/* ==========================================================================
   BenzStore Showcase & Landing Page Stylesheet
   Architecture: Untis-Go Gold Standard & Design Systems Tokens
   ========================================================================== */

:root {
  /* Dark Theme (Default) */
  --bg-body: #080a0f;
  --bg-surface: #0e121b;
  --bg-card: #141a26;
  --bg-card-hover: #1a2232;
  --bg-input: #101420;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-muted: rgba(255, 255, 255, 0.04);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-focus: #38bdf8;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --brand-blue: #38bdf8;
  --brand-blue-hover: #7dd3fc;
  --brand-blue-bg: rgba(56, 189, 248, 0.12);

  --brand-green: #10b981;
  --brand-green-hover: #34d399;
  --brand-green-bg: rgba(16, 185, 129, 0.15);

  --brand-amber: #f59e0b;
  --brand-amber-bg: rgba(245, 158, 11, 0.15);

  --brand-purple: #a855f7;
  --brand-purple-bg: rgba(168, 85, 247, 0.15);

  --brand-orange: #f97316;
  --brand-orange-bg: rgba(249, 115, 22, 0.15);

  --brand-teal: #14b8a6;
  --brand-teal-bg: rgba(20, 184, 166, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.6);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

[data-theme="light"] {
  --bg-body: #f6f8fa;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f3f5;
  --bg-input: #ffffff;

  --border-color: #d0d7de;
  --border-muted: #e1e4e8;
  --border-strong: #afb8c1;
  --border-focus: #0969da;

  --text-main: #1f2328;
  --text-muted: #656d76;
  --text-dim: #8c959f;

  --brand-blue: #0969da;
  --brand-blue-hover: #0550ae;
  --brand-blue-bg: #ddf4ff;

  --brand-green: #1f883d;
  --brand-green-hover: #1a7f37;
  --brand-green-bg: #dafbe1;

  --brand-amber: #9a6700;
  --brand-amber-bg: #fff8c5;

  --brand-purple: #8250df;
  --brand-purple-bg: #fbefff;

  --brand-orange: #bc4c00;
  --brand-orange-bg: #fff1e5;

  --brand-teal: #0d766e;
  --brand-teal-bg: #ccfbf1;

  --shadow-sm: 0 1px 3px rgba(31, 35, 40, 0.08);
  --shadow-md: 0 4px 16px rgba(31, 35, 40, 0.1);
  --shadow-lg: 0 10px 30px rgba(31, 35, 40, 0.15);
}

/* Base Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-body);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(14, 18, 27, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
}

[data-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.88);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.breadcrumb-back {
  color: var(--brand-blue);
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

.breadcrumb-back:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.brand-divider {
  width: 1px;
  height: 22px;
  background-color: var(--border-color);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
}

.brand-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.brand-ver {
  font-size: 11px;
  background-color: var(--brand-blue-bg);
  color: var(--brand-blue);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-link {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-link.nav-highlight {
  color: var(--brand-blue);
  font-weight: 700;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-btn, .lang-btn {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-btn:hover, .lang-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--brand-blue);
}

.btn-gh {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-gh:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
}

/* Hero Section */
.hero-section {
  position: relative;
  overflow: hidden;
  padding: 80px 24px 60px 24px;
  text-align: center;
}

.hero-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 650px;
  height: 450px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(14, 18, 27, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}

.badge {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid transparent;
}

.badge-release {
  background-color: var(--brand-blue-bg);
  color: var(--brand-blue);
  border-color: rgba(56, 189, 248, 0.3);
}

.badge-platform {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border-color: var(--border-color);
}

.badge-security {
  background-color: var(--brand-green-bg);
  color: var(--brand-green);
  border-color: rgba(16, 185, 129, 0.3);
}

.badge-license {
  background-color: var(--brand-amber-bg);
  color: var(--brand-amber);
  border-color: rgba(245, 158, 11, 0.3);
}

.hero-title {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .gradient-text {
  background: linear-gradient(135deg, #0969da 0%, #6366f1 50%, #9333ea 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 36px auto;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-align: center;
}

.btn-sub {
  font-size: 11px;
  font-weight: 400;
  opacity: 0.8;
  margin-top: 2px;
}

.btn-primary {
  background: #0969da;
  color: #ffffff;
  border-color: #0969da;
}

.btn-primary:hover {
  background: #0550ae;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(9, 105, 218, 0.4);
}

.btn-cta {
  background: linear-gradient(135deg, #0969da 0%, #2563eb 100%);
  font-size: 16px;
  padding: 14px 28px;
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
}

.btn-cta:hover {
  background: linear-gradient(135deg, #0550ae 0%, #1d4ed8 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.5);
}

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

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--brand-blue);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.hero-quick-cmd {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.cmd-label {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cmd-box {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 13px;
}

.cmd-box code {
  color: var(--brand-blue);
}

.btn-copy, .btn-copy-sm {
  background-color: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-copy:hover, .btn-copy-sm:hover {
  color: var(--text-main);
  border-color: var(--brand-blue);
}

/* Section Shared */
.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 24px;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 48px auto;
}

.section-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--brand-blue);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  display: inline-block;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.feature-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.f-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}

.f-card-icon.orange { background-color: var(--brand-orange-bg); }
.f-card-icon.blue { background-color: var(--brand-blue-bg); }
.f-card-icon.green { background-color: var(--brand-green-bg); }
.f-card-icon.purple { background-color: var(--brand-purple-bg); }
.f-card-icon.amber { background-color: var(--brand-amber-bg); }
.f-card-icon.teal { background-color: var(--brand-teal-bg); }

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Installation Grid */
.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.install-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.install-card-header {
  margin-bottom: 12px;
}

.plat-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--brand-blue);
  background-color: var(--brand-blue-bg);
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
}

.install-card h3 {
  font-size: 19px;
  font-weight: 700;
}

.install-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-main);
  font-weight: 500;
}

.step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--brand-blue);
  color: #000;
  font-size: 11px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.code-box-sm {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  word-break: break-all;
}

.code-box-sm code {
  color: var(--brand-blue);
}

/* Downloads & Releases */
.release-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.release-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.release-header h3 {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tag-latest {
  font-size: 11px;
  background-color: var(--brand-green-bg);
  color: var(--brand-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

.release-date {
  font-size: 12px;
  color: var(--text-dim);
}

.btn-release-gh {
  font-size: 13px;
  color: var(--brand-blue);
  font-weight: 600;
}

.btn-release-gh:hover {
  text-decoration: underline;
}

.table-responsive {
  overflow-x: auto;
}

.release-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.release-table th, .release-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
}

.release-table th {
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.hash-code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.btn-table-dl {
  display: inline-block;
  background-color: var(--bg-card);
  color: var(--brand-blue);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-table-dl:hover {
  background-color: var(--brand-blue);
  color: #000;
  border-color: var(--brand-blue);
}

/* About & Authors Section */
.about-layout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
}

.about-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.about-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.author-profile {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0969da 0%, #38bdf8 100%);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-meta h4 {
  font-size: 16px;
  font-weight: 700;
}

.author-role {
  font-size: 13px;
  color: var(--text-dim);
}

.author-links {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--brand-blue);
  margin-top: 4px;
}

.author-links a:hover {
  text-decoration: underline;
}

.about-desc, .license-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.ai-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.ai-chip {
  font-size: 11px;
  background-color: var(--bg-card);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 14px;
  font-weight: 600;
}

.copyright-line {
  font-size: 12px;
  color: var(--text-dim);
}

.license-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  padding: 32px 24px;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--brand-blue);
  text-decoration: underline;
}

.footer-meta {
  font-size: 12px;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .hero-section {
    padding: 50px 16px 40px 16px;
  }
  .features-grid, .install-grid, .about-layout-grid {
    grid-template-columns: 1fr;
  }
}