/* d:\AI STUDY\Antigravity\260711_arkinest_website\style.css */

@font-face {
  font-family: 'SourceHanSerifK-ExtraLight';
  src: url('assets/fonts/source-han-serif/SourceHanSerifK-ExtraLight.otf') format('opentype');
  font-weight: 200;
  font-style: normal;
}

:root {
  /* Colors */
  --surface: #fcf9f5;
  --surface-dim: #dcdad6;
  --surface-bright: #fcf9f5;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f6f3ef;
  --surface-container: #f0ede9;
  --surface-container-high: #ebe8e4;
  --surface-container-highest: #e5e2de;
  --on-surface: #1c1c19;
  --on-surface-variant: #464740;
  --inverse-surface: #31302e;
  --inverse-on-surface: #f3f0ec;
  --outline: #77786f;
  --outline-variant: #c7c7bd;
  --surface-tint: #5c614d;
  
  --primary: #535845;
  --on-primary: #ffffff;
  --primary-container: #6b705c;
  --on-primary-container: #eff4db;
  --inverse-primary: #c4c9b1;
  
  --secondary: #5f604b;
  --on-secondary: #ffffff;
  --secondary-container: #e2e1c7;
  --on-secondary-container: #63644f;
  
  --tertiary: #894025;
  --on-tertiary: #ffffff;
  --tertiary-container: #a8573b;
  --on-tertiary-container: #ffeee9;
  
  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;
  
  --primary-fixed: #e0e5cc;
  --primary-fixed-dim: #c4c9b1;
  --on-primary-fixed: #191d0e;
  --on-primary-fixed-variant: #444937;
  
  --secondary-fixed: #e5e4ca;
  --secondary-fixed-dim: #c8c8af;
  --on-secondary-fixed: #1c1d0c;
  --on-secondary-fixed-variant: #474835;
  
  --tertiary-fixed: #ffdbcf;
  --tertiary-fixed-dim: #ffb59c;
  --on-tertiary-fixed: #390c00;
  --on-tertiary-fixed-variant: #773219;
  
  --background: #fcf9f5;
  --on-background: #1c1c19;
  --surface-variant: #e5e2de;

  /* Typography Variables */
  --font-display: 'Libre Caslon Text', 'SourceHanSerifK-ExtraLight', serif;
  --font-body: 'Source Sans 3', 'SourceHanSerifK-ExtraLight', sans-serif;
  --font-label: 'Hanken Grotesk', 'SourceHanSerifK-ExtraLight', sans-serif;

  /* Spacing */
  --unit: 4px;
  --gutter: 24px;
  --margin-mobile: 20px;
  --margin-desktop: 64px;
  --max-width: 1280px;
  --stack-sm: 8px;
  --stack-md: 24px;
  --section-gap: 120px;

  /* Shapes */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

/* Typography Classes */
.font-display-lg {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

@media (max-width: 768px) {
  .font-display-lg {
    font-size: 40px;
    line-height: 1.15;
    letter-spacing: -0.01em;
  }
}

.font-headline-lg {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
}

@media (max-width: 768px) {
  .font-headline-lg {
    font-size: 28px;
  }
}

.font-headline-md {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.3;
}

.font-body-lg {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
}

.font-label-md {
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.08em;
}

/* Utilities */
.uppercase {
  text-transform: uppercase;
}
.tracking-widest {
  letter-spacing: 0.1em;
}
.tracking-nav {
  letter-spacing: 0.2em;
}
.tracking-tighter {
  letter-spacing: -0.05em;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding-left: var(--margin-mobile);
  padding-right: var(--margin-mobile);
}
@media (min-width: 768px) {
  .container {
    padding-left: var(--margin-desktop);
    padding-right: var(--margin-desktop);
  }
}

.border-outline {
  border-color: var(--outline);
}

/* Navbar */
.navbar {
  background-color: var(--surface);
  color: var(--primary-container);
  width: 100%;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 50;
  border-bottom: 1px solid var(--outline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--stack-md) var(--margin-mobile);
}

@media (min-width: 768px) {
  .navbar {
    padding: var(--stack-md) var(--margin-desktop);
  }
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
}

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

.nav-link {
  color: var(--outline);
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--tertiary);
}

.nav-link.active {
  color: var(--primary-container);
  border-bottom: 1px solid var(--primary-container);
  padding-bottom: 4px;
}
.nav-link.active:hover {
  border-bottom-color: var(--tertiary);
}

.mobile-menu-btn {
  display: flex;
  color: var(--primary-container);
  transition: color 0.3s ease;
}
.mobile-menu-btn:hover {
  color: var(--tertiary);
}
@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Main Content */
.main-content {
  flex-grow: 1;
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}

/* Hero Filter / Tags */
.filter-tags {
  display: flex;
  gap: 2rem;
  color: var(--outline);
  margin-bottom: var(--stack-md);
  flex-wrap: wrap;
}
.filter-tag {
  cursor: pointer;
  transition: color 0.3s ease;
}
.filter-tag:hover {
  color: var(--tertiary);
}
.filter-tag.active {
  color: var(--primary-container);
  border-bottom: 1px solid var(--primary-container);
  padding-bottom: 4px;
}

/* Project Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: var(--section-gap);
  margin-bottom: var(--section-gap);
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(12, 1fr);
    column-gap: var(--gutter);
  }
}

.project-item {
  border-bottom: 1px solid var(--outline);
  padding-bottom: var(--stack-md);
  cursor: pointer;
}
.project-item.full-width {
  grid-column: span 1;
}
@media (min-width: 768px) {
  .project-item.full-width {
    grid-column: span 12;
  }
}

.project-image-wrapper {
  position: relative;
  width: 100%;
  background-color: var(--surface-container-high);
  margin-bottom: var(--stack-md);
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.aspect-landscape {
  aspect-ratio: 21 / 9;
}
.aspect-portrait {
  aspect-ratio: 4 / 5;
}
.aspect-square {
  aspect-ratio: 1 / 1;
}
.aspect-4-3 {
  aspect-ratio: 4 / 3;
}
.aspect-3-4 {
  aspect-ratio: 3 / 4;
}

.project-image, .project-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) sepia(30%);
  transition: all 0.7s ease-in-out;
}
.project-item:hover .project-image,
.project-item:hover .project-video {
  filter: grayscale(0%) sepia(0%);
  transform: scale(1.02);
}

.project-image-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(107, 112, 92, 0.1);
  transition: background-color 0.5s ease;
}
.project-item:hover .project-image-overlay {
  background-color: transparent;
}

.project-meta {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
}
@media (min-width: 768px) {
  .project-meta.row-layout {
    flex-direction: row;
    align-items: flex-end;
  }
}

.project-title {
  color: var(--primary-container);
  margin-bottom: var(--unit);
  transition: color 0.3s ease;
}
.project-item:hover .project-title {
  color: var(--tertiary);
}
.project-year {
  color: var(--outline);
}

.project-tags {
  display: flex;
  gap: 1rem;
  color: var(--outline);
  margin-top: 1rem;
}
@media (min-width: 768px) {
  .project-tags {
    margin-top: 0;
    text-align: right;
  }
}

/* Split Asymmetric section */
.split-section {
  grid-column: span 1;
  display: grid;
  grid-template-columns: 1fr;
  row-gap: var(--stack-md);
  border-bottom: 1px solid var(--outline);
  padding-bottom: var(--stack-md);
}
@media (min-width: 768px) {
  .split-section {
    grid-column: span 12;
    grid-template-columns: repeat(12, 1fr);
    column-gap: var(--gutter);
  }
}

.split-left {
  grid-column: span 1;
}
@media (min-width: 768px) {
  .split-left {
    grid-column: span 5;
  }
}

.split-right {
  grid-column: span 1;
}
@media (min-width: 768px) {
  .split-right {
    grid-column: span 7;
  }
}

/* CTA Section */
.cta-section {
  margin-top: var(--section-gap);
  padding-top: var(--section-gap);
  border-top: 1px solid var(--outline);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.cta-title {
  color: var(--primary-container);
  margin-bottom: var(--stack-md);
  line-height: 1;
}
.text-huge {
  font-size: 12vw;
}
@media (min-width: 768px) {
  .text-huge {
    font-size: 8vw;
  }
}

.cta-details {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 56rem;
  margin-top: var(--stack-md);
  text-align: left;
  color: var(--outline);
}
@media (min-width: 768px) {
  .cta-details {
    flex-direction: row;
    justify-content: space-between;
  }
}

.cta-details-left p {
  margin-bottom: var(--unit);
}

.cta-details-right {
  margin-top: 1rem;
  max-width: 200px;
}
@media (min-width: 768px) {
  .cta-details-right {
    margin-top: 0;
  }
}

.cta-btn {
  margin-top: var(--section-gap);
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 1px solid var(--primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-container);
  transition: all 0.3s ease;
}
.cta-btn:hover {
  background-color: var(--tertiary);
  border-color: var(--tertiary);
  color: white;
}
.cta-btn .material-symbols-outlined {
  transform: rotate(-45deg);
  transition: transform 0.3s ease;
}
.cta-btn:hover .material-symbols-outlined {
  transform: rotate(0deg);
}

/* Footer */
.footer {
  background-color: var(--primary-container);
  color: var(--on-primary);
  width: 100%;
  margin-top: var(--section-gap);
  border-top: 1px solid var(--outline);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--margin-desktop);
  text-align: center;
}

.footer-brand {
  margin-bottom: var(--stack-md);
}

.footer-links {
  display: flex;
  gap: 2rem;
  margin-bottom: var(--stack-md);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link {
  color: var(--primary-fixed-dim);
  transition: color 0.3s ease;
  cursor: pointer;
}
.footer-link:hover {
  color: var(--tertiary);
}

.footer-copy {
  color: var(--primary-fixed-dim);
  margin-top: var(--stack-md);
}

/* Mobile Nav Menu */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--surface);
  z-index: 40;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
}
.mobile-nav-overlay.open {
  display: flex;
}
.mobile-nav-overlay .nav-link {
  font-size: 24px;
}

/* Collage Grid */
.collage-grid {
  display: flex;
  flex-direction: column;
  gap: var(--stack-md);
  margin-bottom: var(--section-gap);
}

@media (min-width: 768px) {
  .collage-grid {
    flex-direction: row;
    gap: var(--gutter);
    align-items: flex-start;
  }
}

.collage-col {
  display: flex;
  flex-direction: column;
  gap: var(--stack-md);
  flex: 1;
}

.collage-item {
  width: 100%;
}

.collage-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.collage-divider {
  display: none;
}

@media (min-width: 768px) {
  .collage-divider {
    display: block;
    width: 1px;
    background-color: var(--outline);
    align-self: stretch;
    margin: 0 1rem;
  }
}