/* ============================================================
   PIYAMIT — modern theme (ใช้ร่วมกันหลายหน้า)
   ต้องโหลดหลัง bootstrap + style.css และมีฟอนต์ Kanit/Prompt
   ============================================================ */
:root{
    --brand-800:#1e40af; --brand-700:#1d4ed8; --brand-600:#2563eb;
    --sky:#0ea5e9; --accent:#f59e0b; --ink:#0f172a; --muted:#64748b;
    --bg:#f4f6fb; --card:#ffffff; --line:#e8ecf3;
}

body{ font-family:'Kanit',system-ui,-apple-system,sans-serif; background:var(--bg); color:#1f2937; }
h1,h2,h3,h4,h5,.display-1,.display-2,.display-3,.display-4,.display-5,.display-6{
    font-family:'Kanit',sans-serif; letter-spacing:.2px;
}

/* ---- ปรับสีแบรนด์ทั้งเว็บ (รวม navbar/footer) ---- */
.text-primary{color:var(--brand-700)!important;}
.bg-primary{background-color:var(--brand-700)!important;}
.border-primary{border-color:var(--brand-700)!important;}
.btn-primary{background:linear-gradient(135deg,var(--brand-700),var(--brand-600));border:none;box-shadow:0 8px 20px rgba(37,99,235,.28);font-weight:500;}
.btn-primary:hover{background:linear-gradient(135deg,var(--brand-800),var(--brand-700));}
.btn-outline-primary{color:var(--brand-700);border-color:var(--brand-700);font-weight:500;}
.btn-outline-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
a{color:var(--brand-700);} a:hover{color:var(--brand-800);}
.navbar .navbar-brand h1{font-family:'Kanit',sans-serif;letter-spacing:1px;}

/* ---- Page hero (หัวหน้าใน) ---- */
.page-hero{
    position:relative; overflow:hidden; color:#fff;
    background:linear-gradient(135deg,#1e3a8a 0%,#1d4ed8 55%,#0ea5e9 100%);
    border-radius:0 0 2rem 2rem; margin-top:120px; padding:3rem 0 2.6rem;
}
.page-hero::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;background:#38bdf8;opacity:.22;top:-140px;right:-100px;}
.page-hero .container{position:relative;z-index:2;}
.page-hero .eyebrow{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);padding:.35rem 1rem;border-radius:999px;font-size:.9rem;margin-bottom:.6rem;}
.page-hero h1{font-weight:700;font-size:clamp(1.5rem,3vw,2.2rem);margin:0;}
.page-hero .meta{opacity:.92;margin-top:.45rem;font-weight:500;}
@media(max-width:991px){ .page-hero{margin-top:90px;padding:2.2rem 0;} }

/* ---- Cards / bits ---- */
.m-card{background:var(--card);border:1px solid var(--line);border-radius:1.25rem;box-shadow:0 10px 30px rgba(15,23,42,.05);}
.eyebrow-blue{display:inline-block;color:var(--brand-700);font-weight:600;background:#e8efff;border-radius:999px;padding:.3rem 1rem;font-size:.85rem;}
.m-select{border-radius:.8rem;border:1px solid #dbe3f0;padding:.6rem .9rem;font-weight:500;}
.m-select:focus{border-color:var(--brand-600);box-shadow:0 0 0 .2rem rgba(37,99,235,.15);}

/* ---- Competition subject block ---- */
.subj-head{display:flex;align-items:center;flex-wrap:wrap;gap:.55rem;}
.subj-code{background:#eef2ff;color:var(--brand-700);font-weight:600;border-radius:8px;padding:.1rem .6rem;font-size:.9rem;}
.status-pill{display:inline-block;padding:.15rem .75rem;border-radius:999px;font-size:.8rem;font-weight:600;}
.pill-green{background:#dcfce7;color:#166534;}
.pill-gray{background:#f1f5f9;color:#475569;}

/* ---- Modern table ---- */
.m-table{width:100%;border-collapse:separate;border-spacing:0;}
.m-table thead th{background:#eef2f9;color:#334155;font-weight:600;font-size:.85rem;padding:.6rem .85rem;}
.m-table tbody td{padding:.55rem .85rem;border-top:1px solid #eef2f7;vertical-align:middle;}
.m-table tbody tr:hover td{background:#f8fafc;}
.rank-badge{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:#eef2ff;color:var(--brand-700);font-weight:600;font-size:.8rem;}

/* ---- reveal ---- */
.reveal{opacity:1;}