:root { color-scheme: dark; }
* { box-sizing: border-box; }

body {
    margin: 0;
    background: #12151a;
    color: #e6e8eb;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
}

.container { max-width: 640px; margin: 0 auto; padding: 2rem 1.25rem; }

.card {
    background: #1b1f27;
    border: 1px solid #2a2f3a;
    border-radius: 10px;
    padding: 1.75rem;
    margin-bottom: 1.25rem;
}

h1 { font-size: 1.5rem; margin-top: 0; }
h2 { font-size: 1.15rem; }
a { color: #6ea8fe; }

label { display: block; margin: .9rem 0 .3rem; font-size: .9rem; color: #b3b8c2; }

input[type=text], input[type=email], input[type=password] {
    width: 100%;
    padding: .6rem .7rem;
    border-radius: 6px;
    border: 1px solid #333947;
    background: #12151a;
    color: #e6e8eb;
    font-size: 1rem;
}

.btn, button {
    display: inline-block;
    margin-top: 1.1rem;
    margin-right: .5rem;
    padding: .6rem 1.1rem;
    border-radius: 6px;
    border: none;
    background: #6ea8fe;
    color: #0b0d10;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    font-size: .95rem;
}

.btn-secondary { background: transparent; border: 1px solid #333947; color: #e6e8eb; }
.btn-danger { background: #ff6b6b; }

.message { padding: .75rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: .9rem; }
.message-error { background: #3a1c1c; border: 1px solid #6b2f2f; color: #ffb3b3; }
.message-ok { background: #1c3a24; border: 1px solid #2f6b41; color: #b3ffc4; }

table { width: 100%; border-collapse: collapse; margin-top: .5rem; }
th, td { text-align: left; padding: .5rem .4rem; border-bottom: 1px solid #2a2f3a; font-size: .9rem; }

code { background: #12151a; border: 1px solid #2a2f3a; padding: .1rem .4rem; border-radius: 4px; }
pre { background: #12151a; border: 1px solid #2a2f3a; padding: .8rem; border-radius: 6px; overflow-x: auto; }

nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
nav a { text-decoration: none; }

.muted { color: #8892a0; font-size: .85rem; }
ul { padding-left: 1.2rem; }