/* Base Styles and Variables */
:root {
    --primary-blue: #0068b7; /* Main blue from logo */
    --secondary-blue: #003a64; /* Darker blue from logo */
    --light-gray: #f8f8f8;
    --medium-gray: #e0e0e0;
    --dark-gray: #666666;
    --text-dark: #333333;
    --text-light: #ffffff;
    --spacing: 20px;
    --border-radius: 4px;
    --error-red: #dc3545;
    --success-green: #28a745;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #ffffff;
    letter-spacing: 0.03em;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
}

/* Login Container */
.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--medium-gray);
}

/* Logo Section */
.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo-section img {
    height: 80px;
    margin-bottom: 20px;
}

.logo-section h1 {
    font-size: 1.8rem;
    color: var(--text-dark);
    letter-spacing: 0.08em;
    font-weight: 400;
    margin-bottom: 10px;
}

.logo-section p {
    color: var(--dark-gray);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

/* Form Styles */
.login-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 400;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 0.9rem;
    letter-spacing: 0.03em;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i {
    position: absolute;
    left: 12px;
    color: var(--dark-gray);
    z-index: 2;
}

.input-group input {
    width: 100%;
    padding: 12px 40px;
    border: 1px solid var(--dark-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
    color: var(--text-dark);
    font-family: 'Arial', sans-serif;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(0, 104, 183, 0.1);
}

.toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: var(--dark-gray);
    cursor: pointer;
    padding: 8px;
    transition: color 0.3s ease;
    z-index: 2;
}

.toggle-password:hover {
    color: var(--primary-blue);
}

.toggle-password:focus {
    outline: none;
    color: var(--primary-blue);
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: 14px 20px;
    background: var(--text-dark);
    color: white;
    border: 1px solid var(--text-dark);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.login-btn:hover:not(:disabled) {
    background: var(--dark-gray);
    border-color: var(--dark-gray);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.login-btn:disabled {
    background: var(--medium-gray);
    border-color: var(--medium-gray);
    color: var(--dark-gray);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Messages */
.error-message {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.error-message::before {
    content: '\f071';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

.loading-message {
    background: var(--light-gray);
    border: 1px solid var(--medium-gray);
    color: var(--dark-gray);
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.9rem;
}

.success-message {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.success-message::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

/* Footer */
.footer-text {
    text-align: center;
    color: var(--dark-gray);
    font-size: 0.8rem;
    line-height: 1.4;
    border-top: 1px solid var(--medium-gray);
    padding-top: 20px;
}

.footer-text p {
    margin-bottom: 5px;
}

.footer-text small {
    font-size: 0.75rem;
    color: var(--dark-gray);
}

/* Loading Animation */
.fa-spinner {
    animation: spin 1s linear infinite;
}

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

/* Mobile Responsiveness */
@media (max-width: 480px) {
    .login-container {
        padding: 10px;
    }
    
    .login-card {
        padding: 30px 20px;
    }
    
    .logo-section img {
        height: 60px;
    }
    
    .logo-section h1 {
        font-size: 1.5rem;
    }
    
    .input-group input {
        padding: 12px 35px;
    }
}

/* Focus states for accessibility */
.login-btn:focus,
input:focus,
.toggle-password:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .login-card {
        border: 2px solid var(--text-dark);
    }
    
    .input-group input {
        border: 2px solid var(--text-dark);
    }
}