:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #14b8a6;
  --accent-hover: #0d9488;
  --danger: #f85149;
  --ok: #3fb950;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.nav-brand { font-weight: 700; }

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  margin-right: 20px;
}

.nav-links a:hover { color: var(--text); }

.nav-user {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
}

.nav-user a { color: var(--accent); text-decoration: none; }

.container {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 20px;
}

h1 { margin-bottom: 8px; }

.error { color: var(--danger); }
.ok { color: var(--ok); }

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 320px;
}

form { display: flex; flex-direction: column; }

label { margin: 12px 0 4px; font-size: 14px; color: var(--text-muted); }

input, textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}

button {
  margin-top: 20px;
  background: var(--accent);
  color: #04231f;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-weight: 600;
  cursor: pointer;
}

button:hover { background: var(--accent-hover); }

.qrcode {
  display: block;
  margin: 20px 0;
  max-width: 280px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.chat-list { list-style: none; padding: 0; }

.chat-list li {
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.chat-list a { color: var(--text); text-decoration: none; }
.chat-list a:hover { color: var(--accent); }

.messages {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.message {
  max-width: 70%;
  padding: 8px 12px;
  border-radius: 10px;
}

.message.from-me {
  align-self: flex-end;
  background: var(--accent);
  color: #04231f;
}

.message.from-them {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.jid-info { color: var(--text-muted); font-size: 13px; margin-top: -4px; }

.media-image, .media-video {
  max-width: 260px;
  border-radius: 8px;
  display: block;
  margin-bottom: 6px;
}

audio { display: block; margin-bottom: 6px; }

.download-link {
  display: inline-block;
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 6px;
}

.send-form {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.send-form textarea { flex: 1; margin: 0; }
.send-form button { margin: 0; white-space: nowrap; }

.send-form {
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
}

.send-form textarea {
  min-height: 90px;
  width: 100%;
}

.send-form input[type="file"] {
  padding: 8px 0;
  color: var(--text-muted);
  font-size: 13px;
}