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

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

:root {
    --bg: #0f1117;
    --surface: #181c27;
    --border: #252a38;
    --text: #e2e8f0;
    --muted: #64748b;
    --accent: #38bdf8;
    --success: #4ade80;
    --danger: #f87171;
    --mono: 'IBM Plex Mono', monospace;
    --sans: 'IBM Plex Sans', sans-serif;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 14px;
    min-height: 100vh;
}

h1 {
    font-family: var(--mono);
    font-size: 18px;
    margin-bottom: 24px;
    color: var(--accent);
    text-align: center;
    letter-spacing: .05em;
}

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

label {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    margin-bottom: 8px;
    text-transform: uppercase;
}

input {
    width: 100%;
    font-family: var(--mono);
    font-size: 13px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 9px 14px;
    outline: none;
    transition: border-color .15s;
}

input:focus {
    border-color: var(--accent);
}

.btn {
    font-family: var(--mono);
    font-size: 12px;
    padding: 7px 16px;
    border-radius: 4px;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all .15s;
    background: var(--surface);
    color: var(--text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn.primary {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    font-weight: 600;
}

.btn.primary:hover {
    opacity: .85;
    color: #000;
}

.btn.loading {
    opacity: .5;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 2px solid #000;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin .6s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

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