/* ============================================================
   Information Security course: mock-ups and slide layouts.
   Engine, theme, mascot and shared layouts live in assets/css
   (course.css: cards, notes, tables, howto, road, tl; quiz.css: quiz).
   Everything here is theme-aware unless it imitates a screen
   (emails, phones, terminals stay light/dark like a screenshot).
   ============================================================ */
:root{--sec:#d7263d;--sec-deep:#a3122a}
.t-sec{color:var(--sec)} .kicker.k-sec{color:var(--sec);background:color-mix(in srgb,var(--sec) 14%,transparent)}
.cardx.sec{--c:var(--sec)} .tone-sec{--c:var(--sec);--cd:var(--sec-deep)}
.btn-sec{background:var(--sec);color:#fff;box-shadow:0 8px 20px color-mix(in srgb,var(--sec) 35%,transparent)} .btn-sec:hover{background:var(--sec-deep)}

/* ---------- layouts ---------- */
.is-demo{flex:1;min-height:0;display:grid;grid-template-columns:1fr 420px;gap:26px;align-items:start;margin-top:14px}
.is-demo.rev{grid-template-columns:420px 1fr} .is-demo.n{grid-template-columns:1fr 360px} .is-demo.w{grid-template-columns:1fr 520px}
.is-demo.rev.w{grid-template-columns:520px 1fr}
.is-demo > .howto{margin-top:0}

/* ---------- quiz: ten questions in a 5 × 2 grid ---------- */
[data-quiz] .quiz-head .slide-title{font-size:46px;white-space:nowrap}
.quiz.cols-5{grid-template-columns:repeat(5,1fr);gap:10px;margin-top:10px}
.quiz.cols-5 .q{display:flex;flex-direction:column;align-items:stretch;padding:12px 11px 12px;text-align:left}
.quiz.cols-5 .q-tag{font-size:10.5px;margin-bottom:2px}
.quiz.cols-5 .q-text{font-size:16px;line-height:1.2;min-height:52px;font-weight:700}
.quiz.cols-5 .opts{flex-direction:column;align-items:stretch;gap:6px;margin-top:8px}
.quiz.cols-5 .opts button{font-size:13.5px;min-width:0;padding:6px 9px;border-width:2px;border-radius:12px;line-height:1.2;text-align:left;font-weight:700}
.quiz.cols-5 .opts button:hover:not(:disabled){transform:none}

/* ---------- e-mail mock-up (always light, like a screenshot) ---------- */
.mail{background:#fff;color:#1f1f27;border:1px solid #d9d9e0;border-radius:14px;box-shadow:0 10px 30px rgba(29,39,66,.14);font-family:"Segoe UI",system-ui,-apple-system,sans-serif;font-weight:400;font-size:15px;line-height:1.4;overflow:hidden;text-align:left}
.mail-top{display:flex;align-items:center;gap:8px;padding:8px 14px;background:#f3f3f6;border-bottom:1px solid #e3e3e9;font-size:12px;color:#6b6b78}
.mail-top i{width:9px;height:9px;border-radius:50%;background:#ff5f57;box-shadow:14px 0 0 #febc2e,28px 0 0 #28c840;margin-right:28px}
.mail-h{padding:10px 16px;border-bottom:1px solid #ececf1;display:grid;grid-template-columns:auto 1fr;gap:2px 10px;font-size:13.5px;align-items:baseline}
.mail-h span{color:#6b6b78} .mail-h b{font-weight:600;color:#1f1f27;min-width:0}
.mail-h .subj{font-size:16.5px;font-weight:700;grid-column:1/-1;margin-top:4px;white-space:normal}
.mail-b{padding:12px 16px 14px}
.mail-b p{margin:0 0 8px;color:#1f1f27} .mail-b p:last-child{margin-bottom:0} .mail-b b{color:#1f1f27}
.mail-btn{display:inline-block;background:#1a73e8;color:#fff;font-weight:700;padding:8px 18px;border-radius:6px;margin:4px 0;text-decoration:none}
.mail-btn.red{background:#d93025}
.mail-btn.flag{background:#1a73e8;color:#fff} .mail-btn.red.flag{background:#d93025}
.mail .link,.sms .link{color:#1a0dab;text-decoration:underline;word-break:break-all}
.mail .att{display:inline-flex;align-items:center;gap:8px;border:1px solid #d9d9e0;border-radius:8px;padding:6px 10px;font-size:13px;background:#fafafc;margin-top:4px}
.mail .att i{font-style:normal;width:22px;height:22px;border-radius:5px;background:#d93025;color:#fff;font-size:9px;font-weight:800;display:grid;place-items:center}
.mail.sm{font-size:13.5px} .mail.sm .mail-b{padding:10px 14px} .mail.sm .mail-h{padding:8px 14px;font-size:12.5px} .mail.sm .mail-h .subj{font-size:15px}
.mail .sig{color:#6b6b78;font-size:.9em}
/* numbered red flags: the text is always visible, the ring appears on its step */
.flag{position:relative;border-radius:4px;outline:2.5px solid var(--sec);outline-offset:2px;background:color-mix(in srgb,var(--sec) 12%,transparent);transition:outline-color .3s,background .3s}
.flag::after{content:attr(data-n);position:absolute;top:-15px;right:-13px;width:22px;height:22px;border-radius:50%;background:var(--sec);color:#fff;font:800 12px/22px var(--display);text-align:center;box-shadow:0 2px 6px rgba(0,0,0,.25);z-index:2}
.slide .flag[data-step]{transition:outline-color .3s,background .3s;transform:none!important;opacity:1!important;pointer-events:auto!important}
.slide .flag[data-step]:not(.is-shown){outline-color:transparent;background:transparent}
.slide .flag[data-step]:not(.is-shown)::after{display:none}
.flag.ok{outline-color:var(--mint);background:color-mix(in srgb,var(--mint) 14%,transparent)} .flag.ok::after{background:var(--mint)}

/* ---------- phone mock-up ---------- */
.phone{width:250px;flex:none;background:#111;border-radius:30px;padding:10px;box-shadow:0 14px 34px rgba(0,0,0,.28);text-align:left}
.phone.sm{width:220px;border-radius:26px;padding:8px}
.phone .scr{background:#fff;color:#1f1f27;border-radius:22px;overflow:hidden;min-height:380px;display:flex;flex-direction:column;font-family:"Segoe UI",system-ui,-apple-system,sans-serif;font-weight:400;font-size:13.5px;line-height:1.35;position:relative}
.phone.sm .scr{min-height:330px;font-size:12.5px}
.phone .bar{display:flex;justify-content:space-between;padding:6px 14px 0;font-size:11px;font-weight:700;color:#444}
.phone .hd{padding:6px 12px 8px;border-bottom:1px solid #e9e9ee;font-weight:700;display:flex;align-items:center;gap:8px;color:#1f1f27}
.phone .hd i{width:28px;height:28px;border-radius:50%;background:#dfe3ea;display:grid;place-items:center;font-style:normal;font-size:12px;color:#1f1f27}
.phone .hd small{display:block;font-weight:400;font-size:10.5px;color:#6b6b78}
.sms{display:flex;flex-direction:column;gap:6px;padding:10px}
.sms > div{max-width:90%;padding:7px 10px;border-radius:14px;background:#efeff4;align-self:flex-start;border-bottom-left-radius:4px;color:#1f1f27}
.sms > div.me{background:#d6ebff;align-self:flex-end;border-radius:14px;border-bottom-right-radius:4px}
.sms > .time{align-self:center;font-size:10.5px;color:#888;background:none;padding:0}
.sms .wa{background:#dcf8c6}
.phone .notif{margin:8px 10px 0;background:#fff;border:1px solid #e3e3e9;border-radius:12px;padding:8px 10px;box-shadow:0 4px 12px rgba(0,0,0,.08);font-size:12.5px;color:#1f1f27}
.phone .notif b{display:block;font-size:12px}
.phone .notif small{display:block;color:#6b6b78;font-size:10.5px}
/* incoming call screen */
.call{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:linear-gradient(180deg,#1d2742,#0b1020);color:#fff;text-align:center;padding:20px 12px}
.call .av{width:64px;height:64px;border-radius:50%;background:#3b4a6b;display:grid;place-items:center;font-size:26px;margin-bottom:6px}
.call b{font-size:18px;color:#fff} .call span{font-size:12.5px;opacity:.75}
.call .btns{display:flex;gap:34px;margin-top:26px}
.call .btns i{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:22px;background:#e5484d;color:#fff} .call .btns i.ok{background:#30a46c}
.call .live{white-space:nowrap;position:absolute;top:34px;left:50%;transform:translateX(-50%);font-size:10.5px;font-weight:800;letter-spacing:.08em;background:rgba(229,72,77,.9);padding:2px 10px;border-radius:999px}
.phone.dark .scr{background:#000;color:#fff}
/* app store / permission sheet */
.sheet{margin-top:auto;background:#fff;border-radius:16px 16px 0 0;box-shadow:0 -6px 20px rgba(0,0,0,.15);padding:12px 14px;color:#1f1f27}
.sheet b{display:block;font-size:13.5px} .sheet p{font-size:12px;color:#6b6b78;margin:4px 0 8px}
.sheet .sb2{display:flex;gap:8px} .sheet .sb2 span{flex:1;text-align:center;padding:7px;border-radius:8px;font-weight:700;font-size:12.5px;background:#eef0f5} .sheet .sb2 span.pri{background:#1a73e8;color:#fff}

/* ---------- video call (deepfake) ---------- */
.vcall{background:#1b1b1f;border-radius:14px;padding:10px;display:grid;grid-template-columns:1fr 1fr;gap:8px;box-shadow:0 12px 30px rgba(0,0,0,.3)}
.vcall > div{position:relative;aspect-ratio:16/10;border-radius:10px;background:linear-gradient(135deg,#2f3a55,#1d2742);display:grid;place-items:center;color:#fff;font-size:36px;overflow:hidden}
.vcall > div:nth-child(2){background:linear-gradient(135deg,#4a3b63,#2a2240)} .vcall > div:nth-child(3){background:linear-gradient(135deg,#2d4f4a,#1b3330)} .vcall > div:nth-child(4){background:linear-gradient(135deg,#5a3d2e,#33231a)}
.vcall b{position:absolute;left:8px;bottom:6px;font-size:12px;background:rgba(0,0,0,.55);padding:2px 8px;border-radius:6px;font-weight:600;color:#fff}
.vcall .ai{position:absolute;top:6px;right:6px;font:800 11px/1 var(--display);letter-spacing:.04em;color:#fff;background:var(--sec);padding:4px 8px;border-radius:6px;font-style:normal}
.vcall .mic{position:absolute;right:6px;bottom:6px;width:20px;height:20px;border-radius:50%;background:#e5484d;font-size:11px;display:grid;place-items:center;font-style:normal}
.vcall .foot{grid-column:1/-1;aspect-ratio:auto;background:none;display:flex;justify-content:center;gap:12px;padding:4px 0 0}
.vcall .foot i{width:34px;height:34px;border-radius:50%;background:#33333a;display:grid;place-items:center;font-style:normal;font-size:15px} .vcall .foot i.end{background:#e5484d}

/* ---------- browser address bar ---------- */
.url{display:flex;align-items:center;gap:8px;background:#fff;color:#1f1f27;border:1px solid #d9d9e0;border-radius:999px;padding:8px 16px;font-family:"Segoe UI",system-ui,-apple-system,sans-serif;font-weight:400;font-size:16px;box-shadow:0 4px 14px rgba(29,39,66,.1);text-align:left;white-space:nowrap;overflow:hidden}
.url .lock{color:#188038;font-style:normal} .url .warn{color:#d93025;font-style:normal;font-weight:800}
.url .dom{font-weight:800;color:#1f1f27} .url .dim{color:#6b6b78}
.url.bad .dom{color:#d93025}
.urls{display:flex;flex-direction:column;gap:10px;margin-top:10px}

/* ---------- incident cards ---------- */
.inc{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
.inc.c2{grid-template-columns:1fr 1fr} .inc.c4{grid-template-columns:repeat(4,1fr);gap:12px}
.inc article{--c:var(--sec);position:relative;background:var(--surface);border:2px solid var(--line);border-left:7px solid var(--c);border-radius:16px;padding:12px 14px 12px 16px;text-align:left}
.inc .when{display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#fff;background:var(--c);padding:2px 10px;border-radius:var(--r-pill)}
.inc h3{font-size:20px;line-height:1.15;margin-top:6px}
.inc p{font-size:14.5px;line-height:1.3;margin-top:4px;color:var(--ink-soft)}
.inc .hit{display:block;margin-top:6px;font-family:var(--display);font-weight:700;font-size:15px;color:var(--c)}
.inc .lesson{display:block;margin-top:6px;font-size:13.5px;font-weight:700;color:var(--muted);line-height:1.3} .inc .lesson b{color:var(--ink)}
.inc .violet{--c:var(--violet)} .inc .brand{--c:var(--brand)} .inc .mint{--c:var(--mint)} .inc .cta{--c:var(--cta)} .inc .coral{--c:var(--coral)} .inc .sun{--c:#d99a00}
.inc.c4 h3{font-size:17.5px} .inc.c4 p{font-size:13.5px} .inc.c4 .lesson{font-size:12.5px}

/* ---------- big numbers ---------- */
.bigstats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:16px}
.bigstats.c2{grid-template-columns:1fr 1fr} .bigstats.c3{grid-template-columns:repeat(3,1fr)} .bigstats.c5{grid-template-columns:repeat(5,1fr);gap:10px}
.bigstats > div{--c:var(--sec);background:var(--surface);border:2px solid var(--line);border-bottom:6px solid var(--c);border-radius:18px;padding:14px 12px 12px;text-align:center}
.bigstats b{display:block;font-family:var(--display);font-size:38px;line-height:1;color:var(--c)}
.bigstats.c5 b{font-size:30px}
.bigstats span{display:block;font-size:14px;color:var(--ink-soft);font-weight:700;line-height:1.25;margin-top:6px}
.bigstats small{display:block;font-size:11.5px;color:var(--muted);margin-top:4px;line-height:1.25}
.bigstats .violet{--c:var(--violet)} .bigstats .brand{--c:var(--brand)} .bigstats .mint{--c:var(--mint)} .bigstats .cta{--c:var(--cta)} .bigstats .coral{--c:var(--coral)}

/* ---------- do / don't ---------- */
.dd{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:14px}
.dd > div{background:var(--surface);border:2px solid var(--line);border-radius:18px;padding:14px 16px;text-align:left}
.dd h3{font-size:20px;display:flex;align-items:center;gap:8px}
.dd h3 i{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:15px;color:#fff;background:var(--mint)}
.dd .dont h3 i{background:var(--sec)}
.dd ul{list-style:none;margin-top:8px;display:flex;flex-direction:column;gap:6px}
.dd li{position:relative;padding-left:26px;font-size:16px;line-height:1.3}
.dd li::before{content:"✓";position:absolute;left:0;top:0;font-weight:800;color:var(--mint)}
.dd .dont li::before{content:"✕";color:var(--sec)}
.dd.sm li{font-size:14.5px}

/* ---------- checklist that ticks itself ---------- */
.check{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;margin-top:12px}
.check.c1{grid-template-columns:1fr} .check.c3{grid-template-columns:repeat(3,1fr)}
.check li{position:relative;padding:8px 12px 8px 44px;background:var(--surface);border:2px solid var(--line);border-radius:12px;font-family:var(--display);font-weight:600;font-size:17px;line-height:1.25;text-align:left}
.check li small{display:block;font-family:var(--body);font-weight:600;font-size:13.5px;color:var(--muted);line-height:1.3}
.check li::before{content:"";position:absolute;left:12px;top:50%;width:20px;height:20px;margin-top:-10px;border-radius:6px;border:2.5px solid var(--line-2);background:var(--surface-2);box-sizing:border-box}
.check li.is-shown::before,.check li.on::before{content:"✓";color:#fff;background:var(--mint);border-color:var(--mint);font:800 14px/16px var(--display);text-align:center}
.check li.bad.is-shown::before,.check li.bad.on::before{content:"✕";background:var(--sec);border-color:var(--sec)}

/* ---------- terminal ---------- */
.term{background:#0d1117;color:#c9d1d9;border-radius:14px;padding:12px 16px;font-family:ui-monospace,Consolas,"Cascadia Code",Menlo,monospace;font-size:14.5px;line-height:1.5;box-shadow:0 12px 30px rgba(0,0,0,.3);text-align:left;overflow:hidden}
.term.sm{font-size:13px;line-height:1.45}
.term .ln{display:block;white-space:pre-wrap}
.term .p{color:#7ee787} .term .c{color:#8b949e} .term .r{color:#ff7b72} .term .y{color:#e3b341} .term .b{color:#79c0ff} .term .m{color:#d2a8ff}
.term .cur::after{content:"▌";animation:is-blink 1s steps(1) infinite} @keyframes is-blink{50%{opacity:0}}

/* ---------- antivirus / security app window ---------- */
.av{background:var(--surface);border:2px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);text-align:left;font-size:15px}
.av-top{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--surface-2);border-bottom:2px solid var(--line);font-family:var(--display);font-weight:700;font-size:17px}
.av-top i{width:28px;height:28px;border-radius:8px;background:var(--brand);display:grid;place-items:center;color:#fff;font-style:normal;font-size:15px}
.av-body{padding:14px 16px}
.av .bar{height:12px;border-radius:6px;background:var(--line);overflow:hidden;margin:8px 0}
.av .bar i{display:block;height:100%;width:var(--w,60%);background:linear-gradient(90deg,var(--brand),var(--mint));border-radius:6px;transition:width 1.2s ease}
.av .row{display:flex;justify-content:space-between;gap:10px;padding:6px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.av .row:last-child{border:0}
.av .ok{color:var(--mint-deep);font-weight:800} .av .bad{color:var(--sec);font-weight:800} .av .warnc{color:#d99a00;font-weight:800}
.av .shield{font-size:44px;line-height:1}
.av .big{display:flex;align-items:center;gap:14px} .av .big b{font-family:var(--display);font-size:22px;display:block;line-height:1.1} .av .big span{font-size:13.5px;color:var(--muted)}

/* ---------- hacker hats ---------- */
.hats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.hat{--c:#1d1d22;position:relative;background:var(--surface);border:2px solid var(--line);border-radius:18px;padding:18px 16px 14px;text-align:center}
.hat .ico{width:70px;height:38px;margin:0 auto 14px;border-radius:36px 36px 4px 4px;background:var(--c);position:relative;box-sizing:border-box}
.hat .ico::after{content:"";position:absolute;left:-16px;right:-16px;bottom:-7px;height:10px;border-radius:5px;background:var(--c)}
.hat.white{--c:#f7f7f9} .hat.white .ico,.hat.white .ico::after{border:2px solid #c3c3cc;box-sizing:border-box}
.hat.grey{--c:#8a8a96} .hat.black{--c:#1d1d22}
.hat h3{font-size:22px} .hat p{font-size:15px;line-height:1.3;margin-top:4px;color:var(--ink-soft)}
.hat .law{display:inline-block;margin-top:8px;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:2px 10px;border-radius:var(--r-pill);color:#fff;background:var(--mint)}
.hat.grey .law{background:#d99a00} .hat.black .law{background:var(--sec)}

/* ---------- timeline sizes (base .tl in course.css: 5 columns) ---------- */
.tl.c4{grid-template-columns:repeat(4,1fr)}
.tl.c6{grid-template-columns:repeat(6,1fr);gap:10px} .tl.c6 h3{font-size:18px} .tl.c6 p{font-size:13.5px}
.tl.c6 div{padding:14px 10px 12px}
.tl .yr.sec{background:var(--sec)}

/* ---------- CIA triangle layout ---------- */
.cia{display:grid;grid-template-columns:400px 1fr;gap:26px;align-items:center;margin-top:6px}
.cia svg{width:100%;height:auto;overflow:visible}
.cia .lbl{font-family:var(--display);font-weight:800;font-size:26px;fill:#fff}
.cia .def{display:flex;flex-direction:column;gap:12px}

/* ---------- sources ---------- */
.src{list-style:none;columns:2;column-gap:28px;margin-top:12px;font-size:13.5px;line-height:1.35}
.src li{break-inside:avoid;padding:4px 0 4px 14px;position:relative;color:var(--ink-soft)}
.src li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--sec)}
.src a{color:var(--brand);font-weight:700;text-decoration:none;word-break:break-all}
.src .d{color:var(--muted);font-weight:700}

/* ---------- title / end ---------- */
.title-art .mail,.title-art .phone{position:absolute;z-index:2}
.title-art .mail{left:0;top:50px;width:340px;transform:rotate(-4deg)}
.title-art .phone{left:40px;top:40px;transform:rotate(-6deg)}
.title-art .mavi-xl{z-index:3;margin-left:200px;margin-top:120px}
.author{margin-top:12px;font-size:17px;color:var(--ink-soft)} .author b{color:var(--ink)} .author a{color:var(--brand);font-weight:800;text-decoration:none}
.end-contact{margin-top:12px;font-size:18px;line-height:1.5} .end-contact a{color:var(--brand);font-weight:800;text-decoration:none}

/* ---------- helpers ---------- */
.shield-big{display:inline-grid;place-items:center;width:88px;height:96px;clip-path:polygon(50% 0,100% 16%,100% 55%,50% 100%,0 55%,0 16%);background:var(--c,var(--brand));color:#fff;font-size:40px;font-weight:800;font-family:var(--display)}
.pill{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#fff;background:var(--c,var(--sec));padding:2px 10px;border-radius:var(--r-pill);vertical-align:middle}
.help-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
.help-row div{flex:1;min-width:200px;display:flex;align-items:center;gap:12px;background:var(--surface);border:2px solid var(--line);border-radius:16px;padding:10px 14px;text-align:left}
.help-row i{flex:none;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:20px;color:#fff;background:var(--c,var(--sec))}
.help-row b{display:block;font-family:var(--display);font-size:22px;line-height:1.1} .help-row span{font-size:13.5px;color:var(--muted);font-weight:700;line-height:1.25}