/* tutorials.css — the Excel tutorials page (/excel).
   Loaded after site.css and built from its tokens only, so the page follows the
   night / daylight grounds, the light scheme, and the single-coral rule without
   a colour of its own. Coral appears once: "Start lesson 1". */

/* ---------- Intro ---------- */
.tut-intro{padding-block:clamp(2.5rem,6vw,4.5rem) clamp(2.5rem,5vw,4rem);overflow:hidden}
.tut-intro-grid{display:grid;gap:2.5rem;align-items:start}
@media (min-width:1000px){.tut-intro-grid{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:4rem}}
.tut-crumb{font-family:var(--font-label);font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-2);margin:0 0 1.6rem}
.tut-crumb a{color:var(--gold-text);text-decoration:none;display:inline-block;padding-block:.7rem}
.tut-crumb a:hover{text-decoration:underline}
.tut-crumb span[aria-hidden]{margin-inline:.5rem;opacity:.6}
.tut-intro .eyebrow{color:var(--gold-text)}
.tut-intro h1{font-size:clamp(2.2rem,1.7rem + 2.6vw,4rem);margin-block-end:1.2rem}
.tut-lead{font-size:clamp(1.1rem,1rem + .4vw,1.3rem);color:var(--fg-2);max-inline-size:60ch;margin:0 0 1.8rem}
.tut-facts{list-style:none;padding:0;margin:0 0 2rem;display:flex;flex-wrap:wrap;gap:1rem 2.4rem}
.tut-facts li{display:flex;align-items:baseline;gap:.6rem;font-family:var(--font-label);font-size:.74rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-2)}
.tut-facts .num{font-size:1.7rem;font-weight:600;color:var(--gold-text);letter-spacing:0;line-height:1}
.tut-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin:0}
.tut-progress{font-family:var(--font-label);font-size:.76rem;letter-spacing:.08em;color:var(--fg-2);margin:1.2rem 0 0}
.tut-progress[hidden]{display:none}
.tut-progress button{font:inherit;color:var(--gold-text);background:none;border:0;padding:.6rem .2rem;margin-inline-start:.4rem;text-decoration:underline;cursor:pointer}

.tut-toc{border:1px solid var(--line);border-block-start:1px solid var(--line-gold);border-radius:var(--radius);padding:1.4rem 1.5rem 1.2rem;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 var(--glass-edge)}
.tut-toc h2{font-family:var(--font-label);font-size:.74rem;letter-spacing:.18em;margin:0}
.tut-toc ol{list-style:none;margin:.8rem 0 1rem;padding:0;display:grid}
.tut-toc a{display:grid;grid-template-columns:2.4rem minmax(0,1fr) auto;align-items:baseline;gap:.6rem;padding:.85rem .2rem;min-block-size:44px;text-decoration:none;color:var(--fg);border-block-end:1px solid var(--line)}
.tut-toc li:last-child a{border-block-end:0}
.tut-toc .num{color:var(--gold-text);font-weight:600;font-size:.9rem}
.tut-toc .toc-title{font-family:var(--font-display);font-weight:700;font-size:1.12rem;line-height:1.25}
.tut-toc a:hover .toc-title,.tut-toc a:focus-visible .toc-title{color:var(--gold-text)}
.tut-toc a[data-watched="true"] .mono::after{content:" \2713";color:var(--gold-text)}
.tut-toc .fine{font-size:.88rem;color:var(--fg-2);margin:0}

/* ---------- Lessons ---------- */
.lessons{display:grid;gap:2.5rem}
.lesson{display:grid;gap:1.5rem;border:1px solid var(--line);border-block-start:1px solid var(--line-gold);border-radius:var(--radius);padding:1.1rem;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 var(--glass-edge);scroll-margin-block-start:6rem}
@media (min-width:1000px){.lesson{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:2.2rem;padding:1.6rem;align-items:start}}
.lesson-media{border-radius:calc(var(--radius) - 4px);overflow:hidden;background:var(--black);border:1px solid var(--line-gold);box-shadow:0 30px 70px -40px rgba(5,2,16,.9),0 0 60px -30px rgba(131,98,237,.5)}
@media (min-width:1000px){.lesson-media{position:sticky;inset-block-start:5.5rem}}
.lesson-media video{display:block;inline-size:100%;block-size:auto;aspect-ratio:16/9;background:var(--black)}
.lesson-media a{color:var(--ivory)}

.lesson-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;margin:0 0 .7rem;font-family:var(--font-label);font-size:.72rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-2)}
.lesson-meta .num{font-family:var(--font-label);color:var(--gold-text)}
.lesson-meta .mono{letter-spacing:.04em}
.lesson-done{border:1px solid var(--line-gold);color:var(--gold-text);border-radius:999px;padding:.15rem .6rem;font-size:.64rem}
.lesson-done[hidden]{display:none}
.lesson h3{margin-block-end:.7rem}
.lesson-summary{color:var(--fg-2);margin:0 0 1.1rem}
.lesson-steps{margin:0 0 1.1rem;padding-inline-start:1.4rem;display:grid;gap:.55rem}
.lesson-steps li{padding-inline-start:.3rem}
.lesson-steps li::marker{color:var(--gold-text);font-family:var(--font-mono);font-size:.85em;font-weight:600}
.lesson-example{font-size:.98rem;color:var(--fg-2);border:1px dashed var(--line);border-radius:calc(var(--radius) - 6px);padding:.8rem 1rem;margin:0 0 1.1rem}
.lesson-takeaway{border-inline-start:3px solid var(--gold);padding:.15rem 0 .15rem 1rem;margin:0 0 1.1rem;color:var(--fg)}
.lesson-takeaway .label{display:block;font-size:.66rem;margin-block-end:.2rem;color:var(--gold-text)}
.lesson-skills{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0 0 1.1rem}
.lesson-skills li{font-family:var(--font-label);font-size:.66rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--line);border-radius:999px;padding:.3rem .7rem;color:var(--fg-2)}

.lesson-more{border-block-start:1px solid var(--line)}
.lesson-more summary{cursor:pointer;min-block-size:44px;display:flex;align-items:center;gap:.6rem;font-family:var(--font-label);font-size:.76rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--fg);list-style:none}
.lesson-more summary::-webkit-details-marker{display:none}
.lesson-more summary::before{content:"+";font-family:var(--font-mono);color:var(--gold-text);inline-size:1rem;text-align:center}
.lesson-more[open] summary::before{content:"\2212"}
.lesson-more[open] summary{color:var(--gold-text)}
.lesson-more p{color:var(--fg-2);font-size:1rem;margin:0 0 .9rem}
.lesson-more .fine{font-size:.86rem}
.practice{display:grid;gap:1.2rem;margin-block:.2rem 1rem}
@media (min-width:1300px){.practice{grid-template-columns:1fr 1fr}}
.practice table{border-collapse:collapse;inline-size:100%;font-size:.92rem}
.practice caption{text-align:start;font-family:var(--font-label);font-size:.66rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-text);padding-block-end:.4rem}
.practice th{text-align:start;font-weight:400;padding:.32rem .6rem .32rem 0;color:var(--fg-2)}
.practice td{text-align:end;padding:.32rem 0;color:var(--fg);white-space:nowrap}
.practice tr{border-block-end:1px solid var(--line)}
.practice .total{border-block-end:0}
.practice .total th,.practice .total td{font-weight:600;color:var(--fg)}
.lesson-next{margin:1.2rem 0 0}

.tut-note{font-size:.92rem;color:var(--fg-2);max-inline-size:70ch;margin:2rem 0 0;padding-block-start:1.2rem;border-block-start:1px solid var(--line)}

/* ---------- Follow along (daylight band) ---------- */
.tut-how{max-inline-size:1000px}
.tut-how + .teach-cta{max-inline-size:1000px}

@media (prefers-reduced-motion:reduce){.lesson,.tut-toc{transition:none}}