:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg: #f8fafc;
    --text: #0f172a;
    --border: #e2e8f0;
}

body {
    background: var(--bg);
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
}

.auth-card {
    background: #ffffff;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    width: 100%;
    max-width: 400px;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    display: block;
    margin-bottom: 12px;
}

.auth-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.auth-subtitle {
    color: #64748b;
    font-size: 14px;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #334155;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 16px;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.btn-auth {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-auth:hover {
    background: var(--primary-hover);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: #64748b;
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}