h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

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

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

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

/* ===== Admin shell — dark sidebar SaaS ===== */
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.ckg-appbar {
    border-bottom: 1px solid var(--mud-palette-lines-default);
}

/* Brand trên sidebar tối */
.ckg-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 72px;
    padding: 0 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.ckg-brand-logo {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.ckg-brand-name { color: #fff; font-weight: 700; font-size: 1.05rem; line-height: 1.15; }
.ckg-brand-sub  { color: #94a3b8; font-size: .72rem; }

/* Nav sidebar tối */
.ckg-nav-section {
    color: #64748b;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 14px 16px 6px;
}

.ckg-nav .mud-nav-link {
    color: #cbd5e1;
    margin: 2px 8px;
    border-radius: 10px;
    padding-top: 9px;
    padding-bottom: 9px;
    transition: background .15s, color .15s;
}

.ckg-nav .mud-nav-link .mud-nav-link-icon {
    color: #94a3b8;
}

.ckg-nav .mud-nav-link:hover {
    background: rgba(255, 255, 255, .06);
    color: #fff;
}

.ckg-nav .mud-nav-link:hover .mud-nav-link-icon {
    color: #fff;
}

.ckg-nav .mud-nav-link.active {
    background: linear-gradient(135deg, #4f46e5, #6d28d9);
    color: #fff;
    box-shadow: 0 6px 16px rgba(79, 70, 229, .35);
}

.ckg-nav .mud-nav-link.active .mud-nav-link-icon {
    color: #fff;
}

/* Cards */
.ckg-stat,
.ckg-card {
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: 16px;
    transition: box-shadow .18s, transform .18s;
}

.ckg-stat:hover {
    box-shadow: 0 10px 28px rgba(15, 23, 42, .10);
    transform: translateY(-3px);
}

.ckg-logout-btn {
    display: flex;
    align-items: center;
    width: 100%;
    background: none;
    border: none;
    padding: 6px 16px;
    font: inherit;
    color: var(--mud-palette-text-primary);
    cursor: pointer;
    text-align: left;
}

.ckg-logout-btn:hover {
    background: var(--mud-palette-action-default-hover);
}

/* ===== Trang đăng nhập quản trị ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #b5292b 0%, #7a1c1d 100%);
    font-family: 'Roboto', system-ui, sans-serif;
    padding: 1rem;
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, .25);
    padding: 2.25rem 2rem;
}

.login-brand {
    text-align: center;
    margin-bottom: 1.5rem;
}

.login-brand h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #b5292b;
    margin: 0;
}

.login-brand p {
    color: #777;
    margin: .25rem 0 0;
    font-size: .9rem;
}

.login-form label {
    display: block;
    font-size: .85rem;
    font-weight: 500;
    color: #444;
    margin: .85rem 0 .35rem;
}

.login-input {
    width: 100%;
    box-sizing: border-box;
    padding: .65rem .8rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: .95rem;
    outline: none;
    transition: border-color .15s;
}

.login-input:focus {
    border-color: #b5292b;
}

.login-btn {
    width: 100%;
    margin-top: 1.5rem;
    padding: .7rem;
    background: #b5292b;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s;
}

.login-btn:hover {
    background: #99201f;
}

.login-error {
    background: #fde8e8;
    color: #b5292b;
    border-radius: 8px;
    padding: .6rem .8rem;
    font-size: .88rem;
    margin-bottom: .5rem;
}

.login-ok {
    background: #e7f6ec;
    color: #1b7e3c;
    border-radius: 8px;
    padding: .6rem .8rem;
    font-size: .88rem;
    margin-bottom: .5rem;
}

.login-link {
    display: block;
    text-align: center;
    margin-top: 1rem;
    color: #4f46e5;
    font-size: .88rem;
    text-decoration: none;
}

.login-link:hover { text-decoration: underline; }