:root {
  --bg-1: #061622;
  --bg-2: #0b2536;
  --bg-3: #0e3f4c;
  --panel: rgba(8, 23, 34, 0.8);
  --panel-border: rgba(194, 224, 232, 0.26);
  --text-main: #f4fbff;
  --text-muted: #b8c9d4;
  --user-bubble: #1f8e83;
  --assistant-bubble: #123149;
  --button: #f3a53e;
  --button-hover: #ffc56f;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--text-main);
  font-family: "Manrope", sans-serif;
  background: radial-gradient(circle at 20% 0%, var(--bg-3), transparent 40%),
    radial-gradient(circle at 80% 20%, #175564, transparent 36%),
    linear-gradient(145deg, var(--bg-1), var(--bg-2));
  overflow: hidden;
}

.scene {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.mesh {
  position: absolute;
  filter: blur(60px);
  opacity: 0.35;
  border-radius: 50%;
  animation: drift 14s ease-in-out infinite;
}

.mesh-a {
  width: 28rem;
  height: 28rem;
  top: -4rem;
  right: -8rem;
  background: #2eb58f;
}

.mesh-b {
  width: 24rem;
  height: 24rem;
  left: -6rem;
  bottom: -5rem;
  background: #17718b;
  animation-delay: 2s;
}

.mesh-c {
  width: 18rem;
  height: 18rem;
  left: 48%;
  top: 62%;
  background: #ffb458;
  animation-delay: 5s;
}

@keyframes drift {
  0%,
  100% {
    transform: translateY(0) translateX(0) scale(1);
  }
  50% {
    transform: translateY(-18px) translateX(10px) scale(1.05);
  }
}

.app-shell {
  height: 100%;
  width: min(1100px, 96vw);
  margin: 0 auto;
  padding: 28px 12px 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.header-panel,
.chat-card {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  backdrop-filter: blur(14px);
  border-radius: 22px;
}

.header-panel {
  padding: 18px 18px 20px;
  transform: translateY(0);
  animation: float-in 0.7s ease-out;
}

.header-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

h1 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.2rem, 2vw, 1.8rem);
}

.online-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #d4f7e6;
  font-size: 0.84rem;
  text-transform: lowercase;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: #31d17c;
  box-shadow: 0 0 0 6px rgba(49, 209, 124, 0.18);
}

.control-row {
  margin-top: 12px;
  display: flex;
  justify-content: flex-end;
}

.ghost-btn {
  border: 1px solid rgba(194, 224, 232, 0.35);
  background: rgba(7, 20, 29, 0.45);
  color: var(--text-main);
  border-radius: 12px;
  font-family: "Sora", sans-serif;
  font-size: 0.8rem;
  padding: 8px 11px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.12s ease;
}

.ghost-btn:hover {
  background: rgba(47, 186, 164, 0.25);
  transform: translateY(-1px);
}

.ghost-btn.active {
  background: rgba(243, 165, 62, 0.22);
  border-color: rgba(243, 165, 62, 0.66);
  color: #ffddb1;
}

.chat-card {
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: float-in 0.85s ease-out;
}

@keyframes float-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-stream {
  flex: 1;
  padding: 18px 18px 8px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(241, 250, 255, 0.5) transparent;
}

.message {
  margin-bottom: 14px;
}

.bubble-wrap {
  position: relative;
}

.label {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.bubble {
  white-space: pre-wrap;
  line-height: 1.48;
  border-radius: 16px;
  padding: 11px 13px 36px;
  max-width: 900px;
}

.message.user .bubble {
  background: linear-gradient(130deg, var(--user-bubble), #2fbaa4);
}

.message.assistant .bubble {
  background: linear-gradient(130deg, #103146, var(--assistant-bubble));
  border: 1px solid rgba(194, 224, 232, 0.24);
}

.message.loading .bubble {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  padding-bottom: 11px;
}

.speak-msg-btn {
  position: absolute;
  right: 9px;
  bottom: 8px;
  border: 1px solid rgba(194, 224, 232, 0.32);
  background: rgba(7, 20, 29, 0.45);
  color: #cde4ef;
  font-size: 0.72rem;
  border-radius: 9px;
  padding: 3px 8px;
  cursor: pointer;
}

.speak-msg-btn:hover {
  background: rgba(47, 186, 164, 0.25);
}

.speak-msg-btn.active {
  background: rgba(243, 165, 62, 0.22);
  border-color: rgba(243, 165, 62, 0.66);
  color: #ffddb1;
}

.message.user .speak-msg-btn,
.message.loading .speak-msg-btn {
  display: none;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #d5ecf5;
  animation: pulse 1s infinite;
}

.dot:nth-child(2) {
  animation-delay: 0.2s;
}

.dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes pulse {
  0%,
  80%,
  100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-4px);
  }
}

.input-row {
  border-top: 1px solid rgba(194, 224, 232, 0.2);
  padding: 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

#message-input {
  resize: none;
  border: 1px solid rgba(194, 224, 232, 0.35);
  background: rgba(7, 20, 29, 0.7);
  color: var(--text-main);
  border-radius: 12px;
  font: inherit;
  line-height: 1.4;
  padding: 11px 12px;
  max-height: 140px;
}

#message-input:focus {
  outline: 2px solid rgba(243, 165, 62, 0.55);
  outline-offset: 1px;
}

.input-actions {
  display: inline-flex;
  align-items: flex-end;
}

#send-button {
  align-self: end;
  border: none;
  background: var(--button);
  color: #2b1a01;
  font-family: "Sora", sans-serif;
  font-size: 0.9rem;
  border-radius: 12px;
  padding: 10px 17px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}

#send-button:hover {
  background: var(--button-hover);
  transform: translateY(-1px);
}

#send-button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
  transform: none;
}

@media (min-width: 960px) {
  .app-shell {
    padding-top: 38px;
    grid-template-rows: auto 1fr;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: 100vw;
    padding: 10px;
  }

  .header-panel {
    padding: 14px;
  }

  .control-row {
    margin-top: 10px;
  }

  .ghost-btn {
    padding: 7px 10px;
    font-size: 0.75rem;
  }

  .chat-stream {
    padding: 14px 12px 6px;
  }

  .input-row {
    padding: 10px;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .input-actions {
    justify-content: flex-end;
  }

  #send-button {
    min-width: 84px;
  }
}