/* Stackbridge — светлая сине-белая тема (stackbridge-it.ru / письма). */
:root,
[data-theme="stackbridge"] {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f3f4f6;
    --border-color: rgba(32, 79, 158, 0.22);
    --text-primary: #252525;
    --text-secondary: #4a5565;
    --accent-blue: #284f9e;
    --accent-red: #c0392b;
    --error-color: #c0392b;
    --warning-color: #b78103;
}

.auth-body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.login-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(32, 79, 158, 0.08);
}

.brand__logo {
    width: auto;
    max-width: 220px;
    height: 48px;
    object-fit: contain;
}

.brand__logo--sm {
    width: auto;
    max-width: 180px;
    height: 36px;
}

.brand__title {
    color: var(--accent-blue);
}

.form-input:focus,
.form-group input:not([type="checkbox"]):not([type="radio"]):focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(40, 79, 158, 0.15);
}

.message--info {
    background-color: rgba(40, 79, 158, 0.08);
    color: var(--text-primary);
}

.message--warning {
    background-color: rgba(183, 129, 3, 0.12);
}

.btn {
    background-color: var(--accent-blue);
    border-radius: 8px;
}

.btn:hover {
    background-color: #1a4080;
    opacity: 1;
}

.btn--ghost {
    color: var(--accent-blue);
    border-color: var(--border-color);
}

.manage-header {
    background-color: #284f9e;
    color: #ffffff;
    border-radius: 10px;
    padding: 16px 20px;
}

.manage-header .brand__title,
.manage-header .manage-sub,
.manage-header .admin-nav__link {
    color: #ffffff;
}

.manage-header .manage-sub {
    opacity: 0.85;
}

.manage-header .brand__logo,
.manage-header .brand__logo--sm {
    height: 32px;
    max-width: 200px;
}

.manage-header .btn--ghost {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.45);
}

.manage-header .btn--ghost:hover {
    background-color: rgba(255, 255, 255, 0.12);
}

.admin-nav__link--active {
    background-color: rgba(255, 255, 255, 0.18);
}

.manage-panel,
.login-container.manage-panel {
    background-color: var(--bg-secondary);
}

.link-btn,
.form-link,
a {
    color: var(--accent-blue);
}