/* ===== Bpanel Website - Main Styles ===== */

:root {
  --bg-body: #06090f;
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #1c2333;
  --bg-card: #12171e;
  --bg-hover: #21262d;
  --border: #30363d;
  --border-light: #3d444d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-bg: rgba(88, 166, 255, 0.08);
  --accent-glow: rgba(88, 166, 255, 0.15);
  --danger: #f85149;
  --success: #3fb950;
  --warning: #d29922;
  --radius: 8px;
  --radius-lg: 16px;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --max-width: 1200px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(6, 9, 15, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: border-color 0.3s, background 0.3s;
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  background: rgba(6, 9, 15, 0.95);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-size: 24px;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--accent); }
.nav-logo:hover { color: var(--text-primary); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
  align-items: center;
}

.nav-links a {
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--accent-bg);
}

.nav-github {
  border: 1px solid var(--border) !important;
  background: var(--bg-secondary);
}
.nav-github:hover {
  border-color: var(--accent) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all 0.3s;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-ui);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn:hover { background: var(--bg-hover); border-color: var(--border-light); color: var(--text-primary); }

.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #000;
}

.btn-outline {
  background: transparent;
  border-color: var(--border-light);
}
.btn-outline:hover {
  background: var(--accent-bg);
  border-color: var(--accent);
}

.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 10px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 180px 0 120px;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-bg);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 96px;
  font-weight: 900;
  letter-spacing: -3px;
  line-height: 1;
  margin-bottom: 12px;
}
.hero-title span { color: var(--accent); }

.hero-tagline {
  font-size: 20px;
  color: var(--text-muted);
  margin-bottom: 24px;
  font-weight: 500;
  font-style: italic;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
}

.hero-install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px 12px 20px;
  max-width: 100%;
}

.hero-install code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.copy-btn {
  padding: 6px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  font-family: var(--font-ui);
}
.copy-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.copy-btn.copied { background: var(--success); color: #000; border-color: var(--success); }

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header h2 {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-header h2 span { color: var(--accent); }
.section-header p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== Features ===== */
.features {
  padding: 120px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s;
  opacity: 0;
  transform: translateY(20px);
}
.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  border-color: var(--accent);
  background: var(--bg-tertiary);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

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

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Tech Stack ===== */
.tech-section {
  padding: 120px 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.tech-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.2s;
}
.tech-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.tech-name {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

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

/* ===== Preview ===== */
.preview-section {
  padding: 120px 0;
}

.preview-window {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.4);
  max-width: 900px;
  margin: 0 auto;
}

.preview-titlebar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.preview-dots { display: flex; gap: 8px; }
.preview-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background: #f85149; }
.dot.yellow { background: #d29922; }
.dot.green { background: #3fb950; }

.preview-url {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.preview-body {
  display: flex;
  min-height: 360px;
}

.preview-sidebar {
  width: 200px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 8px 0;
}

.preview-path {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.preview-file {
  padding: 5px 12px;
  font-size: 13px;
  color: var(--text-secondary);
}
.preview-file.dir { color: var(--accent); }
.preview-file.active {
  background: var(--accent-bg);
  color: var(--accent);
}

.preview-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.preview-tabs {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.preview-tab {
  padding: 8px 16px;
  font-size: 12px;
  color: var(--text-muted);
  border-right: 1px solid var(--border);
}
.preview-tab.active {
  color: var(--text-primary);
  background: var(--bg-primary);
  border-bottom: 2px solid var(--accent);
}

.preview-code {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  flex: 1;
  white-space: pre;
  overflow: hidden;
}

.code-keyword { color: #ff7b72; }
.code-var { color: #e6edf3; }
.code-func { color: #d2a8ff; }
.code-str { color: #a5d6ff; }
.code-num { color: #79c0ff; }

.preview-terminal {
  border-top: 1px solid var(--border);
}

.preview-term-header {
  padding: 4px 12px;
  background: var(--bg-secondary);
  font-size: 11px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.preview-term-body {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  background: #0d1117;
}

.term-prompt { color: var(--success); }
.term-output { color: var(--text-secondary); }
.term-cursor {
  color: var(--accent);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ===== CTA ===== */
.cta-section {
  padding: 120px 0;
  text-align: center;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}

.cta-section h2 {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
  line-height: 1.2;
}
.cta-section h2 span { color: var(--accent); }
.cta-section > .container > p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 32px;
}

/* ===== Footer ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-size: 20px;
  font-weight: 900;
}
.footer-logo span { color: var(--accent); }

.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-links a:hover { color: var(--text-primary); }

.footer-copy {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Docs Page ===== */
.docs-hero {
  padding: 140px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.docs-hero h1 {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.docs-hero p {
  color: var(--text-secondary);
  font-size: 18px;
}

.docs-content {
  padding: 48px 0 120px;
}

.docs-layout {
  display: flex;
  gap: 48px;
}

.docs-sidebar {
  width: 220px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  align-self: flex-start;
  max-height: calc(100vh - var(--nav-height) - 48px);
  overflow-y: auto;
}

.docs-nav h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-top: 24px;
  margin-bottom: 8px;
  padding: 0 12px;
}
.docs-nav h4:first-child { margin-top: 0; }

.docs-nav a {
  display: block;
  padding: 6px 12px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all 0.15s;
}
.docs-nav a:hover { color: var(--text-primary); background: var(--accent-bg); }
.docs-nav a.active { color: var(--accent); background: var(--accent-bg); }

.docs-main {
  flex: 1;
  min-width: 0;
}

.doc-section {
  padding-bottom: 48px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.doc-section:last-child { border-bottom: none; }

.doc-section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.doc-section h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
}

.doc-section p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.doc-section ul, .doc-section ol {
  color: var(--text-secondary);
  margin: 0 0 16px 24px;
  line-height: 1.8;
}

.doc-section li { margin-bottom: 4px; }

.doc-section code {
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.doc-section kbd {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.doc-table th, .doc-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.doc-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.doc-table td { color: var(--text-secondary); }
.doc-table td:first-child { color: var(--text-primary); font-weight: 500; }

.doc-info, .doc-warning {
  padding: 16px 20px;
  border-radius: var(--radius);
  margin: 16px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.doc-info {
  background: var(--accent-bg);
  border: 1px solid rgba(88, 166, 255, 0.2);
}

.doc-warning {
  background: rgba(210, 153, 34, 0.08);
  border: 1px solid rgba(210, 153, 34, 0.2);
}

.doc-info strong, .doc-warning strong { color: var(--text-primary); }

.code-block {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 16px 0;
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}

.code-block pre {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-primary);
  overflow-x: auto;
  margin: 0;
}

/* ===== Install Page ===== */
.install-content {
  padding: 64px 0 120px;
}

.install-steps {
  max-width: 760px;
  margin: 0 auto;
}

.install-step {
  display: flex;
  gap: 24px;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(20px);
}
.install-step.visible {
  opacity: 1;
  transform: translateY(0);
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--accent-bg);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  flex-shrink: 0;
}

.step-content { flex: 1; min-width: 0; }
.step-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}
.step-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}
.step-content ul, .step-content ol {
  color: var(--text-secondary);
  margin: 0 0 16px 20px;
  line-height: 1.8;
}
.step-content code {
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.step-reqs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 16px;
}

.req {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-secondary);
}

.req-label {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.install-extra {
  max-width: 760px;
  margin: 64px auto 0;
  padding-top: 64px;
  border-top: 1px solid var(--border);
}

.install-extra h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

.install-extra p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }