/* login.css - Highly Optimized for fast First Contentful Paint (FCP) */

:root {
    --bg-page: #f0f2f5;
    --bg-card: #ffffff;
    --border-color: #d0d7de;
    --text-primary: #1f2328;
    --text-secondary: #57606a;
    --input-bg: #ffffff;
    --accent-blue: #0969da;
    --accent-blue-hover: #0a7ff9;
    --border-radius: 8px;
    --transition-fast: 0.15s ease;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-primary);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.login-container {
    width: 90%;
    max-width: 380px;
    padding: 32px;
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

.login-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.login-header p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    box-sizing: border-box;
    transition: border-color var(--transition-fast);
}

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

.submit-btn {
    width: 100%;
    padding: 12px;
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    background-color: var(--accent-blue);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    margin-top: 8px;
}

.submit-btn:hover {
    background-color: var(--accent-blue-hover);
}

.error-message {
    color: #d73a49;
    font-size: 13px;
    text-align: center;
    margin-top: 16px;
    min-height: 20px;
    font-weight: 500;
}