/* ============================================
   Zions Innovation Week 2026 — Theme
   Palette:
   --red:        #ab2c29
   --navy:       #003764
   --blue:       #005487
   --sky:        #7ea0c4
   --gold:       #be955b
============================================ */

:root {
  --red: #ab2c29;
  --navy: #003764;
  --blue: #005487;
  --sky: #7ea0c4;
  --gold: #be955b;
  --gold-light: #d4b783;
  --gold-dark: #8c6a3d;

  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1d2330;
  --muted: #6b7384;
  --border: #e3e7ef;
  --shadow: 0 2px 8px rgba(0, 55, 100, 0.08);
  --shadow-lg: 0 8px 28px rgba(0, 55, 100, 0.15);

  /* Session type colors */
  --type-presentation: var(--blue);
  --type-presentation-bg: #e6eef5;
  --type-workshop: var(--red);
  --type-workshop-bg: #f7e8e7;
  --type-reception: var(--sky);
  --type-reception-bg: #eaf1f8;
  --type-keynote: var(--navy);
  --type-keynote-bg: #d6e0eb;
  --type-panel: #6d4d91;
  --type-panel-bg: #ede7f4;
  --type-in-person: #2d6a4f;
  --type-in-person-bg: #e0f0e8;
  /* Client Day = gold per spec */
  --type-client-day: var(--gold);
  --type-client-day-bg: #f7ecd8;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea {
  font-family: inherit; font-size: 15px;
  width: 100%; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: 8px;
  background: #fff; color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 84, 135, 0.15);
}
label { display: block; margin-bottom: 14px; }
label > span {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--navy); margin-bottom: 6px;
}
code { background: #eef1f6; padding: 1px 5px; border-radius: 4px; font-size: 12px; }

/* Buttons */
.btn-primary, .btn-secondary, .btn-text {
  padding: 11px 20px; border-radius: 8px;
  font-weight: 600; font-size: 14px;
  transition: transform .1s, box-shadow .15s, background .15s;
}
.btn-primary { background: var(--navy); color: #fff; width: 100%; }
.btn-primary:hover { background: var(--blue); }
.btn-primary:active { transform: scale(.98); }
.btn-secondary { background: #fff; color: var(--navy); border: 1.5px solid var(--navy); }
.btn-secondary:hover { background: var(--navy); color: #fff; }
.btn-text { background: none; color: var(--muted); }
.btn-text:hover { color: var(--navy); }

/* ============================================
   Screens
============================================ */
.screen { display: none !important; }
.screen.active { display: block !important; }
#auth-screen.active { display: flex !important; }

/* ============================================
   Auth screen
============================================ */
#auth-screen {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  align-items: center; justify-content: center;
  padding: 20px;
}
.auth-card {
  background: #fff;
  padding: 36px 32px;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 100%; max-width: 440px;
}
.auth-card.wide { max-width: 560px; }
.auth-bulb {
  text-align: center;
  margin-bottom: 8px;
}
.auth-bulb img {
  width: 78px;
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(0, 55, 100, 0.25));
}
.auth-logo { text-align: center; margin-bottom: 16px; }
.auth-logo img { max-width: 300px; width: 100%; height: auto; }
.auth-card h1 {
  text-align: center; margin: 0 0 4px;
  color: var(--navy); font-size: 24px;
}
.tagline {
  text-align: center; color: var(--gold-dark);
  font-style: italic; margin: 0 0 24px; font-weight: 600;
}
.auth-tabs {
  display: flex; border-bottom: 1.5px solid var(--border);
  margin-bottom: 22px;
}
.auth-tabs .tab {
  flex: 1; padding: 12px;
  font-weight: 600; color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1.5px;
  transition: color .15s, border-color .15s;
}
.auth-tabs .tab.active { color: var(--navy); border-bottom-color: var(--gold); }
.auth-form { display: none; }
.auth-form.active { display: block; }
.auth-hint {
  text-align: center; font-size: 12px; color: var(--muted);
  margin: 14px 0 0;
}

/* OR divider between password sign-in and Google sign-in */
.auth-divider {
  display: flex; align-items: center; gap: 10px;
  margin: 16px 0 12px;
  color: var(--muted); font-size: 12px;
  text-transform: uppercase; letter-spacing: 1px;
}
.auth-divider::before, .auth-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}
.auth-divider span { padding: 0 6px; font-weight: 600; }

/* Google sign-in button */
.btn-google {
  display: flex; align-items: center; justify-content: center;
  gap: 10px;
  width: 100%; padding: 11px 16px;
  background: #fff; color: #1d2330;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-weight: 600; font-size: 14px;
  cursor: pointer;
  transition: background .12s, border-color .15s, box-shadow .15s, transform .08s;
}
.btn-google:hover {
  background: #f5f7fb;
  border-color: var(--blue);
  box-shadow: 0 2px 6px rgba(0, 55, 100, 0.08);
}
.btn-google:active { transform: scale(.98); }
.btn-google:disabled {
  opacity: .6; cursor: not-allowed;
}
.btn-google svg { flex-shrink: 0; }
.form-error {
  background: #fdecea; color: var(--red);
  padding: 10px 12px; border-radius: 6px;
  font-size: 13px; margin-bottom: 12px;
  display: none;
}
.form-error.show { display: block; }

/* ============================================
   App header
============================================ */
.app-header {
  background: var(--navy);
  color: #fff;
  padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 50;
}
.header-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.header-logo {
  width: 36px; height: 50px;
  flex-shrink: 0;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}
.header-left h1 {
  margin: 0; font-size: 17px; font-weight: 700;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.header-sub {
  margin: 0; font-size: 12px; color: var(--sky);
  font-style: italic;
}
.header-right { display: flex; align-items: center; gap: 10px; }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
  transition: background .15s;
}
.icon-btn:hover { background: rgba(255,255,255,.12); }

.user-menu { position: relative; }
.user-chip {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--gold);
  color: #fff; font-weight: 700; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
}
.user-dropdown {
  display: none;
  position: absolute; right: 0; top: calc(100% + 8px);
  background: #fff; color: var(--text);
  min-width: 240px;
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 60;
}
.user-dropdown.open { display: block; }
.user-info {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 4px;
}
.user-info strong { color: var(--navy); }
.user-info span { font-size: 12px; color: var(--muted); }
.user-dropdown button {
  display: block; width: 100%;
  text-align: left; padding: 12px 16px;
  font-size: 14px; font-weight: 500;
  transition: background .12s;
}
.user-dropdown button:hover { background: #f4f6fa; }

.role-pill {
  align-self: flex-start;
  background: var(--type-presentation-bg);
  color: var(--blue);
  font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 999px;
  text-transform: uppercase; letter-spacing: .5px;
  margin-top: 4px !important;
}
.role-pill.admin { background: #f7e8e7; color: var(--red); }
.role-pill.speaker { background: var(--type-client-day-bg); color: var(--gold-dark); }

/* ============================================
   Top tabs
============================================ */
.top-tabs {
  display: flex; gap: 4px;
  background: #fff;
  padding: 10px 14px 0;
  border-bottom: 1.5px solid var(--border);
  position: sticky; top: 68px; z-index: 40;
  overflow-x: auto;
  scrollbar-width: none;
}
.top-tabs::-webkit-scrollbar { display: none; }
.top-tab {
  padding: 10px 18px;
  font-weight: 600; font-size: 14px;
  color: var(--muted);
  border-bottom: 3px solid transparent;
  margin-bottom: -1.5px;
  white-space: nowrap;
  transition: color .15s, border-color .15s;
}
.top-tab.active { color: var(--navy); border-bottom-color: var(--gold); }
.top-tab:hover:not(.active) { color: var(--navy); }

/* View bar */
.view-bar {
  display: flex; flex-wrap: wrap; gap: 14px;
  justify-content: space-between; align-items: center;
  padding: 14px 20px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.view-toggle { display: flex; align-items: center; gap: 6px; }
.view-label { font-size: 13px; color: var(--muted); margin-right: 4px; }
.view-btn {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px; font-weight: 600;
  color: var(--navy);
  border: 1.5px solid var(--border);
  background: #fff;
}
.view-btn.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.dot {
  width: 10px; height: 10px; border-radius: 50%;
  display: inline-block;
}
.dot.type-presentation { background: var(--type-presentation); }
.dot.type-workshop { background: var(--type-workshop); }
.dot.type-reception { background: var(--type-reception); }
.dot.type-client-day { background: var(--type-client-day); }

/* ============================================
   Content sections
============================================ */
.content-section {
  display: none;
  padding: 16px 20px 60px;
  max-width: 1100px;
  margin: 0 auto;
}
.content-section.active { display: block; }
.content-section h2 {
  color: var(--navy); margin: 8px 0 16px;
  font-size: 22px;
}

/* Wordmark banner */
.wordmark-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin: 0 0 22px;
  padding: 20px 28px;
  background: linear-gradient(135deg, #ffffff 0%, #f5f7fb 100%);
  border-radius: 14px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.wordmark-banner .wordmark-bulb {
  width: 90px;
  height: auto;
  flex-shrink: 0;
  filter: drop-shadow(0 3px 8px rgba(0, 55, 100, 0.18));
}
.wordmark-banner .wordmark-text {
  max-width: 560px; width: 100%;
  height: auto;
  flex: 1;
  min-width: 0;
}

@media (max-width: 640px) {
  .wordmark-banner { padding: 16px 18px; gap: 14px; }
  .wordmark-banner .wordmark-bulb { width: 60px; }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border-radius: 14px;
  border: 1.5px dashed var(--border);
  color: var(--navy);
}
.empty-state.hidden { display: none; }
.empty-illustration {
  color: var(--gold);
  margin-bottom: 12px;
}
.empty-state h2 { margin: 8px 0; }
.empty-state p { color: var(--muted); margin: 0 0 18px; }
.star-inline {
  color: var(--gold); font-size: 18px; font-weight: 700;
}
.empty-state .btn-primary { max-width: 280px; margin: 0 auto; }

/* ============================================
   Day groups (collapsible)
============================================ */
.day-group { margin-bottom: 14px; }
.day-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  background: var(--navy); color: #fff;
  border-radius: 10px;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  transition: background .15s;
}
.day-header.client-day { background: var(--gold); color: var(--navy); }
.day-header:hover { filter: brightness(1.05); }
.day-header .day-meta { font-size: 12px; opacity: .85; font-weight: 500; }
.day-header .caret {
  transition: transform .2s;
  font-size: 18px;
}
.day-group.collapsed .caret { transform: rotate(-90deg); }
.day-group.collapsed .day-content { display: none; }
.day-content { padding: 12px 0 0; display: grid; gap: 10px; }

/* Group headers for presenter/company */
.group-header {
  font-size: 14px; font-weight: 700;
  color: var(--navy);
  padding: 10px 4px;
  border-bottom: 2px solid var(--gold);
  margin-top: 18px; margin-bottom: 8px;
}
.group-header:first-child { margin-top: 4px; }

/* ============================================
   Session cards
============================================ */
.session-card {
  background: #fff;
  border-radius: 10px;
  padding: 14px 16px;
  border-left: 4px solid var(--type-presentation);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 14px;
  cursor: pointer;
  transition: transform .12s, box-shadow .15s;
  position: relative;
}
.session-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.session-card.type-workshop { border-left-color: var(--type-workshop); }
.session-card.type-reception { border-left-color: var(--type-reception); }
.session-card.type-keynote { border-left-color: var(--type-keynote); }
.session-card.type-panel { border-left-color: var(--type-panel); }
.session-card.type-in-person { border-left-color: var(--type-in-person); }
.session-card.client-day { border-left-color: var(--type-client-day); background: linear-gradient(90deg, #fdf8ee 0%, #ffffff 30%); }

.session-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.session-type-pill {
  background: var(--type-presentation-bg); color: var(--type-presentation);
  font-size: 10px; font-weight: 700; letter-spacing: .5px;
  text-transform: uppercase;
  padding: 3px 8px; border-radius: 4px;
}
.session-card.type-workshop .session-type-pill { background: var(--type-workshop-bg); color: var(--type-workshop); }
.session-card.type-reception .session-type-pill { background: var(--type-reception-bg); color: var(--type-reception); }
.session-card.type-keynote .session-type-pill { background: var(--type-keynote-bg); color: var(--type-keynote); }
.session-card.type-panel .session-type-pill { background: var(--type-panel-bg); color: var(--type-panel); }
.session-card.type-in-person .session-type-pill { background: var(--type-in-person-bg); color: var(--type-in-person); }
.session-card.client-day .session-type-pill { background: var(--type-client-day-bg); color: var(--gold-dark); }

.session-title {
  margin: 4px 0; color: var(--navy);
  font-size: 16px; font-weight: 700; line-height: 1.3;
}
.session-info {
  font-size: 13px; color: var(--muted);
  display: flex; flex-wrap: wrap; gap: 8px 14px;
}
.session-info span { display: inline-flex; align-items: center; gap: 4px; }
.session-presenter {
  font-size: 13px; color: var(--blue);
  font-weight: 600;
}

.session-star {
  background: #fff;
  border: 2px solid var(--border);
  width: 40px; height: 40px;
  border-radius: 50%;
  font-size: 22px; line-height: 1;
  color: var(--border);
  display: flex; align-items: center; justify-content: center;
  align-self: start;
  transition: all .15s;
  flex-shrink: 0;
}
.session-star:hover { border-color: var(--gold); color: var(--gold); }
.session-star.active {
  background: var(--gold); color: #fff;
  border-color: var(--gold);
  box-shadow: 0 2px 8px rgba(190,149,91,.35);
}

.attendance-badge {
  font-size: 11px; font-weight: 600;
  padding: 2px 8px; border-radius: 999px;
  background: var(--type-reception-bg);
  color: var(--blue);
}
.attendance-badge.in-person { background: var(--type-in-person-bg); color: var(--type-in-person); }

.session-rated {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; color: var(--gold-dark);
  background: var(--type-client-day-bg);
  padding: 3px 8px; border-radius: 999px;
}

/* ============================================
   Modal
============================================ */
.modal {
  position: fixed; inset: 0;
  display: none;
  z-index: 100;
}
.modal.open { display: block; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(0, 30, 60, 0.55);
  backdrop-filter: blur(2px);
}
.modal-content {
  position: relative;
  background: #fff;
  border-radius: 14px;
  max-width: 680px;
  width: calc(100% - 32px);
  max-height: 90vh;
  overflow-y: auto;
  margin: 5vh auto;
  padding: 24px 28px;
  box-shadow: var(--shadow-lg);
}
.modal-content.small { max-width: 440px; }
.modal-close {
  position: absolute; top: 12px; right: 12px;
  width: 36px; height: 36px;
  font-size: 24px; color: var(--muted);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.modal-close:hover { background: #f0f3f7; color: var(--navy); }

/* Session detail modal */
.detail-header {
  border-left: 4px solid var(--blue);
  padding-left: 14px;
  margin-bottom: 18px;
}
.detail-header.type-workshop { border-left-color: var(--type-workshop); }
.detail-header.type-reception { border-left-color: var(--type-reception); }
.detail-header.type-keynote { border-left-color: var(--type-keynote); }
.detail-header.type-panel { border-left-color: var(--type-panel); }
.detail-header.client-day { border-left-color: var(--type-client-day); }
.detail-header h2 {
  color: var(--navy); margin: 4px 0 8px;
  font-size: 22px; line-height: 1.25;
}
.detail-meta {
  display: flex; flex-wrap: wrap; gap: 10px 18px;
  font-size: 14px; color: var(--muted);
  margin-bottom: 12px;
}
.detail-meta strong { color: var(--navy); }

.detail-description {
  background: #f5f7fb;
  padding: 14px 16px;
  border-radius: 8px;
  margin-bottom: 18px;
  line-height: 1.55;
}
.detail-section { margin-bottom: 22px; }
.detail-section h3 {
  font-size: 14px; text-transform: uppercase; letter-spacing: .5px;
  color: var(--navy); margin: 0 0 10px;
}
.detail-actions {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.detail-actions button {
  flex: 1; min-width: 160px;
}

.attend-info {
  background: var(--type-presentation-bg);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: 14px;
}
.attend-info.in-person { background: var(--type-in-person-bg); }
.attend-info strong { color: var(--navy); display: block; margin-bottom: 4px; }
.attend-info .info-row {
  display: flex; gap: 8px; margin-top: 4px;
}
.attend-info a {
  color: var(--blue); font-weight: 600;
  text-decoration: none;
}
.attend-info a:hover { text-decoration: underline; }

.map-placeholder {
  margin-top: 10px;
  background: linear-gradient(135deg, var(--sky) 0%, var(--blue) 100%);
  color: #fff;
  border-radius: 8px;
  padding: 30px 16px;
  text-align: center;
  font-size: 13px;
}
.map-placeholder strong { display: block; font-size: 16px; margin-bottom: 4px; }
.map-placeholder small { opacity: .8; }

/* Presenter list */
.presenter-list { display: grid; gap: 14px; }
.presenter-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 14px; align-items: start;
  padding: 12px;
  background: #f8fafc;
  border-radius: 10px;
}
.presenter-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 22px;
  flex-shrink: 0; overflow: hidden;
}
.presenter-avatar img { width: 100%; height: 100%; object-fit: cover; }
.presenter-name { font-weight: 700; color: var(--navy); margin: 0 0 2px; }
.presenter-title { font-size: 13px; color: var(--muted); margin: 0 0 4px; }
.presenter-company {
  display: inline-block; font-size: 12px;
  background: var(--type-presentation-bg); color: var(--blue);
  padding: 2px 8px; border-radius: 4px; font-weight: 600;
  margin-bottom: 6px;
}
.presenter-company.sponsor {
  background: var(--type-client-day-bg); color: var(--gold-dark);
}
.presenter-bio { font-size: 13px; line-height: 1.5; color: var(--text); margin: 0; }
.presenter-extra { font-size: 12px; color: var(--muted); margin-top: 4px; }
.presenter-extra a { color: var(--blue); }
.presenter-fun {
  margin-top: 6px; font-size: 12px; font-style: italic;
  color: var(--gold-dark);
}

/* Star rating */
.star-rating {
  display: flex; gap: 4px; justify-content: center;
  margin: 18px 0;
}
.star-rating button {
  font-size: 36px;
  color: var(--border);
  transition: color .12s, transform .1s;
}
.star-rating button:hover { transform: scale(1.1); }
.star-rating button.active { color: var(--gold); }

/* Attendance options */
.attend-options {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; margin: 18px 0;
}
.attend-opt {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 22px 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  transition: all .12s;
}
.attend-opt:hover { border-color: var(--blue); background: var(--type-presentation-bg); }
.attend-opt strong { color: var(--navy); font-size: 15px; margin-top: 4px; }
.attend-opt .muted { font-size: 12px; }
.attend-icon { font-size: 30px; }

.attend-opt[disabled] { opacity: .5; cursor: not-allowed; }
.attend-opt[disabled]:hover { border-color: var(--border); background: transparent; }

/* Calendar action buttons (shown above email preview) */
.calendar-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin: 16px 0 22px;
}
.cal-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--navy);
  text-decoration: none;
  font-weight: 600; font-size: 14px;
  cursor: pointer;
  transition: transform .08s, box-shadow .15s, border-color .15s, background .12s;
  font-family: inherit;
  text-align: left;
}
.cal-btn:hover {
  border-color: var(--blue);
  background: var(--type-presentation-bg);
  box-shadow: var(--shadow);
}
.cal-btn:active { transform: scale(.98); }
.cal-btn .cal-ico {
  width: 30px; height: 30px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 6px;
  font-weight: 800;
  font-size: 14px;
}
.cal-btn.google .cal-ico  { background: #ea4335; color: #fff; }
.cal-btn.outlook .cal-ico { background: #0078d4; color: #fff; }
.cal-btn.ics .cal-ico     { background: var(--gold);  color: #fff; }

/* Email modal */
.email-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.email-from {
  background: #f5f7fb;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.email-from div { margin-bottom: 2px; }
.email-from strong { color: var(--navy); display: inline-block; min-width: 60px; }
.email-body-content { padding: 20px; line-height: 1.6; }
.email-body-content h3 { color: var(--navy); margin-top: 0; }
.email-button {
  display: inline-block;
  background: var(--navy); color: #fff;
  padding: 10px 18px; border-radius: 6px;
  text-decoration: none; font-weight: 600;
  margin: 10px 4px;
}

/* ============================================
   Admin
============================================ */
.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.admin-card {
  background: #fff;
  padding: 18px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.admin-card.full { grid-column: 1 / -1; }
.admin-card h3 {
  margin: 0 0 8px; color: var(--navy);
  font-size: 16px;
}
.muted { color: var(--muted); }

.admin-user-row, .stats-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.admin-user-row:last-child, .stats-row:last-child { border-bottom: none; }
.admin-user-row .role-pill { margin: 0; }
.stats-bar {
  position: relative;
  width: 120px; height: 8px;
  background: var(--border); border-radius: 4px;
  overflow: hidden;
}
.stats-bar-fill {
  position: absolute; top: 0; left: 0; bottom: 0;
  background: var(--gold);
  border-radius: 4px;
}
.stats-count { font-weight: 700; color: var(--navy); min-width: 30px; text-align: right; }

/* ============================================
   Sponsors (tiered)
============================================ */
.sponsors {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-top: 1px solid var(--border);
  padding: 36px 20px 24px;
  margin-top: 36px;
}
.sponsors > h3 {
  text-align: center;
  color: var(--navy); margin: 0 0 22px;
  font-size: 18px; letter-spacing: .5px;
}
#sponsor-grid {
  max-width: 1100px;
  margin: 0 auto 22px;
  display: flex; flex-direction: column; gap: 24px;
}

.sponsor-tier {
  text-align: center;
}
.sponsor-tier-label {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 18px;
  font-size: 11px;
  font-weight: 800; letter-spacing: 2px;
  text-transform: uppercase;
  border-radius: 999px;
  position: relative;
}
.sponsor-tier-platinum .sponsor-tier-label {
  background: linear-gradient(135deg, #e8eaee 0%, #c0c4ca 50%, #9aa0a8 100%);
  color: #1d2330;
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
}
.sponsor-tier-gold .sponsor-tier-label {
  background: linear-gradient(135deg, #f4d68a 0%, var(--gold) 50%, var(--gold-dark) 100%);
  color: #3a2c11;
}
.sponsor-tier-silver .sponsor-tier-label {
  background: linear-gradient(135deg, #f0f2f5 0%, #c8cdd4 50%, #a8aeb6 100%);
  color: #2a2f37;
}
.sponsor-tier-other .sponsor-tier-label {
  background: var(--type-presentation-bg);
  color: var(--blue);
  letter-spacing: 1.5px;
}

.sponsor-tier-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(calc(var(--logo-size) + 60px), 1fr));
  justify-items: center;
}
.sponsor-tier-platinum .sponsor-tier-grid,
.sponsor-tier-gold .sponsor-tier-grid {
  grid-template-columns: repeat(auto-fit, minmax(calc(var(--logo-size) + 100px), 220px));
  justify-content: center;
}

.sponsor-tile {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 14px 12px;
  text-align: center;
  text-decoration: none;
  color: var(--navy);
  transition: transform .15s, box-shadow .18s, border-color .15s;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  width: 100%; max-width: 220px;
}
.sponsor-tile:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 6px 20px rgba(0, 55, 100, 0.12);
}
.sponsor-tile.tier-platinum {
  border-width: 2px;
  border-color: #c0c4ca;
  background: linear-gradient(180deg, #ffffff 0%, #f8f9fb 100%);
}
.sponsor-tile.tier-platinum:hover { border-color: #9aa0a8; }
.sponsor-tile.tier-gold {
  border-width: 2px;
  border-color: var(--gold);
  background: linear-gradient(180deg, #ffffff 0%, #fdf8ee 100%);
}
.sponsor-tile.tier-gold:hover { border-color: var(--gold-dark); }
.sponsor-tile.tier-silver {
  border-color: #c8cdd4;
}

.sponsor-tile .sponsor-logo {
  width: var(--logo-size, 44px);
  height: var(--logo-size, 44px);
  display: flex; align-items: center; justify-content: center;
  background: #f5f7fb;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}
.sponsor-tile.tier-platinum .sponsor-logo,
.sponsor-tile.tier-gold .sponsor-logo {
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--border);
}
.sponsor-tile .sponsor-logo img {
  width: 85%; height: 85%; object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
}
.sponsor-tile .sponsor-fallback {
  font-weight: 800;
  color: var(--navy);
  font-size: calc(var(--logo-size, 44px) * 0.3);
  letter-spacing: -.5px;
}
.sponsor-name {
  font-size: 13px; color: var(--navy); font-weight: 700;
}
.sponsor-tile.tier-platinum .sponsor-name { font-size: 15px; }
.sponsor-tile.tier-gold .sponsor-name     { font-size: 14px; }
.sponsor-tile.tier-other .sponsor-name    { font-size: 12px; font-weight: 600; color: var(--muted); }

.footer-meta {
  text-align: center; font-size: 12px;
  color: var(--muted); margin: 22px 0 0;
}

/* ============================================
   Chatbot
============================================ */
.chatbot-panel {
  position: fixed;
  bottom: 20px; right: 20px;
  width: 380px; max-width: calc(100vw - 30px);
  height: 540px; max-height: calc(100vh - 100px);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0,30,60,.25);
  display: none;
  flex-direction: column;
  z-index: 90;
  overflow: hidden;
}
.chatbot-panel.open { display: flex; }
.chatbot-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  color: #fff;
  padding: 14px 16px;
  display: flex; justify-content: space-between; align-items: center;
}
.chatbot-title { display: flex; gap: 10px; align-items: center; }
.chatbot-avatar {
  width: 36px; height: 36px;
  background: var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.chatbot-title strong { display: block; font-size: 15px; }
.chatbot-title small { font-size: 11px; opacity: .85; }
.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex; flex-direction: column; gap: 10px;
  background: #f5f7fb;
}
.chat-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px; line-height: 1.45;
  word-wrap: break-word;
}
.chat-msg.bot {
  align-self: flex-start;
  background: #fff; color: var(--text);
  border-bottom-left-radius: 4px;
  box-shadow: var(--shadow);
}
.chat-msg.user {
  align-self: flex-end;
  background: var(--navy); color: #fff;
  border-bottom-right-radius: 4px;
}
.chat-msg .chat-action {
  display: block;
  margin-top: 8px;
  background: var(--gold); color: #fff;
  padding: 6px 12px; border-radius: 6px;
  font-size: 13px; font-weight: 600;
  text-decoration: none;
}
.chatbot-suggestions {
  padding: 8px 14px;
  display: flex; gap: 6px; flex-wrap: wrap;
  border-top: 1px solid var(--border);
}
.suggestion-chip {
  background: #fff; color: var(--blue);
  padding: 6px 10px;
  border-radius: 16px;
  font-size: 12px; font-weight: 600;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background .12s;
}
.suggestion-chip:hover { background: var(--type-presentation-bg); }

.chatbot-input {
  display: flex; gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  background: #fff;
}
.chatbot-input input {
  flex: 1; border-radius: 999px;
  padding: 10px 16px;
}
.chatbot-input button {
  width: 40px; height: 40px;
  background: var(--navy); color: #fff;
  border-radius: 50%;
  font-size: 18px; font-weight: 700;
}
.chatbot-input button:hover { background: var(--blue); }

.typing-indicator {
  display: inline-flex; gap: 3px;
}
.typing-indicator span {
  width: 6px; height: 6px;
  background: var(--muted); border-radius: 50%;
  animation: typing 1.2s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: .2s; }
.typing-indicator span:nth-child(3) { animation-delay: .4s; }
@keyframes typing {
  0%, 60%, 100% { opacity: .3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

/* ============================================
   Toast
============================================ */
.toast {
  position: fixed;
  bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--navy); color: #fff;
  padding: 12px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity .2s, transform .2s;
  pointer-events: none;
  z-index: 200;
  max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================
   Speaker Hub
============================================ */
.speaker-actions { margin-top: 18px; }
.speaker-actions button { max-width: 260px; }

/* ============================================
   Loader overlay
============================================ */
.loader-overlay {
  position: fixed; inset: 0;
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  color: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px;
  z-index: 9999;
  transition: opacity .3s;
}
.loader-overlay.hidden {
  opacity: 0; pointer-events: none;
}
.loader-spinner {
  width: 50px; height: 50px;
  border: 4px solid rgba(255,255,255,0.18);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-overlay p { margin: 0; font-size: 14px; opacity: 0.85; }

/* ============================================
   Responsive
============================================ */
@media (max-width: 640px) {
  .app-header { padding: 10px 14px; }
  .header-left h1 { font-size: 15px; }
  .header-sub { font-size: 11px; }
  .top-tabs { top: 60px; padding: 8px 10px 0; }
  .top-tab { padding: 8px 14px; font-size: 13px; }
  .view-bar { padding: 10px 14px; gap: 10px; }
  .legend { font-size: 11px; gap: 10px; }
  .content-section { padding: 12px 14px 60px; }
  .session-card { padding: 12px; grid-template-columns: 1fr auto; }
  .session-title { font-size: 15px; }
  .modal-content { padding: 18px 18px; margin: 2vh auto; max-height: 96vh; }
  .admin-grid { grid-template-columns: 1fr; }
  .attend-options { grid-template-columns: 1fr; }
  .chatbot-panel {
    bottom: 0; right: 0;
    width: 100vw; height: 80vh; max-height: 80vh;
    border-radius: 16px 16px 0 0;
  }
  .auth-card { padding: 24px 20px; }
  .auth-logo img { max-width: 220px; }
}