:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --light-color: #f5f5f5;
    --dark-color: #333;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background-color: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 450px;
    overflow: hidden;
}

.form-container {
    padding: 40px;
}

.tabs {
    display: flex;
    margin-bottom: 30px;
}

.tab {
    flex: 1;
    text-align: center;
    padding: 15px;
    cursor: pointer;
    background-color: var(--light-color);
    transition: all 0.3s ease;
    font-weight: 600;
}

.tab.active {
    background-color: var(--primary-color);
    color: white;
}

.tab:first-child {
    border-radius: 5px 0 0 5px;
}

.tab:last-child {
    border-radius: 0 5px 5px 0;
}

.form {
    display: none;
}

.form.active {
    display: block;
}

.form-title {
    text-align: center;
    margin-bottom: 30px;
    color: var(--dark-color);
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border 0.3s ease;
}

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

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

.info-box {
    background-color: #e8f4fc;
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    margin-top: 20px;
    border-radius: 0 5px 5px 0;
}

.info-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.allowed-domains {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.domain-tag {
    background-color: var(--light-color);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
}

.countdown {
    text-align: center;
    margin-top: 20px;
    font-size: 18px;
    color: var(--dark-color);
}

.countdown-number {
    font-weight: bold;
    color: var(--primary-color);
}

@media (max-width: 480px) {
    .form-container {
        padding: 30px 20px;
    }
}