* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0a0a0a;
  color: #e0e0e0;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  height: 100vh;
  overflow: hidden;
}

.screen {
  display: none;
  width: 100vw;
  height: 100vh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.screen.active {
  display: flex;
}

/* --- Login screen --- */
#login-screen h1 {
  font-size: clamp(1.8rem, 6vw, 3rem);
  font-weight: 200;
  letter-spacing: 0.3em;
  text-transform: lowercase;
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 0.9rem;
  color: #666;
  text-align: center;
  margin-bottom: 2rem;
  line-height: 1.6;
}

#google-signin-btn {
  padding: 0.8rem 2rem;
  font-size: 1rem;
}

button {
  background: #1a1a1a;
  border: 1px solid #333;
  color: #e0e0e0;
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #2a2a2a;
}

/* --- Waiting room --- */
#waiting-screen {
  justify-content: flex-start;
  padding-top: 40px;
}

#waiting-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

#waiting-header h2 {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.2em;
}

#my-profile {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

#my-photo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

#my-name {
  font-size: 0.9rem;
  color: #aaa;
}

#signout-btn {
  font-size: 0.75rem;
  padding: 0.3rem 0.8rem;
  color: #888;
  border-color: #2a2a2a;
}

#user-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: min(340px, 90vw);
  max-height: 500px;
  overflow-y: auto;
}

.user-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #141414;
  border: 1px solid #222;
  padding: 0.7rem 1rem;
  border-radius: 4px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.user-photo {
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.user-card .name {
  font-size: 0.95rem;
}

.user-card button {
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
}

.user-card.self {
  border-color: #333;
  opacity: 0.5;
}

/* --- Incoming call modal --- */
.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #1a1a1a;
  border: 1px solid #333;
  padding: 2rem;
  border-radius: 8px;
  text-align: center;
  z-index: 100;
}

#caller-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

#caller-photo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

#caller-info p {
  font-size: 1.1rem;
}

.modal-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

#accept-btn {
  border-color: #4a4;
}

#accept-btn:hover {
  background: #1a2a1a;
}

#decline-btn {
  border-color: #a44;
}

#decline-btn:hover {
  background: #2a1a1a;
}

.hidden {
  display: none !important;
}

/* --- Call screen --- */
#call-screen {
  position: relative;
}

#canvas-container {
  width: 100vw;
  height: 100vh;
}

#canvas-container canvas {
  display: block;
}

#local-video {
  position: fixed;
  bottom: 80px;
  right: 12px;
  width: min(180px, 30vw);
  border-radius: 8px;
  border: 1px solid #333;
  z-index: 10;
}

#call-controls {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

#hangup-btn {
  border-color: #a44;
  padding: 0.7rem 2rem;
}

#hangup-btn:hover {
  background: #2a1a1a;
}

#gaze-debug {
  position: fixed;
  top: 10px;
  left: 10px;
  font-size: 0.85rem;
  color: #fff;
  background: rgba(0,0,0,0.7);
  padding: 6px 10px;
  border-radius: 4px;
  z-index: 9999;
}