case with max-width constraint */
.header .header-block {
  max-width: var(--site-max-width);
  margin: 0 auto;
}

.header .header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: auto;
  height: var(--header-height);
  padding: 0 var(--spacing-gutter);
}

/* Logo */
.header .header-logo-container {
  display: flex;
  align-items: center;
  height: var(--header-height);
  z-index: 3;
}

/* Desktop Navigation - Centered Links (visible above 768px) */
.header-navigation {
  display: none;
}

@media (min-width: 768px) {
  .header-navigation {
    display: flex;
    flex: 1;
    justify-content: right;
    align-items: right;
  }
}

/* Show header-navigation on mobile for hamburger button */
@media (max-width: 767px) {
  .header-navigation {
    display: flex;
    align-items: center;
  }
}

.header-navigation .header-nav-links {
  display: none;
  gap: 40px;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .header-navigation .header-nav-links {
    display: flex;
  }
}

.header-navigation .header-nav-links li {
  display: inline-block;
}

.header-navigation .header-nav-links a {
  font-family: var(--font-primary);
  font-size: 1em;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-linear);
}

.header-navigation .header-nav-links a:hover {
  color: var(--color-secondary);
}

.header-navigation .header-nav-links a.active {
  color: var(--color-secondary);
}

/* Logo */
.header .header-logo {
  width: 40px;
  height: 40px;
  overflow: hidden;
  text-indent: -9999px;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .header .header-logo {
    height: 50px;
    width: 50px;
  }
}

.header .header-logo img {
  display: block;
  border-radius: 50%;
}

/* ==========================================================================
   5. Mobile header
   ========================================================================== */

/* Hamburger Menu Button (Mobile Only) */
.header-navigation .hamburger {
  display: block;
  position: relative;
  z-index: 4;
  width: 36px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

/* Hide hamburger on desktop */
@media (min-width: 768px) {
  .header-navigation .hamburger {
    display: none;
  }
}

.header-navigation .hamburger-line {
  display: block;
  width: 100%;
  height: 1.4px;
  background-color: var(--color-primary);
  transition: all var(--transition-smooth);
  position: absolute;
  left: 0;
}

/* Even, centered resting positions */
.header-navigation .hamburger span:nth-child(1) { transform: translateY(-8px); }
.header-navigation .hamburger span:nth-child(2) { transform: translateY(0); }
.header-navigation .hamburger span:nth-child(3) { transform: translateY(8px); }

/* Active, collapse to center, then rotate into an X */
.header-navigation .hamburger.active span:nth-child(1) { transform: translateY(0) rotate(45deg); }
.header-navigation .hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.header-navigation .hamburger.active span:nth-child(3) { transform: translateY(0) rotate(-45deg); }

/* Full-page overlay navigation for mobile (<768px) */
.header-navigation .navigation {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 2;
  display: none;
  width: 100%;
  height: 100vh;
  padding: 30px;
  background-color: var(--color-white);
  text-align: center;
}

/* Hide overlay nav on desktop (>=768px) */
@media (min-width: 768px) {
  .header-navigation .navigation {
    display: none;
  }
}

/* Show nav when open class is added */
.header-navigation .navigation.nav-open {
  display: block;
}

/* Color for all nav links */
.header-navigation .navigation a {
  color: var(--color-primary);
}

/* Nav links with spacing and transition - centered for full-page mobile */
.header-navigation .navigation ul.primary-navigation {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.header-navigation .navigation ul.primary-navigation li a {
  display: block;
  margin-bottom: 2rem;
  font-family: var(--font-primary);
  font-size: 3em;
  font-weight: var(--font-weight-medium);
  line-height: 1;
  transition: var(--transition-linear);
}

/* Fade effect on hover instead of slide */
.header-navigation .navigation ul.primary-navigation li a:hover {
  color: var(--color-secondary)
}

/* Active link color */
.header-navigation .navigation ul.primary-navigation li a.active {
  color: var(--color-secondary);
}

/* Anchor social link at bottom center */
.header-navigation .navigation ul.social {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: auto;
}

/* Social icon link */
.header-navigation .navigation ul.social li a {
  display: block;
  width: 30px;
  height: 30px;
  overflow: hidden;
  text-indent: -9999px;
  white-space: nowrap;
  background-image: url("icons/linkedin-icon.svg");
  background-size: 100%;
  transition: opacity var(--transition-linear);
}

/* Fade effect on social icon hover */
.header-navigation .navigation ul.social li a:hover {
  color: var(--color-secondary);
}

/* Force hide mobile navigation at desktop breakpoint */
@media (min-width: 768px) {
  .header-navigation .navigation {
    display: none !important;
  }
}


/* ==========================================================================
   6. Main content container
   ========================================================================== */

.main {
  width: 100%;
  background-color: var(--color-white);
}


/* ==========================================================================
   7. Portfolio grid
   ========================================================================== */

.home-page .grid {
  padding-top: 5rem;
  margin-bottom: 5.5rem;
}

@media (min-width: 768px) {
  .home-page .grid {
    padding-top: 5rem;
    margin-bottom: 5.5rem;
  }
}

/* CSS grid structure with gap control */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-row-gap: 5rem;
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-gutter);
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
    grid-row-gap: 4rem;
    grid-column-gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

@media (min-width: 1440px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

/* Project descriptions */
.card {
  position: relative;
  display: block;
  padding-top: 100%;
  text-align: center;
}

.card a {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.card a:hover .card-info-container {
  opacity: 1;
}

.card .card-thumbnail {
  width: 100%;
  height: 100%;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center; 
  transition: all var(--transition-ease);
}

.card .card-info-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.card-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 1024px) {
  .card .card-info-container {
    opacity: 0;
    background-color: rgba(255, 255, 255, 0.9);
    transition: all var(--transition-ease);
  }
}

.card-info {
  position: absolute;
  top: 102%;
  width: 100%;
}

@media (min-width: 1024px) {
  .card-info {
    top: 50%;
    transform: translateY(-50%);
  }
}

.card-client {
  max-width: none;
  padding: 0;
  margin-bottom: 5px;
  font-size: 20px;
  line-height: 1.4;
}

@media (min-width: 768px) {
  .card-client {
    font-size: 22px;
    line-height: 1.4;
  }
}

@media (min-width: 1024px) {
  .card-client {
    padding: 0 30px;
    font-size: 30px;
    line-height: 1.2;
  }
}

.card-description {
  display: none;
  margin: 0;
  font-size: 16px;
  line-height: 1.2;
}

@media (min-width: 1024px) {
  .card-description {
    display: inline-block;
  }
}


/* ==========================================================================
   8. Project page
   ========================================================================== */

.project-page {
  padding-top: 7rem;
  text-align: left;
  font-family: var(--font-primary);
  background-color: var(--color-white);
  width: 100%;
}

.project-header-block {
  padding: 0 var(--spacing-gutter);
  margin-bottom: 2rem;
}

.project-text-block {
  padding: 0 var(--spacing-gutter);
  margin: 1.5rem 0 2.5rem 0;
}

.project-text-container {
  max-width: var(--content-max-width);
  margin: 0 auto 0;
}

.project-image-block {
  padding: 0 var(--spacing-gutter);
}

.project-image-container {
  max-width: var(--content-max-width);
  margin: 0 auto 1.5rem;
}

.project-image-container .image,
.project-image-container .video {
  display: block;
  height: auto;
  width: 100%;
  object-fit: cover;
}

/* Flex row for side-by-side images */
.project-image-row {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: var(--content-max-width);
  margin: 0 auto 1.5rem;
}

.project-image-row-item {
  flex: 1;
}

.project-image-row-item .image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-image-container:last-child {
  margin-bottom: 0; /* This removes the bottom margin on the final image */
}

.title {
  font-size: 2.5rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.subheading {
  font-size: 1.4rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin-bottom: 0.3rem;
}

.bodycopy {
  font-size: 1rem;
  font-weight: var(--font-weight-regular);
  line-height: 1.5;
  letter-spacing: 0em;
  color: var(--color-black);
}

/* Project page responsive adjustments */
@media (min-width: 768px) {
  .project-page {
    padding-top: 8rem;
  }

  .project-header-block {
    margin-bottom: 2rem;
  }

  .project-text-block {
    margin: 2rem 0 3rem 0;
  }

  .project-image-container {
    margin: 0 auto 2rem;
  }

  .project-image-row {
    flex-direction: row;
    gap: 2rem;
    margin: 0 auto 2rem;
  }

  .title {
    font-size: 3rem;
    line-height: 1;
    color: #003a4c;
    margin-bottom: 1.2rem;
  }

  .subheading {
    font-size: 1.4rem;
    color: var(--color-primary);
  }

  .bodycopy {
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  .project-page {
    padding-top: 9rem;
  }

  .project-header-block {
    margin-bottom: 2rem;
  }

  .project-text-block {
    margin: 2rem 0 3rem 0;
  }

  .project-image-container {
    margin: 0 auto 2rem;
  }

  .title {
    font-size: 3rem;
    line-height: 1;
    color: #003a4c;
    margin-bottom: 1.5rem;
  }

  .subheading {
    font-size: 1.4rem;
    font-weight: var(--font-weight-semibold);
  }

  .bodycopy {
    font-size: 1rem;
    font-weight: var(--font-weight-regular);
  }
}

@media (min-width: 1440px) {
  .project-page {
    padding-top: 9rem;
  }
}

/* Return button */
.return-navigation-block {
  margin: var(--spacing-section);
}

.return-navigation-container {
  text-align: center;
}

.return-label {
  display: inline-block; /* Allows padding and makes it rectangular */
  padding: 10px 20px;
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: var(--font-weight-medium);
  color: var(--color-white); /* Text color */
  background-color: var(--color-primary); /* Button background */
  text-decoration: none;
  transition: all var(--transition-smooth);
}

.return-label:hover {
  background-color: var(--color-secondary); /* Button background */
}


/* ==========================================================================
   9. Disclaimer section
   ========================================================================== */

.disclaimer-block {
  margin-bottom: var(--spacing-section);
  width: 100%;
  padding: 0 var(--spacing-gutter);
}

/* Container-level elements: Max-width constraint with auto centering */
.disclaimer-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  width: 100%;
}

.disclaimer-container {
  display: flex;
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-tertiary);
  justify-content: center;
  text-align: center;
}

.disclaimer-text {
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: var(--font-weight-regular);
  line-height: 1.5;
  color: var(--color-primary);
  margin: 0;
}