/* Shared by index.html boot shell and Login.razor */
.vk-login-bg {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--vk-login-bg);
    position: relative;
    overflow: hidden;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    padding: 1rem;
}

.vk-login-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/vk-watermark.svg');
    background-repeat: repeat;
    background-size: 400px 240px;
    background-position: center center;
    background-attachment: fixed;
    background-origin: content-box;
    opacity: var(--vk-login-watermark-opacity);
    pointer-events: none;
    z-index: 0;
    margin: 0;
    height: 100vh;
}

.vk-login-card {
    width: min(100%, 380px);
    border-radius: 8px;
    padding: 32px 30px;
    background: linear-gradient(135deg, var(--vk-nav-dark) 0%, var(--vk-nav) 62%, var(--vk-nav-accent) 135%);
    box-shadow: var(--vk-shadow-lg);
    z-index: 1;
    border: 1px solid var(--vk-card-border);
    max-height: calc(100vh - 80px);
    overflow: auto;
}

.vk-logo {
    height: auto;
    max-height: 90px;
    max-width: 100%;
    width: 260px;
    margin-bottom: 6px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    object-fit: contain;
}

.login-brand-title {
    color: white;
    font-weight: 800;
    margin-bottom: 2px;
}

.login-brand-subtitle {
    color: white;
    font-size: 13px;
    font-weight: 600;
}

.vk-login-bg .form-label,
.vk-login-bg label.form-label {
    color: white;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
    margin-bottom: 0.38rem;
    text-transform: uppercase;
    display: block;
}

.vk-input-wrap {
    position: relative;
    margin-bottom: 0.5rem;
}

.vk-input {
    width: 100%;
    background: var(--vk-surface-filled);
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 12px 44px 12px 44px;
    color: var(--vk-text);
    min-height: 46px;
    outline: none;
    box-sizing: border-box;
    transition: background-color 0.16s ease, box-shadow 0.16s ease;
}

.vk-input:focus {
    background: var(--vk-surface-hover);
    box-shadow: inset 0 0 0 1px var(--vk-blue-600), var(--vk-ring);
}

.vk-input:hover {
    background: var(--vk-surface-hover);
    box-shadow: inset 0 0 0 1px var(--vk-border-strong);
}

.vk-input::placeholder {
    color: var(--vk-placeholder);
}

.vk-input:disabled {
    opacity: 0.85;
    cursor: wait;
}

.vk-left-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--vk-muted);
    width: 20px;
    height: 20px;
    object-fit: contain;
    display: block;
    pointer-events: none;
}

.vk-right-icon {
    position: absolute;
    right: 7px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--vk-muted);
    background: transparent;
    border: 0;
    border-radius: 8px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    width: 34px;
}

.vk-right-icon:hover {
    background: var(--vk-state-hover);
}

.vk-right-icon img {
    width: 18px;
    height: 18px;
}

.vk-btn {
    margin-top: 8px;
    background: linear-gradient(180deg, var(--vk-primary-start), var(--vk-primary-end));
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: white;
    padding: 12px 14px;
    border-radius: 8px;
    font-weight: 800;
    box-shadow: 0 10px 24px var(--vk-primary-shadow-hover);
    min-height: 46px;
    text-transform: uppercase;
    width: 100%;
    cursor: pointer;
    transition: background-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.vk-btn:hover:not(:disabled) {
    background: linear-gradient(180deg, var(--vk-primary-hover-start), var(--vk-primary-hover-end));
    box-shadow: 0 14px 30px var(--vk-primary-shadow-hover);
    transform: translateY(-1px);
}

.vk-btn:active:not(:disabled) {
    box-shadow: 0 8px 18px var(--vk-primary-shadow);
    transform: translateY(0);
}

.vk-btn:disabled {
    cursor: wait;
    opacity: 0.9;
}

.vk-reset-help {
    margin-top: 14px;
    padding: 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: white;
    text-align: center;
    display: grid;
    gap: 4px;
}

.vk-reset-help strong {
    font-size: 0.88rem;
}

.vk-reset-help span {
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.82rem;
    line-height: 1.35;
}

.login-theme-toggle {
    --vk-nav-control: rgba(15, 23, 42, 0.08);
    --vk-nav-control-hover: rgba(15, 23, 42, 0.13);
    --vk-nav-control-border: var(--vk-card-border);
    position: absolute;
    right: 1rem;
    top: 1rem;
    z-index: 2;
}

:root[data-theme="dark"] .login-theme-toggle {
    --vk-nav-control: rgba(255, 255, 255, 0.08);
    --vk-nav-control-hover: rgba(255, 255, 255, 0.14);
    --vk-nav-control-border: rgba(255, 255, 255, 0.18);
}

:root[data-theme="dark"] .vk-login-bg .vk-left-icon,
:root[data-theme="dark"] .vk-login-bg .vk-right-icon img {
    filter: brightness(0) invert(1);
    opacity: 0.78;
}

.vk-login-card .alert-info {
    background: rgba(219, 234, 254, 0.95);
    border: 1px solid #93c5fd;
    color: #1e3a8a;
}

.vk-login-card .text-center {
    text-align: center;
}

.vk-login-card .mb-3 {
    margin-bottom: 1rem;
}

.login-boot-hint {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.78rem;
    font-weight: 650;
    margin: 0.65rem 0 0;
    text-align: center;
}