:root {
    --bg-color: #0B0B1E;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-stroke: rgba(255, 255, 255, 0.1);
    --accent-color: #4361EE;
    --text-primary: #FFFFFF;
    --text-secondary: #CCCCFF;
    --input-bg: rgba(255, 255, 255, 0.04);
}

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

.logo {
    font-family: 'Tektur', cursive;
    font-size: 60px;
    color: var(--text-primary);
    margin-bottom: 40px;
    text-transform: uppercase;
    letter-spacing: 4px;
    font-weight: 400;
}

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

.background-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.15) 0%, rgba(11, 11, 30, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(40px);
}

.container {
    width: 100%;
    max-width: 640px;
    padding: 20px;
    text-align: center;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-stroke);
    border-radius: 32px;
    padding: 64px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.2;
}

.description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 40px;
    opacity: 0.9;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

input[type="email"] {
    width: 100%;
    height: 60px;
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 0 20px;
    color: white;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}

input[type="email"]:focus {
    border-color: var(--accent-color);
}

button {
    width: 100%;
    height: 60px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 16px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.3s ease, transform 0.2s ease;
}

button:hover {
    filter: brightness(1.1);
}

button:active {
    transform: scale(0.98);
}

.success-message {
    padding: 20px;
    animation: fadeIn 0.5s ease;
}

.success-icon {
    font-size: 48px;
    color: #4CAF50;
    margin-bottom: 16px;
}

.hidden {
    display: none;
}

.footer {
    margin-top: 40px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.3);
}

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

@media (max-width: 480px) {
    .card {
        padding: 32px 24px;
    }
    h1 {
        font-size: 24px;
    }
}