:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --ink: #1f2937;
    --muted: #6b7280;
    --primary: #0e639c;
    --primary-dark: #0b4f7c;
    --border: #e2e8f0;
    --danger: #b91c1c;
    --ok: #15803d;
    --warn: #b45309;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Topbar */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--primary);
    color: #fff;
    padding: 0.75rem 1.25rem;
}
.brand { font-weight: 700; font-size: 1.1rem; }
.mainnav { display: flex; align-items: center; gap: 1rem; }
.mainnav a { color: #fff; opacity: 0.9; }
.mainnav a:hover { opacity: 1; }

.container { max-width: 1000px; margin: 1.5rem auto; padding: 0 1rem; }
.site-footer { text-align: center; color: var(--muted); padding: 2rem 0; font-size: 0.85rem; }

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
}
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.card.stat { display: flex; flex-direction: column; text-align: center; }
.stat-num { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-label { color: var(--muted); font-size: 0.9rem; }

h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.75rem; }

.page-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.page-actions { display: flex; gap: 0.5rem; }

/* Forms */
.form label, .auth-card label { display: block; margin-bottom: 1rem; font-weight: 600; }
.form input[type=text], .form input[type=email], .form input[type=password], .form input[type=number],
.auth-card input { width: 100%; padding: 0.55rem 0.7rem; border: 1px solid var(--border); border-radius: 6px; font-size: 1rem; font-weight: 400; }
.form-inline, .search { display: flex; align-items: flex-end; gap: 0.75rem; flex-wrap: wrap; }
.form-inline label { font-weight: 600; display: flex; flex-direction: column; gap: 0.25rem; }
.form-inline input { padding: 0.5rem 0.7rem; border: 1px solid var(--border); border-radius: 6px; }
.checkbox { font-weight: 400 !important; }
.checkbox input { width: auto !important; margin-right: 0.4rem; }
.field-error { display: block; color: var(--danger); font-weight: 400; font-size: 0.85rem; margin-top: 0.25rem; }

/* Buttons */
.btn {
    display: inline-block; cursor: pointer; border: 1px solid var(--border);
    background: #fff; color: var(--ink); padding: 0.5rem 0.9rem; border-radius: 6px;
    font-size: 0.95rem; text-decoration: none; line-height: 1.2;
}
.btn:hover { background: #f1f5f9; text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.85rem; }
.btn-link { background: none; border: none; color: var(--primary); padding: 0.5rem 0.2rem; cursor: pointer; }
.mainnav .btn-link { color: #fff; opacity: 0.9; font: inherit; }
.mainnav .btn-link:hover { opacity: 1; text-decoration: underline; }
.btn[disabled] { opacity: 0.6; cursor: default; }
.inline-form { display: inline; }

/* Tables */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--border); }
.table th { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); }
.col-actions { white-space: nowrap; }
.muted { color: var(--muted); font-size: 0.9rem; }

/* Flash + badges */
.flash { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.flash-success { background: #ecfdf5; color: var(--ok); border: 1px solid #a7f3d0; }
.flash-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }

.badge { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.8rem; font-weight: 600; }
.badge-pending, .badge-scanned { background: #e0f2fe; color: #075985; }
.badge-sent, .badge-done { background: #dcfce7; color: var(--ok); }
.badge-failed { background: #fee2e2; color: var(--danger); }
.badge-skipped { background: #f1f5f9; color: var(--muted); }
.badge-unmatched { background: #fef3c7; color: var(--warn); }
.badge-invalid { background: #fde2e2; color: #9f1239; }
.badge-sending { background: #ede9fe; color: #6d28d9; }
.counts { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }

/* Row tinting */
.row-failed td { background: #fff7f7; }
.row-unmatched td, .row-invalid td { background: #fffbeb; }
.row-sent td { background: #f7fdf9; }

/* Send progress */
.send-controls { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.progress { background: var(--border); border-radius: 999px; overflow: hidden; height: 22px; margin-top: 1rem; }
.progress-bar { background: var(--primary); color: #fff; text-align: center; font-size: 0.8rem; line-height: 22px; width: 0; transition: width 0.3s ease; }
.send-status { margin-top: 0.5rem; color: var(--muted); }
.hidden { display: none; }

/* Auth */
.auth-card { max-width: 360px; margin: 4rem auto; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 2rem; }
.auth-card h1 { text-align: center; }
.auth-card button { width: 100%; margin-top: 0.5rem; }

.error-list { color: var(--danger); }
.hint pre, pre { background: #f8fafc; border: 1px solid var(--border); padding: 0.75rem; border-radius: 6px; overflow-x: auto; }
code { background: #f1f5f9; padding: 0.1rem 0.35rem; border-radius: 4px; }