html {
    font-size: 13px;
}

:root {
    --font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-size-base: 13px;
    --primary: #1b6ec2;
    --primary-dark: #1861ac;
    --primary-contrast: #ffffff;
    --surface: #ffffff;
    --muted: #94a3b8;
    --danger: #e50000;
    --success: #26b050;
    --action-bg: rgba(247, 249, 252, 0.95);
    --card-radius: 12px;
}

html { font-size: var(--font-size-base); }

html, body { font-family: var(--font-family); }

a, .btn-link {
    color: var(--primary);
}

.btn-primary {
    color: var(--primary-contrast);
    background-color: var(--primary);
    border-color: var(--primary-dark);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem var(--surface), 0 0 0 0.25rem rgba(37,140,251,0.25);
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) { outline: 1px solid var(--success); }
.invalid { outline: 1px solid var(--danger); }
.validation-message { color: var(--danger); }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDgNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

.action-bar-fixed {
    position: fixed;
    top: 4.2rem;
    right: 1.25rem;
    z-index: 1100;
    background: rgba(247, 249, 252, 0.95);
    backdrop-filter: blur(8px);
    padding: .6rem;
    border-radius: 12px;
    border: 1px solid #e5eaf1;
    box-shadow: 0 8px 18px rgba(16, 24, 40, 0.12);
}

.modern-btn-primary {
    color: #ffffff;
    background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
    border: 1px solid #0f172a;
    border-radius: 12px;
    padding: .55rem 1rem;
    font-weight: 600;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.28);
    transition: all .2s ease;
}

.modern-btn-primary:hover {
    color: #ffffff;
    background: linear-gradient(180deg, #111827 0%, #0b1220 100%);
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(15, 23, 42, 0.35);
}

.modern-btn-secondary {
    color: #111827;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    padding: .55rem 1rem;
    font-weight: 600;
    transition: all .2s ease;
}

.modern-btn-secondary:hover {
    color: #0f172a;
    background: #f8fafc;
    border-color: #94a3b8;
}

.modern-btn-primary:disabled,
.modern-btn-secondary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.login-card {
    border-radius: 14px;
}

.login-card-body {
    padding: 2rem 2rem 2.2rem;
}

.serial-port-group .form-select,
.serial-port-group .serial-refresh-btn {
    height: calc(2.25rem + 2px);
}

.serial-port-group .serial-refresh-btn {
    min-width: 64px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Drag-and-drop reorder styles */
.drag-handle-cell { vertical-align: middle; }
.drag-over { background-color: #eef2ff; }
.dragging { opacity: 0.6; }

/* Row action buttons: hidden by default, show on row hover */
#dataItemsBody tr .row-actions { opacity: 0; transform: translateY(4px); transition: opacity .12s ease, transform .12s ease; pointer-events: none; }
#dataItemsBody tr:hover .row-actions { opacity: 1; transform: translateY(0); pointer-events: auto; }
#dataItemsBody tr .row-actions .btn { padding: .28rem .45rem; min-width: 34px; display:inline-flex; align-items:center; justify-content:center; }