/* Basic layout and placeholder styles for the symposium site */
:root{
	--max-width: 1440px;
	--content-width: 1280px;
	--accent: #2b6cb0;
	--muted: #666;
}
*{box-sizing:border-box}
body{display:flex;flex-direction:column;min-height:100vh;font-family:Segoe UI,Roboto,Arial,sans-serif;line-height:1.5;margin:0;color:#222}
.container{max-width:var(--max-width);margin:0 auto;padding:0 32px;width:100%}
main{flex:1;padding:20px 0}
main.container,.site-header .container,.site-footer .container{max-width:var(--content-width)}

/* Header — top accent stripe + unified block */
.site-header{background:#eef3fb}
.site-header::before{content:'';display:block;height:3px;background:linear-gradient(90deg,#1a3a5c 0%,#2b6cb0 50%,#4a90d9 100%)}
.header-content{display:flex;justify-content:space-between;align-items:center;padding:16px 0}
.logo-area h1{margin:0;font-size:22px;font-weight:700;color:#1a3a5c;letter-spacing:-0.3px}
.logo-area p{margin:4px 0 0;color:#6b8299;font-size:13px;font-style:italic}
.date-info{text-align:right}
.date-info .date{margin:0;font-size:14px;font-weight:600;color:#1a3a5c}
.date-info .location{margin:3px 0 0;font-size:13px;color:#6b8299}

/* Navigation — inside the header block */
.main-nav{border-top:1px solid #ccd8ed;background:#eef3fb}
.main-nav .container{padding-top:0;padding-bottom:0}
.main-nav ul{list-style:none;margin:0;padding:6px 0;display:flex;gap:2px;flex-wrap:wrap}
.main-nav a{color:#44607a;text-decoration:none;padding:6px 12px;border-radius:4px;font-size:13.5px;display:block;white-space:nowrap;transition:background .12s,color .12s}
.main-nav a:hover{background:#d6e4f5;color:#1a3a5c}
.main-nav a.active{background:var(--accent);color:#fff}

/* Content */
.content-section{padding:20px 0}
.hero-box{background:#eef6ff;border-left:4px solid var(--accent);padding:14px 16px;border-radius:6px}
.placeholder-box{background:#fafafa;border:1px dashed #ddd;padding:16px;border-radius:6px;margin-top:12px}

.btn{display:inline-block;padding:8px 16px;border-radius:6px;background:var(--accent);color:#fff;border:none;cursor:pointer;font-size:14px}
.btn[disabled]{opacity:0.5;cursor:not-allowed}

/* Footer */
.site-footer{background:#f7f7f8;padding:16px 0;border-top:1px solid #eaeaea;margin-top:36px}
.footer-links{margin-top:6px}
.footer-links a{color:var(--muted);text-decoration:none;margin:0 6px}
.footer-links a:hover{text-decoration:underline}
.site-footer p{margin:0}

/* Schedule & fees tables */
.schedule-table{width:100%;border-collapse:collapse;font-size:14px}
.schedule-table tr{border-bottom:1px solid #e8e8e8}
.schedule-table tr:last-child{border-bottom:none}
.schedule-table td{padding:7px 10px;vertical-align:top}
.schedule-table td.time{white-space:nowrap;color:var(--muted);font-variant-numeric:tabular-nums;min-width:140px}
.tag{display:inline-block;font-size:11px;padding:1px 6px;border-radius:3px;background:#dce7f3;color:#2b6cb0;margin-left:6px;vertical-align:middle}

.fees-table{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px}
.fees-table th,.fees-table td{padding:8px 12px;text-align:left;border-bottom:1px solid #e8e8e8}
.fees-table thead th{background:#eef2f8;font-weight:600;color:#1a3a5c}
.fees-table tbody tr:last-child td{border-bottom:none}

.contact-list{padding-left:0;list-style:none}
.contact-list li{padding:4px 0}

/* Small utility */
h2{margin-top:0}

/* Hamburger button — hidden on desktop */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:6px;border-radius:4px}
.nav-toggle:hover{background:#d6e4f5}
.nav-toggle span{display:block;width:22px;height:2px;background:#1a3a5c;border-radius:2px;transition:transform .2s ease,opacity .2s ease}

/* Tablet */
@media (max-width:900px){
	.container{padding:0 20px}
}

/* Mobile */
@media (max-width:640px){
	.container{padding:0 16px}
	.date-info{display:none}
	.nav-toggle{display:flex}

	/* Collapsed nav */
	.main-nav ul{display:none;flex-direction:column;padding:4px 0 8px;gap:0}
	.main-nav.open ul{display:flex}
	.main-nav a{border-radius:0;padding:10px 12px;border-bottom:1px solid #dce7f0;font-size:14px}
	.main-nav li:last-child a{border-bottom:none}

	/* Lines → X */
	.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
	.nav-toggle.open span:nth-child(2){opacity:0;transform:scaleX(0)}
	.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

	main{padding:16px 0}
}