:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --background-color: #f9fafb;
    --text-color: #111827;
    --error-color: #dc2626;
}

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

.container {
    background: white;
    padding: 2rem 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    text-align: center;
    max-width: 400px;
    width: 100%;
    animation: fadeIn 0.5s ease-out;
}

h1 {
    margin-top: 0;
    font-size: 1.75rem;
    color: var(--primary-color);
}

p {
    line-height: 1.6;
    color: #4b5563;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: left;
}

label {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: #374151;
}

input {
    padding: 0.625rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

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

.btn:active {
    transform: translateY(0);
}

.error {
    color: var(--error-color);
    font-size: 0.875rem;
    margin: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}