/* ==========================================================================
   Hypergen Ltd - Main Stylesheet
   Design System: Tech-focused, clean, modern, accessible
   Color Palette: Deep Charcoal (#121820), Dark Slate (#1A2332), Accent Green (#10B981), Light Neutral (#F8FAFC)
   ========================================================================== */

:root {
  --color-bg: #0F172A;
  --color-surface: #1E293B;
  --color-surface-card: #0F172A;
  --color-surface-border: #334155;
  --color-primary: #10B981;
  --color-primary-hover: #059669;
  --color-text-main: #F8FAFC;
  --color-text-muted: #94A3B8;
  --color-text-light: #CBD5E1;
  --color-accent-blue: #38BDF8;
  --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --max-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --transition: all 0.2s ease-in-out;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-family-sans);
  line-height: 1.6;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-main);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.875rem; letter-spacing: -0.01em; margin-bottom: 1.25rem; }
h3 { font-size: 1.35rem; }
p { margin-bottom: 1.25rem; color: var(--color-text-light); }
p.lead { font-size: 1.2rem; color: var(--color-text-muted); font-weight: 400; }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--color-accent-blue); text-decoration: underline; }

code, pre {
  font-family: var(--font-family-mono);
  background-color: #090D16;
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--color-primary);
}

/* Layout Utilities */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-surface-border);
}

.section-alt {
  background-color: var(--color-surface);
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* Header & Navigation */
header.site-header {
  background-color: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--color-surface-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 75px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-main);
  text-decoration: none !important;
  letter-spacing: -0.03em;
}

.logo-mark {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #0F172A;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.3rem;
  border-radius: var(--radius-sm);
  clip-path: polygon(0% 0%, 100% 0%, 100% 75%, 75% 100%, 0% 100%);
}

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

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

nav.main-nav a {
  color: var(--color-text-light);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.25rem;
}

nav.main-nav a:hover, nav.main-nav a.active {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid var(--color-primary);
}

.dropdown {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-surface);
  min-width: 260px;
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem 0;
  z-index: 100;
}

.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  padding: 0.6rem 1.25rem;
  color: var(--color-text-light);
  border-bottom: none !important;
  font-size: 0.9rem;
}

.dropdown-menu a:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-main);
  font-size: 1.75rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none !important;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #0F172A;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #0F172A;
  transform: translateY(-1px);
}

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

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

/* Cards & Modules */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card-body {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  flex-grow: 1;
}

.card-link {
  margin-top: 1.25rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(56, 189, 248, 0.05) 0%, transparent 50%);
  border-bottom: 1px solid var(--color-surface-border);
}

.hero-subtitle {
  color: var(--color-primary);
  font-family: var(--font-family-mono);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1rem 0;
  background-color: rgba(30, 41, 59, 0.4);
  border-bottom: 1px solid var(--color-surface-border);
  font-size: 0.875rem;
}

.breadcrumbs ol {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  align-items: center;
}

.breadcrumbs li+li::before {
  content: "/";
  color: var(--color-text-muted);
  margin-right: 0.5rem;
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs span {
  color: var(--color-text-main);
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-md);
  color: var(--color-text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* Documents Table */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.doc-table th, .doc-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-surface-border);
}

.doc-table th {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  font-weight: 600;
}

.doc-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--color-primary);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Footer */
footer.site-footer {
  background-color: #090D16;
  border-top: 1px solid var(--color-surface-border);
  padding: 4rem 0 2rem;
  margin-top: auto;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--color-text-main);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: var(--color-text-muted);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-surface-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive Styles */
@media (max-width: 900px) {
  .header-container { height: 65px; }
  .mobile-menu-btn { display: block; }
  nav.main-nav {
    display: none;
    position: absolute;
    top: 65px;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-surface-border);
    padding: 1.5rem;
  }
  nav.main-nav.is-open { display: block; }
  nav.main-nav ul { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .dropdown-menu { position: static; display: block; border: none; box-shadow: none; padding-left: 1rem; background: transparent; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
}