/* =========================================================
   Speak Thai Today — main website theme
   Used by: index.html (home) + every episodes/epXX/index.html
   Change colors here once -> the whole website updates.
   ========================================================= */
:root{--navy:#1C355E;--red:#C81E32;--yel:#FDD835;--mint:#E6F0EC;--ink:#222;--green:#2E9E5B;--muted:#5F6B7A;--card:#fff;--radius:22px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Poppins,Kanit,system-ui,sans-serif;color:var(--ink);background:var(--mint);line-height:1.6}
.th{font-family:Kanit,sans-serif}
a{color:inherit}
img{max-width:100%;height:auto}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* ---------- Nav ---------- */
nav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:2px solid var(--ink)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;text-decoration:none;color:var(--navy)}
.logo b{background:var(--yel);border:2.5px solid var(--ink);border-radius:999px;padding:4px 12px;font-size:14px;color:var(--ink)}
nav .links{display:flex;gap:18px;align-items:center;font-weight:600;font-size:15px}
nav .links a{text-decoration:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;text-decoration:none;border:3px solid var(--ink);border-radius:999px;padding:12px 24px;box-shadow:4px 4px 0 var(--ink);transition:transform .12s,box-shadow .12s;cursor:pointer;font-family:inherit;font-size:16px}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn-red{background:var(--red);color:#fff}.btn-yel{background:var(--yel);color:var(--ink)}.btn-white{background:#fff;color:var(--ink)}
.btn-sm{padding:8px 16px;font-size:14px;box-shadow:3px 3px 0 var(--ink)}

/* ---------- Hero ---------- */
header.hero{padding:56px 0 40px}
.hero .grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:14px}.crumbs a{text-decoration:none}
.pill{display:inline-block;background:var(--red);color:#fff;font-weight:700;font-size:13px;letter-spacing:.06em;border:2.5px solid var(--ink);border-radius:999px;padding:4px 14px}
h1{font-size:clamp(32px,4.6vw,52px);line-height:1.08;margin:14px 0 14px;color:var(--navy);font-weight:800}
h1 em{font-style:normal;color:var(--red)}
.lead{font-size:18px;color:#3a4350;margin:0 0 26px}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:22px;font-size:14px;color:var(--muted);font-weight:600}
.video{position:relative;border:3px solid var(--ink);border-radius:var(--radius);overflow:hidden;box-shadow:8px 8px 0 var(--ink);background:#000;aspect-ratio:16/9}
.video img,.video iframe{width:100%;height:100%;display:block;object-fit:cover;border:0}
.video .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-decoration:none}
.video .play span{width:84px;height:84px;border-radius:50%;background:var(--red);border:3px solid #fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(0,0,0,.35)}
.video .play span:after{content:"";border-left:26px solid #fff;border-top:16px solid transparent;border-bottom:16px solid transparent;margin-left:6px}

/* ---------- Sections ---------- */
section{padding:48px 0}
h2{font-size:clamp(26px,3.2vw,36px);color:var(--navy);margin:0 0 8px;font-weight:800}
.sub{color:var(--muted);margin:0 0 28px}

/* ---------- Phrase / question cards ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:var(--card);border:3px solid var(--ink);border-radius:var(--radius);padding:24px 24px 20px;box-shadow:5px 5px 0 var(--ink)}
.num{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;background:var(--yel);border:2.5px solid var(--ink);border-radius:12px;font-weight:800;margin-right:10px;flex:none}
.q{font-family:Kanit;font-weight:700;color:var(--red);font-size:34px;line-height:1.2;margin:14px 0 2px}
.rom{color:var(--navy);font-weight:600}
.mean{color:var(--muted);margin:4px 0 14px}
.ans{display:flex;gap:10px;flex-wrap:wrap;border-top:2px dashed #ccc;padding-top:14px}
.tag{border-radius:14px;padding:6px 12px;font-size:15px;border:2px solid var(--ink);font-family:Kanit}
.yes{background:#E1F5E4}.no{background:#FCE4E6}.use{background:#FFF6C7}
.tag b{font-family:Poppins;font-size:12px;margin-right:6px}
.time{float:right;font-size:13px;font-weight:700;color:var(--muted);background:var(--mint);border:2px solid var(--ink);border-radius:999px;padding:2px 10px;text-decoration:none}

/* ---------- Formula / tip ---------- */
.formula{background:var(--yel);border:3px solid var(--ink);border-radius:var(--radius);padding:26px;box-shadow:5px 5px 0 var(--ink);display:grid;gap:14px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-weight:700;font-size:20px}
.chip{background:#fff;border:2.5px solid var(--ink);border-radius:12px;padding:4px 14px;font-family:Kanit}
.lab{color:#fff;border-radius:12px;padding:4px 14px;border:2.5px solid var(--ink)}
.tip{background:#fff;border:3px solid var(--ink);border-left:12px solid var(--red);border-radius:16px;padding:16px 20px;margin-top:22px}

/* ---------- Worksheet block ---------- */
.ws{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;background:#fff;border:3px solid var(--ink);border-radius:28px;padding:34px;box-shadow:8px 8px 0 var(--ink)}
.ws img{width:100%;border:3px solid var(--ink);border-radius:10px;box-shadow:6px 6px 0 rgba(0,0,0,.15);transform:rotate(-2deg);background:#fff}
.ws ul{padding-left:20px;margin:14px 0 24px}.ws li{margin:6px 0}
.ws.ws-compact{grid-template-columns:minmax(0,340px) 1fr;justify-content:center}
.ws.ws-compact img{max-width:340px;justify-self:center}
.free{display:inline-block;background:var(--green);color:#fff;font-weight:800;border-radius:10px;padding:2px 10px;font-size:14px}

/* ---------- Quiz / transcript (details) ---------- */
details{background:#fff;border:3px solid var(--ink);border-radius:16px;padding:14px 18px;margin:12px 0;box-shadow:4px 4px 0 var(--ink)}
summary{cursor:pointer;font-weight:700;font-size:18px}
details p{margin:10px 0 0}
.script p{margin:10px 0 0}
.script .say{font-family:Kanit;font-weight:700;color:var(--red)}

/* ---------- Subscribe block ---------- */
.sublock{background:var(--navy);color:#fff;border-radius:28px;padding:40px;display:flex;justify-content:space-between;align-items:center;gap:24px;border:3px solid var(--ink)}
.sublock h2{color:#fff}

/* ---------- More lessons (episode pages) ---------- */
.eps{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.ep{display:flex;gap:14px;align-items:center;background:#fff;border:3px solid var(--ink);border-radius:18px;padding:14px;text-decoration:none;box-shadow:4px 4px 0 var(--ink)}
.ep small{color:var(--muted);font-weight:600}

/* ---------- Home: lesson cards ---------- */
.lessons{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.lesson{display:flex;flex-direction:column;background:#fff;border:3px solid var(--ink);border-radius:var(--radius);overflow:hidden;box-shadow:5px 5px 0 var(--ink);text-decoration:none;transition:transform .12s,box-shadow .12s}
a.lesson:hover{transform:translate(-3px,-3px);box-shadow:8px 8px 0 var(--ink)}
.lesson .thumb{aspect-ratio:16/9;border-bottom:3px solid var(--ink);background:var(--navy);display:flex;align-items:center;justify-content:center;font-size:56px}
.lesson .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.lesson .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.lesson .ep-no{display:inline-block;align-self:flex-start;background:var(--yel);border:2.5px solid var(--ink);border-radius:999px;padding:1px 12px;font-weight:800;font-size:13px}
.lesson h3{margin:0;font-size:20px;line-height:1.25;color:var(--navy)}
.lesson p{margin:0;color:var(--muted);font-size:15px}
.lesson .info{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;font-weight:600;color:var(--muted);margin-top:auto;padding-top:8px}
.lesson .go{font-weight:800;color:var(--red)}
.lesson.soon{opacity:.8;box-shadow:5px 5px 0 rgba(0,0,0,.25)}
.lesson.soon .thumb{background:repeating-linear-gradient(45deg,var(--yel),var(--yel) 14px,#ffe982 14px,#ffe982 28px)}

/* ---------- Home: features ---------- */
.feats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feat{background:#fff;border:3px solid var(--ink);border-radius:18px;padding:20px;box-shadow:4px 4px 0 var(--ink)}
.feat .ico{font-size:30px;line-height:1}
.feat h3{margin:10px 0 4px;color:var(--navy);font-size:18px}
.feat p{margin:0;color:var(--muted);font-size:15px}
.hello{font-family:Kanit;font-weight:800;color:var(--red)}
.stack{position:relative}
.stack .video+.video{position:absolute;width:62%;right:-14px;bottom:-30px;transform:rotate(3deg)}

/* ---------- Footer ---------- */
footer{padding:36px 0;color:var(--muted);font-size:14px;text-align:center}
footer .flinks{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:10px;font-weight:600}
footer .flinks a{text-decoration:none;color:var(--navy)}

/* ---------- Mobile ---------- */
@media (max-width:960px){.lessons{grid-template-columns:1fr 1fr}.feats{grid-template-columns:1fr 1fr}}
@media (max-width:860px){.hero .grid,.ws,.ws.ws-compact,.eps{grid-template-columns:1fr}.cards{grid-template-columns:1fr}.sublock{flex-direction:column;text-align:center}nav .links a.hide-m{display:none}.stack .video+.video{display:none}}
@media (max-width:600px){.lessons,.feats{grid-template-columns:1fr}}