:root {
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --background-color: #f5f6fa;
    --text-color: #2c3e50;
    --error-color: #e74c3c;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: #1a1f2c;
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-image: 
        linear-gradient(45deg, rgba(30, 41, 59, 0.8) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(30, 41, 59, 0.8) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(30, 41, 59, 0.8) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(30, 41, 59, 0.8) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.container {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
}

.logo p {
    color: #666;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #666;
}

.submit-button {
    background-color: var(--accent-color);
    color: white;
    padding: 0.875rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.submit-button:hover {
    background-color: #2980b9;
}

.submit-button:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

.error-message {
    color: var(--error-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    min-height: 1.2em;
    text-align: center;
}

.site-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
}

.site-footer p {
    margin: 0.3rem 0;
    line-height: 1.4;
}

.site-footer .tech-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 0.5rem;
    font-family: monospace;
}

.site-footer .divider {
    color: rgba(255, 255, 255, 0.2);
}