:root {
  --green: #128C7E;
  --green-dark: #075E54;
  --bg: #ece5dd;
  --panel: #ffffff;
  --border: #e0e0e0;
  --bubble-out: #dcf8c6;
  --bubble-in: #ffffff;
  --text: #222;
  --muted: #667781;
}

* { box-sizing: border-box; }

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

.topbar {
  background: var(--green-dark);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
}

.topbar .user-info {
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar button, .btn {
  background: var(--green);
  color: #fff;
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}

.topbar button:hover, .btn:hover { background: #0e6b5f; }

/* ---- Login page ---- */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.login-card {
  background: var(--panel);
  padding: 32px;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
  width: 320px;
}

.login-card h2 { margin-top: 0; color: var(--green-dark); }

.login-card input {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.error-msg {
  color: #c0392b;
  font-size: 13px;
  margin-bottom: 10px;
}

/* ---- Inbox ---- */
.contact-list {
  max-width: 720px;
  margin: 20px auto;
  background: var(--panel);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.contact-row {
  display: block;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
}

.contact-row:hover { background: #f5f5f5; }

.contact-row .name { font-weight: 600; }
.contact-row .wa-id { color: var(--muted); font-size: 13px; margin-left: 8px; }
.contact-row .updated { float: right; color: var(--muted); font-size: 12px; }

.empty-state {
  padding: 40px;
  text-align: center;
  color: var(--muted);
}

/* ---- Chat ---- */
.chat-wrap {
  max-width: 720px;
  margin: 0 auto;
  height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
}

.chat-header {
  background: var(--green-dark);
  color: #fff;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-header a { color: #cfe; text-decoration: none; font-size: 20px; }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bubble {
  max-width: 65%;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.4;
  position: relative;
}

.bubble.inbound {
  background: var(--bubble-in);
  align-self: flex-start;
  border: 1px solid var(--border);
}

.bubble.outbound {
  background: var(--bubble-out);
  align-self: flex-end;
}

.bubble .meta {
  font-size: 10px;
  color: var(--muted);
  margin-top: 4px;
  text-align: right;
}

.bubble.failed .meta { color: #c0392b; }

.reply-bar {
  display: flex;
  padding: 12px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  gap: 8px;
}

.reply-bar input {
  flex: 1;
  padding: 10px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-size: 14px;
}

.reply-bar button {
  background: var(--green);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 20px;
  cursor: pointer;
}