:root {
    --bg: #0a0e1a;
    --card: #1a1f2b;
    --text: #e5e7eb;
    --text-dim: #9ca3af;
    --border: rgba(255,255,255,0.08);
    --accent: #60a5fa;
    --error: #f87171;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    padding: 16px;
}

.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    width: 100%;
    max-width: 360px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.login-card h1 { margin: 0 0 8px 0; font-size: 22px; }
.login-card .hint { margin: 0 0 24px 0; color: var(--text-dim); font-size: 14px; }
.login-card .footer { margin: 16px 0 0 0; font-size: 12px; color: var(--text-dim); }

.login-card input {
    display: block;
    width: 100%;
    padding: 12px 14px;
    min-height: 44px;
    background: #0f1419;
    border: 1px solid #374151;
    border-radius: 8px;
    color: var(--text);
    font-size: 16px;
    margin-bottom: 12px;
}

.login-card input:focus { outline: none; border-color: var(--accent); }

.login-card button {
    display: block;
    width: 100%;
    padding: 12px 14px;
    min-height: 44px;
    background: var(--accent);
    color: #0a0e1a;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.login-card button:hover { background: #82b8ff; }
.login-card #error { color: var(--error); font-size: 14px; margin-top: 12px; min-height: 18px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }