:root {
  --color-bg: #0b0f19;
  --color-surface: #131b2e;
  --color-surface-hover: #18233c;
  --color-border: #22324f;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-primary: #38bdf8;
  --color-primary-hover: #7dd3fc;
  --color-primary-bg: rgba(56, 189, 248, 0.12);
  --color-accent: #818cf8;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container-max-width: 1120px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
}

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

html {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--color-primary-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 0.5rem 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 999;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.25rem;
  transition: color var(--transition);
}

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

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 800px;
}

.hero-title-accent {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 680px;
  margin-bottom: 2rem;
  line-height: 1.6;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #0b0f19;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #0b0f19;
  transform: translateY(-1px);
}

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

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

/* Sections */
.section {
  padding: 4rem 0;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-tag {
  color: var(--color-primary);
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-intro {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 650px;
}

/* Grid Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
}

.project-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.project-icon {
  width: 24px;
  height: 24px;
}

.project-status {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  color: var(--color-text-muted);
  margin-bottom: 0.85rem;
}

.project-status.active {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.project-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

.project-text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin-bottom: 1.5rem;
}

.project-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text-muted);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: auto;
}

.project-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.project-link:hover svg {
  transform: translateX(3px);
}

/* About */
.about-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.about-text {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.about-text:last-child {
  margin-bottom: 0;
}

/* Platforms Section */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.platform-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--transition);
}

.platform-card:hover {
  border-color: var(--color-primary);
}

.platform-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.platform-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}

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

.platform-url {
  font-size: 0.85rem;
  color: var(--color-primary);
  word-break: break-all;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: auto;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer-meta {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

@media (max-width: 640px) {
  .hero {
    padding: 3.5rem 0 2.5rem;
  }

  .header-inner {
    height: 4rem;
  }

  .nav-list {
    gap: 0.85rem;
  }

  .nav-link {
    font-size: 0.85rem;
  }

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

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

.company-info {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid rgba(128, 128, 128, 0.25);
  display: grid;
  gap: 0.5rem;
}