/* ============================================================
   CyberSchool — shared stylesheet (W3Schools-inspired layout)
   Reused by every page. Edit here to restyle the whole course.
   ============================================================ */

:root{
  /* teal = the cybersecurity course identity, on the shared TechDevs warm base */
  --green:#0F766E;
  --green-dark:#0B5A54;
  --green-darker:#084842;
  --green-soft:#E4F1EF;
  --sidebar:#0B1120;
  --sidebar-hover:#1A2640;
  --code-bg:#22243c;
  --code-ink:#e8e9f5;
  --tryit-bg:#f1efe9;
  --note-bg:#FEF3C7;
  --note-border:#D97706;
  --warn-bg:#FBECEB;
  --warn-border:#C0504A;
  --tip-bg:#E4F1EF;
  --tip-border:#0F766E;
  --text:#1C1917;
  --muted:#6B6560;
  --line:#E5E1DA;
  --paper:#F6F3EE;
  --mono:"Cascadia Code",Consolas,ui-monospace,"SF Mono",monospace;
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:"Inter","Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--paper);
}

/* ---------- Top bar ---------- */
.topbar{
  background:var(--sidebar);
  color:#fff;
  height:54px;
  display:flex;
  align-items:center;
  padding:0 16px;
  position:sticky;
  top:0;
  z-index:1000;
}
.topbar .brand{
  font-weight:bold;
  font-size:20px;
  color:#fff;
  text-decoration:none;
  letter-spacing:.5px;
}
.topbar .brand span{color:var(--green);}
.topbar .tagline{
  margin-left:14px;font-size:12px;color:#bbb;display:none;
}
.menu-toggle{
  display:none;background:var(--green);color:#fff;border:none;
  font-size:20px;padding:6px 12px;border-radius:4px;cursor:pointer;margin-left:auto;
}
@media(min-width:900px){.topbar .tagline{display:inline;}}

/* ---------- Layout ---------- */
.layout{display:flex;align-items:flex-start;}
.sidebar{
  width:250px;min-width:250px;background:#fff;border-right:1px solid var(--line);
  padding:16px 0;height:calc(100vh - 54px);overflow-y:auto;position:sticky;top:54px;
}
.sidebar h3{
  font-size:13px;text-transform:uppercase;color:var(--muted);
  padding:10px 20px 4px;margin:0;letter-spacing:.5px;
}
.sidebar a{
  display:block;padding:8px 20px;color:#000;text-decoration:none;font-size:14px;
  border-left:3px solid transparent;
}
.sidebar a:hover{background:#f1f1f1;}
.sidebar a.active{background:#E9EFFC;border-left:3px solid var(--green);font-weight:bold;color:var(--green-darker);}

.content{flex:1;padding:24px 40px 80px;max-width:900px;min-width:0;}

@media(max-width:900px){
  .menu-toggle{display:block;}
  .sidebar{
    position:fixed;left:0;top:54px;z-index:900;transform:translateX(-100%);
    transition:transform .2s ease;box-shadow:2px 0 8px rgba(0,0,0,.15);
  }
  .sidebar.open{transform:translateX(0);}
  .content{padding:18px 18px 60px;}
}

/* ---------- Headings & text ---------- */
h1{font-size:36px;margin:6px 0 6px;}
h2{font-size:26px;margin:34px 0 10px;border-bottom:1px solid var(--line);padding-bottom:6px;}
h3{font-size:20px;margin:24px 0 8px;}
h4{font-size:16px;margin:18px 0 6px;}
p{margin:10px 0;}
a{color:var(--green-darker);}
.lead{font-size:17px;color:#333;}
.eyebrow{color:var(--green-darker);font-weight:bold;text-transform:uppercase;font-size:12px;letter-spacing:1px;}

ul,ol{margin:10px 0 10px 22px;}
li{margin:5px 0;}

table.data{border-collapse:collapse;width:100%;margin:14px 0;font-size:14px;}
table.data th,table.data td{border:1px solid #ccc;padding:8px 10px;text-align:left;vertical-align:top;}
table.data th{background:var(--green);color:#fff;}
table.data tr:nth-child(even){background:#f6f6f6;}

kbd{background:#eee;border:1px solid #b4b4b4;border-radius:3px;padding:1px 5px;font-family:monospace;font-size:13px;}

/* ---------- Analogy / callout boxes ---------- */
.analogy,.note,.warn,.tip,.why{
  padding:14px 16px;margin:16px 0;border-radius:4px;font-size:14.5px;
}
.analogy{background:#eef4ff;border-left:6px solid #2c4a7c;}
.note{background:var(--note-bg);border-left:6px solid var(--note-border);}
.warn{background:var(--warn-bg);border-left:6px solid var(--warn-border);}
.tip{background:var(--tip-bg);border-left:6px solid var(--tip-border);}
.why{background:#f4ecff;border-left:6px solid #7e57c2;}
.analogy strong,.note strong,.warn strong,.tip strong,.why strong{display:block;margin-bottom:4px;}

/* ---------- Code + Try It Yourself ---------- */
.code{
  background:var(--code-bg);color:var(--code-ink);padding:14px 16px;border-left:4px solid var(--green);
  font-family:var(--mono);font-size:13.5px;white-space:pre-wrap;
  word-break:break-word;overflow-x:auto;margin:12px 0;border-radius:0 6px 6px 0;line-height:1.7;
}
.code .cmt{color:#8b93a8;font-style:italic;}
.code .kw{color:#7dd3c8;font-weight:bold;}
.code .str{color:#e8b578;}
.code .flag{color:#b3a4e8;}
.code .prompt{color:#5ec5b6;font-weight:bold;}

.tryit{
  background:var(--tryit-bg);padding:16px;margin:16px 0;border-radius:6px;
}
.tryit .label{font-weight:bold;font-size:13px;color:#333;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;}
.tryit-btn,.btn{
  display:inline-block;background:var(--green);color:#fff;text-decoration:none;
  border:none;padding:9px 18px;border-radius:5px;cursor:pointer;font-size:14px;font-weight:bold;
}
.tryit-btn:hover,.btn:hover{background:var(--green-dark);}
.btn.ghost{background:#fff;color:var(--green-darker);border:1px solid var(--green);}

/* Simulated terminal */
.terminal{
  background:#0c0c0c;color:#e5e5e5;font-family:"Consolas","Courier New",monospace;
  font-size:14px;border-radius:6px;overflow:hidden;margin:14px 0;border:1px solid #333;
}
.terminal .bar{background:#2d2d2d;padding:6px 10px;display:flex;gap:6px;align-items:center;}
.terminal .dot{width:12px;height:12px;border-radius:50%;display:inline-block;}
.terminal .dot.r{background:#ff5f56;}.terminal .dot.y{background:#ffbd2e;}.terminal .dot.g{background:#27c93f;}
.terminal .bar .ttitle{color:#aaa;font-size:12px;margin-left:8px;}
.terminal .screen{padding:12px 14px;min-height:60px;white-space:pre-wrap;line-height:1.5;}
.terminal .screen .out{color:#c8c8c8;}
.terminal .screen .grn{color:#27c93f;}
.terminal .inputline{display:flex;padding:0 14px 12px;}
.terminal .inputline .ps{color:#27c93f;margin-right:8px;white-space:nowrap;}
.terminal .inputline input{
  flex:1;background:transparent;border:none;color:#fff;font-family:inherit;font-size:14px;outline:none;
}

/* ---------- Exercise blocks ---------- */
.exercise{border:1px solid var(--line);border-radius:6px;margin:20px 0;overflow:hidden;}
.exercise .head{background:var(--green);color:#fff;padding:10px 16px;font-weight:bold;}
.exercise .body{padding:14px 16px;}
.exercise ol{margin-left:20px;}
.step-result{background:#f7f7f7;border-left:4px solid #bbb;padding:8px 12px;margin:8px 0;font-size:13.5px;color:#333;}

/* ---------- Quiz ---------- */
.quiz{border:1px solid var(--line);border-radius:6px;padding:16px;margin:20px 0;background:#fafafa;}
.quiz .q{font-weight:bold;margin-bottom:8px;}
.quiz .opt{display:block;background:#fff;border:1px solid #ccc;border-radius:4px;padding:9px 12px;margin:6px 0;cursor:pointer;}
.quiz .opt:hover{border-color:var(--green);}
.quiz .opt.correct{background:#ddffdd;border-color:var(--green);}
.quiz .opt.wrong{background:#ffdddd;border-color:#f44336;}
.quiz .explain{margin-top:10px;font-size:14px;color:#333;display:none;}

/* ---------- Takeaways ---------- */
.takeaways{background:#E9EFFC;border-radius:6px;padding:16px 20px;margin:22px 0;}
.takeaways h3{margin-top:0;color:var(--green-darker);}

/* ---------- Pager ---------- */
.pager{display:flex;justify-content:space-between;margin:36px 0 10px;gap:10px;flex-wrap:wrap;}
.pager a{
  background:var(--green);color:#fff;text-decoration:none;padding:10px 18px;border-radius:5px;font-weight:bold;font-size:14px;
}
.pager a.prev{background:#6c757d;}
.pager a:hover{opacity:.9;}

/* ---------- Cards on home page ---------- */
.hero{background:var(--sidebar);color:#fff;padding:44px 40px;border-radius:8px;margin-bottom:26px;}
.hero h1{color:#fff;margin-top:0;}
.hero p{color:#d6d6d6;max-width:640px;}
.hero .badge{display:inline-block;background:var(--green);color:#fff;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:bold;margin-bottom:14px;}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:20px 0;}
.card{border:1px solid var(--line);border-radius:8px;padding:18px;transition:box-shadow .15s;background:#fff;}
.card:hover{box-shadow:0 4px 14px rgba(0,0,0,.08);}
.card .num{color:var(--green);font-weight:bold;font-size:13px;}
.card h3{margin:6px 0;font-size:17px;}
.card p{font-size:13.5px;color:var(--muted);margin:6px 0 12px;}
.card a{font-weight:bold;text-decoration:none;font-size:14px;}
.status{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:bold;}
.status.ready{background:#ddffdd;color:#1D4FC4;}
.status.soon{background:#eee;color:#777;}

footer.site{border-top:1px solid var(--line);padding:20px 0;margin-top:40px;color:var(--muted);font-size:13px;}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:6px;}
.crumbs a{text-decoration:none;}