:root {
  --ecf-bg: #f4efe6;
  --ecf-card: #fffdf8;
  --ecf-text: #2a2825;
  --ecf-muted: #676158;
  --ecf-accent: #98784a;
  --ecf-danger: #8f2f26;
  --ecf-border: #d9ceb9;
}

.ecf-page { padding: 28px 14px 48px; }
.ecf-shell { max-width: 980px; margin: 0 auto; background: var(--ecf-bg); border: 1px solid var(--ecf-border); border-radius: 18px; padding: 18px; box-shadow: 0 8px 24px rgba(0,0,0,.06); }
.ecf-panel { background: var(--ecf-card); border: 1px solid var(--ecf-border); border-radius: 16px; padding: 18px; }
.ecf-title { margin: 0; font: 700 30px/1.1 Poppins,sans-serif; color: var(--ecf-text); }
.ecf-subtitle { margin: 8px 0 0; color: var(--ecf-muted); font: 600 15px/1.5 Nunito,sans-serif; }
.ecf-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.ecf-btn { border: 1px solid var(--ecf-accent); background: var(--ecf-accent); color: #fff; border-radius: 10px; padding: 12px 14px; font: 700 14px/1 Poppins,sans-serif; cursor: pointer; min-height: 44px; }
.ecf-btn.secondary { background: #fff; color: var(--ecf-text); border-color: var(--ecf-border); }
.ecf-btn:focus-visible, .slot-btn:focus-visible, .tile-btn:focus-visible, .file-btn:focus-visible { outline: 3px solid #1d4ed8; outline-offset: 2px; }

.ecf-statline { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }
.ecf-pill { border: 1px solid var(--ecf-border); border-radius: 999px; padding: 8px 10px; font: 700 12px/1 Poppins,sans-serif; color: var(--ecf-text); background: #fff; }

.topbar { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 10px; margin-bottom: 12px; }
.top-item { background: var(--ecf-card); border: 1px solid var(--ecf-border); border-radius: 12px; padding: 10px; font: 700 12px/1.3 Poppins,sans-serif; color: var(--ecf-text); }
.integrity-wrap { margin-top: 5px; height: 7px; border-radius: 999px; background: #ddd5c8; overflow: hidden; }
.integrity-bar { height: 100%; background: linear-gradient(90deg,#9f8a63,#7b5f35); width: 100%; transition: width .25s ease; }

.case-card, .evidence-card, .controls-card { background: var(--ecf-card); border: 1px solid var(--ecf-border); border-radius: 12px; padding: 14px; margin-top: 12px; }
.case-heading { font: 700 12px/1 Poppins,sans-serif; color: var(--ecf-accent); letter-spacing: .08em; }
.case-title { margin: 8px 0 4px; font: 700 24px/1.2 Poppins,sans-serif; color: var(--ecf-text); }
.case-category { margin: 0; color: var(--ecf-muted); font: 600 14px/1.4 Nunito,sans-serif; }
.slot-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.slot-btn { border: 1px dashed #b8aa91; border-radius: 10px; background: #fff; color: var(--ecf-text); min-height: 48px; min-width: 82px; padding: 10px; font: 700 14px/1 Poppins,sans-serif; cursor: pointer; }
.slot-btn.active { border-style: solid; border-color: var(--ecf-accent); box-shadow: inset 0 0 0 1px var(--ecf-accent); }
.slot-btn.locked { background: #ece4d6; border-style: solid; cursor: default; }
.slot-btn.shake, .tile-btn.shake { animation: shake .25s linear 2; }
@keyframes shake { 0%{transform:translateX(0);} 25%{transform:translateX(-2px);} 75%{transform:translateX(2px);} 100%{transform:translateX(0);} }

.evidence-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.tile-btn { min-width: 62px; min-height: 56px; border-radius: 12px; border: 1px solid var(--ecf-border); background: #fff; font-size: 26px; cursor: pointer; }

.controls-card { display: flex; flex-wrap: wrap; gap: 10px; position: sticky; bottom: 10px; }
.helper { margin-top: 10px; font: 700 13px/1.4 Nunito,sans-serif; color: var(--ecf-danger); min-height: 20px; }
.file-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 12px; margin-top: 14px; }
.file-btn { text-align: left; border: 1px solid var(--ecf-border); border-radius: 12px; background: #fff; padding: 14px; cursor: pointer; min-height: 120px; }
.file-btn.locked { opacity: .65; cursor: not-allowed; }

.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); display: grid; place-items: center; padding: 14px; }
.overlay-card { background: #fffdf8; border: 1px solid var(--ecf-border); border-radius: 14px; max-width: 460px; width: 100%; padding: 20px; text-align: center; }
.stamp { display: inline-block; border: 3px solid #8f6a35; color: #8f6a35; padding: 8px 14px; font: 700 22px/1 Poppins,sans-serif; transform: scale(.5) rotate(-8deg); opacity: 0; animation: stampIn .45s ease forwards; margin-bottom: 8px; }
@keyframes stampIn { to { transform: scale(1) rotate(-8deg); opacity: 1; } }

.ecf-faq { max-width: 980px; margin: 16px auto 0; padding: 18px; border: 1px solid #e2e8f0; border-radius: 14px; background: #fff; }
.ecf-faq h2 { margin: 0 0 10px; font: 700 20px/1.2 Poppins,sans-serif; }
.ecf-faq details { border-top: 1px solid #e2e8f0; padding: 10px 0; }
.ecf-faq summary { cursor: pointer; font: 700 14px/1.4 Poppins,sans-serif; }

@media (max-width: 760px) {
  .topbar { grid-template-columns: 1fr; }
  .case-title { font-size: 20px; }
  .tile-btn { min-width: 56px; }
}