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

:root {
    --primary-color: #E91E63;
    --secondary-color: #9C27B0;
    --text-color: #2C3E50;
    --text-light: #7F8C8D;
    --bg-color: #F8F9FA;
    --border-color: #E0E0E0;
    --error-color: #E74C3C;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.auth-container {
    width: 100%;
    max-width: 450px;
}

.auth-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    padding: 2.5rem;
}

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

.back-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 1rem;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}

.auth-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-header p {
    color: var(--text-light);
}

.auth-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

.error-message {
    background: #FFEBEE;
    color: var(--error-color);
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(233, 30, 99, 0.4);
}

.btn-block {
    width: 100%;
    display: block;
}

.auth-footer {
    text-align: center;
    color: var(--text-light);
}

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

.auth-footer a:hover {
    text-decoration: underline;
}

/* Адаптивность */
@media (max-width: 768px) {
    body {
        padding: 0.75rem;
    }

    .auth-card {
        padding: 2rem 1.5rem;
        max-height: 95vh;
        overflow-y: auto;
    }

    .auth-header {
        margin-bottom: 1.5rem;
    }

    .auth-header h1 {
        font-size: 1.75rem;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .form-group input {
        padding: 0.7rem 0.9rem;
    }

    .btn {
        padding: 0.7rem 1.25rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0.5rem;
    }

    .auth-card {
        padding: 1.5rem 1.25rem;
    }

    .auth-header h1 {
        font-size: 1.5rem;
    }

    .auth-header p {
        font-size: 0.9rem;
    }

    .form-group label {
        font-size: 0.9rem;
    }

    .form-group input {
        font-size: 0.95rem;
        padding: 0.65rem 0.85rem;
    }

    .auth-footer {
        font-size: 0.9rem;
    }
}

@media (max-width: 380px) {
    .auth-card {
        padding: 1.25rem 1rem;
    }

    .auth-header h1 {
        font-size: 1.35rem;
    }
}