:root {
    --bg-primary: #0a1929;
    --bg-surface: #132f4c;
    --bg-surface-light: #1e4976;
    --text-primary: #ffffff;
    --text-secondary: #b2bac2;
    --text-tertiary: #8a99a8;
    --accent-primary: #1976d2;
    --accent-hover: #1565c0;
    --border-color: #2d4458;
    --border-light: #3c5a7a;
    --error-color: #f44336;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --dev-color: #9c27b0;
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.25);
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.container {
    display: flex;
    min-height: calc(100vh - 120px);
    width: 100%;
}

/* Left Panel - Brand Identity */
.left-panel {
    flex: 1;
    background-color: var(--bg-primary);
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.left-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(25, 118, 210, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(25, 118, 210, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
}

.vertical-divider {
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background-color: var(--border-color);
}

.meridian-graphic {
    position: absolute;
    bottom: 10%;
    left: 10%;
    width: 80%;
    height: 2px;
    background-color: var(--accent-primary);
    opacity: 0.2;
}

.meridian-graphic::before,
.meridian-graphic::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 0;
    background-color: var(--accent-primary);
    opacity: 0.2;
    top: 50%;
    transform: translateY(-50%);
}

.meridian-graphic::before {
    left: 0;
}

.meridian-graphic::after {
    right: 0;
}

.branding {
    position: relative;
    z-index: 2;
    max-width: 480px;
}

.wordmark {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 3.5rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tagline {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 2rem;
    letter-spacing: 0.5px;
}

.description {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 380px;
    margin-top: 1.5rem;
    border-left: 2px solid var(--border-color);
    padding-left: 1.5rem;
}

/* Right Panel - Login Form */
.right-panel {
    flex: 1;
    background-color: var(--bg-surface);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.login-form-container {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
}

.form-header {
    margin-bottom: 2.5rem;
}

.form-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.form-subtitle {
    font-size: 0.95rem;
    color: var(--text-tertiary);
}

/* Form Elements */
.form-group {
    margin-bottom: 1.75rem;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.role-selector {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238a99a8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    transition: border-color 0.2s ease;
}

.role-selector:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.role-selector option {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.5rem;
}

.input-field {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.password-wrapper {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.25rem;
}

.toggle-password:hover {
    color: var(--text-secondary);
}

.login-button {
    width: 100%;
    padding: 1rem;
    background-color: var(--accent-primary);
    color: white;
    border: none;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 0.5rem;
}

.login-button:not(:disabled):hover {
    background-color: var(--accent-hover);
}

.login-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.security-hint {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Error States */
.error-message {
    font-size: 0.85rem;
    color: var(--error-color);
    margin-top: 0.5rem;
    display: none;
}

.error .input-field,
.error .role-selector {
    border-color: var(--error-color);
}

.error .error-message {
    display: block;
}

/* Loading State */
.loading {
    display: none;
    align-items: center;
    justify-content: center;
    margin-top: 1rem;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 0;
    border-top-color: var(--accent-primary);
    animation: spin 1s linear infinite;
    margin-right: 0.75rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Enhanced Footer */
.footer {
    padding: 1.5rem 2.5rem;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    min-height: 120px;
    gap: 2rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-width: 300px;
}

.environment-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.environment-badge {
    padding: 0.35rem 1rem;
    background-color: var(--success-color);
    color: white;
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    border-radius: 0;
    text-transform: uppercase;
}

.environment-badge.development {
    background-color: var(--dev-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.8; }
    100% { opacity: 1; }
}

.environment-status {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.version-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.version {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.build-id {
    color: var(--text-tertiary);
    font-size: 0.8rem;
    font-family: monospace;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border-color);
}

.footer-divider {
    width: 1px;
    height: 60px;
    background-color: var(--border-color);
    margin: 0 1rem;
}

.footer-right {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
    max-width: 600px;
}

.legal-text {
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--accent-primary);
    text-decoration: underline;
}

.footer-separator {
    color: var(--border-color);
    font-size: 0.8rem;
}

/* Responsive Adjustments */
@media (max-width: 1200px) {
    .footer {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-divider {
        width: 80%;
        height: 1px;
        margin: 0.5rem 0;
    }
    
    .footer-left, .footer-right {
        min-width: auto;
        max-width: 100%;
        align-items: center;
    }
}

@media (max-width: 992px) {
    .container {
        flex-direction: column;
        min-height: calc(100vh - 180px);
    }
    
    .left-panel {
        padding: 2rem;
    }
    
    .wordmark {
        font-size: 2.5rem;
    }
    
    .vertical-divider {
        display: none;
    }
    
    .meridian-graphic {
        display: none;
    }
    
    .footer {
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    .left-panel, .right-panel {
        padding: 1.5rem;
    }
    
    .login-form-container {
        padding: 2rem 1.5rem;
    }
    
    .wordmark {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1.25rem;
    }
    
    .environment-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .version-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .footer-links {
        justify-content: center;
    }
}

/* Focus states for accessibility */
.role-selector:focus,
.input-field:focus,
.login-button:focus,
.toggle-password:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Keyboard navigation indicator */
.role-selector:focus-visible,
.input-field:focus-visible,
.login-button:focus-visible,
.toggle-password:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.footer-link:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}