*{
    box-sizing: border-box;
}
/* 🌗 Motyw ciemny (domyślny) */
body.night {
  font-family: "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #2c2c2c, #1a1a1a);
  color: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ☀️ Motyw jasny */
body.day {
  font-family: "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #f7f7f7, #eaeaea);
  color: #111;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ====== HEADER ====== */
header {
  background: linear-gradient(90deg, #444, #832d2d);
  padding: 15px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
  color: whitesmoke;
}

header h1 {
  font-size: 22px;
  margin: 0;
}

/* ====== FOOTER ====== */
footer {
  background: #1e1e1e;
  padding: 15px 20px;
  text-align: center;
  font-size: 14px;
  color: #bbb;
  border-top: 1px solid #333;
  margin-top: auto; /* zawsze na dole */
}

body.day footer {
  background: #f1f1f1;
  color: #444;
  border-top: 1px solid #ccc;
}

footer a {
  color: #d32f2f;
  text-decoration: none;
}

/* ====== CHAT ====== */
.chat-container {
  display: flex;
  flex-direction: column;
  background: #1a1a1a;
  border-radius: 20px;
  width: 95%;
  height: 90vh;
  max-width: 480px; /* 📱 domyślnie telefon */
  margin: 20px auto;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

body.day .chat-container {
  background: #fff;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

/* 🖥️ Dla większych ekranów */
@media (min-width: 769px) {
  .chat-container {
    width: 80%;
    max-width: 1000px;
    height: 80vh;
  }
}
@media (max-width: 770px){
    header{
        flex-direction: column;
    }
}

/* ====== WIADOMOŚCI ====== */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}

.msg {
  padding: 12px 16px;
  border-radius: 16px;
  max-width: 70%;
  word-wrap: break-word;
  font-size: 0.95rem;
  line-height: 1.4;
  animation: fadeIn 0.3s ease;
}

.msg.user {
  background: #444;
  align-self: flex-end;
  color: white;
}

.msg.ai {
  background: #2a2a2a;
  align-self: flex-start;
  color: white;
}

/* ====== INPUT BAR ====== */
.input-bar {
  display: flex;
  align-items: center;
  padding: 10px;
  gap: 8px;
  background: #2c2c2c;
}

body.day .input-bar {
  background: #eaeaea;
}

.input-bar input {
  flex: 1;
  padding: 10px 15px;
  border-radius: 20px;
  border: none;
  outline: none;
  background: #333;
  color: #fff;
  font-size: 1rem;
}

body.day .input-bar input {
  background: #fff;
  color: #111;
  border: 1px solid #ccc;
}

.input-bar button {
  background: #444;
  border: none;
  color: #fff;
  padding: 10px 14px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  transition: 0.2s;
}

.input-bar button:hover {
  background: #666;
}

/* ====== DODATKOWE PRZYCISKI ====== */
.btn {
  background: #d32f2f;
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.3s;
  text-decoration: none;
}

.btn:hover {
  background: #b71c1c;
}

/* 🔊 Ikona głośnika */
#speakerBtn {
  font-size: 22px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto; /* przesuwa na prawo */
  padding: 6px;
}

/* Animacje */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.video-bg-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.video-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  z-index: -1; /* tło pod chat */
  transform: translate(-50%, -50%);
  object-fit: cover; /* wypełnia cały ekran */
}