:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(56, 189, 248, 0.08) 0px, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.6;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 520px;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 56px 48px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(24px);
}

.icon {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    margin-bottom: 32px;
}

h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.025em;
    color: #ffffff;
}

p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 24px;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid transparent;
}

a:hover {
    color: #7dd3fc;
    border-bottom-color: #7dd3fc;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 36px 0;
}

.footer {
    font-size: 15px;
    margin-bottom: 0;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .card {
        padding: 40px 24px;
        border-radius: 20px;
    }
    h1 {
        font-size: 26px;
    }
}