:root {
  --ink: #0A2540;
  --ink-soft: #3D5A73;
  --paper: #EEF5FA;
  --surface: #ffffff;
  --line: rgba(10, 37, 64, 0.12);
  --sea: #009EDB;
  --sea-deep: #0077A8;
  --amber: #F2C94C;
  --night: #0A2540;
  --shadow: 0 20px 50px rgba(10, 37, 64, 0.12);
  --font: "Figtree", system-ui, sans-serif;
  --display: "Syne", system-ui, sans-serif;
  --max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: var(--sea); text-decoration: none; }
a:hover { color: var(--sea-deep); }
ul { list-style: none; }

.container { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.4rem; padding: 0.85rem 1.4rem; border-radius: 999px;
  font-weight: 700; font-size: 0.92rem; border: none; cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease;
  font-family: inherit;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--sea); color: #fff; }
.btn-primary:hover { background: var(--sea-deep); color: #fff; }
.btn-amber { background: var(--amber); color: var(--night); }
.btn-amber:hover { filter: brightness(1.05); color: var(--night); }
.btn-ghost {
  background: transparent; color: inherit;
  border: 1px solid currentColor;
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); }
.btn-block { width: 100%; }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.85rem; }

/* Header */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--night) 78%, transparent);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0; width: min(100% - 2.5rem, var(--max)); margin-inline: auto;
}
.logo {
  display: flex; align-items: center; gap: 0.65rem; color: #fff; font-weight: 700;
}
.logo-mark {
  width: 2.1rem; height: 2.1rem; border-radius: 8px;
  background: linear-gradient(145deg, var(--sea), var(--amber));
  display: grid; place-items: center; font-family: var(--display);
  font-size: 0.7rem; font-weight: 800; color: #fff;
}
.logo-text { font-family: var(--display); font-size: 1.15rem; letter-spacing: -0.02em; }
.logo-text span { color: var(--amber); font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; }
.nav-links a {
  color: rgba(255,255,255,0.78); font-size: 0.86rem; font-weight: 600;
}
.nav-links a:hover { color: #fff; }
.nav-cta { background: var(--amber); color: var(--night) !important; padding: 0.45rem 0.9rem; border-radius: 999px; }
.nav-toggle {
  display: none; background: none; border: 0; color: #fff; font-size: 1.4rem; cursor: pointer;
}

/* Hero */
.hero {
  min-height: 100vh; position: relative; display: grid; align-items: end;
  color: #fff; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--night) 92%, transparent) 0%, color-mix(in srgb, var(--night) 55%, transparent) 48%, color-mix(in srgb, var(--sea) 42%, transparent) 100%),
    url("https://images.unsplash.com/photo-1559827260-dc66d52bef19?auto=format&fit=crop&w=1800&q=80") center/cover no-repeat;
  animation: hero-drift 22s ease-in-out infinite alternate;
}
@keyframes hero-drift {
  from { transform: scale(1); }
  to { transform: scale(1.05); }
}
.hero-inner {
  position: relative; z-index: 1;
  width: min(100% - 2.5rem, var(--max)); margin: 0 auto;
  padding: 8rem 0 4.5rem;
  animation: rise 0.8s ease both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
.hero-brand {
  font-family: var(--display); font-size: clamp(3.2rem, 9vw, 6.2rem);
  line-height: 0.95; letter-spacing: -0.03em; font-weight: 800; max-width: 12ch;
}
.hero-brand em { font-style: normal; color: var(--amber); }
.hero-lead {
  margin-top: 1.25rem; max-width: 34rem; font-size: 1.1rem;
  color: rgba(255,255,255,0.82);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }

section { padding: 5rem 0; }
.section-kicker {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--sea); margin-bottom: 0.55rem;
}
.section-title {
  font-family: var(--display); font-size: clamp(1.9rem, 4vw, 2.8rem);
  letter-spacing: -0.02em; line-height: 1.1; max-width: 18ch;
}
.section-text { margin-top: 0.9rem; color: var(--ink-soft); max-width: 40rem; }

.about-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3rem; align-items: center;
}
.about-visual {
  min-height: 380px; border-radius: 18px; overflow: hidden;
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--sea) 35%, transparent), color-mix(in srgb, var(--night) 50%, transparent)),
    url("https://images.unsplash.com/photo-1529107386315-e1a2ed48a620?auto=format&fit=crop&w=1000&q=80") center/cover;
  box-shadow: var(--shadow);
  animation: floaty 7s ease-in-out infinite;
}
@keyframes floaty {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.agenda-list { margin-top: 2rem; display: grid; gap: 0.75rem; }
.agenda-item {
  display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem;
  padding: 1rem 0; border-bottom: 1px solid var(--line);
}
.agenda-time { font-weight: 700; color: var(--sea); font-size: 0.9rem; }
.agenda-session { font-family: var(--display); font-size: 1.15rem; font-weight: 700; }
.agenda-note { color: var(--ink-soft); font-size: 0.92rem; margin-top: 0.2rem; }

.speakers-grid, .hotels-grid, .places-grid {
  display: grid; gap: 1.25rem; margin-top: 2rem;
}
.speakers-grid { grid-template-columns: repeat(4, 1fr); }
.places-grid { grid-template-columns: repeat(3, 1fr); }
.hotels-grid { grid-template-columns: repeat(3, 1fr); }

.speaker {
  text-align: center;
}
.speaker-photo {
  aspect-ratio: 1; border-radius: 16px; overflow: hidden; margin-bottom: 0.85rem;
  background: linear-gradient(145deg, var(--sea), var(--night));
  display: grid; place-items: center; color: #fff;
  font-family: var(--display); font-size: 2rem; font-weight: 800;
}
.speaker strong { display: block; font-family: var(--display); font-size: 1.05rem; }
.speaker span { color: var(--ink-soft); font-size: 0.88rem; }
.speaker-photo-logo {
  background: #fff !important;
  border: 1px solid var(--line);
  padding: 0.55rem;
}
.speaker-photo-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.partners-row {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}
.partner-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.partner-card:hover {
  border-color: color-mix(in srgb, var(--sea) 45%, var(--line));
  box-shadow: var(--shadow);
  color: inherit;
}
.partner-card-featured {
  background: linear-gradient(135deg, #fff 0%, color-mix(in srgb, var(--sea) 8%, #fff) 100%);
}
.partner-card img {
  width: min(100%, 280px);
  height: auto;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 0.65rem 0.85rem;
}
.partner-card strong {
  display: block;
  font-family: var(--display);
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}
.partner-card span {
  display: block;
  color: var(--ink-soft);
  max-width: 36rem;
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
  align-items: center;
}
.footer-partner {
  margin: 0.45rem 0 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.footer-logos {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.footer-logos img {
  height: 44px;
  width: auto;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--line);
  padding: 0.25rem 0.45rem;
}

.place, .hotel {
  background: var(--surface); border-radius: 16px; overflow: hidden;
  border: 1px solid var(--line);
}
.place img, .hotel img { width: 100%; height: 180px; object-fit: cover; }
.place-body, .hotel-body { padding: 1.1rem 1.15rem 1.25rem; }
.place h3, .hotel h3 { font-family: var(--display); font-size: 1.15rem; margin-bottom: 0.35rem; }
.place p, .hotel p { color: var(--ink-soft); font-size: 0.92rem; }
.hotel .meta { font-size: 0.8rem; font-weight: 700; color: var(--sea); margin-bottom: 0.35rem; }

.cta-band {
  background: var(--night); color: #fff; border-radius: 24px; padding: 2.5rem;
  display: flex; flex-wrap: wrap; gap: 1.25rem; justify-content: space-between; align-items: center;
}
.cta-band h2 { font-family: var(--display); font-size: clamp(1.6rem, 3vw, 2.2rem); max-width: 16ch; }
.cta-band p { color: rgba(255,255,255,0.72); max-width: 28rem; margin-top: 0.5rem; }

.site-footer {
  padding: 2rem 0 2.5rem; color: var(--ink-soft); font-size: 0.9rem;
  border-top: 1px solid var(--line); margin-top: 2rem;
}

/* Auth / dashboard shells */
.auth-page {
  min-height: 100vh; display: grid; place-items: center; padding: 2rem 1rem;
  background:
    radial-gradient(ellipse 70% 50% at 10% 0%, color-mix(in srgb, var(--sea) 22%, transparent), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 10%, color-mix(in srgb, var(--amber) 20%, transparent), transparent 50%),
    var(--paper);
}
.auth-card, .dash-card {
  width: min(100%, 520px); background: var(--surface);
  border: 1px solid var(--line); border-radius: 20px; padding: 1.75rem;
  box-shadow: var(--shadow);
}
.auth-card-sm {
  width: min(100%, 360px);
  padding: 1.25rem 1.2rem 1.15rem;
  border-radius: 16px;
}
.auth-card-sm h1 {
  font-size: 1.45rem;
  margin-bottom: 0.15rem;
}
.auth-card-sm .muted {
  font-size: 0.88rem;
  margin: 0.25rem 0 0.9rem;
}
.auth-card-sm .field {
  margin-bottom: 0.7rem;
}
.auth-divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1rem 0 0.85rem;
}
.dash-card { width: min(100%, 820px); }
.auth-card h1, .dash-card h1 {
  font-family: var(--display); font-size: 1.85rem; letter-spacing: -0.02em;
}
.muted { color: var(--ink-soft); margin: 0.5rem 0 1.25rem; }
.field { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.9rem; }
.field span { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-soft); }
.field input, .field select {
  border: 1px solid var(--line); border-radius: 12px; padding: 0.75rem 0.9rem;
  font: inherit; background: #fff; width: 100%;
}
.field input:focus, .field select:focus {
  outline: 3px solid rgba(0, 158, 219, 0.22); border-color: var(--sea);
}
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 1.25rem; }
.tab {
  text-align: center; padding: 0.7rem; border-radius: 999px; border: 1px solid var(--line);
  font-weight: 700; font-size: 0.85rem; color: var(--ink-soft); background: #fff;
}
.tab.active { background: var(--night); color: #fff; border-color: var(--night); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.error {
  background: #fdecea; color: #b42318; border-radius: 12px; padding: 0.75rem 0.9rem;
  margin-bottom: 1rem; font-size: 0.92rem;
}
.ok {
  background: color-mix(in srgb, var(--sea) 14%, #fff); color: var(--sea-deep); border-radius: 12px; padding: 0.75rem 0.9rem;
  margin-bottom: 1rem;
}
.dash-bar {
  background: var(--night); color: #fff; padding: 0.9rem 1.25rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.dash-bar a { color: rgba(255,255,255,0.8); font-weight: 600; font-size: 0.9rem; }
.dash-wrap { width: min(100% - 2rem, 900px); margin: 2rem auto 3rem; }
.code-panel {
  background: linear-gradient(145deg, var(--night), var(--sea));
  color: #fff; border-radius: 18px; padding: 1.5rem; margin: 1.25rem 0;
  text-align: center;
}
.code-panel small {
  display: block; letter-spacing: 0.14em; text-transform: uppercase;
  font-size: 0.72rem; opacity: 0.8; margin-bottom: 0.55rem;
}
.code-panel strong {
  font-family: var(--display); font-size: clamp(1.5rem, 4vw, 2.2rem);
  letter-spacing: 0.1em;
}
.actions { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 1rem; }
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 1.25rem; }
.info-grid div {
  background: var(--paper); border-radius: 12px; padding: 0.9rem 1rem;
}
.info-grid span {
  display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-soft); margin-bottom: 0.25rem; font-weight: 700;
}
.share-box {
  margin-top: 1.25rem; padding: 1rem; border: 1px dashed var(--line); border-radius: 14px;
}
.share-box code {
  display: block; margin-top: 0.45rem; word-break: break-all;
  background: var(--paper); padding: 0.65rem 0.75rem; border-radius: 10px; font-size: 0.88rem;
}

@media (max-width: 900px) {
  .about-grid, .speakers-grid, .places-grid, .hotels-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-start;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(11,21,32,0.96); padding: 1rem 1.25rem 1.25rem;
  }
  .nav-toggle { display: inline-flex; }
}
@media (max-width: 640px) {
  .about-grid, .speakers-grid, .places-grid, .hotels-grid, .grid-2, .info-grid, .agenda-item {
    grid-template-columns: 1fr;
  }
}