/* TU/e–Intel Workshop 2026 — intel-tue-workshop.federicocorradi.it */
:root{
  --ink:#0f172a;
  --ink-soft:#1e293b;
  --accent:#2563eb;
  --accent-dark:#1d4ed8;
  --accent-deep:#1e3a8a;
  --amber:#b45309;
  --purple:#7e22ce;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f8fafc;
  --radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
img{max-width:100%;display:block}
a{color:var(--accent-dark)}
.container{max-width:1040px;margin:0 auto;padding:0 1.5rem}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.93);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1040px;margin:0 auto;padding:.7rem 1.5rem;display:flex;align-items:center;gap:1.75rem}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:700;color:var(--ink);text-decoration:none;font-size:1.02rem}
.brand .dot{width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--accent),var(--accent-deep));box-shadow:0 0 0 3px rgba(37,99,235,.15)}
.brand .year{color:var(--accent);font-weight:800}
.links{display:flex;gap:1.4rem;margin-left:auto}
.links a{color:var(--muted);text-decoration:none;font-weight:500;font-size:.95rem}
.links a:hover{color:var(--ink)}
.links a.active{color:var(--accent-dark);font-weight:700}
.chip{background:#eff6ff;color:var(--accent-dark);border:1px solid #bfdbfe;border-radius:999px;padding:.3rem .8rem;font-size:.83rem;font-weight:600;text-decoration:none;white-space:nowrap}
@media(max-width:820px){.chip{display:none}.nav-inner{gap:1rem}.links{gap:1rem}}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,rgba(15,23,42,.82) 0%,rgba(30,58,138,.68) 60%,rgba(29,78,216,.55) 100%),url("../images/hero.jpg") center/cover no-repeat;color:#fff;position:relative;overflow:hidden}
.hero-inner{position:relative;max-width:1040px;margin:0 auto;padding:5.5rem 1.5rem 4.5rem}
.hero.slim .hero-inner{padding:3.4rem 1.5rem 2.8rem}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#93c5fd;margin:0 0 .8rem}
h1{font-size:clamp(1.75rem,4.2vw,3rem);line-height:1.15;margin:.4rem 0 .6rem;max-width:24ch}
.hero.slim h1{font-size:clamp(1.6rem,3.4vw,2.4rem)}
.subtitle{font-size:clamp(1.05rem,2.2vw,1.35rem);color:#dbeafe;margin:0 0 1.8rem;font-weight:500}
.pills{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:2rem}
.pill{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);padding:.42rem 1rem;border-radius:999px;font-size:.9rem;font-weight:500}
.pill.invite{background:rgba(251,191,36,.16);border-color:rgba(251,191,36,.45);color:#fde68a;font-weight:600}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;padding:.7rem 1.4rem;border-radius:10px;box-shadow:0 8px 20px rgba(2,6,23,.35)}
.btn:hover{background:var(--accent-dark)}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.4);box-shadow:none}
.btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- Sections ---------- */
.section{padding:3.5rem 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-title{font-size:1.6rem;margin:0 0 1.4rem;color:var(--ink)}
.lead{font-size:1.03rem;color:var(--ink-soft)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
@media(max-width:820px){.grid-2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;box-shadow:0 1px 3px rgba(15,23,42,.05)}
h3{margin:.1rem 0 .3rem;font-size:1.12rem}
ul.checks{list-style:none;padding:0;margin:0}
ul.checks li{padding-left:1.7rem;position:relative;margin:.55rem 0;color:var(--ink-soft)}
ul.checks li::before{content:"";position:absolute;left:0;top:.45em;width:.75rem;height:.75rem;border-radius:3px;background:linear-gradient(135deg,var(--accent),#60a5fa)}

/* ---------- People ---------- */
.person{display:flex;gap:1.1rem;align-items:flex-start}
.avatar{flex:0 0 auto;width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem;color:#fff;letter-spacing:.02em}
.avatar.blue{background:linear-gradient(135deg,#2563eb,#1e3a8a)}
.avatar.amber{background:linear-gradient(135deg,#d97706,#b45309)}
.avatar.purple{background:linear-gradient(135deg,#9333ea,#6d28d9)}
.avatar.slate{background:linear-gradient(135deg,#475569,#1e293b)}
.avatar.photo{background:none;padding:0;overflow:hidden}
.avatar.photo img{width:100%;height:100%;object-fit:cover;display:block}
.affil{color:var(--muted);margin:.1rem 0 .6rem;font-size:.95rem}
.talk-title{font-weight:600;font-style:italic;margin:.2rem 0 .5rem}
.bio{margin:.4rem 0 0;color:var(--ink-soft);font-size:.95rem}
.speaker-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
@media(max-width:860px){.speaker-grid{grid-template-columns:1fr}}

/* ---------- Program table ---------- */
table.program{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 3px rgba(15,23,42,.06)}
.program th{background:#f1f5f9;text-align:left;padding:.8rem 1.1rem;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.program td{padding:.95rem 1.1rem;border-top:1px solid var(--line);vertical-align:top}
.program td.time{white-space:nowrap;font-weight:700;color:var(--accent-deep);width:9rem}
.program .sess{font-weight:700;color:var(--ink)}
.program .desc{color:var(--muted);font-size:.92rem;margin:.15rem 0 0}
.tag{display:inline-block;font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding:.18rem .55rem;border-radius:999px;vertical-align:middle;margin-left:.5rem;white-space:nowrap}
.tag-keynote{background:#fef3c7;color:var(--amber)}
.tag-invited{background:#dbeafe;color:#1d4ed8}
.tag-host{background:#e0e7ff;color:#4338ca}
.tag-panel{background:#f3e8ff;color:var(--purple)}
.tag-break{background:#f1f5f9;color:var(--muted)}
tr.break td{color:var(--muted)}
.note{color:var(--muted);font-size:.88rem;margin-top:1rem}
@media(max-width:640px){.program td.time{width:auto;font-size:.85rem}}

/* ---------- Map ---------- */
.map iframe{width:100%;height:400px;border:0;border-radius:var(--radius);box-shadow:0 1px 3px rgba(15,23,42,.08)}

/* ---------- Footer ---------- */
footer{background:#fff;border-top:1px solid var(--line);padding:2.5rem 0 2rem}
.footer-inner{max-width:1040px;margin:0 auto;padding:0 1.5rem}
.logos{display:flex;flex-wrap:wrap;gap:1.5rem;align-items:center;margin-bottom:1.5rem}
.logos a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:.55rem 1rem;display:inline-block}
.logos img{height:56px;width:auto;object-fit:contain}
.fine{color:var(--muted);font-size:.85rem;margin:.4rem 0 0}

/* ---------- Registration form ---------- */
.form label{display:block;font-weight:600;margin:1.1rem 0 .35rem;font-size:.95rem}
.form input,.form select,.form textarea{width:100%;padding:.65rem .8rem;border:1px solid #cbd5e1;border-radius:8px;font:inherit;background:#fff;color:var(--ink)}
.form textarea{min-height:90px;resize:vertical}
.form input[type=radio]{width:auto;margin:0}
.radio-row{display:flex;flex-wrap:wrap;gap:1.2rem;margin:.35rem 0 0}
.radio-row label{display:flex;align-items:center;gap:.4rem;font-weight:500;margin:0;font-size:.95rem}
.form .hint{color:var(--muted);font-size:.85rem;margin:.6rem 0 0}
.form .btn.submit{font:inherit;width:100%;margin-top:1.4rem;cursor:pointer;border:0;font-size:1rem}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.required::after{content:" *";color:#dc2626}
.msg{border-radius:10px;padding:1rem 1.2rem;margin:0 0 1.4rem;font-size:.98rem}
.msg.ok{background:#dcfce7;border:1px solid #86efac;color:#14532d}
.msg.err{background:#fee2e2;border:1px solid #fca5a5;color:#7f1d1d}
.msg.info{background:#dbeafe;border:1px solid #93c5fd;color:#1e3a8a}