/* --- Base & Background --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  /* Base + warm / cool atmosphere (still dark-first) */
  background:
    radial-gradient(ellipse 120% 80% at 50% -30%, rgba(130, 125, 200, 0.12), transparent 55%),
    radial-gradient(ellipse 70% 50% at 100% 20%, rgba(90, 140, 200, 0.09), transparent 50%),
    radial-gradient(ellipse 55% 45% at 0% 85%, rgba(210, 175, 130, 0.07), transparent 45%),
    radial-gradient(circle at 15% 15%, rgba(255, 255, 255, 0.06), transparent 28%),
    radial-gradient(circle at 85% 88%, rgba(255, 255, 255, 0.04), transparent 32%),
    linear-gradient(168deg, #020202 0%, #080809 38%, #0c0c0e 72%, #0a0a0c 100%);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow: hidden;
}

/* Slow drifting light wash (adds life without loud color) */
.bg-mesh {
  position: fixed;
  inset: -20%;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 25% 35%, rgba(255, 245, 230, 0.055), transparent 42%),
    radial-gradient(circle at 78% 62%, rgba(170, 205, 255, 0.06), transparent 48%),
    radial-gradient(circle at 50% 100%, rgba(140, 130, 190, 0.05), transparent 50%);
  animation:
    ambient-drift 22s ease-in-out infinite alternate,
    ambient-breathe 9.5s ease-in-out infinite;
  opacity: 0.95;
  transform-origin: 50% 50%;
}

@keyframes ambient-drift {
  0% {
    transform: translate(-2%, -1%) rotate(0deg) scale(1);
  }
  50% {
    transform: translate(2%, 1%) rotate(0.5deg) scale(1.02);
  }
  100% {
    transform: translate(-1%, 2%) rotate(-0.3deg) scale(1.01);
  }
}

@keyframes ambient-breathe {
  0% {
    opacity: 0.84;
    transform: scale(0.985);
    filter: saturate(0.95);
  }
  50% {
    opacity: 1;
    transform: scale(1.02);
    filter: saturate(1.08);
  }
  100% {
    opacity: 0.88;
    transform: scale(0.99);
    filter: saturate(0.97);
  }
}

/* subtle floating orbs in background */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.22;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: screen;
  will-change: transform, opacity, filter;
}

.bg-orb-1 {
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(190, 175, 255, 0.45) 0%, rgba(45, 40, 60, 0.2) 55%, transparent 70%);
  top: -220px;
  left: -120px;
  animation:
    float-orb 18s ease-in-out infinite,
    orb-breathe 8.5s ease-in-out infinite;
}

.bg-orb-2 {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(120, 185, 230, 0.35) 0%, rgba(30, 45, 58, 0.18) 55%, transparent 70%);
  bottom: -160px;
  right: -110px;
  animation:
    float-orb 23s ease-in-out infinite reverse,
    orb-breathe 10.5s ease-in-out infinite reverse;
}

.bg-orb-3 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(235, 210, 175, 0.14) 0%, rgba(60, 48, 38, 0.1) 60%, transparent 72%);
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation:
    float-orb-soft 24s ease-in-out infinite,
    orb-breathe-soft 12s ease-in-out infinite;
  opacity: 0.18;
  mix-blend-mode: soft-light;
}

@keyframes float-orb-soft {
  0%,
  100% {
    transform: translate(-50%, -50%) translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-50%, -50%) translate(-24px, 18px) scale(1.06);
  }
}

@keyframes float-orb {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -40px) scale(1.05);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

@keyframes orb-breathe {
  0% {
    opacity: 0.16;
    filter: blur(102px);
  }
  50% {
    opacity: 0.28;
    filter: blur(92px);
  }
  100% {
    opacity: 0.18;
    filter: blur(100px);
  }
}

@keyframes orb-breathe-soft {
  0% {
    opacity: 0.12;
    filter: blur(108px);
  }
  50% {
    opacity: 0.24;
    filter: blur(96px);
  }
  100% {
    opacity: 0.14;
    filter: blur(104px);
  }
}

/* --- Glass card --- */
.glass-card {
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.07) 0%,
    rgba(255, 255, 255, 0.03) 45%,
    rgba(255, 255, 255, 0.02) 100%
  );
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.11);
  box-shadow:
    0 12px 44px rgba(0, 0, 0, 0.5),
    0 0 60px -24px rgba(130, 150, 210, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

/* --- Mic button --- */
.mic-btn-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mic-btn-wrapper::before {
  content: '';
  position: absolute;
  width: min(280px, 85vw);
  height: 120px;
  left: 50%;
  bottom: -36px;
  transform: translateX(-50%);
  background: radial-gradient(
    ellipse 70% 55% at 50% 50%,
    rgba(140, 160, 220, 0.2),
    rgba(100, 120, 180, 0.06) 45%,
    transparent 70%
  );
  filter: blur(22px);
  pointer-events: none;
  z-index: 0;
  animation: mic-pool 8s ease-in-out infinite alternate;
}

@keyframes mic-pool {
  0% {
    opacity: 0.75;
    transform: translateX(-50%) scale(1);
  }
  100% {
    opacity: 1;
    transform: translateX(-50%) scale(1.06);
  }
}

.pulse-ring {
  position: absolute;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.pulse-ring.active {
  opacity: 1;
}

.pulse-ring.active:nth-child(1) {
  animation: pulse-expand 2s ease-out infinite;
}

.pulse-ring.active:nth-child(2) {
  animation: pulse-expand 2s ease-out 0.5s infinite;
}

.pulse-ring.active:nth-child(3) {
  animation: pulse-expand 2s ease-out 1s infinite;
}

@keyframes pulse-expand {
  0% {
    transform: scale(1);
    opacity: 0.55;
    border-color: rgba(180, 195, 255, 0.42);
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
    border-color: rgba(120, 185, 220, 0);
  }
}

#mic-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.12), transparent 52%),
    linear-gradient(155deg, #2a2a2c 0%, #18181a 48%, #121214 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 10px 28px rgba(0, 0, 0, 0.58),
    0 0 40px -12px rgba(130, 155, 220, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

#mic-btn:hover {
  transform: scale(1.08);
  box-shadow:
    0 16px 36px rgba(0, 0, 0, 0.68),
    0 0 48px -10px rgba(150, 175, 235, 0.28),
    0 0 0 4px rgba(255, 255, 255, 0.06);
}

#mic-btn:active {
  transform: scale(0.95);
}

#mic-btn.recording {
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 200, 185, 0.1), transparent 55%),
    linear-gradient(155deg, #3a383a 0%, #222224 55%, #161618 100%);
  box-shadow:
    0 12px 32px rgba(0, 0, 0, 0.72),
    0 0 56px -8px rgba(200, 165, 230, 0.2),
    0 0 0 0 rgba(255, 255, 255, 0.06);
  animation: mic-glow 1.5s ease-in-out infinite alternate;
}

@keyframes mic-glow {
  0% {
    box-shadow:
      0 10px 28px rgba(0, 0, 0, 0.68),
      0 0 44px -6px rgba(170, 195, 255, 0.18),
      0 0 0 0 rgba(255, 255, 255, 0.04);
  }
  100% {
    box-shadow:
      0 12px 38px rgba(0, 0, 0, 0.82),
      0 0 64px -4px rgba(210, 180, 255, 0.22),
      0 0 0 10px rgba(255, 255, 255, 0.03);
  }
}

/* --- Shimmer loading effect --- */
.shimmer-line {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 20%,
    rgba(210, 220, 255, 0.14) 50%,
    rgba(255, 245, 235, 0.08) 80%
  );
  background-size: 200% 100%;
  border-radius: 4px;
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* --- Fade in animation --- */
.animate-fade-in {
  animation: fade-in 0.35s ease-out;
}

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

/* --- Chat area scrollbar --- */
#chat-area {
  scroll-behavior: smooth;
  overscroll-behavior-y: contain;
  scrollbar-color: rgba(255, 255, 255, 0.18) transparent;
  scrollbar-width: thin;
}

#chat-area::-webkit-scrollbar {
  width: 7px;
}

#chat-area::-webkit-scrollbar-track {
  background: transparent;
}

#chat-area::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  transition: background 0.2s;
}

#chat-area::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

#chat-area::-webkit-scrollbar-thumb:active {
  background: rgba(255, 255, 255, 0.45);
}

/* --- Chat bubbles --- */
.chat-row {
  display: flex;
  margin-bottom: 14px;
}

.chat-row-user {
  justify-content: flex-end;
}

.chat-row-ai {
  justify-content: flex-start;
}

.chat-bubble {
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 10px 26px rgba(0, 0, 0, 0.22),
    0 0 26px rgba(125, 150, 220, 0.08);
}

.chat-bubble-user {
  max-width: 78%;
  padding: 12px 14px;
  border-top-right-radius: 8px;
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 255, 255, 0.18), transparent 44%),
    linear-gradient(145deg, rgba(175, 205, 255, 0.17) 0%, rgba(120, 150, 220, 0.08) 48%, rgba(95, 120, 185, 0.1) 100%);
}

.chat-bubble-ai {
  max-width: min(86%, 680px);
  padding: 12px 14px;
  border-top-left-radius: 8px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 12%, rgba(255, 245, 230, 0.14), transparent 42%),
    linear-gradient(150deg, rgba(255, 255, 255, 0.1) 0%, rgba(220, 235, 255, 0.05) 55%, rgba(255, 255, 255, 0.04) 100%);
}

.chat-bubble-ai::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background:
    linear-gradient(
      118deg,
      rgba(140, 220, 255, 0) 18%,
      rgba(140, 220, 255, 0.36) 34%,
      rgba(205, 165, 255, 0.3) 47%,
      rgba(255, 196, 210, 0.34) 56%,
      rgba(140, 220, 255, 0) 72%
    );
  background-size: 220% 100%;
  mix-blend-mode: screen;
  transition: opacity 0.26s ease;
}

.chat-bubble-ai.ai-processing::after {
  opacity: 0.85;
  animation: ai-bubble-edge-flow 1.8s linear infinite;
}

@keyframes ai-bubble-edge-flow {
  0% {
    background-position: 190% 0;
  }
  100% {
    background-position: -30% 0;
  }
}

/* --- Streaming text reveal --- */
.stream-char {
  opacity: 0;
  display: inline;
  animation: stream-char-in 0.18s ease-out forwards;
}

@keyframes stream-char-in {
  from {
    opacity: 0;
    filter: blur(4px);
  }
  to {
    opacity: 1;
    filter: blur(0);
  }
}

.stream-meta {
  animation: stream-meta-in 0.3s ease-out 0.4s both;
}

@keyframes stream-meta-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hotword-hit {
  display: inline;
  padding: 0 4px;
  margin: 0 1px;
  border-radius: 6px;
  color: rgba(245, 250, 255, 0.98);
  background: linear-gradient(130deg, rgba(110, 190, 255, 0.33), rgba(191, 142, 255, 0.28));
  border: 1px solid rgba(170, 210, 255, 0.3);
  box-shadow: 0 0 14px rgba(110, 190, 255, 0.14);
}

/* --- Replay button --- */
.replay-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.65);
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  flex-shrink: 0;
  margin-left: 4px;
}

.replay-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: white;
  border-color: rgba(255, 255, 255, 0.38);
  transform: scale(1.1);
}

.replay-btn.is-playing {
  color: rgba(125, 211, 252, 0.95);
  border-color: rgba(125, 211, 252, 0.45);
  background: rgba(125, 211, 252, 0.14);
  animation: replay-pulse 1s ease-in-out infinite;
}

@keyframes replay-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.chat-avatar {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.04));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.chat-bubble-float {
  animation: bubble-float-in 0.42s cubic-bezier(0.2, 0.72, 0.2, 1);
}

@keyframes bubble-float-in {
  0% {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
    filter: blur(3px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

.chat-bubble-discard {
  animation: bubble-discard 0.32s cubic-bezier(0.4, 0, 1, 1) forwards;
  overflow: hidden;
}

@keyframes bubble-discard {
  0% {
    opacity: 1;
    max-height: 120px;
    margin-top: 0;
    margin-bottom: 0;
  }
  50% {
    opacity: 0;
    transform: scale(0.96);
  }
  100% {
    opacity: 0;
    max-height: 0;
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
  }
}

/* --- Hotword panel --- */
.hotword-card {
  border-color: rgba(190, 215, 255, 0.2);
  box-shadow:
    0 14px 40px rgba(0, 0, 0, 0.38),
    0 0 56px -24px rgba(130, 180, 255, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.hotword-input {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  color: white;
  caret-color: rgba(175, 210, 255, 0.9);
  padding: 8px 14px;
  outline: none;
  font-size: 14px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.hotword-input:focus {
  border-color: rgba(195, 215, 255, 0.45);
  box-shadow:
    0 0 0 3px rgba(170, 205, 255, 0.12),
    0 0 26px rgba(150, 180, 255, 0.18),
    inset 0 0 18px rgba(140, 170, 245, 0.08);
  animation: hotword-caret-gradient-blink 1.05s ease-in-out infinite;
}

.hotword-input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.asr-lang-select {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.92);
  padding: 7px 12px;
  outline: none;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.asr-lang-select:focus {
  border-color: rgba(195, 215, 255, 0.45);
  box-shadow: 0 0 0 2px rgba(170, 205, 255, 0.12);
}

.asr-lang-select option {
  background: #1a1f2e;
  color: #e8ecff;
}

.hotword-textarea {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  color: white;
  padding: 10px 14px;
  outline: none;
  font-size: 13px;
  line-height: 1.45;
  resize: vertical;
  min-height: 84px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.hotword-textarea:focus {
  border-color: rgba(195, 215, 255, 0.45);
  box-shadow:
    0 0 0 3px rgba(170, 205, 255, 0.12),
    0 0 26px rgba(150, 180, 255, 0.18),
    inset 0 0 18px rgba(140, 170, 245, 0.08);
}

.hotword-textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.hotword-extract-status {
  font-size: 11px;
  border-radius: 999px;
  padding: 2px 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.75);
  background: rgba(255, 255, 255, 0.06);
}

.hotword-extract-status.is-loading {
  color: rgba(186, 230, 253, 0.95);
  border-color: rgba(125, 211, 252, 0.35);
  background: rgba(14, 116, 144, 0.2);
}

.hotword-extract-status.is-success {
  color: rgba(209, 250, 229, 0.95);
  border-color: rgba(110, 231, 183, 0.35);
  background: rgba(6, 95, 70, 0.22);
}

.hotword-extract-status.is-error {
  color: rgba(254, 205, 211, 0.95);
  border-color: rgba(251, 113, 133, 0.35);
  background: rgba(136, 19, 55, 0.26);
}

#hotword-extract-btn.is-attention {
  animation: extract-btn-slow-pulse 2.6s ease-in-out infinite;
}

@keyframes extract-btn-slow-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(125, 211, 252, 0.18);
    filter: brightness(1);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(125, 211, 252, 0.06);
    filter: brightness(1.08);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(125, 211, 252, 0.18);
    filter: brightness(1);
  }
}

@keyframes hotword-caret-gradient-blink {
  0% {
    caret-color: rgba(140, 210, 255, 0.95);
  }
  35% {
    caret-color: rgba(206, 160, 255, 1);
  }
  60% {
    caret-color: rgba(255, 194, 208, 0.95);
  }
  100% {
    caret-color: rgba(140, 210, 255, 0.95);
  }
}

.hotword-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.hotword-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.hotword-switch-track {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  transition: all 0.24s ease;
}

.hotword-switch-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28);
  transition: transform 0.24s ease, background-color 0.24s ease;
}

.hotword-switch input:checked + .hotword-switch-track {
  border-color: rgba(146, 208, 255, 0.5);
  background: linear-gradient(140deg, rgba(95, 185, 255, 0.38), rgba(173, 140, 255, 0.34));
}

.hotword-switch input:checked + .hotword-switch-track::after {
  transform: translateX(18px);
  background: rgba(245, 250, 255, 0.95);
}

.hotword-switch-label {
  letter-spacing: 0.4px;
}

/* --- Toggle arrow --- */
.toggle-arrow {
  transition: transform 0.3s ease;
  display: inline-block;
}

/* --- Responsive --- */
@media (max-width: 640px) {
  #mic-btn {
    width: 64px;
    height: 64px;
  }

  .pulse-ring {
    width: 64px;
    height: 64px;
  }
}