/* Critical inline CSS — keeps first paint stable while real stylesheets load.
   Serves all routes (landing, login, app). Update if top-nav height, login-container
   layout, or base theme colors change. Keep under 3 KB. */

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #0f172a;
    background-color: #f8fafc;
    line-height: 1.65;
}
[data-theme='dark'] html,
[data-theme='dark'] body {
    color: #e2e8f0;
    background-color: #060b17;
}
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid #d9e2ec;
    z-index: 1000;
}
[data-theme='dark'] .top-nav {
    background: rgba(30, 41, 59, 0.88);
    border-bottom-color: #334155;
}
.login-container {
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
}