/* Project: easypro.tech
 * Company: EasyProTech
 * Maintainer: EasyProTech
 * Date: 2026-08-10
 * Status: Created
 * Contsct: security@easypro.tech
 */

:root {
  --color-bg: #000;
  --color-bg-surface: #0a0a0a;
  --color-bg-elevated: #111;
  --color-bg-hover: #1a1a1a;
  --color-primary: #3d9970;
  --color-primary-hover: #358a64;
  --color-primary-muted: #3d997026;
  --color-accent: #8774e1;
  --color-accent-muted: #8774e126;
  --color-text: #f5f5f5;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666;
  --color-border: #1f1f1f;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --radius: 12px;
  --max: 48rem;
  --max-wide: 56rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  background:
    radial-gradient(1200px 600px at 10% -10%, #3d997022, transparent 55%),
    radial-gradient(900px 500px at 90% 0%, #8774e118, transparent 50%),
    linear-gradient(180deg, #050805 0%, #000 35%, #000 100%);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  background: #000c;
  backdrop-filter: blur(14px);
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  font-size: 1.05rem;
}

.brand span {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switch {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 8px;
  background: var(--color-bg-elevated);
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--color-text-secondary);
  padding: 0.35rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
}

.lang-switch button.active {
  background: var(--color-bg-hover);
  color: var(--color-text);
}

.nav-home {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
}

.nav-home:hover {
  background: var(--color-bg-hover);
  color: var(--color-text);
}

main {
  width: min(100%, var(--max-wide));
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

.hero {
  padding: 2.5rem 0 3rem;
  animation: fadeIn 0.55s ease-out;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.hero .lead {
  max-width: 40rem;
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
}

.note {
  display: inline-flex;
  gap: 0.6rem;
  align-items: flex-start;
  max-width: 40rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.toc a {
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: 0.2s ease;
}

.toc a:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

section {
  margin-bottom: 3.25rem;
  animation: fadeIn 0.6s ease-out both;
}

section:nth-of-type(2) { animation-delay: 0.05s; }
section:nth-of-type(3) { animation-delay: 0.1s; }
section:nth-of-type(4) { animation-delay: 0.15s; }

section h2 {
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}

section h3 {
  font-size: 1.05rem;
  margin: 1.4rem 0 0.5rem;
  color: var(--color-text);
}

section p,
section li {
  color: var(--color-text-secondary);
}

section p + p {
  margin-top: 0.85rem;
}

.principles {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.principle {
  padding-left: 1rem;
  border-left: 2px solid var(--color-primary);
}

.principle strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.grid-2 {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

@media (min-width: 800px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.block {
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-border);
}

.block:first-child {
  border-top: 0;
  padding-top: 0;
}

.block h3 {
  margin-top: 0;
}

.refs {
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.refs li {
  padding: 0.9rem 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

.refs li:first-child {
  border-top: 0;
}

.refs a {
  font-weight: 600;
}

.refs .meta {
  display: block;
  margin-top: 0.25rem;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-family: var(--font-mono);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid transparent;
  transition: 0.2s ease;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
}

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

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

.site-footer {
  width: min(100%, var(--max-wide));
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}