:root{
  --ecd-brand-color:#E60000;--ecd-brand-color-light:rgba(230,0,0,.12);--ecd-brand-color-dark:#C00000;
  --ecd-background-color:#FFFFFF;--ecd-surface-color:#F9FAFB;--ecd-text-color:#111827;--ecd-text-muted-color:#6B7280;
  --ecd-border-color:#E5E7EB;--ecd-success-color:#10B981;--ecd-error-color:#EF4444;
}
.ecd-container,.ecd-container *{box-sizing:border-box}
.ecd-container{font-family:'Poppins',sans-serif;color:var(--ecd-text-color);background:transparent;max-width:800px;margin:2rem auto;padding:1rem}
.ecd-card{background:var(--ecd-background-color);border:1px solid var(--ecd-border-color)!important;border-radius:16px;box-shadow:0 10px 25px -5px rgba(0,0,0,.07),0 4px 6px -2px rgba(0,0,0,.05);overflow:hidden}
.ecd-head{padding:1.25rem 1.5rem;border-bottom:1px solid var(--ecd-border-color)!important;display:flex;align-items:center;gap:.75rem;background:var(--ecd-background-color)}
.ecd-title{font-weight:600;font-size:clamp(1.25rem,4vw,1.5rem);line-height:1.2;margin:0}
.ecd-body{padding:1.5rem;background:var(--ecd-background-color)}
.form-group label{display:block;font-size:.875rem;font-weight:600;color:var(--ecd-text-muted-color);margin:0 0 .5rem}
.ecd-input,.ecd-select{-webkit-appearance:none;appearance:none;display:block;width:100%;padding:.75rem 1rem;border:1px solid var(--ecd-border-color)!important;border-radius:12px;outline:none;font-size:1rem;font-family:'Poppins',sans-serif;background:var(--ecd-background-color);color:var(--ecd-text-color);transition:border-color .2s,box-shadow .2s}
.ecd-select{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");background-position:right .6rem center;background-repeat:no-repeat;background-size:1.25em 1.25em;padding-right:2.25rem}
.ecd-input:focus,.ecd-select:focus{border-color:var(--ecd-brand-color)!important;box-shadow:0 0 0 3px var(--ecd-brand-color-light)}
.ecd-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.25rem;border-radius:12px;border:1px solid transparent;font-weight:600;cursor:pointer;transition:all .2s;text-align:center;line-height:1.2;font-family:'Poppins',sans-serif}
.ecd-btn.ecd-primary{background:var(--ecd-brand-color);color:#fff;box-shadow:0 4px 12px rgba(230,0,0,.2)}
.ecd-btn.ecd-primary:hover{background:var(--ecd-brand-color-dark);transform:translateY(-2px);box-shadow:0 8px 16px rgba(230,0,0,.25)}
.ecd-btn.ecd-secondary{background:var(--ecd-background-color);color:var(--ecd-brand-color);border-color:var(--ecd-border-color)!important;border-style:solid}
.ecd-btn.ecd-secondary:hover{background:var(--ecd-surface-color);border-color:var(--ecd-brand-color)!important}
.setup-grid{display:grid;gap:1.25rem;grid-template-columns:2fr 1fr 1fr}
.grid-span-all{grid-column:1 / -1}
.tz-row{display:grid;grid-template-columns:1fr auto;gap:.75rem;align-items:center}
.controls{display:flex;gap:1rem;justify-content:center;margin-top:1.5rem}
.timer{text-align:center;overflow:hidden;max-height:0;opacity:0;margin-top:0;transition:max-height .7s ease-out,margin-top .7s ease-out,opacity .5s ease-out;content-visibility:auto;contain-intrinsic-size:300px}
.timer.visible{max-height:500px;opacity:1;margin-top:2rem}
.timer-title{font-size:1.5rem;font-weight:600;margin:0 0 1.5rem}
.digits{display:grid;gap:1rem;grid-template-columns:repeat(4,1fr)}
.digit{background:var(--ecd-surface-color);border:1px solid var(--ecd-border-color)!important;border-radius:12px;padding:1rem .5rem}
.digit h3{margin:0;font-size:clamp(2.5rem,6vw,3.5rem);line-height:1;font-weight:700;color:var(--ecd-brand-color)}
.digit span{font-size:.875rem;color:var(--ecd-text-muted-color);font-weight:600;margin-top:.5rem;display:block}
.share-actions{margin-top:1.5rem;display:flex;justify-content:center;gap:.75rem;flex-wrap:wrap}
.hint{font-size:.8rem;color:var(--ecd-text-muted-color);margin-top:.5rem;text-align:center}
.sound-controls{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;align-items:center;margin-top:1.25rem}
.sound-options{display:flex;flex-direction:column;gap:.5rem}
.volume-control{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}
.volume-control input[type="range"]{flex-grow:1}
.toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%,100%);background:var(--ecd-text-color);color:#fff;padding:.75rem 1.25rem;border-radius:10px;font-size:.9rem;font-weight:600;box-shadow:0 10px 20px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:transform .3s,opacity .3s;z-index:9999}
.toast.show{opacity:1;transform:translate(-50%,0)}
#error-box{color:var(--ecd-error-color);font-weight:600;text-align:center;margin-top:1rem;min-height:1.5rem}
.sound-gate{position:fixed;inset:0;background:rgba(0,0,0,.55);display:none;align-items:center;justify-content:center;z-index:9998}
.sound-gate .gate-card{background:#fff;border-radius:14px;padding:20px 22px;max-width:420px;box-shadow:0 10px 30px rgba(0,0,0,.25);text-align:center}
.sound-gate .gate-title{margin:0 0 8px;font-weight:700}
.sound-gate .gate-text{color:#4b5563;margin:0 0 14px}
@media (prefers-reduced-motion:reduce){.ecd-btn,.toast,.timer{transition:none}.ecd-btn.ecd-primary:hover{transform:none}}
@media (max-width:768px){.setup-grid{grid-template-columns:1fr 1fr}.digits{gap:.75rem}}
@media (max-width:600px){.ecd-body{padding:1rem}.setup-grid,.sound-controls{grid-template-columns:1fr}.controls{flex-direction:column}.ecd-btn{width:100%}.digits{grid-template-columns:repeat(2,1fr)}}