/* =========================
   NGLA LANDING PAGE STYLES
   Minimal gothic industrial aesthetic
   ========================= */

/* =========================
   BASE STYLES
   ========================= */
html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  height: 100vh;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-body);
  line-height: var(--ngla-lh-body);
  letter-spacing: var(--ngla-track-sans-default);
  transition: background-color var(--transition-base), color var(--transition-base);
  margin: 0;
  padding: 0;
  height: 100%;
}

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

/* =========================
   NAVIGATION
   ========================= */
.nav {
  position: fixed;
  top: 50%;
  right: var(--ngla-space-lg);
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: var(--ngla-space-md);
}

.nav-dot {
  width: 8px;
  height: 8px;
  border: 1px solid var(--border);
  background: transparent;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.nav-dot:hover {
  border-color: var(--text);
}

.nav-dot.active {
  background: var(--text);
  border-color: var(--text);
}

/* =========================
   LANGUAGE TOGGLE
   ========================= */
.lang-toggle {
  position: fixed;
  top: var(--ngla-space-lg);
  right: calc(var(--ngla-space-lg) + 56px);
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: transparent;
  z-index: 1000;
  transition: border-color var(--transition-base);
  font-family: var(--ngla-font-mono);
  font-weight: var(--ngla-mono-medium);
  font-size: 11px;
  color: var(--text);
  letter-spacing: 0.05em;
}

.lang-toggle:hover {
  border-color: var(--text);
}

.lang-toggle:active {
  border-width: 2px;
}

/* =========================
   THEME TOGGLE
   ========================= */
.theme-toggle {
  position: fixed;
  top: var(--ngla-space-lg);
  right: var(--ngla-space-lg);
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: transparent;
  z-index: 1000;
  transition: border-color var(--transition-base);
}

.theme-toggle:hover {
  border-color: var(--text);
}

.theme-toggle:active {
  border-width: 2px;
}

.theme-toggle-icon::before {
  content: '';
  display: block;
  width: 16px;
  height: 16px;
  margin: 12px;
  border-radius: 50%;
  background: var(--text);
  transition: background var(--transition-base);
}

:root[data-theme="light"] .theme-toggle-icon::before {
  background: var(--text);
  box-shadow: inset -4px -4px 0 0 var(--bg);
}

/* =========================
   SECTIONS - Snap scroll
   ========================= */
section {
  scroll-snap-align: start;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Force snap stop on these sections only */
.hero,
.what,
.contact {
  scroll-snap-stop: always;
}

/* =========================
   HERO SECTION
   ========================= */
.hero {
  position: relative;
  text-align: center;
  padding: var(--ngla-space-2xl) 0;
}

/* Logo fixed top-left */
.logo-fixed {
  position: fixed;
  top: var(--ngla-space-lg);
  left: var(--ngla-space-lg);
  z-index: 999;
  display: block;
}

.logo-icon {
  width: 48px;
  height: auto;
  filter: brightness(0) invert(1);
  transition: opacity var(--transition-base);
}

.logo-fixed:hover .logo-icon {
  opacity: 0.7;
}

:root[data-theme="light"] .logo-icon {
  filter: brightness(0) invert(0);
}

/* Wordmark centered */
.wordmark {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-medium);
  font-size: var(--ngla-size-wordmark);
  line-height: var(--ngla-lh-tight);
  letter-spacing: var(--ngla-track-serif-uppercase);
  text-transform: uppercase;
  margin: 0 0 var(--ngla-space-xl) 0;
  text-align: center;
}

.statement {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-body);
  line-height: var(--ngla-lh-body);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--ngla-space-xl);
  left: 50%;
  width: 24px;
  height: 24px;
  border: 1px solid var(--border);
  border-width: 0 1px 1px 0;
  transform: translateX(-50%) rotate(45deg);
  transition: border-color var(--transition-base);
}

.scroll-indicator:hover {
  border-color: var(--text);
}

/* =========================
   WHAT SECTION
   ========================= */
.what {
  text-align: center;
  scroll-snap-stop: always;
}

.what h2 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-medium);
  font-size: var(--ngla-size-h2);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  margin-bottom: var(--ngla-space-lg);
}

.what-intro {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-body);
  line-height: var(--ngla-lh-body);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--ngla-space-xl) auto;
}

.what-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ngla-space-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.what-item {
  text-align: left;
  border: 1px solid var(--border);
  padding: var(--ngla-space-lg);
  transition: border-color var(--transition-base);
}

.what-item:hover {
  border-color: var(--text-secondary);
}

.what-item h3 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-regular);
  font-size: var(--ngla-size-h3);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  margin-bottom: var(--ngla-space-md);
}

.what-item p {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-small);
  line-height: 1.6;
  color: var(--text-secondary);
}

/* =========================
   PROCESS SECTION
   ========================= */
.process {
  text-align: center;
  scroll-snap-stop: always;
}

.process h2 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-medium);
  font-size: var(--ngla-size-h2);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  margin-bottom: var(--ngla-space-xl);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--ngla-space-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.process-step {
  text-align: left;
  border: 1px solid var(--border);
  padding: var(--ngla-space-lg);
  transition: border-color var(--transition-base);
}

.process-step:hover {
  border-color: var(--text-secondary);
}

.process-number {
  font-family: var(--ngla-font-mono);
  font-weight: var(--ngla-mono-medium);
  font-size: var(--ngla-size-micro);
  color: var(--text-secondary);
  display: block;
  margin-bottom: var(--ngla-space-sm);
  letter-spacing: 0.1em;
}

.process-step h3 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-regular);
  font-size: var(--ngla-size-h3);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  margin-bottom: var(--ngla-space-md);
}

.process-step p {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-small);
  line-height: 1.6;
  color: var(--text-secondary);
}

/* =========================
   PROJECTS SECTION - Carousel
   ========================= */
.projects {
  flex-direction: column;
  scroll-snap-stop: always;
}

.projects .container {
  width: 100%;
  max-width: 1400px;
  display: flex;
  flex-direction: column;
  gap: var(--ngla-space-xl);
}

.projects h2 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-medium);
  font-size: var(--ngla-size-h2);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  text-align: center;
}

/* Carousel wrapper with navigation */
.carousel-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--ngla-space-md);
}

/* Carousel container with horizontal scroll snap */
.project-carousel {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  gap: 0;
  flex: 1;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.project-carousel::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

/* Each slide shows 2 projects */
.project-slide {
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  gap: var(--ngla-space-xl);
  min-width: 100%;
  width: 100%;
  flex-shrink: 0;
  padding: 0 var(--ngla-space-md);
}

/* Individual project card - fixed 50% width */
.project {
  width: calc(50% - var(--ngla-space-xl) / 2);
  flex-shrink: 0;
  flex-grow: 0;
}

.project-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--border);
  transition: border-color var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.project-link:hover {
  border-color: var(--text-secondary);
}

.project-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--border);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-base);
}

/* Fallback for missing images */
.project-image img[src*="project-01.png"]::before,
.project-image img[src*="project-02.png"]::before,
.project-image img[src*="project-03.png"]::before,
.project-image img[src*="project-04.png"]::before {
  content: attr(alt);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-family: var(--ngla-font-mono);
  font-size: var(--ngla-size-micro);
  color: var(--text-secondary);
}

.project-link:hover .project-image img {
  opacity: 0.85;
}

.project-content {
  padding: var(--ngla-space-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--ngla-space-md);
}

.project-year,
.project-stack {
  font-family: var(--ngla-font-mono);
  font-weight: var(--ngla-mono-regular);
  font-size: var(--ngla-size-micro);
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.project-content h3 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-regular);
  font-size: var(--ngla-size-h3);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  margin-bottom: var(--ngla-space-md);
}

.project-content p {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-small);
  line-height: 1.5;
  color: var(--text-secondary);
}

/* Project placeholder styles */
.project-placeholder {
  opacity: 0.3;
}

.project-image-empty {
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-next {
  font-family: var(--ngla-font-mono);
  font-weight: var(--ngla-mono-medium);
  font-size: var(--ngla-size-h3);
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

/* Carousel navigation arrows */
.carousel-nav {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  transition: border-color var(--transition-base);
  flex-shrink: 0;
}

.carousel-nav:hover {
  border-color: var(--text);
}

.carousel-nav:active {
  border-width: 2px;
}

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

.carousel-arrow {
  display: block;
  width: 10px;
  height: 10px;
  margin: 15px auto;
  border: 1px solid var(--text);
  border-width: 0 1px 1px 0;
}

.carousel-arrow-left {
  transform: rotate(135deg);
}

.carousel-arrow-right {
  transform: rotate(-45deg);
}

/* Carousel dots indicator */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--ngla-space-md);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border: 1px solid var(--border);
  background: transparent;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.carousel-dot:hover {
  border-color: var(--text);
}

.carousel-dot.active {
  background: var(--text);
  border-color: var(--text);
}

/* =========================
   CONTACT SECTION
   ========================= */
.contact {
  text-align: center;
  flex-direction: column;
  justify-content: space-between;
}

.contact h2 {
  font-family: var(--ngla-font-serif);
  font-weight: var(--ngla-serif-medium);
  font-size: var(--ngla-size-h2);
  line-height: var(--ngla-lh-title);
  letter-spacing: var(--ngla-track-serif-default);
  margin-bottom: var(--ngla-space-lg);
}

.contact-email {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-body);
  color: var(--text);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.contact-email:hover {
  border-bottom-color: var(--text);
}

/* =========================
   FOOTER
   ========================= */
.contact .container {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  min-height: 100vh;
  padding: var(--ngla-space-2xl) var(--ngla-container-padding);
}

.contact-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.footer {
  padding: var(--ngla-space-xl) 0;
  text-align: center;
  width: 100%;
}

.footer-text {
  font-family: var(--ngla-font-sans);
  font-weight: var(--ngla-sans-regular);
  font-size: var(--ngla-size-small);
  color: var(--text-secondary);
  margin-bottom: var(--ngla-space-sm);
}

.footer-year {
  font-family: var(--ngla-font-mono);
  font-weight: var(--ngla-mono-regular);
  font-size: var(--ngla-size-micro);
  color: var(--text-secondary);
}

/* =========================
   RESPONSIVE DESIGN
   ========================= */

/* Mobile (<640px) */
@media (max-width: 639px) {
  .wordmark {
    font-size: 56px;
  }

  .logo-fixed {
    top: var(--ngla-space-md);
    left: var(--ngla-space-md);
  }

  .logo-icon {
    width: 36px;
  }

  .hero {
    min-height: 80vh;
    padding: var(--ngla-space-xl) 0;
  }

  .project-grid {
    grid-template-columns: 1fr;
    gap: var(--ngla-space-lg);
  }

  .lang-toggle {
    top: var(--ngla-space-md);
    right: calc(var(--ngla-space-md) + 56px);
  }

  .theme-toggle {
    top: var(--ngla-space-md);
    right: var(--ngla-space-md);
  }

  .nav {
    display: none;
  }

  .scroll-indicator {
    display: none;
  }

  section {
    scroll-snap-align: start;
    min-height: 100vh;
  }

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

  .project-slide {
    grid-template-columns: 1fr;
  }

  .carousel-nav {
    display: none;
  }

  .carousel-wrapper {
    gap: 0;
  }

  .what-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }
}

/* Tablet (640px-1024px) */
@media (min-width: 640px) and (max-width: 1023px) {
  .wordmark {
    font-size: 70px;
  }

  .logo-icon {
    width: 70px;
  }
}

/* Desktop (>1024px) - styles already defined above */