:root{
  --blue:#0d4e8c; --blue-dark:#093a68; --blue-light:#e8f1fb;
  --accent:#e0a52e; --ink:#1a2331; --muted:#5f6b7a; --line:#e3e8ef;
  --bg:#ffffff; --bg-alt:#f5f8fc; --ok:#1a7f4b; --err:#c0392b;
  --radius:14px; --shadow:0 6px 24px rgba(13,78,140,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
.container{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:720px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;color:var(--ink);margin:.2em 0 .5em}
h1{font-size:2.4rem}h2{font-size:1.8rem}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.center{text-align:center}
.lead{font-size:1.12rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:12px;padding-bottom:12px}
.brand{display:flex;flex-direction:column;line-height:1.05}
.brand:hover{text-decoration:none}
.brand-title{font-weight:800;font-size:1.15rem;color:var(--blue)}
.brand-sub{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:700}
.mainnav{display:flex;align-items:center;gap:1.4rem}
.mainnav a{color:var(--ink);font-weight:600;font-size:.98rem}
.mainnav a.active{color:var(--blue)}
.mainnav a:hover{text-decoration:none;color:var(--blue)}
.btn-nav{background:var(--blue);color:#fff!important;padding:.5rem 1.1rem;border-radius:999px}
.btn-nav:hover{background:var(--blue-dark)}
.navtoggle,.navburger{display:none}

/* Buttons */
.btn{display:inline-block;background:var(--blue);color:#fff!important;padding:.7rem 1.4rem;border-radius:999px;
  font-weight:700;border:none;cursor:pointer;font-size:1rem;transition:.15s}
.btn:hover{background:var(--blue-dark);text-decoration:none}
.btn-lg{padding:.95rem 2rem;font-size:1.08rem}
.btn-sm{padding:.5rem 1rem;font-size:.9rem}
.btn-ghost{background:transparent;color:var(--blue)!important;border:2px solid var(--blue)}
.btn-ghost:hover{background:var(--blue-light)}
.btn-disabled{background:#aab4c0;cursor:default}
.link-arrow{font-weight:700;white-space:nowrap}
.link-back{display:inline-block;margin-bottom:1rem;font-weight:600}

/* Hero */
.hero{background:linear-gradient(135deg,var(--blue-dark),var(--blue));color:#fff;padding:5rem 0 4.5rem;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;bottom:-80px;width:320px;height:320px;border-radius:50%;background:rgba(224,165,46,.16)}
.hero-inner{position:relative;z-index:1;max-width:760px}
.hero-kicker{text-transform:uppercase;letter-spacing:.16em;font-weight:700;color:#ffd98a;font-size:.85rem;margin:0 0 .8rem}
.hero h1{color:#fff;font-size:3.2rem;margin:0}
.hero h1 span{display:block;font-size:1.3rem;font-weight:600;letter-spacing:.25em;text-transform:uppercase;color:#cfe2f7;margin-top:.4rem}
.hero-tagline{font-size:1.25rem;color:#e4eefb;margin:1.2rem 0 2rem;max-width:620px}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero .btn-ghost{color:#fff!important;border-color:#fff}
.hero .btn-ghost:hover{background:rgba(255,255,255,.12)}
.hero-note{margin-top:1.6rem;color:#ffd98a;font-weight:600}

/* Sections */
.section{padding:4rem 0}
.section-alt{background:var(--bg-alt)}
.page-hero{background:var(--blue-light);padding:2.8rem 0;border-bottom:1px solid var(--line)}
.page-hero h1{margin:0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:1.6rem;flex-wrap:wrap}
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:2.5rem;align-items:start}

/* Cards */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;text-align:center;box-shadow:var(--shadow)}
.card-ico{font-size:2rem}
.card h3{margin:.4rem 0 .2rem}
.card-cats{text-align:center}
.cat-list{list-style:none;margin:.6rem auto 0;padding:0;text-align:left;display:inline-block}
.cat-list li{padding:.45rem .2rem;border-bottom:1px solid var(--line);font-size:.95rem;color:var(--ink)}
.cat-list li:last-child{border-bottom:none}
.route-box{background:var(--bg);border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow)}

/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.news-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow);display:flex;flex-direction:column}
.news-card time{font-size:.82rem}
.news-card h3{margin:.4rem 0 .5rem;font-size:1.15rem}
.news-card p{color:var(--muted);flex:1}
.article-body{font-size:1.08rem;margin-top:1rem}

/* Program / pills */
.program{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;font-size:1.08rem;box-shadow:var(--shadow)}
.pills{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1rem}
.pill{background:var(--blue-light);color:var(--blue);font-weight:700;padding:.5rem 1.1rem;border-radius:999px}

/* Registration form extras */
.form-sec{margin:1.8rem 0 .8rem;padding-bottom:.4rem;border-bottom:2px solid var(--blue-light);color:var(--blue)}
.participant{border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;margin-bottom:1rem;background:#fbfdff}
.participant-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:.8rem}
.btn-remove{background:transparent;border:1px solid var(--err);color:var(--err);border-radius:8px;padding:.25rem .6rem;cursor:pointer;font-size:.82rem}
.btn-remove:hover{background:var(--err);color:#fff}
#addBtn{margin:.2rem 0 1rem}
.age-hint{margin-top:.6rem;padding:.6rem .8rem;border-radius:8px;background:#fff8e6;border:1px solid #f0d488;color:#8a6d1f;font-size:.9rem}

/* Poll */
.poll-cta{background:var(--blue-light)}
.poll-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow);margin-bottom:1.4rem}
.poll-card h3{margin:0 0 1rem}
.radio{display:flex;gap:.6rem;align-items:flex-start;padding:.6rem .8rem;border:1px solid var(--line);border-radius:10px;margin-bottom:.5rem;cursor:pointer}
.radio:hover{border-color:var(--blue);background:var(--blue-light)}
.radio input{margin-top:.2rem}
.bar-row{margin-bottom:1rem}
.bar-label{display:flex;justify-content:space-between;margin-bottom:.3rem;font-weight:600;font-size:.95rem}
.bar-pct{color:var(--blue)}
.bar{background:#eef2f7;border-radius:999px;height:14px;overflow:hidden}
.bar-fill{height:100%;background:var(--blue);border-radius:999px;transition:width .5s}
.bar-fill.alt{background:var(--accent)}

/* Χορηγοί / Συνδιοργανωτές */
.sponsors-grid{display:flex;flex-wrap:wrap;gap:1.4rem;justify-content:center;align-items:center;margin-top:1.4rem}
.sponsor{display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:1rem 1.4rem;min-width:120px;min-height:80px;box-shadow:var(--shadow)}
.sponsor:hover{text-decoration:none;border-color:var(--blue)}
.sponsor img{max-height:70px;max-width:180px;display:block}
.sponsor-name{font-weight:700;color:var(--ink)}

/* Bib numbers στην επιβεβαίωση */
.bib-list{background:var(--blue-light);border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.4rem 0;text-align:left;display:inline-block}
.bib-row{display:flex;align-items:center;gap:.8rem;margin:.4rem 0}
.bib-num{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;background:var(--blue);color:#fff;font-weight:800;font-size:1.2rem;border-radius:10px;padding:0 .4rem}

/* Results (δημόσια) */
.tabs{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.4rem}
.tab{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.5rem 1.2rem;font-weight:700;cursor:pointer;color:var(--muted)}
.tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.res-cat{margin:1.4rem 0 .6rem;color:var(--blue)}
.restable{width:100%;border-collapse:collapse;background:#fff;font-size:.95rem}
.restable th,.restable td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--line)}
.restable th{background:#f0f5fb;font-size:.82rem;text-transform:uppercase;color:var(--muted)}
.restable .pos{font-weight:800;color:var(--blue)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}

/* Forms */
.form-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow)}
.field{margin-bottom:1.1rem}
.field label{display:block;font-weight:600;margin-bottom:.35rem;font-size:.95rem}
.field input,.field select,.field textarea{width:100%;padding:.7rem .85rem;border:1px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-light)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
.check{display:flex;gap:.6rem;align-items:flex-start;margin:.6rem 0;font-size:.95rem;cursor:pointer}
.check input{margin-top:.25rem}

/* Notices */
.notice{padding:.9rem 1.1rem;border-radius:10px;margin-bottom:1.2rem}
.notice.ok{background:#e6f5ec;color:var(--ok);border:1px solid #b5e0c6}
.notice.err{background:#fbeae8;color:var(--err);border:1px solid #f0c2bc}
.notice ul{margin:0;padding-left:1.2rem}
.success-ico{width:72px;height:72px;line-height:72px;border-radius:50%;background:var(--ok);color:#fff;font-size:2.4rem;margin:0 auto 1rem}

/* Footer */
.site-footer{background:var(--ink);color:#c7d0dc;padding:3rem 0 1.5rem;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:2rem}
.site-footer h4{color:#fff;margin:0 0 .6rem;font-size:1rem}
.footer-brand{font-weight:800;color:#fff;font-size:1.1rem;margin-bottom:.4rem}
.site-footer a{color:#9ec3ee}
.site-footer .muted{color:#8b97a6}
.social a{margin-right:1rem}
.nl-form{display:flex;gap:.5rem;margin-top:.6rem}
.nl-form input{flex:1;padding:.6rem .8rem;border-radius:8px;border:1px solid #3a4658;background:#232d3d;color:#fff}
.copyright{border-top:1px solid #2a3444;margin-top:2rem;padding-top:1.2rem;font-size:.85rem;color:#8b97a6}

/* Responsive */
@media(max-width:820px){
  .two-col,.cards-3,.news-grid,.grid-2,.footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:2.4rem}
  .navburger{display:flex;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
  .navburger span{width:26px;height:3px;background:var(--ink);border-radius:2px}
  .mainnav{position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:.5rem 20px 1rem;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .mainnav a{padding:.8rem 0;border-bottom:1px solid var(--line)}
  .btn-nav{text-align:center;margin-top:.6rem}
  .navtoggle:checked ~ .mainnav{display:flex}
}