/* AIMducate — Fundamentals of Graphic Design series page
   Palette from the approved series promo: teal #2E7D78, orange #C9652B, cream #F6F3ED. */
:root{
  --teal:#2E7D78; --teal-deep:#1f5f5b; --orange:#C9652B; --cream:#F6F3ED;
  --ink:#263238; --soft:#55625f;
  --serif:"Fraunces",Georgia,serif;
  --sans:"DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.5;color:var(--ink);background:var(--cream) url(img/tex-cream.jpg) center/720px;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,p,figure{margin:0}
a{color:inherit}
.serif{font-family:var(--serif);font-weight:600;line-height:1.15}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
a:focus-visible,button:focus-visible,.ep-card:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 14px;border-radius:8px;z-index:20}
.skip:focus{left:8px}

/* header */
.s-header{background:#fff;box-shadow:0 1px 0 rgba(38,50,56,.08);position:sticky;top:0;z-index:10}
.s-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.s-brand img{width:92px;height:auto}
.s-links{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.s-links a{text-decoration:none;font-weight:500;font-size:15px;padding:8px 10px;border-radius:8px;color:var(--ink)}
.s-links a:hover{background:#eef4f3}
.s-links a[aria-current]{color:var(--teal);font-weight:700}

/* hero: textured teal */
.hero{position:relative;background:var(--teal) url(img/tex-teal.jpg) center/720px;color:#fff;padding:48px 0 120px}
.hero-grid{display:grid;gap:36px;align-items:center}
.hero-logo{width:200px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.22));margin-bottom:18px}
.kicker{text-transform:uppercase;letter-spacing:.14em;font-weight:700;font-size:13px;color:#ffd9bf}
.hero h1{font-size:clamp(34px,6vw,58px);margin:6px 0 14px;color:#fff}
.lede{font-size:18px;max-width:34em;color:#eef6f5}
.btn{display:inline-block;margin-top:22px;background:var(--orange);color:#fff;text-decoration:none;font-weight:700;padding:13px 22px;border-radius:999px;box-shadow:0 4px 14px rgba(0,0,0,.18)}
.btn:hover{background:#b4571f}
.hero-promo{background:rgba(0,0,0,.12);border-radius:18px;padding:10px;box-shadow:0 18px 40px rgba(0,0,0,.25)}
.hero-promo video{width:100%;height:auto;aspect-ratio:1/1;border-radius:12px;background:#1f5f5b;display:block}
.hero-promo figcaption{font-size:13px;color:#e3efed;padding:8px 4px 0}
.hero-curve{position:absolute;left:0;right:0;bottom:-1px;width:100%;height:90px;display:block}

/* episodes */
.episodes{padding:28px 0 64px}
.episodes h2{font-size:clamp(28px,4vw,40px);color:var(--teal-deep)}
.ep-intro{color:var(--soft);margin:6px 0 26px}
.ep-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 16px}
.ep{display:flex;flex-direction:column;min-width:0}
.ep-card{display:block;width:100%;padding:0;border:0;background:none;cursor:pointer;border-radius:16px;text-align:left;font:inherit;color:inherit}
.ep-cover{position:relative;display:block;aspect-ratio:9/16;border-radius:16px;overflow:hidden;background:#d9d4cb;box-shadow:0 10px 24px rgba(38,50,56,.18);border:4px solid var(--teal);transition:transform .25s ease,box-shadow .25s ease}
.ep-cover img{width:100%;height:100%;object-fit:cover}
button.ep-card:hover .ep-cover{transform:translateY(-4px);box-shadow:0 16px 30px rgba(38,50,56,.24)}
.ep-play{position:absolute;left:50%;top:80%;transform:translate(-50%,-50%);color:var(--orange);opacity:.92;filter:drop-shadow(0 3px 8px rgba(0,0,0,.35));transition:transform .2s ease}
.ep-play svg{width:58px;height:58px;display:block}
button.ep-card:hover .ep-play{transform:translate(-50%,-50%) scale(1.08)}
.ep-dur{position:absolute;right:8px;bottom:8px;background:rgba(20,40,38,.78);color:#fff;font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px}
.is-soon .ep-cover{border-color:#b9b2a6}
.is-soon .ep-cover img{filter:saturate(.55) brightness(.92)}
.ep-soon{position:absolute;left:50%;top:89%;transform:translate(-50%,-50%);background:var(--teal);color:#fff;font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;padding:8px 14px;border-radius:999px;white-space:nowrap;box-shadow:0 4px 12px rgba(0,0,0,.25)}
.ep-num{margin-top:12px;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--orange)}
.ep-title{font-size:20px;margin-top:2px;color:var(--ink)}
.ep-desc{font-size:14px;color:var(--soft);margin-top:4px}

/* contact: textured orange */
.contact{background:var(--orange) url(img/tex-orange.jpg) center/720px;color:#fff;padding:48px 0}
.contact-inner{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.contact-logo{width:170px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.25))}
.contact h2{font-size:clamp(26px,4vw,36px)}
.contact-desc{margin-top:6px;color:#fff3ea;max-width:36em}
.contact-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}
.contact-links a{background:#fff;color:var(--teal-deep);text-decoration:none;font-weight:700;padding:11px 18px;border-radius:999px}
.contact-links a:hover{background:var(--cream)}
.s-footer{background:var(--teal-deep);color:#dbe9e7;font-size:14px;padding:18px 0}

/* player dialog */
.player{border:0;padding:0;background:#10201f;color:#fff;border-radius:18px;width:min(92vw,460px);max-height:96vh;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.player::backdrop{background:rgba(12,28,27,.82)}
.player-bar,.player-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px}
.player-title{font-family:var(--sans);font-size:15px;font-weight:700;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.player-stage{background:#000}
.player-stage video{display:block;width:100%;height:auto;max-height:calc(96vh - 120px);aspect-ratio:9/16;margin:0 auto;background:#000}
.pbtn{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:999px;padding:9px 14px;font:inherit;font-size:14px;font-weight:700;cursor:pointer;min-height:40px}
.pbtn:hover{background:rgba(255,255,255,.22)}
.pbtn[disabled]{opacity:.35;cursor:default}
#player-close{background:var(--orange)}

@media (min-width:700px){
  .ep-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:34px 22px}
  .contact-inner{flex-direction:row;align-items:center;gap:36px}
}
@media (min-width:980px){
  .hero{padding:64px 0 140px}
  .hero-grid{grid-template-columns:1.1fr .9fr;gap:56px}
  .ep-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .s-brand img{width:110px}
}
@media (max-width:420px){
  .s-links a{padding:6px 7px;font-size:14px}
  .s-links a[href="../#services"],.s-links a[href="../#about"]{display:none}
  .hero{padding-top:32px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}