*{box-sizing:border-box}
:root{
  --warm-50:#fffaf0;--warm-100:#feebc8;--warm-200:#fbd38d;--warm-300:#f6ad55;
  --warm-400:#ed8936;--warm-500:#dd6b20;--warm-600:#c05621;
  --ink:#2d3748;--muted:#718096;--line:#edf2f7;--card:#ffffff;
}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;
  background:radial-gradient(1200px 400px at -10% -10%,var(--warm-50),transparent 60%),
             radial-gradient(900px 400px at 110% -20%,var(--warm-100),transparent 60%),
             linear-gradient(180deg,var(--warm-50) 0%,#fff 100%);
  color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1{font-size:26px;margin:0 0 6px;color:#c05621}
.subtitle{margin:0;color:#dd6b20}
h2{font-size:18px;margin:16px 0 8px;color:#c05621}
h3{font-size:14px;margin:12px 0 8px;color:#718096}
.step-badge{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;margin-right:8px;background:var(--warm-500);color:#fff;border-radius:50%;font-size:14px;font-weight:700}
.desc{margin:0 0 12px;color:var(--ink);font-size:14px;line-height:1.5}
.container{max-width:960px;margin:24px auto;padding:16px}
.hero{display:flex;align-items:center;justify-content:space-between;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:12px 16px;box-shadow:0 6px 20px rgba(237,137,54,.08)}
.hero-text{display:flex;flex-direction:column;gap:4px}
.hero-art{opacity:.95}
@media (max-width:700px){.hero{flex-direction:column;gap:6px}}
.toolbar{display:flex;gap:12px;margin:8px 0 16px}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}
@media (max-width: 900px){.grid{grid-template-columns:1fr}}
.role-btn{padding:10px 14px;border:1px solid var(--rose-200);background:var(--rose-100);color:#9f1239;border-radius:999px;cursor:pointer}
.role-btn.secondary{background:var(--rose-50);color:#b91c1c;border-color:#fecaca}
.role-btn:hover{background:#ffdfe3}
.panel{border:1px solid var(--line);background:var(--card);border-radius:16px;padding:16px;box-shadow:0 6px 20px rgba(190,24,93,.08)}
.hidden{display:none}
.controls{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.primary{background:var(--rose-600);border:1px solid #be123c}
.danger{background:#b91c1c;border:1px solid #991b1b}
.primary,.danger{color:#fff;border-radius:999px;padding:8px 14px;cursor:pointer}
.checkbox{display:flex;align-items:center;gap:8px;color:var(--ink)}
.section{margin-top:14px}
.mono{width:100%;min-height:96px;background:var(--card);border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}
.actions{display:flex;gap:8px;align-items:center;margin-top:8px}
.small{font-size:13px;padding:6px 10px}
.tip{font-size:12px;color:var(--muted)}
.preview{margin-top:16px}
video{width:100%;height:auto;max-height:85vh;background:#000;border-radius:12px;border:2px solid var(--rose-200);image-rendering:auto;object-fit:contain}
.video-box{position:relative;width:100%}
.tap-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.25);border-radius:12px}
.tap-overlay.hidden{display:none}
.text{width:100%;padding:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px}
.smallarea{min-height:64px}
.net-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin-top:8px}
.modal{position:fixed;inset:0;background:rgba(190,24,93,.12);display:flex;align-items:center;justify-content:center;z-index:50}
.modal.hidden{display:none}
.modal-box{width:min(92vw,560px);background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 32px rgba(190,24,93,.12)}
.modal-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid #ffe4e6}
.modal-body{padding:12px;display:flex;flex-direction:column;align-items:center;gap:12px}
.modal-tip{font-size:12px;color:var(--muted)}
.senior body,.senior{font-size:18px}
.senior .role-btn{padding:14px 18px;font-size:18px}
.senior .mono{min-height:140px;font-size:18px}
.senior .small{font-size:16px;padding:10px 14px}
.senior h1{font-size:28px}
.senior h2{font-size:22px}
.senior h3{font-size:18px}
.senior .checkbox{font-size:18px}
.locked .advanced-control{display:none}
.simple .modal-tip,.simple .tip{font-size:14px}
.viewer-only #sharer-panel{display:none}
.viewer-only.viewer-receive-only .return-section{display:none}
.wizard{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(255,240,245,.8);z-index:60}
.wizard.hidden{display:none}
.wizard-box{width:min(92vw,520px);background:#fff;border:1px solid #fed7d7;border-radius:16px;box-shadow:0 10px 32px rgba(190,24,93,.12);padding:20px;text-align:center}
.wizard-input{margin:12px 0;font-size:18px}
.wizard-btn{font-size:18px;padding:12px 18px;border-radius:999px}
.wizard-tip{color:#a0aec0;font-size:14px;margin-top:8px}

/* New Styles */
.big-btn {
  font-size: 16px;
  padding: 12px 24px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(225, 29, 72, 0.2);
  transition: all 0.2s;
}
.big-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(225, 29, 72, 0.3);
}
.big-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.settings-panel {
  border: 1px solid var(--rose-200);
  border-radius: 12px;
  background: var(--rose-50);
  overflow: hidden;
}
.settings-panel summary {
  padding: 12px 16px;
  cursor: pointer;
  font-weight: 500;
  color: var(--rose-600);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.settings-panel summary::after {
  content: '+';
  font-size: 18px;
  font-weight: 300;
}
.settings-panel[open] summary::after {
  content: '-';
}
.settings-content {
  padding: 16px;
  border-top: 1px solid var(--rose-200);
  background: #fff;
  display: grid;
  gap: 20px;
}
.setting-group h4 {
  margin: 0 0 8px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}
.setting-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.invite-section {
  background: var(--rose-50);
  border: 1px dashed var(--rose-300);
  border-radius: 12px;
  padding: 16px;
}
.invite-section h3 {
  margin-top: 0;
  color: var(--rose-600);
}
.invite-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}
.invite-actions {
  display: flex;
  gap: 8px;
}
.invite-actions .text {
  flex: 1;
}

@media (min-width: 900px) {
  .container {
    padding: 32px;
  }
  .grid {
    gap: 32px;
  }
  .panel {
    padding: 24px;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .panel:hover {
    box-shadow: 0 12px 30px rgba(190,24,93,.12);
  }
  .big-btn {
    font-size: 18px;
    padding: 14px 32px;
  }
  h1 {
    font-size: 36px;
  }
}

.controls {
  margin-top: 16px;
  padding: 16px;
  background: var(--rose-50);
  border-radius: 12px;
  border: 1px solid var(--rose-100);
}

.settings-panel summary:hover {
  background: var(--rose-100);
}

.video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 240px;
  background: #f8fafc;
  color: #94a3b8;
  border-radius: 12px;
  border: 2px dashed #e2e8f0;
  margin-bottom: 16px;
}

.manual-content {
  margin-top: 16px;
  border-top: 1px solid var(--rose-200);
  padding-top: 12px;
}
.manual-mode summary {
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  width: fit-content;
}

@media (min-width: 600px) {
  .invite-box {
    flex-direction: row;
    align-items: center;
  }
  .invite-box input {
    width: auto;
    flex: 1;
  }
}