:root {
    --background: #101010;
    --surface: #1c1c1c;
    --primary: #b1b1b1;
    --secondary: #8e8e8e;
    --accent: #ffffff;
    --border: #2b2b2b;
    --error: #ff4444;
    --success: #4CAF50;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: black;
    color: var(--primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.form-box {
    background-color: black;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
}

h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 8px;
}

p {
    color: var(--secondary);
    font-size: 16px;
    margin: 0 0 32px;
}

.form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.form-input {
    box-sizing: border-box;
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--background);
    color: var(--primary);
    font-size: 16px;
}

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

.form-input::placeholder {
    color: var(--secondary);
}

.submit-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s;
    width: 100%;
    border: none;
    cursor: pointer;
    background-color: var(--accent);
    color: black;
}

.submit-button:hover {
    opacity: 0.9;
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 14px;
}

.alert.success {
    background-color: var(--success);
    color: white;
}

.alert.error {
    background-color: var(--error);
    color: white;
}

.back-link {
    display: inline-block;
    margin-top: 24px;
    color: var(--accent);
    text-decoration: none;
    font-size: 14px;
}

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

.loading {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #333;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}