/* ==========================================================================
   Patrick Schoebel - Portfolio Theme
   Light + Minimal Design System
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
  /* Colors - Distinctive steel blue palette */
  --color-bg: #FDFCFB;
  --color-bg-alt: #F7F6F4;
  --color-text: #4A4A4A;
  --color-text-secondary: #555555;
  --color-text-hover: #374151;
  --color-accent: #265a88;
  --color-accent-hover: #1d4a6e;
  --color-accent-rgb: 38, 90, 136;
  --color-border: #E5E7EB;
  --color-tag-bg: #F3F4F6;
  --color-card-shadow: rgba(0, 0, 0, 0.04);
  --color-placeholder: #777777;
  --color-nav-bg: rgba(38, 90, 136, 0.97);
  --color-nav-text: #ffffff;
  --color-nav-text-active: #ffffff;
  --color-card-bg: var(--color-bg);
  --color-btn-text: #ffffff;
  --color-hero-gradient: rgba(38, 90, 136, 0.03);
  --color-selection: rgba(38, 90, 136, 0.2);
  --color-success-bg: #F0FDF4;
  --color-success-border: #BBF7D0;
  --color-success-text: #166534;
  --color-error-bg: #FEF2F2;
  --color-error-border: #FECACA;
  --color-error-text: #991B1B;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --font-size-sm: 15px;

  /* Spacing Scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Layout */
  --max-width: 1080px;
  --max-width-text: 720px;
  --container-padding: var(--space-6);
  --section-padding: var(--space-20);
  --nav-height: var(--space-16);

  /* Border Radius */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --radius-full: 9999px;

  /* Active underline indicator */
  --underline-offset: -4px;
  --underline-height: 2px;
  --underline-transition: 0.25s ease;

  /* Transitions */
  --transition: 0.2s ease;
}

/* --- Custom Selection Color --- */
::selection {
  background: var(--color-selection);
  color: var(--color-text);
}

::-moz-selection {
  background: var(--color-selection);
  color: var(--color-text);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Skip Link for Accessibility --- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #ffffff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  font-weight: 500;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: var(--space-3);
  outline: 2px solid var(--color-accent-hover);
  outline-offset: 2px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:not(.btn) {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:not(.btn):visited {
  color: var(--color-accent);
}

a:not(.btn):hover,
a:not(.btn):visited:hover {
  color: var(--color-accent-hover);
}

/* Active states - universal rule for all active elements */
.active,
[class*="--active"],
a.active:visited,
a[class*="--active"]:visited {
  color: var(--color-accent-hover);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 {
  font-size: 3rem;
  line-height: 1.17;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.25rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1.25em;
}

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

ul, ol {
  padding-left: 1.5em;
  margin-bottom: 1.25em;
}

li {
  margin-bottom: 0.35em;
}

blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25em;
  margin: 1.5em 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

code {
  background: var(--color-tag-bg);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-xs);
  font-size: 0.9em;
}

pre {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.25em;
  overflow-x: auto;
  margin-bottom: 1.5em;
}

pre code {
  background: none;
  padding: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5em 0;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section--alt {
  background-color: var(--color-bg-alt);
}

.section--compact {
  padding: 0;
}

.text-content {
  max-width: var(--max-width-text);
}

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

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: none;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  font-size: var(--font-size-sm);
  line-height: 1;
}

.nav a.nav__logo,
.nav a.nav__logo:visited {
  position: relative;
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1;
  color: var(--color-nav-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  flex-shrink: 0;
  transition: color var(--transition);
}

.nav a.nav__logo::after {
  content: '';
  position: absolute;
  bottom: var(--underline-offset);
  left: 0;
  width: 100%;
  height: var(--underline-height);
  background: var(--color-nav-text-active);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--underline-transition);
}

.nav a.nav__logo:hover,
.nav a.nav__logo:visited:hover,
.nav a.nav__logo.active,
.nav a.nav__logo.active:visited {
  color: var(--color-nav-text-active);
}

.nav a.nav__logo:hover::after {
  transform: scaleX(1);
}

.nav a.nav__logo.active::after {
  transform: scaleX(1);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  padding: 0;
  margin: 0;
  margin-left: auto;
}

.nav__links li {
  margin: 0;
}

a.nav__link,
a.nav__link:visited {
  position: relative;
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1;
  color: var(--color-nav-text);
  text-decoration: none;
  transition: color var(--transition);
}

.nav a.nav__link::after {
  content: '';
  position: absolute;
  bottom: var(--underline-offset);
  left: 0;
  width: 100%;
  height: var(--underline-height);
  background: var(--color-nav-text-active);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--underline-transition);
}

.nav a.nav__link:hover,
.nav a.nav__link:visited:hover {
  color: var(--color-nav-text-active);
}

.nav a.nav__link.nav__link--active,
.nav a.nav__link.nav__link--active:visited {
  color: var(--color-nav-text-active);
}

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

.nav a.nav__link.nav__link--active::after {
  transform: scaleX(1);
}

.nav a.nav__link:focus,
.nav a.nav__logo:focus {
  outline: 2px solid var(--color-nav-text-active);
  outline-offset: 2px;
}

.nav__link--external {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.nav a.nav__link.nav__link--external::after {
  width: calc(100% - 12px - var(--space-1));
}

.external-icon {
  width: 12px;
  height: 12px;
  transition: transform var(--transition);
}


.nav__lang {
  color: var(--color-nav-text);
  margin-left: 90px;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav__lang a {
  position: relative;
  line-height: 1;
  color: var(--color-nav-text);
  font-weight: 500;
}

.nav__lang a::after {
  content: '';
  position: absolute;
  bottom: var(--underline-offset);
  left: 0;
  width: 100%;
  height: var(--underline-height);
  background: var(--color-nav-text-active);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--underline-transition);
}

.nav__lang a:hover {
  color: var(--color-nav-text-active);
}

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

.nav__lang .active {
  color: var(--color-nav-text-active);
  font-weight: 600;
}

.nav__lang .active::after {
  transform: scaleX(1);
}

.nav__lang .separator,
.nav__mobile-lang .separator,
.footer__lang .separator {
  margin: 0 var(--space-2);
  opacity: 0.4;
}

.nav__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-nav-text-active);
}

.nav__hamburger svg {
  width: var(--space-6);
  height: var(--space-6);
  display: block;
}

.nav__mobile {
  display: none;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--container-padding) var(--space-6);
}

.nav__mobile.is-open {
  display: block;
}

.nav__mobile-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav__mobile-links li {
  margin: 0;
}

.nav__mobile-links a.nav__link,
.nav__mobile-links a.nav__link:visited {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  position: static;
}

.nav__mobile-links a.nav__link::after {
  display: none;
}

.nav__mobile-links a.nav__link.nav__link--active,
.nav__mobile-links a.nav__link.nav__link--active:visited,
.nav__mobile-links a.nav__link:hover,
.nav__mobile-links a.nav__link:visited:hover {
  color: var(--color-accent-hover);
}

.nav__mobile-links a.nav__link.nav__link--external {
  display: flex;
}


.nav__mobile-lang {
  padding-top: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.nav__mobile-lang a {
  display: inline;
  padding: 0;
  font-size: var(--font-size-sm);
  border: none;
  color: var(--color-text-secondary);
}

.nav__mobile-lang .active {
  color: var(--color-accent-hover);
  font-weight: 600;
}

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

.nav__mobile-lang a.active {
  color: var(--color-accent-hover);
}

/* --- Hero Section --- */
.hero {
  padding: var(--section-padding) 0 var(--space-16);
  background: linear-gradient(180deg, var(--color-hero-gradient) 0%, var(--color-bg) 100%);
}

.hero__inner {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.hero__portrait {
  flex-shrink: 0;
  display: block;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-bg-alt);
  box-shadow: 0 2px 8px var(--color-card-shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.page-home .hero__portrait {
  animation: fadeInUp 0.6s ease-out both;
}

.hero__portrait:hover {
  box-shadow: 0 12px 40px var(--color-card-shadow);
  transform: translateY(-2px);
}

.hero__portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__content {
  flex: 1;
}

.page-home .hero__content {
  animation: fadeInUp 0.6s ease-out 0.15s both;
}

.hero__name {
  font-family: var(--font-sans);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.hero__title {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  font-weight: 400;
  margin-bottom: var(--space-5);
}

.hero__tagline {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-7);
  line-height: 1.6;
}

/* --- Social Icons (shared) --- */
.social {
  display: flex;
  gap: var(--space-3);
}

.social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--space-8);
  height: var(--space-8);
  border-radius: 50%;
  background: var(--color-text-secondary);
  color: var(--color-bg);
  transition: background var(--transition), color var(--transition);
}

.social a:hover,
.social a:visited:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.social svg {
  width: 15px;
  height: 15px;
  display: block;
  flex-shrink: 0;
}

/* Bluesky icon needs manual centering adjustment */
.social a:last-child svg {
  transform: translate(1px, 1px);
}

.hero__social {
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-7);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

/* Both buttons same style - steel blue bg, light text */
.btn--primary,
.btn--secondary,
.btn-primary,
.btn-secondary {
  background: var(--color-accent);
  color: var(--color-btn-text);
  border: 1px solid var(--color-accent);
}

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

/* Ensure button colors override link hover */
a.btn:hover,
a.btn--primary:hover,
a.btn--secondary:hover,
a.btn-primary:hover,
a.btn-secondary:hover {
  color: var(--color-btn-text);
}

/* Secondary/Reset button */
.btn-danger {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
}

.btn-danger:hover {
  background: var(--color-text-hover);
  border-color: var(--color-text-hover);
  color: var(--color-bg);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

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

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

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

/* Focus states for accessibility */
.btn:focus,
.btn--primary:focus,
.btn--secondary:focus,
.btn--accent:focus {
  outline: 2px solid var(--color-accent-hover);
  outline-offset: 2px;
}

.btn--lg {
  padding: 14px var(--space-8);
  font-size: 1rem;
}

/* --- Tags --- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--color-tag-bg);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  line-height: 1.5;
}

/* --- Cards --- */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: 0 8px 30px var(--color-card-shadow);
  transform: translateY(-2px);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__body {
  padding: var(--space-6);
}

.card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.card__title a {
  color: var(--color-text);
  text-decoration: none;
}

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

.card__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.card__meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

/* --- Portfolio Filter --- */
.portfolio-filters {
  display: flex;
  gap: var(--space-10);
  margin: var(--space-8) 0;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.portfolio-filters.fade-right {
  -webkit-mask-image: linear-gradient(90deg, #000 85%, transparent 100%);
  mask-image: linear-gradient(90deg, #000 85%, transparent 100%);
}

.portfolio-filters.fade-left {
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 15%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 15%);
}

.portfolio-filters.fade-both {
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 15%, #000 85%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 15%, #000 85%, transparent 100%);
}

.portfolio-filters::-webkit-scrollbar {
  display: none;
}

.portfolio-filter {
  display: flex;
  align-items: center;
}

.filter-divider {
  width: 1px;
  align-self: stretch;
  margin: var(--space-1) 0;
  background: var(--color-border);
  flex-shrink: 0;
}

.filter-pills {
  display: flex;
  gap: var(--space-2);
  flex-wrap: nowrap;
}


.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
  padding: var(--space-3) var(--space-7);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-accent);
  background: transparent;
  color: var(--color-accent);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
  line-height: 1.4;
}

.filter-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-btn-text);
}

.filter-btn--active {
  background: var(--color-accent);
  color: var(--color-btn-text);
  border-color: var(--color-accent);
}

.filter-btn--active:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-btn-text);
}

/* --- Featured Cards (large) --- */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-10);
}

.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px var(--color-card-shadow);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition);
}

.page-home .featured-card {
  animation: fadeInUp 0.6s ease-out both;
}

.page-home .featured-card:nth-child(1) { animation-delay: 0.1s; }
.page-home .featured-card:nth-child(2) { animation-delay: 0.2s; }
.page-home .featured-card:nth-child(3) { animation-delay: 0.3s; }
.page-home .featured-card:nth-child(4) { animation-delay: 0.4s; }

.featured-card:hover {
  box-shadow: 0 12px 40px var(--color-card-shadow);
  transform: translateY(-2px);
  color: inherit;
}

.featured-card:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.featured-card__image {
  background: linear-gradient(135deg, var(--color-bg-alt), var(--color-bg));
  overflow: hidden;
  height: 100%;
  min-height: 0;
  position: relative;
}

.card-collage {
  position: absolute;
  inset: -14% -15% -25% -30%;
  columns: 3;
  column-gap: 12px;
  padding: 0;
  overflow: visible;
  transform: rotate(-10deg);
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.featured-card:hover .card-collage {
  transform: rotate(-10deg) scale(1.03);
}

.card-collage--duo {
  columns: 2;
  inset: -15% -30% -15%;
}

.card-collage--duo .card-collage__img {
  border-radius: 0.8rem;
}

.card-collage--single {
  columns: 1;
  transform: rotate(-3deg);
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.featured-card:hover .card-collage--single {
  transform: rotate(-3deg) scale(1.03);
}

.card-collage--single .card-collage__img {
  border-radius: 0.8rem;
  margin-bottom: 0;
  box-shadow: none;
  border: none;
}

.card-collage__img {
  display: inline-block;
  width: 100%;
  height: auto;
  margin-bottom: 12px;
  border-radius: 1.2rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--color-border);
  object-fit: cover;
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}


.featured-card__body {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: var(--space-10);
}

.featured-card__title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.featured-card__description {
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.featured-card__tags {
  margin-bottom: var(--space-5);
}

.featured-card__cta {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

.featured-card__cta::after {
  content: '\2192';
  transition: transform var(--transition);
}

.featured-card:hover .featured-card__cta {
  color: var(--color-accent-hover);
}

.featured-card:hover .featured-card__cta::after {
  transform: translateX(4px);
}

/* --- Secondary Projects Grid --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.project-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-7);
  transition: box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  box-shadow: 0 8px 30px var(--color-card-shadow);
  transform: translateY(-2px);
  color: inherit;
}

.project-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.project-card__when {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.project-card__description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* --- Section Headers --- */
.section-header {
  margin-bottom: var(--space-4);
}

.page-home .section-header {
  animation: fadeInUp 0.5s ease-out both;
}

.section-header h2 {
  margin-bottom: var(--space-2);
}

.section-header h1 {
  margin-bottom: var(--space-6);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 650px;
}

.section-footer {
  text-align: center;
  margin-top: var(--space-6);
}

/* --- About Teaser --- */
.about-teaser {
  max-width: var(--max-width-text);
}

.page-home .about-teaser {
  animation: fadeInUp 0.5s ease-out both;
}

.about-teaser h2 {
  margin-bottom: var(--space-2);
}

.about-teaser p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.about-teaser .arrow-link {
  margin-top: var(--space-2);
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-10);
}

.testimonial {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-8);
  margin: 0;
  font-style: normal;
  display: flex;
  flex-direction: column;
  border-left: 3px solid var(--color-accent);
}

.page-home .testimonial {
  animation: fadeInUp 0.6s ease-out both;
}

.page-home .testimonial:nth-child(1) { animation-delay: 0.1s; }
.page-home .testimonial:nth-child(2) { animation-delay: 0.2s; }

.testimonial__text {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  flex: 1;
}

.testimonial__text::before {
  content: '\201C';
  font-size: 1.5em;
  line-height: 0;
  vertical-align: -0.2em;
  color: var(--color-accent);
  margin-right: 2px;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__name {
  display: block;
  font-style: normal;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.testimonial__role {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Portfolio Empty State */
.portfolio-empty {
  margin-top: var(--space-16);
  padding: var(--space-8);
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  text-align: center;
}

.portfolio-empty p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.portfolio-empty__cta {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.portfolio-empty__reset {
  display: block;
  margin: var(--space-4) auto 0;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.portfolio-empty__reset:hover {
  color: var(--color-text);
}

.arrow-link {
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

.arrow-link::after {
  content: '\2192';
  transition: transform var(--transition);
}

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

.arrow-link:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.arrow-link:hover::after {
  transform: translateX(4px);
}

/* --- Breadcrumb (lightweight) --- */
.breadcrumb-link {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.breadcrumb-link:hover,
.breadcrumb-link:visited:hover {
  color: var(--color-accent-hover);
}

/* --- Case Study --- */
.casestudy-hero {
  padding: var(--section-padding) 0 var(--space-10);
  border-bottom: 1px solid var(--color-border);
}

.casestudy-hero__title {
  margin-bottom: var(--space-3);
}

.casestudy-hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
}

.casestudy-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
  font-size: 0.875rem;
}

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

.casestudy-hero__meta-label {
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: 2px;
}

.casestudy-hero__image {
  margin-top: var(--space-10);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg-alt);
  aspect-ratio: 16 / 9;
}

.casestudy-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.casestudy-content {
  max-width: var(--max-width);
}

.casestudy-content h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  clear: both;
}

.casestudy-content h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.casestudy-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.casestudy-content img {
  border-radius: var(--radius-sm);
  margin: 1.5em 0;
}

/* Phone screenshots: float with text wrap, alternating sides */
.casestudy-content p:has(> img.phone-screenshot) {
  float: right;
  clear: right;
  display: flex;
  max-width: 240px;
  margin: 0.25rem 0 1.5rem 2rem;
  padding: 0;
  font-size: 0;
  line-height: 0;
  overflow: hidden;
  border-radius: 1.6rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--color-border);
}

.casestudy-content p:has(> img.phone-left) {
  clear: left;
  float: left;
  margin: 0.25rem 2rem 1.5rem 0;
}

.casestudy-content img.phone-screenshot {
  display: block;
  width: 100%;
  transform: scale(1.03);
}

@media (max-width: 740px) {
  .casestudy-content p:has(> img.phone-screenshot) {
    float: none;
    max-width: 55%;
    margin: 2rem auto;
  }
  .casestudy-content p:has(> img.phone-left) {
    clear: none;
  }
}

/* Wide screenshots (web, desktop) */
.casestudy-content img.wide-screenshot {
  display: block;
  max-width: 100%;
  margin: 2em auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--color-border);
}

/* Screenshot captions */
.casestudy-content .screenshot-caption {
  text-align: center;
  font-size: 0.8rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--color-placeholder);
  margin-top: -2em;
  margin-bottom: 2em;
}

/* Case Study Summary */
.casestudy-summary-section {
  padding: var(--space-8) 0;
}

.casestudy-summary {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  max-width: var(--max-width-text);
}

.casestudy-summary__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.casestudy-summary p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0;
}

/* Metrics Box */
.metrics-box {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  max-width: var(--max-width-text);
}

.metrics-box__heading {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.metrics-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6) var(--space-8);
}

@media (max-width: 640px) {
  .metrics-grid {
    flex-direction: column;
    gap: var(--space-4);
  }
}

.metric__value {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.metric__value svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.metric__label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
  line-height: 1.3;
}

/* Checklist (outcome sections) */
.casestudy-content ul.checklist {
  list-style: none;
  padding-left: 0;
}

.casestudy-content ul.checklist li {
  position: relative;
  padding-left: 2em;
  margin-bottom: 0.5em;
}

.casestudy-content ul.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 1.15em;
  height: 1.15em;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='12' fill='%23166534'/%3E%3Cpath d='M7 12.5l3 3 7-7' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
}

/* Case Study CTA */
.casestudy-cta {
  margin-top: var(--space-16);
  padding: var(--space-8);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-align: center;
}

.casestudy-cta p {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.casestudy-cta__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-accent);
}

.casestudy-cta__link::after {
  content: '\2192';
  transition: transform var(--transition);
}

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

.casestudy-cta__link:hover::after {
  transform: translateX(4px);
}

.casestudy-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-10) 0;
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-16);
}

.casestudy-nav a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

/* --- Default Page Content --- */
.page-content {
  max-width: var(--max-width-text);
  padding: var(--section-padding) 0;
}

.page-content h1 {
  margin-bottom: var(--space-6);
}

.page-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.page-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.page-content img {
  border-radius: var(--radius-sm);
  margin: 1.5em 0;
  max-width: 320px;
}

.page-content a:not(.btn),
.form-section a:not(.btn),
.casestudy-content a:not(.btn) {
  font-weight: 500;
  text-decoration: underline;
  text-decoration-thickness: var(--underline-height);
  text-underline-offset: 4px;
}

.page-content a:not(.btn):hover,
.form-section a:not(.btn):hover,
.casestudy-content a:not(.btn):hover {
  color: var(--color-accent-hover);
}

.page-content .external-link,
.form-section .external-link,
.casestudy-content .external-link,
.casestudy-hero__meta-item .external-link {
  display: inline;
}

.page-content .external-link .external-icon,
.form-section .external-link .external-icon,
.casestudy-content .external-link .external-icon,
.casestudy-hero__meta-item .external-link .external-icon {
  display: inline;
  vertical-align: baseline;
  margin-left: var(--space-1);
  width: 0.75em;
  height: 0.75em;
}

.page-content .external-link:hover .external-icon,
.form-section .external-link:hover .external-icon,
.casestudy-content .external-link:hover .external-icon,
.casestudy-hero__meta-item .external-link:hover .external-icon {
  transform: translate(2px, -2px);
}


/* --- Blog --- */
.blog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.blog-item {
  display: block;
  padding: var(--space-7);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition);
}

.blog-item:hover {
  box-shadow: 0 8px 30px var(--color-card-shadow);
  transform: translateY(-2px);
  color: inherit;
}

.blog-item__date {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.blog-item__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.blog-item__summary {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Forms --- */
.form-section {
  max-width: var(--max-width-text);
  padding: var(--section-padding) 0;
}

.form-section h1 {
  margin-bottom: var(--space-6);
}

.form-section > p {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.contact-email-alt {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.contact-email-alt__label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.contact-email-alt__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.contact-email-alt__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.contact-email-alt__btn svg {
  flex-shrink: 0;
}

.contact-email-alt__copy {
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--transition);
  display: flex;
  align-items: center;
}

.contact-email-alt__copy:hover {
  color: var(--color-accent);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label,
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-input,
input[type="text"],
input[type="email"],
input[type="url"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: 1rem;
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-card-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.1);
}

textarea {
  min-height: 160px;
  resize: vertical;
}

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

.form-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.form-actions .button,
.form-actions button[type="submit"],
.form-actions button[type="reset"],
.form-actions input[type="submit"],
.form-actions input[type="reset"] {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-7);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-text);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  line-height: 1.4;
  background: var(--color-text);
  color: var(--color-bg);
}

.form-actions .btn-danger {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-text);
}

.form-actions .btn-danger:hover {
  background: var(--color-text-hover);
  border-color: var(--color-text-hover);
  color: var(--color-bg);
}

.form-actions .button:hover,
.form-actions button[type="submit"]:hover,
.form-actions button[type="reset"]:hover,
.form-actions input[type="submit"]:hover,
.form-actions input[type="reset"]:hover {
  background: var(--color-text-hover);
  border-color: var(--color-text-hover);
  color: var(--color-bg);
}

/* GRAV form plugin compatibility */
.form-field {
  margin-bottom: 1.5rem;
}

.form-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-data {
  display: block;
  width: 100%;
}

/* Form success message */
.form-messages {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: var(--font-size-sm);
}

.form-messages.success {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-text);
}

.form-messages.error {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
}

/* Thank you page */
.thankyou {
  text-align: center;
  padding: var(--section-padding) 0;
}

.thankyou h1 {
  margin-bottom: var(--space-4);
}

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

/* --- Footer --- */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-10);
}

.footer__brand {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.footer__tagline {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  max-width: 280px;
}

.footer__social {
  margin-top: var(--space-4);
}

.footer__links {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__links a,
.footer__lang a,
.footer__lang span.active {
  position: relative;
  font-size: 0.875rem;
  line-height: 1;
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: none;
}

.footer__links a::after,
.footer__lang a::after,
.footer__lang span.active::after {
  content: '';
  position: absolute;
  bottom: var(--underline-offset);
  left: 0;
  width: 100%;
  height: var(--underline-height);
  background: var(--color-accent-hover);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--underline-transition);
}

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

.footer__links a:hover::after,
.footer__links a:visited:hover::after,
.footer__lang a:hover::after,
.footer__lang a:visited:hover::after {
  transform: scaleX(1);
}

.footer__links a.active,
.footer__links a.active:visited,
.footer__lang a.active,
.footer__lang a.active:visited,
.footer__lang span.active {
  color: var(--color-accent-hover);
}

.footer__links a.active::after,
.footer__lang a.active::after,
.footer__lang span.active::after {
  transform: scaleX(1);
}

.footer__right {
  text-align: right;
}

.footer__lang {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
}

.footer__lang-options {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
}

.footer__copy {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.875rem;
  }

  .hero__inner {
    gap: var(--space-12);
  }

  .featured-card {
    grid-template-columns: 1fr 1fr;
  }

  .featured-card__body {
    padding: var(--space-7);
  }
}

@media (max-width: 960px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: block;
  }

  .nav__lang {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 56px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.625rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .hero__inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-8);
  }

  .hero__portrait {
    width: 160px;
    height: 160px;
  }

  .hero__social {
    justify-content: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__name {
    font-size: 2rem;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .testimonial {
    padding: var(--space-6);
  }

  .featured-card {
    grid-template-columns: 1fr;
  }

  .featured-card__image {
    aspect-ratio: 16 / 9;
    height: auto;
  }

  .card-collage {
    gap: 10px;
    padding: 16px;
    transform: rotate(-6deg) scale(1.05);
  }

  .featured-card:hover .card-collage {
    transform: rotate(-6deg) scale(1.1);
  }

  .featured-card__body {
    padding: var(--space-6);
  }

  .portfolio-filters {
    flex-direction: column;
    gap: var(--space-4);
  }

  .filter-divider {
    width: auto;
    height: 1px;
    align-self: stretch;
    margin: 0;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .casestudy-hero__meta {
    gap: var(--space-4);
  }
}

@media (max-width: 640px) {
  :root {
    --section-padding: var(--space-12);
    --container-padding: var(--space-4);
  }

  body {
    font-size: 16px;
  }

  .hero {
    padding: var(--space-12) 0 var(--space-8);
  }

  .hero__portrait {
    width: 120px;
    height: 120px;
  }

  .hero__name {
    font-size: 1.75rem;
  }

  .featured-card__title {
    font-size: 1.25rem;
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-8);
  }

  .footer__right {
    text-align: left;
  }

  .footer__links {
    justify-content: flex-start;
  }

  .btn {
    padding: 10px var(--space-6);
  }

  .nav__lang {
    margin-left: auto;
  }
}

/* --- Utilities --- */
.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;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-4); }
.mb-3 { margin-bottom: var(--space-6); }
.mb-4 { margin-bottom: var(--space-8); }
.mt-4 { margin-top: var(--space-8); }
.mt-6 { margin-top: var(--space-12); }

/* ==========================================================================
   Dark Mode - Variables-only override
   ========================================================================== */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0F172A;
    --color-bg-alt: #1E293B;
    --color-text: #E2E8F0;
    --color-text-secondary: #94A3B8;
    --color-text-hover: #CBD5E1;
    --color-accent: #6B9DC9;
    --color-accent-hover: #93C5FD;
    --color-accent-rgb: 107, 157, 201;
    --color-border: #334155;
    --color-tag-bg: #334155;
    --color-card-shadow: rgba(0, 0, 0, 0.4);
    --color-placeholder: #64748B;
    --color-nav-bg: rgba(30, 41, 59, 0.97);
    --color-nav-text: #ffffff;
    --color-nav-text-active: #ffffff;
    --color-card-bg: #1E293B;
    --color-btn-text: #0F172A;
    --color-hero-gradient: rgba(107, 157, 201, 0.05);
    --color-selection: rgba(107, 157, 201, 0.3);
    --color-success-bg: #064E3B;
    --color-success-border: #065F46;
    --color-success-text: #6EE7B7;
    --color-error-bg: #7F1D1D;
    --color-error-border: #991B1B;
    --color-error-text: #FCA5A5;
  }

  /* Phone screenshot shadow: use bg-alt for visibility on dark backgrounds */
  .casestudy-content p:has(> img.phone-screenshot) {
    box-shadow: 0 8px 30px var(--color-bg-alt), 0 2px 8px var(--color-bg-alt);
  }

  /* Social icon hover: accent-colored circle in dark mode */
  .social a:hover,
  .social a:visited:hover {
    background: var(--color-accent);
    color: var(--color-bg);
  }
}