@import url("https://fonts.googleapis.com/css2?family=Marcellus&display=swap");
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f9f9fb;
  --bg-tertiary: #f1f1f4;
  --text-primary: #121214;
  --text-tertiary: #ffffff;
  --text-secondary: #707075;
  --text-muted: #8e8e93;
  --border-color: #e2e2e7;
  --border-hover: #8e8e93;
  --accent: #000000;
  --accent-muted: #1c1c1e;
  --code-bg: #1c1c1e;
  --code-text: #f5f5f7;
  --shadow-color: rgba(0, 0, 0, 0.05);

  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'Geist Mono', "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;

  --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
}

[data-theme="dark"] {
  --bg-primary: #020015;
  --bg-secondary: #020015;
  --bg-tertiary: #1c1c1e;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-muted: #636366;
  --border-color: #9a9a9e9a;
  --border-hover: #a7a7b8;
  --accent: #ffffff;
  --accent-muted: #e5e5ea;
  --code-bg: #000000;
  --code-text: #f5f5f7;
  --shadow-color: rgba(0, 0, 0, 0.4);
}


* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  transition: background-color 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
              color 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

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

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

pre, code {
  font-family: var(--font-mono);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 24px;
  }
}

.border-t {
  border-top: 1px solid var(--border-color);
}

.text-muted {
  color: var(--text-muted) !important;
}

.section-header {
  margin-bottom: clamp(40px, 8vw, 80px);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--text-secondary);
  max-width: 600px;
  font-weight: 400;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8rem;
  border-radius: 4px;
}

/* Magnetic Button Transform Hooks */
.btn-magnetic {
  display: inline-flex;
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(var(--bg-primary-rgb), 0.7);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  transition: background-color 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

:root {
  --bg-primary-rgb: 255, 255, 255;
}
[data-theme="dark"] {
  --bg-primary-rgb: 10, 10, 12;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 24px;
    height: 64px;
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: "Marcellus", serif;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-symbol {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}
.logo-symbol img {
    width: 100%;
    height: 100%;
    object-fit: contain;

    filter: brightness(0);
}

[data-theme="dark"] .logo-symbol img {
    filter: brightness(0) invert(1);
}
.logo-text {
  font-size: 1rem;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; 
  }
}

.nav-link {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background-color: var(--bg-secondary);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.sun-icon {
  display: none;
}
.moon-icon {
  display: block;
}

[data-theme="dark"] .sun-icon {
  display: block;
}
[data-theme="dark"] .moon-icon {
  display: none;
}

.hero-section {
  padding-top: 160px;
  padding-bottom: clamp(80px, 10vw, 120px);
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.hero-headline {
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.arrow-symbol {
  font-weight: 300;
  opacity: 0.7;
}

.hero-subheading {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 580px;
  line-height: 1.5;
}

@media (max-width: 992px) {
  .hero-subheading {
    margin-left: auto;
    margin-right: auto;
  }
}

.hero-ctas {
  display: flex;
  gap: 16px;
}

@media (max-width: 992px) {
  .hero-ctas {
    justify-content: center;
  }
}

.hero-visual-container {
  display: flex;
  justify-content: center;
}

.visual-frame {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.95;
  transition: var(--transition-smooth);
}

.hero-image:hover {
  transform: scale(1.03);
  mix-blend-mode: normal;
  filter: contrast(1.02) grayscale(0%);
  opacity: 1;
}

.frame-border {
  width: 12px;
  height: 12px;
  position: absolute;
  border: 2px solid var(--text-muted);
}
.top-left {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}
.top-right {
  top: -1px;
  right: -1px;
  border-left: none;
  border-bottom: none;
}
.bottom-left {
  bottom: -1px;
  left: -1px;
  border-right: none;
  border-top: none;
}
.bottom-right {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
}

.section {
  padding: clamp(80px, 12vw, 160px) 0;
}

.featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.featured-visual-card {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 40px var(--shadow-color);
  transition: var(--transition-smooth);
}

.featured-visual-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
}

.dashboard-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.dashboard-image {
  width: 100%;
  height: auto;
  filter: grayscale(100%) brightness(0.95);
  transition: var(--transition-smooth);
}

.featured-visual-card:hover .dashboard-image {
  filter: grayscale(0%) brightness(1);
}

.overlay-glass {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(var(--bg-primary-rgb), 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  font-weight: 600;
  text-transform: uppercase;
}

.featured-text-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 768px) {
  .featured-text-panels {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.panel-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
}

.panel-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 3px;
  height: 14px;
  background-color: var(--accent);
}

.panel-body {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.featured-architecture {
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: clamp(32px, 5vw, 56px);
  border-radius: 8px;
}

.arch-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

@media (max-width: 768px) {
  .arch-box {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }
}

.arch-node {
  flex: 1;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  min-height: 96px;
  justify-content: center;
}

.node-label {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.node-sub {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.gateway-cache {
  position: absolute;
  bottom: -12px;
  background-color: var(--accent);
  color: var(--bg-primary);
  border-radius: 3px;
  padding: 2px 8px;
}

.cache-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.arch-arrow {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .arch-arrow {
    transform: rotate(90deg);
  }
}

.featured-simulator {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.simulator-header {
  background-color: var(--bg-tertiary);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.simulator-dots {
  display: flex;
  gap: 6px;
  margin-right: 20px;
}

.simulator-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-color);
}

[data-theme="dark"] .simulator-dots span {
  background-color: #2c2c2e;
}

.simulator-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.simulator-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background-color: var(--code-bg);
  color: var(--code-text);
  min-height: 280px;
}

@media (max-width: 992px) {
  .simulator-body {
    grid-template-columns: 1fr;
  }
}

.simulator-code-pane {
  padding: 24px;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

[data-theme="dark"] .simulator-code-pane {
  border-right-color: #1c1c1e;
}

@media (max-width: 992px) {
  .simulator-code-pane {
    border-right: none;
    border-bottom: 1px solid #1c1c1e;
  }
}

.code-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid #2c2c2e;
  padding-bottom: 8px;
}

.code-tab {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8e8e93;
  padding: 4px 12px;
  border-radius: 4px;
  transition: var(--transition-fast);
}

.code-tab:hover {
  color: #f5f5f7;
}

.code-tab.active {
  background-color: #2c2c2e;
  color: #f5f5f7;
}

.code-content {
  position: relative;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.code-content pre {
  margin-bottom: 24px;
  overflow-x: auto;
}

.code-content code {
  font-size: 0.8rem;
  line-height: 1.5;
}

.copy-btn {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: #1c1c1e;
  border: 1px solid #2c2c2e;
  color: #a1a1a6;
  padding: 6px 12px;
  border-radius: 4px;
  transition: var(--transition-fast);
}

.copy-btn:hover {
  border-color: #8e8e93;
  color: #f5f5f7;
}

/* Right: Telemetry Stream */
.simulator-interactive-pane {
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8e8e93;
  margin-bottom: 16px;
}

.terminal-logs {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  overflow-y: auto;
  max-height: 180px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log-line {
  word-break: break-all;
}

.log-line.info { color: #f5f5f7; }
.log-line.success { color: #30d158; }
.log-line.warning { color: #ff9f0a; }


.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 992px) {
  .work-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .work-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.project-card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  padding: 32px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 380px;
  transition: var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 30px var(--shadow-color);
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.project-role {
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.project-stats {
  display: flex;
  gap: 32px;
  margin-top: auto;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

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

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2px;
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--text-secondary);
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  color: var(--text-secondary);
}

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

.project-link .arrow {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-link:hover .arrow {
  transform: translate(2px, -2px);
}


.design-masonry {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
}

@media (max-width: 992px) {
  .design-masonry {
    grid-template-columns: 1fr;
  }
}

.masonry-item {
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  position: relative;
  aspect-ratio: 16/11;
  transition: var(--transition-smooth);
}

.masonry-item.size-tall {
  grid-row: span 2;
  aspect-ratio: auto;
  height: 100%;
}

@media (max-width: 992px) {
  .masonry-item.size-tall {
    grid-row: auto;
    aspect-ratio: 16/11;
    height: auto;
  }
}

.masonry-img-wrapper {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.masonry-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) brightness(0.92);
  transition: var(--transition-smooth);
}

.masonry-item:hover .masonry-img {
  filter: grayscale(0%) brightness(1);
  transform: scale(1.02);
}

.masonry-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0) 50%);
  display: flex;
  align-items: flex-end;
  padding: 32px;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.masonry-item:hover .masonry-hover {
  opacity: 1;
}

.hover-info {
  color: #ffffff;
  transform: translateY(16px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.masonry-item:hover .hover-info {
  transform: translateY(0);
}

.masonry-category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  display: block;
  margin-bottom: 8px;
}

.masonry-item-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.masonry-item-desc {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 320px;
}


.lab-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.95fr 0.95fr;
  gap: 32px;
}

@media (max-width: 1100px) {
  .lab-grid {
    grid-template-columns: 1fr;
  }
}

.lab-card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  border-radius: 8px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 340px;
  transition: var(--transition-smooth);
}

.lab-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.lab-card-header {
  margin-bottom: 24px;
}

.lab-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 12px;
}

.lab-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.lab-sandbox-container {
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  border-radius: 6px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

#bezier-canvas {
  width: 100%;
  height: auto;
  max-width: 340px;
  border-radius: 4px;
  cursor: crosshair;
}

.sandbox-instruction {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-top: 12px;
  text-align: center;
}

.lab-card-body {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.lab-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.lab-metrics {
  display: flex;
  gap: 32px;
  margin-top: auto;
  margin-bottom: 24px;
}

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

.metric-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
}

.metric-lbl {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2px;
}

.lab-card-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.lab-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.lab-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
}

.lab-link:hover {
  color: var(--text-primary);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 992px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

.video-card {
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.video-thumbnail {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  position: relative;
  margin-bottom: 20px;
}

.video-placeholder-graphic {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background-color: var(--bg-tertiary);
  transition: var(--transition-smooth);
}

.wave-graphic {
  display: flex;
  align-items: center;
  gap: 6px;
}

.wave-graphic span {
  width: 3px;
  height: 20px;
  background-color: var(--text-muted);
  opacity: 0.4;
  border-radius: 2px;
}
.wave-graphic span:nth-child(2) { height: 40px; }
.wave-graphic span:nth-child(3) { height: 30px; }
.wave-graphic span:nth-child(4) { height: 50px; }
.wave-graphic span:nth-child(5) { height: 25px; }

/* Grid shapes helper for design thumbnail visual representation */
.grid-lines-graphic {
  position: relative;
  width: 80px;
  height: 80px;
  border: 1px dashed var(--text-muted);
  opacity: 0.4;
}

.grid-lines-graphic .horiz, .grid-lines-graphic .vert {
  position: absolute;
  background-color: var(--text-muted);
}
.grid-lines-graphic .horiz {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
}
.grid-lines-graphic .vert {
  left: 50%;
  top: 0;
  height: 100%;
  width: 1px;
}

.circles-graphic {
  position: relative;
  width: 100px;
  height: 100px;
  opacity: 0.4;
}

.circles-graphic .c1, .circles-graphic .c2 {
  position: absolute;
  border: 1px solid var(--text-muted);
  border-radius: 50%;
}
.circles-graphic .c1 {
  width: 60px;
  height: 60px;
  top: 20px;
  left: 10px;
}
.circles-graphic .c2 {
  width: 50px;
  height: 50px;
  top: 30px;
  left: 40px;
}

.play-btn-circle {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--accent);
  color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transform: scale(0.9);
  opacity: 0.85;
  transition: var(--transition-smooth);
}

.video-card:hover .play-btn-circle {
  transform: scale(1.05);
  opacity: 1;
  background-color: var(--bg-primary);
  color: var(--accent);
}

.play-icon {
  width: 16px;
  height: 16px;
  margin-left: 2px;
}

.video-duration {
  position: absolute;
  bottom: 12px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background-color: rgba(0,0,0,0.85);
  color: #ffffff;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 500;
}

.video-info {
  display: flex;
  flex-direction: column;
}

.video-topic {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.video-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.video-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.45;
}


.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

@media (max-width: 992px) {
  .skills-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 576px) {
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.skills-category {
  border-left: 1px solid var(--border-color);
  padding-left: 24px;
}

.category-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.skills-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skills-list li {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
}


.about-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 64px;
}

@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

.about-narrative {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.narrative-large {
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.narrative-body {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about-timeline {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.timeline-item {
  display: flex;
  gap: 24px;
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
  min-width: 90px;
}

.timeline-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: clamp(40px, 8vw, 80px);
  border-radius: 12px;
  text-align: center;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 24px;
}

.contact-title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.contact-desc {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px auto;
  line-height: 1.55;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin-bottom: 48px;
}

.contact-email {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  border-bottom: 2px solid transparent;
}

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

.contact-socials {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(16px, 4vw, 40px);
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.social-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.social-link:hover {
  color: var(--text-primary);
}

.social-link span {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.social-link:hover span {
  transform: translate(2px, -2px);
}


.footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  background-color: var(--bg-primary);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Animation Delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }


#simulate-btn {
    color: #ffffff ;
}

.hero-bg-logo {
  position: absolute;
  left: -180px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 0;
  pointer-events: none;
}

.hero-bg-logo img {
  width: 950px;
  height: auto;

  /* Light Mode */
  opacity: 0.045;
  filter: grayscale(100%) brightness(0);

  user-select: none;
}

[data-theme="dark"] .hero-bg-logo img {
  opacity: 0.06;
  filter: grayscale(100%) brightness(1);
}

.project-links {
  display: flex;
  gap: 24px;
  margin: 16px 0 20px;
  flex-wrap: wrap;
}

.project-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.project-links a:hover {
  color: var(--text-primary);
}