/* --- Design tokens --- */
:root {
  --color-bg: #0c0e12;
  --color-surface: #14171f;
  --color-surface-elevated: #1a1e28;
  --color-border: #2a3140;
  --color-text: #e6e9ef;
  --color-text-muted: #8b92a4;
  --color-accent: #22c3a6;
  --color-accent-hover: #2dd4b4;
  --color-accent-muted: rgba(34, 195, 166, 0.15);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --transition: 0.2s ease;
}

/* --- Reset & base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  line-height: 1.2;
  font-weight: 600;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 14, 18, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 6rem;
}

.logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.logo img {
  display: block;
  height: 5.5rem;
  width: auto;
}

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

.nav {
  display: flex;
  gap: var(--space-xl);
}

.nav a {
  color: var(--color-text-muted);
  font-weight: 500;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

@media (max-width: 48rem) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: none;
  }

  .nav.is-open {
    display: flex;
  }
}

/* --- Hero --- */
.hero {
  position: relative;
  padding: var(--space-4xl) 0;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-label {
  margin: 0 0 var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.hero-title {
  margin: 0 0 var(--space-lg);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 0 0 var(--space-xl);
  max-width: 32rem;
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--color-accent-muted), transparent),
    linear-gradient(180deg, transparent 0%, var(--color-bg) 70%);
  pointer-events: none;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 0 3px var(--color-accent-muted);
}

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

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

/* --- Sections --- */
.section {
  padding: var(--space-4xl) 0;
}

.section-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.02em;
}

.section-lead {
  margin: 0 0 var(--space-2xl);
  max-width: 36rem;
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

/* --- Services grid --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.service-card {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-muted);
}

.service-icon {
  display: inline-block;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--color-accent);
}

.service-card h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1.125rem;
}

.service-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.services-note {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 48rem;
}

.services-note-title {
  margin: 0 0 var(--space-md);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.services-note p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Plans --- */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.plan-card {
  position: relative;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.plan-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-muted);
}

.plan-card-featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-muted);
}

.plan-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
}

.plan-name {
  margin: 0;
  font-size: 1.25rem;
}

.plan-desc {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  flex-grow: 1;
}

.plan-suit {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.plan-card .btn {
  align-self: flex-start;
  margin-top: var(--space-sm);
}

/* --- About --- */
.about {
  background: var(--color-surface);
}

.about-inner {
  max-width: 40rem;
}

.about-lead {
  margin: 0 0 var(--space-lg);
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.about-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-list li {
  position: relative;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.about-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

.code-block {
  margin: 0;
  padding: var(--space-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  overflow-x: auto;
}

.code-block code {
  color: var(--color-accent);
}


/* --- Contact --- */
.contact-inner {
  text-align: center;
}

.contact-lead {
  margin: 0 0 var(--space-lg);
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.contact-email {
  display: inline-block;
  margin-bottom: var(--space-md);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-accent);
}

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

.contact-note {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.footer-brand {
  margin: 0;
  font-weight: 600;
  color: var(--color-text);
}

.footer-copy {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --- Blog --- */
.blog-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.blog-list-item {
  border-bottom: 1px solid var(--color-border);
}

.blog-list-item a {
  display: block;
  padding: var(--space-lg) 0;
  color: inherit;
  text-decoration: none;
}

.blog-list-item a:hover {
  color: var(--color-accent);
}

.blog-list-title {
  margin: 0 0 var(--space-xs);
  font-size: 1.25rem;
  font-weight: 600;
}

.blog-list-date {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.blog-list-desc {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.blog-post-header {
  margin-bottom: var(--space-xl);
}

.blog-post-date {
  display: block;
  margin-top: var(--space-sm);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.blog-post-content {
  max-width: 42rem;
}

.blog-post-content h2 {
  margin: var(--space-2xl) 0 var(--space-md);
  font-size: 1.25rem;
}

.blog-post-content h3 {
  margin: var(--space-xl) 0 var(--space-sm);
  font-size: 1.125rem;
}

.blog-post-content p {
  margin: 0 0 var(--space-lg);
}

.blog-post-content ul {
  margin: 0 0 var(--space-lg);
  padding-left: 1.5rem;
}