@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@300;400;500;600&display=swap");

:root {
    --bg: #0e1117;
    --surface: #161b22;
    --border: #2d333b;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --blue: #388bfd;
    --blue-soft: rgba(56, 139, 253, 0.12);
    --green: #2ea043;
    --green-soft: rgba(46, 160, 67, 0.15);
    --font-sans: "IBM Plex Sans", system-ui, sans-serif;
    --font-mono: "IBM Plex Mono", monospace;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem 2.25rem;
    width: 100%;
    max-width: 460px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    margin-bottom: 1.25rem;
}
.icon-blue  { background: var(--blue-soft);  color: var(--blue); }
.icon-green { background: var(--green-soft); color: var(--green); }

h1 {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 2rem;
    line-height: 1.5;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.92rem;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.btn-login {
    background: #1c2129;
    color: var(--text);
}
.btn-login:hover {
    background: var(--border);
}

.btn-logout {
    background: transparent;
    color: var(--text-muted);
    font-size: 0.82rem;
    margin-top: 1.5rem;
    padding: 0.5rem 1rem;
}
.btn-logout:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.user-detail {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: left;
    background: var(--bg);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
}

.user-detail dt {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-top: 0.75rem;
}
.user-detail dt:first-child { margin-top: 0; }

.user-detail dd {
    color: var(--text);
    font-size: 0.88rem;
    margin-top: 0.15rem;
    word-break: break-all;
}

.hidden { display: none; }

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--blue);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin-bottom: 1rem;
}
@keyframes spin { to { transform: rotate(360deg); } }