/* ═══════════════════════════════════════════════════════════════════ CCNA Study System — Editorial Design System Clean, content-first, typographically driven. ═══════════════════════════════════════════════════════════════════ */ /* Fonts loaded via in HTML for faster discovery — see preconnect hints in */ :root { /* Surface */ --bg: #FAF7F2; --bg-surface: #FFFFFF; --bg-recessed: #F3F0EB; --bg-hover: #F0EDE7; --bg-input: #FFFFFF; /* Borders */ --border: #E2DFD9; --border-strong: #C7C3BC; --rule: #D4D0C8; /* Text */ --ink: #1C1917; --ink-secondary: #57534E; --ink-muted: #A8A29E; --ink-faint: #D6D3D1; /* Accent — warm amber, not blue */ --accent: #B45309; --accent-rgb: 180, 83, 9; --accent-light: #FEF3C7; --accent-dim: #FFFBEB; /* Proficiency (only place color carries meaning) */ --prof-strong: #16A34A; --prof-strong-bg: #F0FDF4; --prof-mid: #CA8A04; --prof-mid-bg: #FEFCE8; --prof-weak: #DC2626; --prof-weak-bg: #FEF2F2; /* Quiz feedback */ --correct: #16A34A; --correct-bg: #F0FDF4; --wrong: #DC2626; --wrong-bg: #FEF2F2; /* Typography */ --font-display: 'Space Grotesk', system-ui, sans-serif; --font-body: 'Source Serif 4', Georgia, 'Times New Roman', serif; --font-mono: 'JetBrains Mono', 'SF Mono', monospace; /* Spacing scale */ --s-xs: 4px; --s-sm: 8px; --s-md: 16px; --s-lg: 24px; --s-xl: 40px; --s-2xl: 64px; --s-3xl: 96px; /* Radius — minimal, editorial */ --radius: 4px; --radius-lg: 8px; --transition: 0.15s ease; --ease-out: cubic-bezier(0.16, 1, 0.3, 1); } /* ── Reset ─────────────────────────────────────────────────────── */ *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } html { font-size: 17px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; /* optimizeLegibility causes layout thrash on Android Chrome during scroll — removed */ text-rendering: optimizeSpeed; /* Remove 300ms tap delay on mobile — all interactive elements respond instantly */ -webkit-tap-highlight-color: transparent; } /* ── Mobile performance ───────────────────────────────────────── */ a, button, input, select, textarea, [role="button"], summary { touch-action: manipulation; } body { font-family: var(--font-body); background: var(--bg); color: var(--ink); line-height: 1.65; min-height: 100vh; } /* ── Layout ────────────────────────────────────────────────────── */ .container { max-width: 820px; margin: 0 auto; padding: var(--s-lg) var(--s-lg); } .container-wide { max-width: 1080px; margin: 0 auto; padding: var(--s-lg); } /* ── Typography ────────────────────────────────────────────────── */ h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; color: var(--ink); } h1 { font-size: 2.4rem; font-weight: 700; letter-spacing: -0.03em; } h2 { font-size: 1.35rem; margin-top: var(--s-2xl); margin-bottom: var(--s-md); padding-bottom: var(--s-sm); border-bottom: 1px solid var(--rule); } h3 { font-size: 1.05rem; font-weight: 600; } p { max-width: 60ch; } small, .small { font-size: 0.82rem; } /* ── Header ────────────────────────────────────────────────────── */ .page-header { padding: var(--s-md) 0 var(--s-sm); margin-bottom: var(--s-md); border-bottom: 2px solid var(--ink); } .page-header h1 { font-size: 2.4rem; margin-bottom: 4px; } .page-header .subtitle { font-family: var(--font-body); color: var(--ink-secondary); font-size: 0.95rem; font-style: italic; } .back-link { display: inline-block; font-family: var(--font-display); color: var(--ink-muted); text-decoration: none; font-size: 0.8rem; letter-spacing: 0.03em; text-transform: uppercase; margin-bottom: var(--s-sm); transition: color var(--transition); } .back-link:hover { color: var(--ink); } /* ── Navigation ────────────────────────────────────────────────── */ nav.top-nav { display: flex; flex-wrap: wrap; justify-content: flex-start; align-items: center; gap: 0; border-bottom: 1px solid var(--rule); margin-bottom: var(--s-md); padding-left: var(--s-lg); padding-right: var(--s-lg); position: relative; z-index: 200; } nav.top-nav a { font-family: var(--font-display); color: var(--ink-muted); text-decoration: none; padding: 8px 10px; min-height: 36px; display: inline-flex; align-items: center; white-space: nowrap; font-size: 0.72rem; font-weight: 500; letter-spacing: 0.02em; text-transform: uppercase; border-bottom: 2px solid transparent; transition: color var(--transition), border-bottom-color var(--transition); margin-bottom: -1px; } nav.top-nav a:hover { color: var(--ink); } nav.top-nav a.active { color: var(--ink); border-bottom-color: var(--ink); font-weight: 600; } /* ── Nav groups (dropdown parents) ── */ .nav-group{position:relative} /* Invisible bridge below button — prevents hover dropout in the gap */ .nav-group::after{content:'';position:absolute;bottom:-8px;left:0;right:0;height:8px;z-index:101} .nav-group-btn{ font-family:var(--font-display);color:var(--ink-muted);background:none; border:none;border-bottom:2px solid transparent; padding:8px 12px;min-height:36px; display:inline-flex;align-items:center;gap:5px; white-space:nowrap;font-size:.72rem;font-weight:500; text-transform:uppercase;letter-spacing:.02em; cursor:pointer;transition:color .15s,background .15s; margin-bottom:-1px;border-radius:var(--radius) var(--radius) 0 0; } .nav-group-btn:hover{color:var(--ink);background:var(--bg-recessed)} .nav-group.active .nav-group-btn{color:var(--ink);font-weight:600;border-bottom-color:var(--ink)} .nav-group.open .nav-group-btn{color:var(--ink);background:var(--bg-surface);border-bottom-color:transparent} /* Item count badge */ .nav-count{ font-family:var(--font-mono);font-size:.52rem;font-weight:700; color:var(--ink-faint);min-width:16px;height:16px; display:inline-flex;align-items:center;justify-content:center; border:1px solid var(--border);border-radius:100px; transition:color .15s,border-color .15s,background .15s; } .nav-group-btn:hover .nav-count{color:var(--ink-muted);border-color:var(--border-strong)} .nav-group.open .nav-count{color:var(--accent);border-color:var(--accent);background:rgba(var(--accent-rgb),.06)} /* Caret — clear and animated */ .nav-caret{font-size:.5rem;opacity:.35;transition:transform .25s var(--ease-out),opacity .15s} .nav-group-btn:hover .nav-caret{opacity:.6} .nav-group.open .nav-caret{transform:rotate(180deg);opacity:.7} /* Dropdown panel — slide + fade */ .nav-dropdown{ position:absolute;top:calc(100% + 1px);left:0; background:var(--bg-surface); border:1px solid var(--border);border-top:2px solid var(--accent); border-radius:0 var(--radius-lg) var(--radius-lg) var(--radius-lg); box-shadow:0 12px 32px rgba(0,0,0,.08),0 2px 6px rgba(0,0,0,.04); z-index:100;min-width:200px;padding:6px 0; opacity:0;visibility:hidden; transform:translateY(-6px); transition:opacity .18s,visibility .18s,transform .22s var(--ease-out); pointer-events:none; } .nav-group.open .nav-dropdown{ opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto; } /* Desktop: hover opens dropdown (avoids click-through bugs) */ @media(min-width:641px){ .nav-group:hover>.nav-dropdown{ opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto; } .nav-group:hover>.nav-group-btn{color:var(--ink);background:var(--bg-recessed)} .nav-group:hover .nav-caret{opacity:.6} } /* Wide dropdown — single column, scrollable for large menus */ .nav-dropdown-wide{min-width:220px;padding:6px 0;max-height:70vh;overflow-y:auto} /* Dropdown items */ nav.top-nav .nav-drop-item{ display:block;font-family:var(--font-display);font-size:.75rem; color:var(--ink-muted);text-decoration:none; padding:8px 16px 8px 18px;white-space:nowrap; border-left:2px solid transparent; transition:color .12s,background .12s,border-color .12s,padding-left .15s var(--ease-out); } nav.top-nav .nav-drop-item:hover{ background:var(--bg-recessed);color:var(--ink); border-left-color:var(--accent);padding-left:22px; } nav.top-nav .nav-drop-item.active{color:var(--ink);font-weight:600;border-left-color:var(--accent)} /* 3D Topology link — bold glow treatment */ .nav-3d-link{font-weight:700;color:#4a9eff!important;position:relative;background:linear-gradient(90deg,rgba(74,158,255,.06),rgba(74,158,255,.12),rgba(74,158,255,.06))} .nav-3d-link:hover{background:linear-gradient(90deg,rgba(74,158,255,.10),rgba(74,158,255,.22),rgba(74,158,255,.10))!important;color:#fff!important;text-shadow:0 0 8px rgba(74,158,255,.6)} .nav-3d-badge{display:inline-block;font-family:var(--font-mono);font-size:.58rem;font-weight:800;letter-spacing:.06em;background:linear-gradient(135deg,#4a9eff,#7c3aed);color:#fff;padding:1px 5px;border-radius:3px;vertical-align:middle;margin-right:2px;box-shadow:0 0 6px rgba(74,158,255,.4),0 0 12px rgba(124,58,237,.2);animation:badge-pulse 2s ease-in-out 3} @keyframes badge-pulse{0%,100%{box-shadow:0 0 6px rgba(74,158,255,.4),0 0 12px rgba(124,58,237,.2)}50%{box-shadow:0 0 10px rgba(74,158,255,.7),0 0 20px rgba(124,58,237,.4)}} /* Cert toggle — pinned right corner with separator */ .cert-toggle{display:flex;align-items:center;margin-left:auto;padding-left:12px;border-left:1px solid var(--border);flex-shrink:0;gap:2px} .ct-opt{font-family:var(--font-display);font-size:.68rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:5px 12px;border:1px solid transparent;border-radius:100px;background:transparent;color:var(--ink-secondary);cursor:pointer;transition:all .15s;white-space:nowrap;line-height:1} .ct-opt:hover{color:var(--ink);background:var(--bg-hover)} .ct-opt.on{background:var(--accent);color:#fff;border-color:var(--accent);cursor:default} .ct-opt.on:hover{background:var(--accent)} nav.top-nav.netplus-mode .ct-opt.on{background:#DC2626;border-color:#DC2626} nav.top-nav.netplus-mode .ct-opt.on:hover{background:#DC2626} /* ── Mobile hamburger + drawer (hidden on desktop) ────────────── */ .nav-hamburger,.nav-mobile-label{display:none} .nav-drawer{display:none} /* Net+ mode — red nav accents */ nav.top-nav.netplus-mode{border-bottom:2px solid #DC2626} nav.top-nav.netplus-mode a.active{border-bottom-color:#DC2626} nav.top-nav.netplus-mode .nav-group.active .nav-group-btn{border-bottom-color:#DC2626} nav.top-nav.netplus-mode .nav-dropdown{border-top-color:#DC2626} nav.top-nav.netplus-mode .nav-group.open .nav-count{color:#DC2626;border-color:#DC2626;background:rgba(220,38,38,.06)} nav.top-nav.netplus-mode .nav-drop-item:hover,nav.top-nav.netplus-mode .nav-drop-item.active{border-left-color:#DC2626} /* Beta badge */ .beta-badge{position:fixed;bottom:12px;left:12px;z-index:300;display:flex;align-items:center;gap:6px} .beta-tag{font-family:var(--font-mono);font-size:.6rem;font-weight:700;background:#DC2626;color:#fff;padding:3px 8px;border-radius:4px;letter-spacing:.08em} .beta-bug{font-family:var(--font-display);font-size:.6rem;color:var(--ink-muted);text-decoration:none;padding:3px 8px;border:1px solid var(--border);border-radius:4px;transition:all .15s} .beta-bug:hover{border-color:var(--accent);color:var(--accent)} /* ── Card — used sparingly, only for interactive elements ─────── */ .card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--s-lg); contain: layout style paint; } .card:hover { border-color: var(--border-strong); } .card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--s-md); } .card-header h2 { font-size: 1.05rem; margin: 0; padding: 0; border: 0; } .card-header h3 { font-size: 0.95rem; } /* ── Grids ─────────────────────────────────────────────────────── */ .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s-md); } .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-md); } .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-md); } @media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } } @media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } h1 { font-size: 1.8rem; } h2 { font-size: 1.15rem; } /* ── Compact nav bar — hamburger + title ──────────────────── */ nav.top-nav{ position:sticky;top:0;z-index:200; display:flex;flex-wrap:nowrap;align-items:center; padding:0 var(--s-sm) 0 0;gap:0; min-height:52px; background:var(--bg); border-bottom:1px solid var(--rule); } .nav-hamburger{ display:flex;align-items:center;justify-content:center; width:52px;height:52px;flex-shrink:0; background:none;border:none;cursor:pointer; color:var(--ink);padding:0; } .nav-hamburger svg{transition:transform .25s var(--ease-out)} .nav-mobile-label{ display:block;flex:1; font-family:var(--font-display); font-size:.88rem;font-weight:700;color:var(--ink); } /* Hide inline desktop nav items */ nav.top-nav>a,nav.top-nav>.nav-group,nav.top-nav>.cert-toggle{display:none!important} /* ── Drawer overlay ───────────────────────────────────────── */ .nav-drawer{ display:block; position:fixed;top:52px;left:0;right:0;bottom:0;z-index:199; background:var(--bg); overflow-y:auto;-webkit-overflow-scrolling:touch; padding:var(--s-xs) 0 80px; opacity:0;visibility:hidden; transform:translateY(-8px); transition:opacity .2s,visibility .2s,transform .25s var(--ease-out); } .nav-drawer.open{opacity:1;visibility:visible;transform:translateY(0)} /* Drawer links */ .nav-drawer .dr-link{ display:flex;align-items:center; min-height:48px;padding:0 var(--s-lg); font-family:var(--font-display);font-size:.88rem;font-weight:500; color:var(--ink-secondary);text-decoration:none; border-bottom:1px solid var(--border); transition:background .1s; } .nav-drawer .dr-link:active{background:var(--bg-hover)} .nav-drawer .dr-link.active{color:var(--ink);font-weight:700} /* Drawer section headers */ .nav-drawer .dr-section{ padding:16px var(--s-lg) 6px; font-family:var(--font-display);font-size:.65rem;font-weight:700; text-transform:uppercase;letter-spacing:.08em;color:var(--ink-muted); } .nav-drawer .dr-section:first-child{padding-top:var(--s-sm)} /* Drawer children — indented */ .nav-drawer .dr-child{padding-left:calc(var(--s-lg) + 14px);font-size:.82rem} /* Drawer cert toggle */ .nav-drawer .dr-cert{ display:flex;justify-content:center;gap:4px; padding:var(--s-md) var(--s-lg); border-top:1px solid var(--border);margin-top:var(--s-sm); } /* ── Mobile tap feedback ──────────────────────────────────── */ .btn:active,.quiz-option:active{transform:scale(0.98);opacity:0.85} /* ── Performance ──────────────────────────────────────────── */ body::before{display:none!important} .card{contain:layout style paint} } /* ── Buttons ───────────────────────────────────────────────────── */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.01em; padding: 10px 22px; min-height: 44px; border-radius: var(--radius); cursor: pointer; border: 1px solid transparent; /* Scope to properties that actually change — not transition:all */ transition: background var(--transition), color var(--transition), border-color var(--transition); text-decoration: none; } .btn-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); } .btn-primary:hover { background: #292524; } .btn-secondary { background: transparent; color: var(--ink); border-color: var(--border-strong); } .btn-secondary:hover { background: var(--bg-hover); border-color: var(--ink-muted); } .btn-success { background: var(--prof-strong); color: white; } .btn-danger { background: var(--prof-weak); color: white; } .btn-sm { padding: 5px 12px; font-size: 0.78rem; } .btn-lg { padding: 14px 32px; font-size: 0.9rem; } .btn-ghost { background: transparent; color: var(--ink-secondary); border-color: transparent; padding: 6px 12px; } .btn-ghost:hover { color: var(--ink); background: var(--bg-hover); } /* ── Progress bars ─────────────────────────────────────────────── */ .progress-bar { width: 100%; height: 6px; background: var(--bg-recessed); border-radius: 3px; overflow: hidden; } .progress-bar .fill { height: 100%; border-radius: 3px; transition: width 0.5s ease; } .progress-bar .fill.green { background: var(--prof-strong); } .progress-bar .fill.yellow { background: var(--prof-mid); } .progress-bar .fill.red { background: var(--prof-weak); } .progress-bar .fill.blue { background: var(--ink); } /* ── Badges ────────────────────────────────────────────────────── */ .badge { display: inline-flex; align-items: center; font-family: var(--font-display); padding: 2px 10px; border-radius: var(--radius); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; } .badge-green { background: var(--prof-strong-bg); color: var(--prof-strong); } .badge-yellow { background: var(--prof-mid-bg); color: var(--prof-mid); } .badge-red { background: var(--prof-weak-bg); color: var(--prof-weak); } .badge-blue { background: var(--accent-light); color: var(--accent); } .badge-purple { background: #F5F3FF; color: #7C3AED; } /* ── Stat blocks — left-aligned, no card wrappers ──────────────── */ .stat { text-align: left; padding: 0; } .stat .value { font-size: 2rem; font-weight: 700; font-family: var(--font-display); line-height: 1; color: var(--ink); } .stat .label { font-family: var(--font-display); color: var(--ink-muted); font-size: 0.72rem; margin-top: 4px; text-transform: uppercase; letter-spacing: 0.06em; } /* ── Quiz options ──────────────────────────────────────────────── */ .quiz-option { display: flex; align-items: flex-start; width: 100%; text-align: left; padding: 14px 18px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); color: var(--ink); font-family: var(--font-body); font-size: 0.95rem; cursor: pointer; transition: background var(--transition), border-color var(--transition), color var(--transition); line-height: 1.5; } .quiz-option:hover:not(.disabled) { border-color: var(--ink); background: var(--bg-recessed); } .quiz-option.selected { border-color: var(--accent); background: var(--accent-dim); } .quiz-option.correct { border-color: var(--correct); background: var(--correct-bg); } .quiz-option.wrong { border-color: var(--wrong); background: var(--wrong-bg); } .quiz-option.disabled { cursor: default; opacity: 0.6; } .quiz-option.idk-option { border-style: dashed; background: transparent; color: var(--ink-secondary); margin-top: 6px; } .quiz-option.idk-option .option-letter { background: transparent; border: 1px dashed var(--border); color: var(--ink-secondary); } .quiz-option.idk-option:hover:not(.disabled) { border-color: var(--ink-secondary); background: var(--bg-recessed); } .quiz-option.idk-option.selected { border-color: var(--accent); border-style: solid; background: var(--accent-dim); color: var(--ink); } .quiz-option.idk-option.disabled { opacity: 0.4; } .quiz-option .option-letter { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; border-radius: 50%; background: var(--bg-recessed); font-family: var(--font-display); font-weight: 700; font-size: 0.75rem; margin-right: 12px; flex-shrink: 0; color: var(--ink-secondary); } .explanation-box { margin-top: var(--s-md); padding: var(--s-md) var(--s-lg); background: var(--bg-recessed); border-left: 3px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; font-size: 0.9rem; line-height: 1.7; } .explanation-box .cisco-cmd { display: inline-block; margin-top: 8px; padding: 3px 10px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); } /* ── Timer ─────────────────────────────────────────────────────── */ .timer { font-family: var(--font-mono); font-size: 1rem; font-weight: 600; color: var(--ink-secondary); } .timer.warning { color: var(--prof-mid); } .timer.danger { color: var(--prof-weak); } /* ── Tables ────────────────────────────────────────────────────── */ table { width: 100%; border-collapse: collapse; } th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); } th { font-family: var(--font-display); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-muted); font-weight: 600; } /* ── Proficiency colors ────────────────────────────────────────── */ .proficiency-green { color: var(--prof-strong); } .proficiency-yellow { color: var(--prof-mid); } .proficiency-red { color: var(--prof-weak); } .proficiency-bg-green { background: var(--prof-strong-bg); border-color: var(--prof-strong) !important; } .proficiency-bg-yellow { background: var(--prof-mid-bg); border-color: var(--prof-mid) !important; } .proficiency-bg-red { background: var(--prof-weak-bg); border-color: var(--prof-weak) !important; } /* ── Tooltip ───────────────────────────────────────────────────── */ .tooltip { position: relative; } .tooltip::after { content: attr(data-tooltip); position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%); padding: 6px 12px; background: var(--ink); border-radius: var(--radius); font-family: var(--font-display); font-size: 0.75rem; color: var(--bg); white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity var(--transition); } .tooltip:hover::after { opacity: 1; } /* ── Animations — restrained, purposeful ───────────────────────── */ @keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } } .fade-in { animation: fadeIn 0.3s var(--ease-out) forwards; } /* ── Focus states — keyboard accessibility ─────────────────────── */ :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .quiz-option:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-color: var(--accent); } nav.top-nav a:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; } /* ── Reduced motion ────────────────────────────────────────────── */ @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } } /* ── Selection ─────────────────────────────────────────────────── */ ::selection { background: var(--accent-light); color: var(--ink); } /* ── Horizontal rule as section divider ─────────────────────────── */ hr, .divider { border: none; border-top: 1px solid var(--rule); margin: var(--s-xl) 0; } /* ── Amber Banner (reusable hero/callout) ─────────────────────── */ .amber-banner{background:linear-gradient(135deg,#78350F 0%,#92400E 50%,#B45309 100%);color:#fff;border-radius:var(--radius-lg);padding:24px 28px;margin-bottom:var(--s-lg);position:relative;overflow:hidden} .amber-banner::before{content:'';position:absolute;top:-40%;right:-15%;width:200px;height:200px;background:rgba(255,255,255,.03);border-radius:50%;pointer-events:none} .amber-banner h2,.amber-banner h3{font-family:var(--font-display);font-weight:800;color:#fff;margin-bottom:4px;letter-spacing:-.01em} .amber-banner p{color:rgba(255,255,255,.8);line-height:1.5} .amber-banner code{font-family:var(--font-mono);font-size:.76rem;background:rgba(255,255,255,.12);padding:2px 8px;border-radius:4px;color:#fff} .amber-banner ol,.amber-banner ul{color:rgba(255,255,255,.9);line-height:2.2;padding-left:20px;margin:0} .amber-banner ol li::marker{font-weight:700} .amber-banner a.amber-btn{display:inline-block;font-family:var(--font-display);font-size:.82rem;font-weight:700;color:#78350F;background:#fff;padding:10px 22px;border-radius:8px;text-decoration:none;white-space:nowrap;transition:background .2s,transform .15s} .amber-banner a.amber-btn:hover{background:#FEF3C7;transform:translateY(-1px)} .amber-banner .amber-muted{font-size:.78rem;opacity:.55;margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.12)} /* ── Utility ───────────────────────────────────────────────────── */ .text-center { text-align: center; } .text-right { text-align: right; } .text-muted { color: var(--ink-muted); } .text-secondary { color: var(--ink-secondary); } .text-green { color: var(--prof-strong); } .text-yellow { color: var(--prof-mid); } .text-red { color: var(--prof-weak); } .text-blue { color: var(--accent); } .text-mono { font-family: var(--font-mono); } .font-display { font-family: var(--font-display); } .mt-1 { margin-top: var(--s-sm); } .mt-2 { margin-top: var(--s-md); } .mt-3 { margin-top: var(--s-lg); } .mt-4 { margin-top: var(--s-xl); } .mb-1 { margin-bottom: var(--s-sm); } .mb-2 { margin-bottom: var(--s-md); } .mb-3 { margin-bottom: var(--s-lg); } .gap-1 { gap: var(--s-sm); } .gap-2 { gap: var(--s-md); } .flex { display: flex; } .flex-col { flex-direction: column; } .items-center { align-items: center; } .justify-between { justify-content: space-between; } .flex-wrap { flex-wrap: wrap; } .flex-1 { flex: 1; } .hidden { display: none !important; } /* ── Diagram palette — intentional blues for visualizations ───────── These are NOT UI chrome. They represent data/network concepts in interactive diagrams. Do not "fix" them to amber. #5b8def — packets, data flow, active traces (visuals/acl.html) #1e3a5f — dark packet fill, SVG backgrounds (visuals/acl.html) #3b82f6 — VLAN 10 elements in topology diagrams (visuals/vlan.html) rgba(91,141,239,...) — Link-Local address type (visuals/ipv6.html), ACL column highlights, packet trail glow ──────────────────────────────────────────────────────────────────── */ /* Legacy compat — old var names still referenced by some pages */ :root { --green: var(--prof-strong); --green-dim: var(--prof-strong-bg); --yellow: var(--prof-mid); --yellow-dim: var(--prof-mid-bg); --red: var(--prof-weak); --red-dim: var(--prof-weak-bg); --blue: var(--accent); --blue-dim: var(--accent-dim); --cyan: var(--accent); --purple: #7C3AED; --purple-dim: #F5F3FF; --text-primary: var(--ink); --text-secondary: var(--ink-secondary); --text-muted: var(--ink-muted); --bg-primary: var(--bg); --bg-secondary: var(--bg-recessed); --bg-card: var(--bg-surface); --bg-input: var(--bg-surface); --font-sans: var(--font-display); --radius-sm: 4px; --radius-md: 6px; --shadow-md: 0 2px 8px rgba(0,0,0,0.08); --shadow-lg: 0 4px 16px rgba(0,0,0,0.12); } /* ══════════════════════════════════════════════════════════════════ Nav polish — site-wide glass bar, animated underlines, spring dropdowns, staggered items, gradient CORE logo. Hover-triggered motion only; respects prefers-reduced-motion globally. ══════════════════════════════════════════════════════════════════ */ nav.top-nav { background: rgba(250, 247, 242, 0.72) !important; backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid rgba(180, 83, 9, 0.12) !important; box-shadow: 0 4px 24px rgba(28, 25, 23, 0.05), 0 1px 0 rgba(255, 255, 255, 0.5) inset; animation: navEnter 0.5s var(--ease-out) both; /* breathing room top + bottom */ padding-top: 10px; padding-bottom: 10px; padding-left: 28px; padding-right: 28px; gap: 4px; margin-bottom: 24px; } /* Roomier hit targets for every top-level link + group button */ nav.top-nav > a, nav.top-nav .nav-group-btn { padding: 10px 16px !important; min-height: 44px !important; border-radius: 8px; margin-bottom: 0 !important; } /* Nudge the animated underline to match the new padding */ nav.top-nav > a::before, nav.top-nav .nav-group-btn::before { bottom: 4px !important; } /* Dropdown items — a touch more vertical room + padding */ nav.top-nav .nav-drop-item { padding: 10px 18px 10px 22px !important; } nav.top-nav .nav-drop-item:hover { padding-left: 26px !important; } /* Cert toggle — align with the added nav padding */ .cert-toggle { padding-left: 16px !important; margin-left: auto !important; } .ct-opt { padding: 7px 14px !important; } @keyframes navEnter { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } } /* Sits above the fixed 3D gradient line */ nav.top-nav::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: linear-gradient(90deg, transparent 10%, rgba(180, 83, 9, 0.35) 50%, transparent 90%); pointer-events: none; } /* Top-level links + group buttons */ nav.top-nav > a, nav.top-nav .nav-group-btn { position: relative; transition: color 0.2s var(--ease-out), transform 0.28s var(--ease-out), letter-spacing 0.28s var(--ease-out), background 0.2s; } nav.top-nav > a::before, nav.top-nav .nav-group-btn::before { content: ''; position: absolute; left: 50%; right: 50%; bottom: 2px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: 0; transition: left 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), right 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s; pointer-events: none; } nav.top-nav > a:hover::before, nav.top-nav .nav-group-btn:hover::before, nav.top-nav .nav-group.open > .nav-group-btn::before, nav.top-nav .nav-group.active > .nav-group-btn::before, nav.top-nav > a.active::before { left: 10%; right: 10%; opacity: 1; } nav.top-nav > a:hover, nav.top-nav .nav-group-btn:hover { transform: translateY(-1px); letter-spacing: 0.04em; color: var(--ink) !important; } /* Glowing amber soft-fill on active top-level link */ nav.top-nav > a.active { background: linear-gradient(180deg, rgba(180, 83, 9, 0) 0%, rgba(180, 83, 9, 0.04) 40%, rgba(180, 83, 9, 0.08) 100%); border-radius: 6px 6px 0 0; } /* CORE + Net+ logo links — gradient text with soft bloom */ nav.top-nav > a[href="core.html"], nav.top-nav > a[href="netplus.html"] { font-weight: 700 !important; background: linear-gradient(135deg, var(--ink) 0%, var(--accent) 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; transition: filter 0.3s var(--ease-out), letter-spacing 0.28s var(--ease-out), transform 0.28s var(--ease-out); } nav.top-nav > a[href="core.html"]:hover, nav.top-nav > a[href="netplus.html"]:hover { filter: brightness(1.25) saturate(1.35) drop-shadow(0 1px 6px rgba(180, 83, 9, 0.25)); letter-spacing: 0.05em; transform: translateY(-1px); } nav.top-nav.netplus-mode > a[href="netplus.html"] { background: linear-gradient(135deg, var(--ink) 0%, #DC2626 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; } /* Dropdown panel — spring open, glass, deeper shadow */ .nav-dropdown { background: rgba(255, 255, 255, 0.92) !important; backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px); border: 1px solid rgba(180, 83, 9, 0.14) !important; border-top: 2px solid var(--accent) !important; box-shadow: 0 24px 48px rgba(28, 25, 23, 0.1), 0 6px 14px rgba(28, 25, 23, 0.05), 0 0 0 1px rgba(255, 255, 255, 0.7) inset !important; transform-origin: top left; transform: translateY(-10px) scale(0.96); transition: opacity 0.2s, visibility 0.2s, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1); } .nav-group.open > .nav-dropdown, .nav-group:hover > .nav-dropdown { transform: translateY(0) scale(1); } /* Dropdown items — stagger cascade */ .nav-drop-item { position: relative; opacity: 0; transform: translateX(-8px); transition: opacity 0.22s var(--ease-out), transform 0.3s var(--ease-out), color 0.12s, background 0.15s, border-color 0.12s, padding-left 0.18s var(--ease-out); } .nav-group.open .nav-drop-item, .nav-group:hover > .nav-dropdown .nav-drop-item { opacity: 1; transform: translateX(0); } .nav-group.open .nav-drop-item:nth-child(1), .nav-group:hover > .nav-dropdown .nav-drop-item:nth-child(1) { transition-delay: 0.03s; } .nav-group.open .nav-drop-item:nth-child(2), .nav-group:hover > .nav-dropdown .nav-drop-item:nth-child(2) { transition-delay: 0.05s; } .nav-group.open .nav-drop-item:nth-child(3), .nav-group:hover > .nav-dropdown .nav-drop-item:nth-child(3) { transition-delay: 0.07s; } .nav-group.open .nav-drop-item:nth-child(4), .nav-group:hover > .nav-dropdown .nav-drop-item:nth-child(4) { transition-delay: 0.09s; } .nav-group.open .nav-drop-item:nth-child(5), .nav-group:hover > .nav-dropdown .nav-drop-item:nth-child(5) { transition-delay: 0.11s; } .nav-group.open .nav-drop-item:nth-child(n+6), .nav-group:hover > .nav-dropdown .nav-drop-item:nth-child(n+6) { transition-delay: 0.13s; } /* Item row accent — amber bar scales in on hover */ .nav-drop-item::before { content: ''; position: absolute; left: 0; top: 8%; bottom: 8%; width: 3px; background: linear-gradient(180deg, var(--accent), #D97706); border-radius: 2px; transform: scaleY(0); transform-origin: center; transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1); } .nav-drop-item:hover::before, .nav-drop-item.active::before { transform: scaleY(1); } .nav-drop-item:hover { background: linear-gradient(90deg, rgba(180, 83, 9, 0.08) 0%, rgba(180, 83, 9, 0.02) 100%) !important; } /* Count pill — subtle glow on open */ .nav-group.open .nav-count, .nav-group:hover .nav-count { box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.08); } /* Cert toggle — nicer press */ .ct-opt { transition: background 0.18s var(--ease-out), color 0.18s, transform 0.22s var(--ease-out), box-shadow 0.22s; } .ct-opt:hover:not(.on) { transform: translateY(-1px); } .ct-opt.on { box-shadow: 0 2px 10px rgba(180, 83, 9, 0.28), 0 0 0 1px rgba(180, 83, 9, 0.4); } nav.top-nav.netplus-mode .ct-opt.on { box-shadow: 0 2px 10px rgba(220, 38, 38, 0.28), 0 0 0 1px rgba(220, 38, 38, 0.4); } /* Hamburger — rotate on open */ .nav-hamburger svg { transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); } .nav-hamburger[aria-label="Close navigation"] svg { transform: rotate(90deg); } /* Mobile drawer — staggered item slide-in */ @media (max-width: 600px) { .nav-drawer.open .dr-link, .nav-drawer.open .dr-section { animation: drawerItemIn 0.35s var(--ease-out) both; } .nav-drawer.open .dr-link:nth-child(1), .nav-drawer.open .dr-section:nth-child(1) { animation-delay: 0.04s; } .nav-drawer.open .dr-link:nth-child(2), .nav-drawer.open .dr-section:nth-child(2) { animation-delay: 0.06s; } .nav-drawer.open .dr-link:nth-child(3), .nav-drawer.open .dr-section:nth-child(3) { animation-delay: 0.08s; } .nav-drawer.open .dr-link:nth-child(4), .nav-drawer.open .dr-section:nth-child(4) { animation-delay: 0.10s; } .nav-drawer.open .dr-link:nth-child(5), .nav-drawer.open .dr-section:nth-child(5) { animation-delay: 0.12s; } .nav-drawer.open .dr-link:nth-child(6), .nav-drawer.open .dr-section:nth-child(6) { animation-delay: 0.14s; } .nav-drawer.open .dr-link:nth-child(n+7), .nav-drawer.open .dr-section:nth-child(n+7) { animation-delay: 0.16s; } @keyframes drawerItemIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } } /* Drawer itself gets glass */ .nav-drawer.open { background: rgba(250, 247, 242, 0.96) !important; backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px); } /* Mobile nav bar glass too */ nav.top-nav { background: rgba(250, 247, 242, 0.85) !important; } } /* ═══════════════════════════════════════════════════════════════════ Background wallpaper — Packet Tracer-style topology, whisper-subtle Tiled SVG of devices + dashed links, drifts slowly to imply traffic. Layer 1. Never competes with content. z-index: -1, pointer-events: none. ═══════════════════════════════════════════════════════════════════ */ body::before { content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .09; background-image: url('../img/bg-topology.svg'); background-repeat: repeat; background-size: 420px 320px; animation: bgTopologyDrift 120s linear infinite; will-change: background-position; } @keyframes bgTopologyDrift { to { background-position: 420px 320px; } } @media (prefers-reduced-motion: reduce) { body::before { animation: none; } }