:root {
  --bg: #0b141a;
  --panel: #111b21;
  --header: #1f2c34;
  --bubble-visitor: #005c4b;
  --bubble-admin: #202c33;
  --text: #e9edef;
  --text-dim: #8696a0;
  --accent: #00a884;
  --danger: #f15c6d;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.hidden { display: none !important; }

/* ===== Gate ===== */
.gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.gate-card {
  background: var(--panel);
  border-radius: 16px;
  padding: 32px 24px;
  max-width: 380px;
  width: 100%;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}

.gate-icon { font-size: 40px; margin-bottom: 8px; }

.gate-card h1 { font-size: 20px; margin: 0 0 8px; }

.gate-card p { color: var(--text-dim); font-size: 14px; margin: 0 0 20px; line-height: 1.5; }

.gate-card input[type="text"]:not(.hp-field) {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #2a3942;
  background: #0b141a;
  color: var(--text);
  font-size: 15px;
  margin-bottom: 16px;
  outline: none;
}

.gate-card input[type="text"]:focus { border-color: var(--accent); }

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.gate-card button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #04120e;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
}

.gate-card button:active { opacity: 0.85; }

.gate-error {
  color: var(--danger);
  font-size: 13px;
  min-height: 18px;
  margin-top: 12px;
}

/* ===== Chat screen ===== */
.chat-screen {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
}

.chat-header {
  background: var(--header);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.chat-header-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #04120e;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.chat-header-name { font-weight: 600; font-size: 15px; }
.chat-header-status { font-size: 12px; color: var(--text-dim); }

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.03) 1px, transparent 0);
  background-size: 18px 18px;
}

.bubble {
  max-width: 78%;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 14.5px;
  line-height: 1.4;
  word-wrap: break-word;
  white-space: pre-wrap;
  position: relative;
  animation: pop 0.15s ease-out;
}

@keyframes pop {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.bubble.visitor {
  align-self: flex-end;
  background: var(--bubble-visitor);
  border-bottom-right-radius: 2px;
}

.bubble.admin {
  align-self: flex-start;
  background: var(--bubble-admin);
  border-bottom-left-radius: 2px;
}

.bubble .time {
  display: block;
  font-size: 10.5px;
  color: rgba(233,237,239,0.6);
  margin-top: 2px;
  text-align: right;
}

.bubble.pending { opacity: 0.6; }

.system-note {
  align-self: center;
  color: var(--text-dim);
  font-size: 12px;
  background: rgba(255,255,255,0.05);
  padding: 4px 10px;
  border-radius: 8px;
  margin: 8px 0;
}

.composer {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 12px;
  background: var(--header);
  flex-shrink: 0;
}

.composer textarea {
  flex: 1;
  resize: none;
  max-height: 120px;
  padding: 10px 14px;
  border-radius: 20px;
  border: none;
  background: #2a3942;
  color: var(--text);
  font-size: 14.5px;
  font-family: inherit;
  outline: none;
}

.composer button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #04120e;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
}

.composer button:disabled { opacity: 0.5; }