/* CSS Variables for theming */
:root {
    /* Primary color derived from logo */
    --primary-color: #003f8b;
    --primary-color-light: #e6f0ff;
    --primary-color-dark: #002a5c;
    --primary-color-accent: #3366cc;

    --bg-color-start: #7eafe1;
    --bg-color-end: #b4fff9;

    --text-color: #1c2a39;
    --text-off-color: #6a7a8a;
    --card-bg: #f0f4f8;
    --input-bg: #e9eef3;
    --button-bg: var(--primary-color);
    --button-text-color: #ffffff;
    --link-color: var(--primary-color-accent);
    --shadow-light: rgba(255, 255, 255, 0.7);
    --shadow-dark: rgba(163, 177, 198, 0.4);
    --border-radius: 30px;
    --border-radius-small: 15px;

    /* Microsoft/Azure button colors */
    --azure-bg: linear-gradient(135deg, #ff8c00, #ffa500);
    --azure-bg-hover: linear-gradient(135deg, #ff7700, #ff9500);
    --azure-text: #ffffff;
    --azure-shadow: rgba(255, 140, 0, 0.3);

    --shadow-level-10: 0px 6px 6px -3px rgba(0, 0, 0, .2), 0px 10px 14px 1px rgba(0, 0, 0, .14), 0px 4px 18px 3px rgba(0, 0, 0, .12);
    --outline-color: #bcbcbc;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color-start: #024764;
        --bg-color-end: #121c27;
        --text-color: #e0e5ec;
        --text-off-color: #8a9aab;
        --card-bg: #1f3042;
        --input-bg: #1a2a3a;
        --button-bg: var(--primary-color-accent);
        --link-color: #6699ff;
        --shadow-light: rgba(42, 63, 84, 0.6);
        --shadow-dark: rgba(14, 24, 34, 0.5);
        --outline-color: #4a4a4a;

        /* Microsoft/Azure button colors for dark mode */
        --azure-bg: linear-gradient(135deg, #ff9500, #ffb347);
        --azure-bg-hover: linear-gradient(135deg, #ffa500, #ffc266);
        --azure-text: #000000;
        --azure-shadow: rgba(255, 149, 0, 0.4);
    }
}

/* Reset and base styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: 'Open Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

body {
    background: linear-gradient(145deg, var(--bg-color-start), var(--bg-color-end));
    background-attachment: fixed;
    color: var(--text-color);
    transition: background 0.3s ease, color 0.3s ease;
}

/* CSS Grid Layout - Single grid container for perfect centering */
.login-grid {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* Login container */
.login-container {
    display: grid;
    gap: 30px;
    width: 100%;
    max-width: 450px;
    padding: 40px;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: inset 0 0 0 1px var(--outline-color), var(--shadow-level-10);
    border: none;
}

/* Header section */
.login-header {
    text-align: center;
    background-image: url(https://storage.googleapis.com/kem-assets/kem-logo.svg);
    background-size: auto 120px;
    background-repeat: no-repeat;
    background-position: center top;
    padding-top: 140px;
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

/* Form styles */
.login-form {
    display: grid;
    gap: 25px;
}

.azure-form {
    display: grid;
    gap: 15px;
}

.form-group {
    display: grid;
}

/* Input styles */
.form-input {
    padding: 18px 25px;
    font-size: 16px;
    color: var(--text-color);
    background: var(--input-bg);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: inset 5px 5px 10px var(--shadow-dark), inset -5px -5px 10px var(--shadow-light);
    transition: box-shadow 0.3s ease;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
}

.form-input::placeholder {
    color: var(--text-off-color);
    font-style: normal;
}

/* Password reset section */
.password-reset {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--text-off-color);
}

.forgot-link {
    color: var(--link-color);
    text-decoration: none;
    font-size: 14px;
}

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

/* Button styles */
.login-button {
    padding: 18px 30px;
    font-size: 16px;
    font-weight: 600;
    color: var(--button-text-color);
    background: var(--button-bg);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
    transition: box-shadow 0.2s ease-out, background-color 0.3s ease;
    cursor: pointer;
    font-family: inherit;
}

.login-button:hover {
    background: var(--primary-color-dark);
}

.login-button:active,
.login-button:focus {
    outline: none;
    box-shadow: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
}

.azure-button {
    padding: 18px 30px;
    background: var(--azure-bg);
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 6px 6px 12px var(--azure-shadow), -6px -6px 12px var(--shadow-light);
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.azure-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.azure-button:hover {
    background: var(--azure-bg-hover);
    transform: translateY(-2px);
    box-shadow: 8px 8px 16px var(--azure-shadow), -8px -8px 16px var(--shadow-light);
}

.azure-button:hover::before {
    left: 100%;
}

.azure-button:active,
.azure-button:focus {
    outline: none;
    transform: translateY(0);
    box-shadow: inset 3px 3px 6px var(--azure-shadow), inset -3px -3px 6px rgba(255, 255, 255, 0.3);
}

.azure-button img {
    height: 36px;
    width: 36px;
}

.azure-button span {
    color: var(--azure-text);
    margin-left: 15px;
    font-size: 16px;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Alert styles */
.alert {
    padding: 15px 20px;
    border-radius: var(--border-radius-small);
    border: none;
    position: relative;
    font-size: 14px;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    box-shadow: inset 2px 2px 4px rgba(198, 40, 40, 0.2), inset -2px -2px 4px rgba(255, 255, 255, 0.8);
}

.alert-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 18px;
    color: inherit;
    cursor: pointer;
    line-height: 1;
}

/* Footer */
.login-footer {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--link-color);
    font-size: 14px;
    text-decoration: none;
    padding: 0 10px;
    border-left: 1px solid var(--text-off-color);
}

.footer-links a:first-child {
    border-left: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 768px) {
    .login-grid {
        padding: 15px;
    }
    
    .login-container {
        padding: 30px 20px;
        gap: 25px;
    }
    
    .login-header {
        background-size: auto 100px;
        padding-top: 120px;
    }
    
    .login-title {
        font-size: 20px;
    }
    
    .password-reset {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-links a {
        border-left: none;
        padding: 5px 0;
    }
}

@media (max-width: 480px) {
    .login-grid {
        padding: 10px;
    }
    
    .login-container {
        padding: 25px 15px;
        border-radius: 15px;
    }
    
    .login-header {
        background-size: auto 80px;
        padding-top: 100px;
    }
    
    .login-title {
        font-size: 18px;
    }
    
    .form-input,
    .login-button,
    .azure-button {
        padding: 15px 20px;
        font-size: 15px;
    }
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 300;
    font-style: normal;
    src: url('../fonts/Open-Sans-300/Open-Sans-300.eot');
    src: url('../fonts/Open-Sans-300/Open-Sans-300.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Light'),
    local('Open-Sans-300'),
    url('../fonts/Open-Sans-300/Open-Sans-300.woff2') format('woff2'),
    url('../fonts/Open-Sans-300/Open-Sans-300.woff') format('woff'),
    url('../fonts/Open-Sans-300/Open-Sans-300.ttf') format('truetype'),
    url('../fonts/Open-Sans-300/Open-Sans-300.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 400;
    font-style: normal;
    src: url('../fonts/Open-Sans-regular/Open-Sans-regular.eot');
    src: url('../fonts/Open-Sans-regular/Open-Sans-regular.eot?#iefix') format('embedded-opentype'),
    local('Open Sans'),
    local('Open-Sans-regular'),
    url('../fonts/Open-Sans-regular/Open-Sans-regular.woff2') format('woff2'),
    url('../fonts/Open-Sans-regular/Open-Sans-regular.woff') format('woff'),
    url('../fonts/Open-Sans-regular/Open-Sans-regular.ttf') format('truetype'),
    url('../fonts/Open-Sans-regular/Open-Sans-regular.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 600;
    font-style: normal;
    src: url('../fonts/Open-Sans-600/Open-Sans-600.eot');
    src: url('../fonts/Open-Sans-600/Open-Sans-600.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Semibold'),
    local('Open-Sans-600'),
    url('../fonts/Open-Sans-600/Open-Sans-600.woff2') format('woff2'),
    url('../fonts/Open-Sans-600/Open-Sans-600.woff') format('woff'),
    url('../fonts/Open-Sans-600/Open-Sans-600.ttf') format('truetype'),
    url('../fonts/Open-Sans-600/Open-Sans-600.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 700;
    font-style: normal;
    src: url('../fonts/Open-Sans-700/Open-Sans-700.eot');
    src: url('../fonts/Open-Sans-700/Open-Sans-700.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Bold'),
    local('Open-Sans-700'),
    url('../fonts/Open-Sans-700/Open-Sans-700.woff2') format('woff2'),
    url('../fonts/Open-Sans-700/Open-Sans-700.woff') format('woff'),
    url('../fonts/Open-Sans-700/Open-Sans-700.ttf') format('truetype'),
    url('../fonts/Open-Sans-700/Open-Sans-700.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 800;
    font-style: normal;
    src: url('../fonts/Open-Sans-800/Open-Sans-800.eot');
    src: url('../fonts/Open-Sans-800/Open-Sans-800.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Extrabold'),
    local('Open-Sans-800'),
    url('../fonts/Open-Sans-800/Open-Sans-800.woff2') format('woff2'),
    url('../fonts/Open-Sans-800/Open-Sans-800.woff') format('woff'),
    url('../fonts/Open-Sans-800/Open-Sans-800.ttf') format('truetype'),
    url('../fonts/Open-Sans-800/Open-Sans-800.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 300;
    font-style: italic;
    src: url('../fonts/Open-Sans-300italic/Open-Sans-300italic.eot');
    src: url('../fonts/Open-Sans-300italic/Open-Sans-300italic.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Light Italic'),
    local('Open-Sans-300italic'),
    url('../fonts/Open-Sans-300italic/Open-Sans-300italic.woff2') format('woff2'),
    url('../fonts/Open-Sans-300italic/Open-Sans-300italic.woff') format('woff'),
    url('../fonts/Open-Sans-300italic/Open-Sans-300italic.ttf') format('truetype'),
    url('../fonts/Open-Sans-300italic/Open-Sans-300italic.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 400;
    font-style: italic;
    src: url('../fonts/Open-Sans-italic/Open-Sans-italic.eot');
    src: url('../fonts/Open-Sans-italic/Open-Sans-italic.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Italic'),
    local('Open-Sans-italic'),
    url('../fonts/Open-Sans-italic/Open-Sans-italic.woff2') format('woff2'),
    url('../fonts/Open-Sans-italic/Open-Sans-italic.woff') format('woff'),
    url('../fonts/Open-Sans-italic/Open-Sans-italic.ttf') format('truetype'),
    url('../fonts/Open-Sans-italic/Open-Sans-italic.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 600;
    font-style: italic;
    src: url('../fonts/Open-Sans-600italic/Open-Sans-600italic.eot');
    src: url('../fonts/Open-Sans-600italic/Open-Sans-600italic.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Semibold Italic'),
    local('Open-Sans-600italic'),
    url('../fonts/Open-Sans-600italic/Open-Sans-600italic.woff2') format('woff2'),
    url('../fonts/Open-Sans-600italic/Open-Sans-600italic.woff') format('woff'),
    url('../fonts/Open-Sans-600italic/Open-Sans-600italic.ttf') format('truetype'),
    url('../fonts/Open-Sans-600italic/Open-Sans-600italic.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 700;
    font-style: italic;
    src: url('../fonts/Open-Sans-700italic/Open-Sans-700italic.eot');
    src: url('../fonts/Open-Sans-700italic/Open-Sans-700italic.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Bold Italic'),
    local('Open-Sans-700italic'),
    url('../fonts/Open-Sans-700italic/Open-Sans-700italic.woff2') format('woff2'),
    url('../fonts/Open-Sans-700italic/Open-Sans-700italic.woff') format('woff'),
    url('../fonts/Open-Sans-700italic/Open-Sans-700italic.ttf') format('truetype'),
    url('../fonts/Open-Sans-700italic/Open-Sans-700italic.svg#OpenSans') format('svg');
}

@font-face {
    font-family: 'Open Sans';
    font-weight: 800;
    font-style: italic;
    src: url('../fonts/Open-Sans-800italic/Open-Sans-800italic.eot');
    src: url('../fonts/Open-Sans-800italic/Open-Sans-800italic.eot?#iefix') format('embedded-opentype'),
    local('Open Sans Extrabold Italic'),
    local('Open-Sans-800italic'),
    url('../fonts/Open-Sans-800italic/Open-Sans-800italic.woff2') format('woff2'),
    url('../fonts/Open-Sans-800italic/Open-Sans-800italic.woff') format('woff'),
    url('../fonts/Open-Sans-800italic/Open-Sans-800italic.ttf') format('truetype'),
    url('../fonts/Open-Sans-800italic/Open-Sans-800italic.svg#OpenSans') format('svg');
}

/* Modal Container - independent from login-grid */
.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 999;
}

/* Modal Dialog Styles */
.modal-dialog {
    border: none;
    border-radius: var(--border-radius);
    padding: 0;
    background: transparent;
    max-height: 90vh;
    max-width: 90vw;
    box-shadow: var(--shadow-level-10);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform: translate(-50%, -50%) scale(0.9);
    width: fit-content;
    height: fit-content;
    position: fixed;
    top: 50%;
    left: 50%;
    z-index: 1000;
    pointer-events: auto;
}

.modal-dialog[open] {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.modal-dialog::backdrop {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-dialog[open]::backdrop {
    opacity: 1;
}

.modal-normal {
    width: 500px;
    max-width: 90vw;
}

.modal-wide {
    width: 800px;
    max-width: 90vw;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    min-height: fit-content;
    width: 100%;
    border: 1px solid var(--outline-color);
    min-width: 400px;
}

.modal-header {
    background: var(--primary-color);
    color: white;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: 25px;
    overflow-y: auto;
    flex: 0 1 auto;
    max-height: calc(90vh - 80px);
}

/* Override any grid behavior inside modal */
.modal-body .login-grid {
    display: block !important;
    min-height: auto !important;
    padding: 0 !important;
    place-items: initial !important;
}

.modal-body .login-container {
    display: block !important;
    gap: 20px !important;
    width: 100% !important;
    max-width: none !important;
    padding: 0 !important;
    background: transparent !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    border: none !important;
}

/* Responsive modal styles */
@media (max-width: 600px) {
    .modal-dialog {
        width: 95vw;
        max-width: 95vw;
        max-height: 95vh;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.9);
    }
    
    .modal-dialog[open] {
        transform: translate(-50%, -50%) scale(1);
    }
    
    .modal-wide,
    .modal-normal {
        width: 100%;
    }
    
    .modal-content {
        min-width: unset;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .modal-title {
        font-size: 1.1rem;
    }
    
    .modal-body {
        padding: 20px;
        max-height: calc(95vh - 80px);
        overflow-y: auto;
    }
}

/* Password Reset Form Styles */
.form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 20px;
}

.password-strength {
    margin: 15px 0;
    background: var(--input-bg);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease, background-color 0.3s ease;
    width: 0%;
}

.strength-weak {
    background: #e74c3c;
}

.strength-fair {
    background: #f39c12;
}

.strength-good {
    background: #f1c40f;
}

.strength-strong {
    background: #27ae60;
}

.password-messages {
    margin: 10px 0;
}

.password-error {
    color: #e74c3c;
    font-size: 0.875rem;
    margin: 5px 0;
    padding: 5px 10px;
    background: rgba(231, 76, 60, 0.1);
    border-radius: var(--border-radius-small);
    border-left: 3px solid #e74c3c;
}

.password-requirements {
    margin: 15px 0;
    padding: 15px;
    background: var(--primary-color-light);
    border-radius: var(--border-radius-small);
    font-size: 0.875rem;
}

.password-requirements p {
    margin: 5px 0;
    color: var(--text-off-color);
}

/* Form labels for modal forms */
.modal-body label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

/* Override button styles for disabled state */
.login-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--text-off-color);
}

.login-button:disabled:hover {
    background: var(--text-off-color);
    transform: none;
}

/* Loading state for buttons and links */
.loading {
    position: relative;
    color: transparent !important;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    color: inherit;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success message styles */
.success-message {
    text-align: center;
    padding: 30px 20px;
}

.success-message p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.success-message .login-button {
    display: inline-block;
    text-decoration: none;
    margin-top: 10px;
}