:root {
    --bg-0: #0e0f13;
    --bg-1: #15161b;
    --bg-2: #1a1c22;
    --border: #262832;
    --text: #dcddde;
    --text-muted: #8a8d94;
    --accent: #6c5ce7;
    --accent-hover: #7d70ea;
    --danger: #ed4245;
    --success: #3ba55c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg-0);
    color: var(--text);
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
}

a { color: inherit; text-decoration: none; }

input, select, button, textarea {
    font-family: inherit;
    font-size: 14px;
}

input[type=text], input[type=email], input[type=password] {
    background: var(--bg-0);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 9px 10px;
    border-radius: 6px;
    width: 100%;
}

button, .btn {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 9px 16px;
    border-radius: 6px;
    cursor: pointer;
}
button:hover, .btn:hover { background: var(--accent-hover); }

.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.auth-box {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 32px;
    width: 360px;
}
.auth-box h1 { font-size: 20px; margin: 0 0 6px; }
.auth-box p.sub { color: var(--text-muted); margin: 0 0 20px; font-size: 13px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; font-weight: 600; }
.error { color: var(--danger); font-size: 12px; margin-top: 4px; display: block; }
.auth-box .switch { margin-top: 16px; font-size: 13px; color: var(--text-muted); text-align: center; }
.auth-box .switch a { color: var(--accent); }

.app {
    display: flex;
    height: 100vh;
}
.servers-rail {
    width: 72px;
    background: var(--bg-0);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    gap: 10px;
    overflow-y: auto;
}
.server-icon {
    width: 44px; height: 44px; border-radius: 16px;
    background: var(--bg-2);
    display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: 13px;
    transition: border-radius .15s;
}
.server-icon.active, .server-icon:hover { border-radius: 12px; background: var(--accent); }
.server-icon.add { border: 1px dashed #444; color: var(--text-muted); background: transparent; }

.channels-col {
    width: 220px;
    background: var(--bg-1);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.channels-col .server-name { padding: 14px 16px; font-weight: 600; border-bottom: 1px solid var(--border); }
.channels-col .cat-label { padding: 14px 12px 4px; font-size: 11px; color: var(--text-muted); font-weight: 700; text-transform: uppercase; }
.channel-link { padding: 6px 10px; margin: 1px 8px; border-radius: 4px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.channel-link:hover { background: #1f2128; color: var(--text); }
.channel-link.active { background: #2b2d36; color: #fff; }
.user-footer { margin-top: auto; padding: 10px; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 8px; font-size: 12px; }
.avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:#fff; flex-shrink:0; }

.chat-col { flex: 1; display: flex; flex-direction: column; }
.chat-header { padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 600; }
#messages { flex: 1; padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.message { display: flex; gap: 10px; }
.message .avatar { margin-top: 2px; }
.message .meta { font-size: 12px; color: var(--text-muted); margin-left: 6px; }
.message .body { color: var(--text); }
.composer { padding: 12px 16px; border-top: 1px solid var(--border); }
.composer input { width: 100%; }

.empty-state { display:flex; flex-direction:column; align-items:center; justify-content:center; height:100%; color: var(--text-muted); gap: 12px; }