| /* Network Security & Cryptography Academic Textbook Master Stylesheet */ | |
| :root { | |
| --bg-dark: #0f172a; | |
| --bg-card: #1e293b; | |
| --bg-subcard: #0f172a; | |
| --text-main: #f8fafc; | |
| --text-muted: #94a3b8; | |
| --accent-primary: #38bdf8; | |
| --accent-secondary: #818cf8; | |
| --accent-success: #34d399; | |
| --accent-warning: #fbbf24; | |
| --accent-danger: #f87171; | |
| --border-color: #334155; | |
| --code-bg: #020617; | |
| } | |
| * { | |
| box-sizing: border-box; | |
| margin: 0; | |
| padding: 0; | |
| } | |
| body { | |
| font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; | |
| background-color: var(--bg-dark); | |
| color: var(--text-main); | |
| line-height: 1.7; | |
| font-size: 1rem; | |
| } | |
| /* Accessibility Focus States */ | |
| a:focus-visible, button:focus-visible, input:focus-visible { | |
| outline: 2px solid var(--accent-primary); | |
| outline-offset: 2px; | |
| } | |
| /* Top Navigation Bar */ | |
| .top-bar { | |
| background-color: #020617; | |
| border-bottom: 1px solid var(--border-color); | |
| padding: 0.8rem 2rem; | |
| display: flex; | |
| justify-content: space-between; | |
| align-items: center; | |
| position: sticky; | |
| top: 0; | |
| z-index: 1000; | |
| } | |
| .brand { | |
| font-weight: 700; | |
| font-size: 1.15rem; | |
| color: var(--accent-primary); | |
| text-decoration: none; | |
| } | |
| .top-nav { | |
| display: flex; | |
| gap: 1.25rem; | |
| list-style: none; | |
| } | |
| .top-nav a { | |
| color: var(--text-muted); | |
| text-decoration: none; | |
| font-size: 0.9rem; | |
| font-weight: 500; | |
| transition: color 0.2s ease; | |
| } | |
| .top-nav a:hover, .top-nav a.active { | |
| color: var(--accent-primary); | |
| } | |
| /* Main Layout */ | |
| .main-container { | |
| display: flex; | |
| max-width: 1400px; | |
| margin: 0 auto; | |
| padding: 2rem 1.5rem; | |
| gap: 2rem; | |
| } | |
| /* Sidebar */ | |
| .sidebar { | |
| width: 280px; | |
| flex-shrink: 0; | |
| background-color: var(--bg-card); | |
| border: 1px solid var(--border-color); | |
| border-radius: 8px; | |
| padding: 1.25rem; | |
| height: fit-content; | |
| position: sticky; | |
| top: 5rem; | |
| max-height: calc(100vh - 6rem); | |
| overflow-y: auto; | |
| } | |
| .sidebar-title { | |
| font-size: 0.8rem; | |
| text-transform: uppercase; | |
| letter-spacing: 0.05em; | |
| color: var(--text-muted); | |
| margin-bottom: 0.75rem; | |
| padding-bottom: 0.4rem; | |
| border-bottom: 1px solid var(--border-color); | |
| } | |
| .sidebar-list { | |
| list-style: none; | |
| margin-bottom: 1.5rem; | |
| } | |
| .sidebar-list li { | |
| margin-bottom: 0.4rem; | |
| } | |
| .sidebar-list a { | |
| color: #cbd5e1; | |
| text-decoration: none; | |
| font-size: 0.88rem; | |
| display: block; | |
| padding: 0.3rem 0.5rem; | |
| border-radius: 4px; | |
| transition: background 0.15s ease, color 0.15s ease; | |
| } | |
| .sidebar-list a:hover, .sidebar-list a.active { | |
| background-color: rgba(56, 189, 248, 0.1); | |
| color: var(--accent-primary); | |
| } | |
| /* Main Content Area */ | |
| .content { | |
| flex-grow: 1; | |
| min-width: 0; | |
| } | |
| .page-title { | |
| font-size: 2rem; | |
| margin-bottom: 0.4rem; | |
| color: var(--text-main); | |
| } | |
| .page-subtitle { | |
| color: var(--text-muted); | |
| font-size: 1rem; | |
| margin-bottom: 1.5rem; | |
| } | |
| /* Cards */ | |
| .card { | |
| background-color: var(--bg-card); | |
| border: 1px solid var(--border-color); | |
| border-radius: 8px; | |
| padding: 1.5rem; | |
| margin-bottom: 1.5rem; | |
| } | |
| .card h2 { | |
| font-size: 1.35rem; | |
| margin-bottom: 0.8rem; | |
| color: var(--accent-primary); | |
| } | |
| .card h3 { | |
| font-size: 1.1rem; | |
| margin-bottom: 0.6rem; | |
| color: var(--accent-secondary); | |
| } | |
| /* Technical Code & Diagrams */ | |
| .diagram-box { | |
| background-color: var(--code-bg); | |
| border: 1px solid var(--border-color); | |
| border-radius: 6px; | |
| padding: 1rem 1.25rem; | |
| font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; | |
| font-size: 0.85rem; | |
| color: #38bdf8; | |
| overflow-x: auto; | |
| white-space: pre; | |
| margin: 1rem 0; | |
| } | |
| .tech-box { | |
| background-color: var(--bg-subcard); | |
| border: 1px solid var(--border-color); | |
| border-left: 4px solid var(--accent-secondary); | |
| border-radius: 6px; | |
| padding: 1.25rem; | |
| margin: 1rem 0; | |
| } | |
| .tech-box h4 { | |
| color: var(--accent-secondary); | |
| margin-bottom: 0.5rem; | |
| font-size: 0.95rem; | |
| } | |
| /* Tables */ | |
| .table-custom { | |
| width: 100%; | |
| border-collapse: collapse; | |
| margin: 1rem 0; | |
| font-size: 0.9rem; | |
| } | |
| .table-custom th, .table-custom td { | |
| padding: 0.75rem 1rem; | |
| text-align: left; | |
| border: 1px solid var(--border-color); | |
| } | |
| .table-custom th { | |
| background-color: #020617; | |
| color: var(--accent-primary); | |
| font-weight: 600; | |
| } | |
| .table-custom tr:nth-child(even) { | |
| background-color: rgba(255, 255, 255, 0.02); | |
| } | |
| /* Badges & Buttons */ | |
| .badge { | |
| display: inline-block; | |
| padding: 0.25rem 0.6rem; | |
| border-radius: 4px; | |
| font-size: 0.75rem; | |
| font-weight: 600; | |
| background-color: rgba(56, 189, 248, 0.15); | |
| color: var(--accent-primary); | |
| border: 1px solid rgba(56, 189, 248, 0.3); | |
| } | |
| /* Footer */ | |
| footer { | |
| background-color: #020617; | |
| border-top: 1px solid var(--border-color); | |
| text-align: center; | |
| padding: 2rem 1.5rem; | |
| color: var(--text-muted); | |
| margin-top: 4rem; | |
| } | |
| footer a { | |
| color: var(--accent-primary); | |
| text-decoration: none; | |
| } | |
| /* Responsive Media Queries */ | |
| @media (max-width: 1024px) { | |
| .main-container { | |
| flex-direction: column; | |
| } | |
| .sidebar { | |
| width: 100%; | |
| position: static; | |
| max-height: none; | |
| } | |
| } | |
| @media (max-width: 640px) { | |
| .top-bar { | |
| flex-direction: column; | |
| gap: 0.8rem; | |
| padding: 1rem; | |
| } | |
| .top-nav { | |
| flex-wrap: wrap; | |
| justify-content: center; | |
| gap: 0.8rem; | |
| } | |
| .page-title { | |
| font-size: 1.5rem; | |
| } | |
| } | |
| /* Print-Friendly Stylesheet */ | |
| @media print { | |
| body { | |
| background-color: #fff ; | |
| color: #000 ; | |
| } | |
| .top-bar, .sidebar, footer { | |
| display: none ; | |
| } | |
| .main-container { | |
| display: block ; | |
| padding: 0 ; | |
| } | |
| .card { | |
| background-color: #fff ; | |
| color: #000 ; | |
| border: 1px solid #ccc ; | |
| break-inside: avoid; | |
| } | |
| } | |
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