/* event template — energetic but readable, structured around date/place. */

:root {
  --container: 1100px;
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px;
  --space-4: 16px; --space-5: 24px; --space-6: 32px;
  --space-7: 48px; --space-8: 64px; --space-9: 96px;
  --radius: 10px; --radius-lg: 16px;
  --transition: 180ms ease;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: var(--font-sans);
}

[data-density="compact"]     { --gap: var(--space-4); --section-pad: var(--space-7); --hero-pad: var(--space-8); }
[data-density="comfortable"] { --gap: var(--space-5); --section-pad: var(--space-8); --hero-pad: var(--space-9); }
[data-density="airy"]        { --gap: var(--space-6); --section-pad: var(--space-9); --hero-pad: 128px; }

[data-theme="light"] { --bg: #ffffff; --fg: #0e1628; --muted: #5b6478; --surface: #f6f8fb; --border: #e6ebf3; --on-primary: #ffffff; }
[data-theme="dark"]  { --bg: #0b0f1a; --fg: #e9edf5; --muted: #98a3b6; --surface: #131a2a; --border: #1d2538; --on-primary: #ffffff; }
[data-theme="ai"]    { --bg: #07080d; --fg: #ecf0fa; --muted: #94a3bd; --surface: #0e1220; --border: #1c2235; --on-primary: #ffffff; }

[data-palette="slate"]   { --primary: #334155; --primary-hover: #1e293b; --accent: #64748b; }
[data-palette="indigo"]  { --primary: #4f46e5; --primary-hover: #4338ca; --accent: #818cf8; }
[data-palette="emerald"] { --primary: #059669; --primary-hover: #047857; --accent: #34d399; }
[data-palette="rose"]    { --primary: #e11d48; --primary-hover: #be123c; --accent: #fb7185; }
[data-palette="amber"]   { --primary: #b45309; --primary-hover: #92400e; --accent: #f59e0b; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); color: var(--fg); font-family: var(--font-sans); line-height: 1.55; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover, a:focus-visible { color: var(--primary-hover); text-decoration: underline; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }

/* HEADER */
.hdr { position: sticky; top: 0; z-index: 10; background: color-mix(in oklab, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.hdr-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: var(--space-3) 0; }
.brand { display: flex; align-items: center; gap: var(--space-2); color: var(--fg); font-weight: 700; }
.brand img { width: auto; height: 28px; }
.hdr-nav { display: flex; gap: var(--space-5); }
.hdr-nav a { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 720px) { .hdr-nav { display: none; } }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: 10px 18px; border-radius: var(--radius); font-weight: 700; transition: var(--transition); border: 1px solid transparent; }
.btn-sm { padding: 6px 12px; font-size: 0.9rem; }
.btn-lg { padding: 14px 24px; font-size: 1.05rem; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--primary-hover); text-decoration: none; }

/* HERO */
.hero { padding: var(--hero-pad) 0; text-align: center; background:
  radial-gradient(ellipse 800px 400px at 50% 0%, color-mix(in oklab, var(--primary) 20%, transparent), transparent 70%); }
.hero-eyebrow { color: var(--primary); font-weight: 700; text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.85rem; margin: 0 0 var(--space-4); }
.hero-headline { font-family: var(--font-display); font-weight: 800; font-size: clamp(2.4rem, 6vw, 4.4rem); line-height: 1.05; letter-spacing: -0.025em; margin: 0 0 var(--space-4); }
.hero-tagline { color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.25rem); max-width: 640px; margin: 0 auto var(--space-6); }
.hero-meta { display: inline-flex; flex-wrap: wrap; gap: var(--space-6); margin: 0 0 var(--space-6); padding: var(--space-4) var(--space-6); border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.hero-meta div { display: flex; flex-direction: column; align-items: center; gap: var(--space-1); }
.hero-meta dt { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 600; }
.hero-meta dd { font-weight: 700; font-size: 1.05rem; margin: 0; }

/* SECTION HEADINGS */
.section-heading { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.6rem, 3vw, 2.25rem); margin: 0 0 var(--space-7); text-align: center; letter-spacing: -0.02em; }

/* SCHEDULE */
.schedule { padding: var(--section-pad) 0; }
.schedule-days { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--space-7); }
.schedule-day-label { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: var(--primary); margin: 0 0 var(--space-4); padding-bottom: var(--space-3); border-bottom: 2px solid var(--primary); }
.schedule-items { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.schedule-item { display: grid; grid-template-columns: 64px 1fr; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--border); }
.schedule-item:last-child { border-bottom: 0; }
.schedule-time { font-variant-numeric: tabular-nums; color: var(--primary); font-weight: 700; font-size: 0.95rem; padding-top: 2px; }
.schedule-title { font-size: 1rem; margin: 0 0 var(--space-1); font-weight: 600; }
.schedule-by { color: var(--muted); font-size: 0.9rem; margin: 0; }

/* SPEAKERS */
.speakers { padding: var(--section-pad) 0; background: var(--surface); }
.speakers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--gap); list-style: none; padding: 0; margin: 0; }
.speaker { text-align: center; }
.speaker-link { display: block; color: inherit; }
.speaker-link:hover { text-decoration: none; }
.speaker img, .speaker-avatar-fallback { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius-lg); display: block; }
.speaker-avatar-fallback { background: linear-gradient(135deg, var(--primary), var(--accent)); color: var(--on-primary); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-weight: 800; font-size: 3rem; }
.speaker-name { font-size: 1rem; margin: var(--space-3) 0 var(--space-1); font-weight: 700; }
.speaker-title { color: var(--muted); font-size: 0.88rem; margin: 0; }

/* VENUE */
.venue { padding: var(--section-pad) 0; }
.venue-inner { max-width: 720px; }
.venue .section-heading { text-align: left; }
.venue-body { color: var(--fg); font-size: 1rem; line-height: 1.7; }
.venue-body p { margin: 0 0 var(--space-4); }

/* HOURS */
.hours { padding: var(--section-pad) 0; }
.hours-list { max-width: 480px; margin: 0 auto; padding: 0; }
.hours-row { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--border); }
.hours-row:last-child { border-bottom: 0; }
.hours-row dt { font-weight: 600; }
.hours-row dd { margin: 0; color: var(--muted); text-align: right; }

/* FAQ */
.faq { padding: var(--section-pad) 0; background: var(--surface); }
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-3); }
.faq-item { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-3) var(--space-5); }
.faq-item summary { font-weight: 600; cursor: pointer; padding: var(--space-3) 0; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; transition: transform var(--transition); }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { color: var(--muted); padding-bottom: var(--space-3); }

/* NEWSLETTER */
.newsletter { padding: var(--section-pad) 0; text-align: center; }
.newsletter-inner { max-width: 560px; }
.newsletter-sub { color: var(--muted); font-size: 1.05rem; margin: 0 0 var(--space-5); }

/* TICKETS */
.tickets { padding: var(--section-pad) 0; background: var(--primary); color: var(--on-primary); text-align: center; }
.tickets-inner { max-width: 600px; }
.tickets-heading { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 var(--space-3); letter-spacing: -0.02em; }
.tickets-body { font-size: 1.1rem; opacity: 0.9; margin: 0 0 var(--space-6); }
.tickets .btn-primary { background: var(--bg); color: var(--fg); }
.tickets .btn-primary:hover { background: var(--surface); }
.tickets-note { color: var(--on-primary); opacity: 0.75; font-size: 0.85rem; margin: var(--space-4) 0 0; }

/* FOOTER + WATERMARK */
.ddv-footer { padding: var(--space-6) 0; border-top: 1px solid var(--border); margin-top: 0; text-align: center; color: var(--muted); }
.ddv-footer-inner small { font-size: 0.85rem; }
.ddv-watermark { position: fixed; bottom: 12px; right: 12px; z-index: 50; }
.ddv-watermark a { display: inline-flex; align-items: center; padding: 6px 10px; background: var(--bg); color: var(--muted); border: 1px solid var(--border); border-radius: 999px; font-size: 0.78rem; box-shadow: 0 1px 4px rgba(0,0,0,0.06); }
.ddv-watermark a:hover { color: var(--fg); }