@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700&display=swap');

:root {
    --bg: #0f172a;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --primary: #38bdf8;
    --primary-contrast: #0b1726;
    --border: rgba(255, 255, 255, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 24px;
    background: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.1), transparent 25%), radial-gradient(circle at 80% 0%, rgba(94, 234, 212, 0.08), transparent 30%), var(--bg);
    color: var(--text);
    font-family: 'Manrope', 'Segoe UI', sans-serif;
    min-height: 100vh;
}

.container {
    max-width: 520px;
    margin: 0 auto;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    text-align: center;
}

.hidden {
    display: none;
}

h2 {
    margin: 0 0 12px;
    font-size: 20px;
}

p {
    margin: 8px 0;
}

.muted {
    color: var(--muted);
}

.btn {
    display: inline-block;
    margin-top: 16px;
    padding: 12px 18px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    color: var(--card);
    background: var(--text);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.35);
}

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

.btn.primary {
    background: linear-gradient(120deg, var(--primary), #22d3ee);
    color: var(--primary-contrast);
}

.btn.secondary {
    background: #1f2937;
    color: var(--text);
    border: 1px solid var(--border);
}

.panel {
    margin-top: 18px;
    padding: 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border);
}

.status-icon {
    font-size: 32px;
    margin: 6px 0 12px;
}

.status-icon.success {
    color: #34d399;
}

.spinner {
    width: 42px;
    height: 42px;
    margin: 0 auto 12px;
    border: 4px solid rgba(255, 255, 255, 0.08);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 480px) {
    body {
        padding: 16px;
    }

    .card {
        padding: 20px;
    }
}