#loginMessage {
    border-radius: 6px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-weight: 400;
    transition: all 0.2s ease;
}

.alert-success {
    background-color: #ffffff;
    border-left: 4px solid #7a8a7a;
    color: #212121;
}

.alert-danger {
    background-color: #ffffff;
    border-left: 4px solid #9a6b6b;
    color: #212121;
}

.alert-warning {
    background-color: #ffffff;
    border-left: 4px solid #9a8b6b;
    color: #212121;
}

:root {
    --input-bg: #ffffff;
    --input-border: #e0e0e0;
    --input-focus: #455a64;
    --button-bg: #1a1a2e;
    --button-hover: #121221;
    --text-primary: #212121;
    --text-secondary: #616161;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100vw;
    padding: 24px;
    background: #f8f9fa;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: auto;
    z-index: 1;
}

.login-card {
    background: #ffffff;
    border-radius: 6px;
    box-shadow: var(--card-shadow);
    padding: 40px 44px;
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    border: 1px solid #e0e0e0;
    position: relative;
}

.login-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.login-brand-name {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.12rem;
    color: #212121;
    text-transform: uppercase;
}

.login-header {
    text-align: center;
    margin-bottom: 24px;
}

.login-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 24px;
    letter-spacing: -0.2px;
}

.login-subtitle {
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 0;
    font-size: 14px;
}

#loginForm {
    padding: 4px 0 8px;
}

.dx-form-validation-summary {
    margin-top: 12px;
}

.login-card a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #455a64;
    font-weight: 600;
    text-decoration: none;
    margin-top: 12px;
}

.login-card a:hover {
    color: #1a1a2e;
}

.dx-texteditor.dx-editor-filled {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.dx-texteditor.dx-editor-filled.dx-state-focused {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px rgba(69, 90, 100, 0.15);
}

.dx-texteditor-input {
    font-size: 1rem;
    padding: 0.9rem 1.1rem;
    color: var(--text-primary);
}

.dx-placeholder::before {
    padding: 0.7rem 0.9rem;
    color: var(--text-secondary);
}

.dx-button-mode-contained.dx-button-default {
    background: var(--button-bg);
    border-color: var(--button-bg);
    border-radius: 6px;
    padding: 12px 0;
    font-weight: 600;
    letter-spacing: 0.2px;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: none;
}

.dx-button-mode-contained.dx-button-default:hover {
    background: var(--button-hover);
    border-color: var(--button-hover);
    transform: none;
}

.dx-button-mode-contained.dx-button-default.dx-state-focused,
.dx-button-mode-contained.dx-button-default:focus-visible {
    box-shadow: 0 0 0 2px rgba(69, 90, 100, 0.25);
}

.dx-button-mode-contained.dx-button-default:active {
    transform: none;
    box-shadow: none;
}

#login-submit {
    width: 100% !important;
    border-radius: 6px;
    min-height: 46px;
}

#login-submit .dx-button-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    overflow: visible;
}

#login-submit .dx-button-text {
    font-size: 1rem;
    line-height: 1.2;
    white-space: nowrap;
}

.dx-button-content {
    font-size: 1rem;
    padding: 8px 0;
}

.dx-checkbox-icon {
    border-radius: 4px;
}

.dx-checkbox-checked .dx-checkbox-icon {
    background-color: var(--button-bg);
    border-color: var(--button-bg);
}

.dx-checkbox-text {
    color: var(--text-secondary);
}

.dx-form .dx-field-item:not(.dx-field-item-has-group):not(.dx-field-item-has-tabs):not(.dx-item-selected):not(.dx-field-item-button) {
    padding-bottom: 18px;
}

.dx-validationsummary-item {
    color: #455a64;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .login-container {
        position: fixed;
        width: 100vw;
        height: 100vh;
    }
    
    .login-card {
        padding: 28px 22px;
        border-radius: 6px;
    }
    
    .login-title {
        font-size: 22px;
    }
}

/* Responsive adjustments */
@media (max-width: 767.98px) {
    .login-container {
        position: fixed;
        width: 100vw;
        height: 100vh;
    }
    
    .sidebar {
        position: static;
        height: auto;
        padding-top: 1rem;
    }
    
    main {
        margin-left: 0 !important;
    }
}

/* Notebook display adjustments */
@media (min-width: 768px) and (max-width: 1199.98px) {
    .login-card {
        padding: 36px 32px;
        max-width: 460px;
    }
    
    .login-title {
        font-size: 22px;
        margin-bottom: 8px;
    }
    
    .login-subtitle {
        margin-bottom: 0;
    }
    
    .dx-button-content {
        padding: 6px 0;
    }
}

/* Desktop full-screen adjustments */
@media (min-width: 1200px) {
    .login-container {
        width: 100vw;
        height: 100vh;
        overflow: hidden;
    }
    
    .login-card {
        max-width: 460px;
        padding: 44px;
    }
    
    .dx-texteditor.dx-editor-filled {
        margin-bottom: 16px;
    }
    
    .dx-button-content {
        padding: 8px 0;
        font-size: 1rem;
    }

    a {
        color: #455a64;
        text-decoration: none;
    }
}

.dx-button.btn-loading {
    width: 96%;
}
.dx-button.btn-loading .dx-button-content {
    opacity: 0.9;
}
.dx-button.btn-loading .dx-button-text {
    position: relative;
    padding-left: 22px;
}
.dx-button.btn-loading .dx-button-text::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 16px;
    height: 16px;
    margin-top: -8px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    border-top-color: transparent;
    animation: dx-spin 0.8s linear infinite;
}
@keyframes dx-spin {
    to { transform: rotate(360deg); }
}