:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e4e7ec;
  --text: #1a202c;
  --muted: #6b7280;
  --accent: #2563eb;
  --pass: #16a34a;
  --fail: #dc2626;
  --pending: #6b7280;
  --blocked: #d97706;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.1);
  --radius: 10px;
}

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

.muted { color: var(--muted); }
button { font: inherit; cursor: pointer; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand strong { font-size: 18px; }
.actions button {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  margin-left: 8px;
  font-weight: 500;
}
.actions button:hover { background: #eef2ff; border-color: var(--accent); color: var(--accent); }

/* Summary */
.summary {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding: 12px 24px; background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.summary .pill {
  background: #f1f5f9; padding: 4px 10px; border-radius: 999px;
  font-weight: 500;
}
.summary .pill.pass { background: #dcfce7; color: var(--pass); }
.summary .pill.fail { background: #fee2e2; color: var(--fail); }
.summary .pill.blocked { background: #fef3c7; color: var(--blocked); }
.summary .pill.pending { background: #f1f5f9; color: var(--pending); }

/* Filters */
.filters {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 14px 24px; background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.device-tabs { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.device-tabs button {
  padding: 8px 14px; background: var(--surface); border: 0;
  border-right: 1px solid var(--border); font-weight: 600; color: var(--muted);
}
.device-tabs button:last-child { border-right: 0; }
.device-tabs button.active { background: var(--accent); color: #fff; }

.promo-tabs { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.promo-tabs button {
  padding: 8px 14px; background: var(--surface); border: 0;
  border-right: 1px solid var(--border); font-weight: 600; color: var(--muted);
}
.promo-tabs button:last-child { border-right: 0; }
.promo-tabs button.active { background: #fb923c; color: #fff; }

.loai-tabs { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.loai-tabs button {
  padding: 8px 14px; background: var(--surface); border: 0;
  border-right: 1px solid var(--border); font-weight: 600; color: var(--muted);
}
.loai-tabs button:last-child { border-right: 0; }
.loai-tabs button.active { background: #16a34a; color: #fff; }

.filters select, .filters input[type="search"] {
  padding: 8px 10px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface); min-width: 180px;
}
.filters input[type="search"] { min-width: 240px; }
.filters .counter { margin-left: auto; color: var(--muted); font-size: 13px; }

/* Grid */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 16px;
  padding: 20px 24px 60px;
}

.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
  display: flex; flex-direction: column;
  border-left: 4px solid var(--pending);
  transition: border-color 120ms ease;
}
.case-card.status-PASS { border-left-color: var(--pass); }
.case-card.status-FAIL { border-left-color: var(--fail); }
.case-card.status-BLOCKED { border-left-color: var(--blocked); }
.case-card.status-PENDING { border-left-color: var(--pending); }

.case-head { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.case-no { font-weight: 700; color: var(--text); background: #eef2ff; padding: 2px 8px; border-radius: 6px; }
.case-promo { padding: 2px 8px; background: #f1f5f9; border-radius: 6px; }
.case-status-pill {
  margin-left: auto; padding: 2px 10px; border-radius: 999px;
  font-weight: 600; font-size: 11px; letter-spacing: 0.3px;
}
.case-status-pill.PASS { background: #dcfce7; color: var(--pass); }
.case-status-pill.FAIL { background: #fee2e2; color: var(--fail); }
.case-status-pill.BLOCKED { background: #fef3c7; color: var(--blocked); }
.case-status-pill.PENDING { background: #f1f5f9; color: var(--pending); }

.case-name { font-size: 15px; margin: 8px 0 4px; }
.case-criteria { font-size: 12px; margin: 0 0 10px; }

.sample-hint {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  padding: 8px 10px;
  margin: 0 0 10px;
  font-size: 12.5px;
  color: #7c2d12;
}
.sample-hint .sample-label {
  display: inline-block;
  background: #fb923c;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 6px;
}
.sample-hint .sample-row { line-height: 1.45; }
.sample-hint strong { color: #9a3412; }

.status-row { display: flex; align-items: center; gap: 10px; margin: 4px 0 6px; font-size: 13px; }
.status-row select { padding: 4px 6px; border: 1px solid var(--border); border-radius: 6px; }
.updated-at { font-size: 11px; }

.note-input {
  width: 100%; min-height: 56px; resize: vertical;
  border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 8px; font-family: inherit; font-size: 13px;
}

.evidence-block { margin-top: 10px; display: flex; flex-direction: column; gap: 12px; }
.evidence-section { border: 1px dashed var(--border); border-radius: 8px; padding: 8px; outline: none; transition: border-color 120ms, background 120ms; }
.evidence-section:focus, .evidence-section.focused {
  border-color: var(--accent); border-style: solid; background: #eef6ff;
}
.evidence-head { display: flex; align-items: center; justify-content: space-between; font-size: 13px; }
.head-actions { display: inline-flex; align-items: center; gap: 6px; }
.paste-hint {
  font-size: 11px; color: var(--muted); background: #f1f5f9;
  padding: 2px 6px; border-radius: 4px; user-select: none;
}
.evidence-section.focused .paste-hint { background: #dbeafe; color: var(--accent); }
.upload-btn {
  background: #eef2ff; color: var(--accent); border-radius: 6px;
  padding: 4px 10px; cursor: pointer; font-size: 12px; font-weight: 600;
  border: 1px solid #dbeafe;
}
.upload-btn:hover { background: #dbeafe; }

.thumb-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.thumb {
  position: relative; width: 96px; height: 72px; border-radius: 6px;
  overflow: hidden; border: 1px solid var(--border); background: #f1f5f9;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; cursor: zoom-in; }
.thumb .del {
  position: absolute; top: 2px; right: 2px;
  background: rgba(0, 0, 0, 0.6); color: #fff; border: 0;
  border-radius: 4px; padding: 0 6px; font-size: 11px;
  opacity: 0; transition: opacity 100ms;
}
.thumb:hover .del { opacity: 1; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; background: rgba(0,0,0,0.85);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.lightbox.hidden { display: none; }
.lightbox img { max-width: 92vw; max-height: 92vh; box-shadow: 0 0 32px rgba(0,0,0,0.5); }
.lb-close {
  position: absolute; top: 14px; right: 24px; color: #fff;
  font-size: 32px; cursor: pointer; font-weight: 200;
}

/* ALL view: device mini-cards */
.case-card.all-view { border-left-color: var(--accent); }
.all-devices-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 10px;
}
.device-mini-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--pending);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit; text-align: left;
  cursor: pointer;
  transition: border-color 120ms, background 120ms;
}
.device-mini-card:hover { background: #eef2ff; }
.device-mini-card.status-PASS { border-left-color: var(--pass); }
.device-mini-card.status-FAIL { border-left-color: var(--fail); }
.device-mini-card.status-BLOCKED { border-left-color: var(--blocked); }
.device-mini-card.status-PENDING { border-left-color: var(--pending); }
.device-mini-card strong { font-size: 12px; letter-spacing: 0.3px; }
.device-mini-card .status-pill {
  display: inline-block;
  font-size: 10.5px; font-weight: 700; padding: 2px 8px;
  border-radius: 999px;
}
.device-mini-card .status-pill.PASS { background: #dcfce7; color: var(--pass); }
.device-mini-card .status-pill.FAIL { background: #fee2e2; color: var(--fail); }
.device-mini-card .status-pill.BLOCKED { background: #fef3c7; color: var(--blocked); }
.device-mini-card .status-pill.PENDING { background: #f1f5f9; color: var(--pending); }
.device-mini-card .img-count { font-size: 11px; color: var(--muted); }

/* Drag-over highlight */
.evidence-section.dragover { border-color: var(--accent); background: #eef2ff; }

/* Toast */
.toast {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%);
  background: #111827; color: #fff; padding: 8px 16px; border-radius: 8px;
  font-size: 13px; box-shadow: var(--shadow); z-index: 200;
  opacity: 0; transition: opacity 200ms, transform 200ms;
}
.toast.show { opacity: 1; transform: translate(-50%, -6px); }