@layer base {
  :root {
    --bg: #f6f8fb;
    --bg-soft: #ffffff;
    --text: #0b1220;
    --text-soft: #6b7280;
    --accent: #6366f1;
    --accent-2: #22d3ee;
    --accent-strong: #4338ca;
    --accent-soft: rgba(99, 102, 241, 0.12);
    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.14);
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.06);
    --shadow-md: 0 12px 26px -12px rgba(15, 23, 42, 0.3);
    --shadow-lg: 0 30px 60px -45px rgba(15, 23, 42, 0.5);
    --shadow-subtle: 0 0 0 1px rgba(15, 23, 42, 0.05);
    --transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  }

  * {
    box-sizing: border-box;
    scroll-behavior: smooth;
  }

  html,
  body {
    margin: 0;
    padding: 0;
  }

  body {
    min-height: 100vh;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    position: relative;
  }

  body::before,
  body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
  }

  body::before {
    background: radial-gradient(circle at top, rgba(99, 102, 241, 0.18), transparent 55%),
      radial-gradient(circle at 10% 30%, rgba(34, 211, 238, 0.16), transparent 50%);
  }

  body::after {
    background-image: linear-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(15, 23, 42, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.3;
  }

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

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

  ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }
}

@layer layout {
  .container {
    width: 100%;
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1.5rem;
  }

  .section {
    padding: 7rem 0;
  }

  .section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 2.5rem;
  }

  .section-narrow {
    max-width: 640px;
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(246, 248, 251, 0.7);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  }

  .header-inner {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .site-footer {
    border-top: 1px solid var(--border);
    padding: 3rem 0 4rem;
    margin-top: 6rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
  }

  .footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-soft);
  }

  @media (max-width: 768px) {
    .header-inner {
      padding-inline: 1.25rem;
    }

    .section {
      padding: 3.5rem 0;
    }

    .section-header {
      flex-direction: column;
      align-items: flex-start;
    }

    .footer-inner {
      flex-direction: column;
      align-items: flex-start;
    }
  }
}

@layer components {
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
  }

  .brand-mark {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    background: linear-gradient(135deg, #6366f1, #22d3ee);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.35);
  }

  .brand-text {
    font-weight: 600;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
    text-transform: uppercase;
  }

  .nav {
    display: flex;
    gap: 0.9rem;
    font-size: 0.8rem;
  }

  .nav-link {
    padding: 0.55rem 0.9rem;
    border-radius: 999px;
    color: var(--text);
    border: 1px solid transparent;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: var(--transition);
  }

  .nav-link:hover {
    color: var(--accent-strong);
    border-color: var(--border-strong);
    background: rgba(99, 102, 241, 0.08);
  }

  .hero {
    min-height: 92vh;
    display: flex;
    align-items: center;
    padding-top: 110px;
  }

  .hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 3rem;
    align-items: center;
  }

  .hero-copy {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-strong);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .badge-outline {
    background: transparent;
    border: 1px solid rgba(99, 102, 241, 0.25);
    color: var(--text);
  }

  .badge-ghost {
    background: rgba(34, 211, 238, 0.12);
    color: #0e7490;
  }

  .hero-title {
    font-size: clamp(3.2rem, 4vw, 4.6rem);
    line-height: 1.05;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin: 0;
    background: linear-gradient(120deg, #0b1220, #334155 40%, #6366f1 85%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-subtitle {
    font-size: 1.25rem;
    color: var(--text);
    font-weight: 600;
    margin: 0;
  }

  .hero-description {
    color: var(--text-soft);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 32rem;
    margin: 0;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .btn {
    padding: 0.75rem 1.6rem;
    font-weight: 600;
    border-radius: 10px;
    transition: var(--transition);
    letter-spacing: 0.02em;
  }

  .btn-primary {
    background: linear-gradient(120deg, #6366f1, #22d3ee);
    color: #ffffff;
    border: 1px solid rgba(99, 102, 241, 0.5);
    box-shadow: 0 18px 38px -18px rgba(99, 102, 241, 0.6);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 45px -20px rgba(99, 102, 241, 0.75);
  }

  .btn-ghost {
    border: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, 0.6);
    color: var(--text);
  }

  .btn-ghost:hover {
    border-color: var(--accent-strong);
    color: var(--accent-strong);
  }

  .hero-panel {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 16px;
    padding: 1.8rem;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(14px);
  }

  .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
  }

  .panel-title {
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-soft);
  }

  .panel-pill {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    border: 1px solid rgba(34, 211, 238, 0.4);
    color: #0e7490;
    background: rgba(34, 211, 238, 0.12);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .panel-body {
    display: grid;
    gap: 1rem;
  }

  .panel-row {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 1rem;
    align-items: center;
  }

  .panel-label {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-soft);
  }

  .panel-value {
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 500;
  }

  .panel-footer {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.4rem;
    flex-wrap: wrap;
  }

  .panel-code {
    font-size: 0.7rem;
    padding: 0.3rem 0.6rem;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.08);
    color: var(--text);
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .section-title {
    font-size: 1.6rem;
    margin: 0 0 0.35rem;
    letter-spacing: -0.01em;
  }

  .section-title::before {
    content: '';
    display: block;
    width: 46px;
    height: 2px;
    margin-bottom: 0.75rem;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: 999px;
  }

  .section-subtitle {
    margin: 0;
    color: var(--text-soft);
    font-size: 1rem;
    max-width: 36rem;
    line-height: 1.7;
  }

  .section-link {
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--border-strong);
    color: var(--text);
    background: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  .section-link:hover {
    border-color: var(--accent-strong);
    color: var(--accent-strong);
  }

  .projects-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2.2rem;
  }

  .project-card {
    background: rgba(255, 255, 255, 0.75);
    border-radius: 18px;
    padding: 2.1rem;
    border: 1px solid rgba(99, 102, 241, 0.18);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
  }

  .project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, rgba(99, 102, 241, 0.12), transparent 60%);
    opacity: 0;
    transition: var(--transition);
  }

  .project-card > * {
    position: relative;
    z-index: 1;
  }

  .project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(99, 102, 241, 0.4);
  }

  .project-card:hover::before {
    opacity: 1;
  }

  .project-name-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
  }

  .project-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.01em;
  }

  .status-pill {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-strong);
    border: 1px solid rgba(99, 102, 241, 0.25);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .project-description {
    color: var(--text-soft);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
  }

  .tag-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
  }

  .tag {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    background: rgba(15, 23, 42, 0.04);
    border-radius: 999px;
    color: var(--text);
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .project-footer {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(99, 102, 241, 0.14);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .project-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-strong);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
  }

  .project-link::after {
    content: "→";
    transition: transform 0.2s;
  }

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

  .status-pill.status-in-progress {
    background: rgba(251, 146, 60, 0.18);
    color: #c2410c;
    border-color: rgba(251, 146, 60, 0.35);
  }

  .status-pill.status-experimental {
    background: rgba(56, 189, 248, 0.2);
    color: #0369a1;
    border-color: rgba(56, 189, 248, 0.4);
  }

  .project-platform {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-soft);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .project-hero {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 4rem;
    align-items: start;
    margin-bottom: 4rem;
  }

  .project-kicker {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
  }

  .project-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    color: transparent;
    background: linear-gradient(120deg, #0b1220, #334155 40%, #6366f1 85%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .project-subtitle {
    font-size: 1.25rem;
    color: var(--text-soft);
    margin-bottom: 2rem;
    line-height: 1.6;
    max-width: 600px;
  }

  .project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
  }

  .meta-pill {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-strong);
  }

  .project-meta-right {
    padding: 1.6rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(99, 102, 241, 0.18);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px);
  }

  .meta-block + .meta-block {
    margin-top: 1.5rem;
  }

  .meta-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-soft);
    margin-bottom: 0.75rem;
    display: block;
  }

  .project-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .project-link-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.25);
    color: var(--accent-strong);
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition);
  }

  .project-link-pill:hover {
    border-color: var(--accent-strong);
    transform: translateY(-2px);
  }

  .project-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 4rem;
    align-items: start;
  }

  .project-section {
    padding: 1.75rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(99, 102, 241, 0.16);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
  }

  .project-section + .project-section {
    margin-top: 3rem;
  }

  .project-body {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--text-soft);
    margin-bottom: 1.5rem;
  }

  .bullet-list {
    margin: 1rem 0;
    padding-left: 0;
    list-style: none;
  }

  .bullet-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-soft);
    line-height: 1.6;
  }

  .bullet-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
  }

  .screenshot-grid {
    display: grid;
    gap: 1.5rem;
  }

  .screenshot-card {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(99, 102, 241, 0.18);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.8);
  }

  .screenshot-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
  }

  .screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
  }

  .screenshot-card figcaption {
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.85);
    font-size: 0.875rem;
    color: var(--text-soft);
    border-top: 1px solid rgba(99, 102, 241, 0.16);
  }

  .contact-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .contact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-radius: 16px;
    border: 1px solid rgba(99, 102, 241, 0.18);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(10px);
    transition: var(--transition);
  }

  .contact-item:hover {
    border-color: rgba(99, 102, 241, 0.45);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

  .contact-label {
    font-weight: 500;
    color: var(--text-soft);
  }

  .contact-value {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    color: var(--text);
  }

  .footer-meta {
    opacity: 0.75;
  }

  @media (max-width: 1024px) {
    .hero-inner {
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }

    .hero-panel {
      order: -1;
    }

    .projects-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .project-hero,
    .project-layout {
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }

    .project-meta-right {
      max-width: none;
    }
  }

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

    .hero-title {
      font-size: 2.5rem;
    }

    .hero-actions {
      flex-direction: column;
      align-items: flex-start;
    }

    .hero-panel {
      padding: 1.4rem;
    }

    .header-inner {
      padding: 0 1rem;
    }

    .panel-row {
      grid-template-columns: 1fr;
      gap: 0.4rem;
    }

    .contact-item {
      flex-direction: column;
      align-items: flex-start;
      gap: 0.4rem;
    }
  }
}

@layer utilities {
  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  @media (prefers-reduced-motion: reduce) {
    * {
      scroll-behavior: auto !important;
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
    }
  }
}