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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.auth-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
    padding: 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 28px;
    color: #333;
    margin-bottom: 8px;
    font-weight: 700;
}

.auth-header p {
    color: #666;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 25px;
    font-size: 14px;
    transition: border-color 0.3s;
    font-family: inherit;
}

input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.submit-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.submit-btn:active {
    transform: scale(0.95);
}

.auth-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #666;
}

.auth-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.auth-link a:hover {
    color: #764ba2;
}

.error {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
}

.requirements {
    background: #f0f4ff;
    border: 1px solid #cfe0ff;
    color: #084298;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 13px;
    line-height: 1.6;
}

.requirements strong {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.requirements ul {
    margin: 0;
    padding-left: 20px;
}

.requirements li {
    margin: 4px 0;
}