app/static/css/style.css

/* CSS Variables */
:root {
  --primary: #6d5ce7;
  --primary-light: #a29bfe;
  --primary-dark: #4a3db0;
  --primary-glow: rgba(109, 92, 231, 0.35);
  --accent: #5f72f3;
  --accent-light: #7c8cf8;
  --success: #00cec9;
  --danger: #ff6b6b;
  --warning: #feca57;
  --bg-dark: #080816;
  --bg-card: rgba(15, 15, 35, 0.65);
  --bg-card-solid: #0f0f23;
  --bg-surface: rgba(20, 20, 50, 0.5);
  --border-color: rgba(109, 92, 231, 0.12);
  --border-hover: rgba(109, 92, 231, 0.35);
  --text-white: #eef0ff;
  --text-secondary: #a0a8c8;
  --text-muted: #5c6280;
  --font-main: "Inter", "Noto Sans Sinhala", system-ui, sans-serif;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

/* Reset & Base */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  min-height: 100vh;
  color: var(--text-white);
  overflow-x: hidden;
}

/* Three.js Background Canvas */
#bgCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* App Wrapper */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 8px 24px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* ========== TOP BAR ========== */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
}

.top-bar-left {
  display: flex;
  align-items: center;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius-full);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
  animation: pulse-glow 2s ease-in-out infinite;
}

.status-dot.recording {
  background: var(--danger);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
  animation: pulse-glow 0.5s ease-in-out infinite;
}

.status-dot.processing {
  background: var(--warning);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.6);
  animation: pulse-glow 0.8s ease-in-out infinite;
}

.status-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--success);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.top-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-main);
  border: 1px solid var(--border-color);
}

.lang-toggle-btn {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.lang-toggle-btn:hover {
  background: var(--primary-dark);
  box-shadow: 0 0 20px var(--primary-glow);
}

.lang-toggle-btn.si-mode {
  background: var(--accent);
  border-color: var(--accent);
}

.clear-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.clear-btn:hover {
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.08);
}

/* ========== HERO ========== */
.hero {
  text-align: center;
  padding: 10px 20px 0;
}

.hero.compact {
  padding: 30px 20px 20px;
}

.hero.compact .hero-top-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 4px;
}

.hero.compact .hero-badge {
  margin-bottom: 0;
}

.hero.compact .hero-title {
  font-size: 2.6rem;
  margin-bottom: 0;
}

.hero.compact .hero-desc {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.hero.compact .hero-desc i {
  color: var(--primary-light);
  font-size: 1rem;
}

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: var(--primary);
  color: white;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  margin-bottom: 18px;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--primary-light),
    var(--primary),
    var(--accent-light)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 8px;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ========== INFO BANNER ========== */
.info-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
}

.info-banner i {
  font-size: 1.3rem;
  color: var(--primary-light);
}

.info-banner span {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ========== MAIN CONTENT ========== */
.main-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* ========== MIC AREA ========== */
.mic-area {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6px 20px 4px;
}

.mic-area.no-box {
  background: none;
  border: none;
  border-radius: 0;
  backdrop-filter: none;
  overflow: visible;
}

.mic-area.no-box::before {
  display: none;
}

/* Recording Timer */
.recording-timer {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-full);
  border: 1px solid rgba(239, 68, 68, 0.3);
  margin-bottom: 20px;
  z-index: 2;
}

.recording-timer.active {
  display: flex;
}

.timer-dot {
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: 50%;
  animation: blink 1s infinite;
}

.timer-text {
  font-family: "JetBrains Mono", monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--danger);
}

/* Mic Row - inline mic + reset */
.mic-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  z-index: 2;
}

/* Reset Row - right aligned above chat */
.reset-row {
  display: flex;
  justify-content: flex-end;
}

/* Mic Wrapper & Glow Rings */
.mic-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 140px;
  height: 140px;
  z-index: 2;
}

.mic-glow-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(109, 92, 231, 0.2);
  pointer-events: none;
}

.mic-glow-ring.ring-1 {
  width: 90px;
  height: 90px;
  border-color: rgba(109, 92, 231, 0.25);
  box-shadow: 0 0 15px rgba(109, 92, 231, 0.08);
}

.mic-glow-ring.ring-2 {
  width: 115px;
  height: 115px;
  border-color: rgba(109, 92, 231, 0.15);
  box-shadow: 0 0 25px rgba(109, 92, 231, 0.05);
}

.mic-glow-ring.ring-3 {
  width: 140px;
  height: 140px;
  border-color: rgba(109, 92, 231, 0.08);
}

.mic-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-size: 1.6rem;
  cursor: pointer;
  position: relative;
  z-index: 3;
  transition: all 0.3s ease;
  box-shadow:
    0 8px 32px var(--primary-glow),
    0 0 60px rgba(109, 92, 231, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mic-btn:hover {
  transform: scale(1.08);
  box-shadow:
    0 12px 40px var(--primary-glow),
    0 0 80px rgba(109, 92, 231, 0.2);
}

.mic-btn:active {
  transform: scale(0.98);
}

.mic-btn.recording {
  background: linear-gradient(135deg, var(--danger), #e55050);
  box-shadow: 0 8px 32px rgba(255, 107, 107, 0.4);
  animation: pulse-btn 1s infinite;
}

.mic-btn.recording ~ .mic-glow-ring {
  border-color: rgba(255, 107, 107, 0.2);
  animation: ring-pulse 1.5s ease-in-out infinite;
}

.mic-btn.recording i::before {
  content: "\f04d";
}

/* Audio Visualizer */
.visualizer {
  display: none;
  align-items: flex-end;
  gap: 5px;
  height: 40px;
  margin-top: 20px;
  z-index: 2;
}

.visualizer.active {
  display: flex;
}

.visualizer .bar {
  width: 6px;
  background: linear-gradient(to top, var(--primary), var(--accent-light));
  border-radius: 3px;
  animation: visualize 0.5s ease infinite;
}

.visualizer .bar:nth-child(1) {
  animation-delay: 0s;
  height: 15px;
}
.visualizer .bar:nth-child(2) {
  animation-delay: 0.1s;
  height: 25px;
}
.visualizer .bar:nth-child(3) {
  animation-delay: 0.2s;
  height: 35px;
}
.visualizer .bar:nth-child(4) {
  animation-delay: 0.3s;
  height: 20px;
}
.visualizer .bar:nth-child(5) {
  animation-delay: 0.4s;
  height: 30px;
}

/* Reset Button */
.reset-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-main);
  z-index: 2;
}

.reset-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
  border-color: var(--border-hover);
}

/* ========== CHAT MESSAGES ========== */
.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.message-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 22px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  transition: border-color 0.3s ease;
}

.message-card:hover {
  border-color: var(--border-hover);
}

.message-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.user-avatar {
  background: linear-gradient(
    135deg,
    rgba(109, 92, 231, 0.2),
    rgba(95, 114, 243, 0.2)
  );
  color: var(--primary-light);
  border: 1px solid rgba(109, 92, 231, 0.3);
}

.bot-avatar {
  background: linear-gradient(
    135deg,
    rgba(0, 206, 201, 0.15),
    rgba(95, 114, 243, 0.15)
  );
  color: var(--accent-light);
  border: 1px solid rgba(95, 114, 243, 0.3);
}

.message-body {
  flex: 1;
  min-width: 0;
}

.message-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.message-text {
  line-height: 1.7;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.message-text p {
  color: var(--text-secondary);
}

.message-text .placeholder {
  color: var(--text-muted);
  font-style: italic;
}

/* Message Actions (Speak / Pause) - Top Right inside bot card */
.bot-card {
  position: relative;
}

.message-actions-top {
  position: absolute;
  top: 12px;
  right: 14px;
  display: flex;
  gap: 6px;
  z-index: 2;
}

.action-btn-sm {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-main);
}

.action-btn-sm:hover:not(:disabled) {
  background: rgba(109, 92, 231, 0.15);
  color: var(--primary-light);
  border-color: var(--border-hover);
}

.action-btn-sm:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.action-btn-sm.playing {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Legacy action-btn (keep for compatibility) */
.message-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
  align-self: center;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 60px;
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-main);
}

.action-btn i {
  font-size: 1.1rem;
}

.action-btn:hover:not(:disabled) {
  background: rgba(109, 92, 231, 0.15);
  color: var(--primary-light);
  border-color: var(--border-hover);
}

.action-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.action-btn.playing {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ========== SOURCE BADGES ========== */
.source-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.source-rag {
  background: rgba(0, 206, 201, 0.15);
  color: #00cec9;
  border: 1px solid rgba(0, 206, 201, 0.3);
}

.source-gemini {
  background: rgba(109, 92, 231, 0.15);
  color: var(--primary-light);
  border: 1px solid rgba(109, 92, 231, 0.3);
}

/* ========== TRANSLATED TEXT ========== */
.translated-text {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--text-white) !important;
}

.original-text {
  color: var(--text-muted) !important;
  font-size: 0.85rem;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
}

.original-text i {
  margin-right: 4px;
  color: var(--primary-light);
}

/* ========== LOADING OVERLAY ========== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 8, 22, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(12px);
}

.loading-overlay.active {
  display: flex;
}

.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

/* Loader Visual - Triple ring spinner */
.loader-visual {
  position: relative;
  width: 100px;
  height: 100px;
}

.loader-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid transparent;
}

.loader-ring:nth-child(1) {
  width: 100px;
  height: 100px;
  top: 0;
  left: 0;
  border-top-color: var(--primary);
  border-right-color: var(--primary);
  animation: loader-spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  filter: drop-shadow(0 0 6px var(--primary-glow));
}

.loader-ring:nth-child(2) {
  width: 76px;
  height: 76px;
  top: 12px;
  left: 12px;
  border-bottom-color: var(--accent);
  border-left-color: var(--accent);
  animation: loader-spin-reverse 1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  filter: drop-shadow(0 0 6px rgba(95, 114, 243, 0.35));
}

.loader-ring:nth-child(3) {
  width: 52px;
  height: 52px;
  top: 24px;
  left: 24px;
  border-top-color: var(--primary-light);
  border-right-color: var(--accent-light);
  animation: loader-spin 0.8s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  filter: drop-shadow(0 0 4px rgba(162, 155, 254, 0.3));
}

.loader-core {
  position: absolute;
  width: 36px;
  height: 36px;
  top: 32px;
  left: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--primary-light);
  animation: loader-pulse 1.5s ease-in-out infinite;
}

/* Loader Text */
.loader-text-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.loader-text-area p {
  color: var(--text-white);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.loader-dots {
  display: flex;
  gap: 6px;
}

.loader-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
  animation: loader-dot-bounce 1.2s ease-in-out infinite;
}

.loader-dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.loader-dots span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes loader-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes loader-spin-reverse {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(-360deg);
  }
}

@keyframes loader-pulse {
  0%,
  100% {
    opacity: 0.6;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.15);
  }
}

@keyframes loader-dot-bounce {
  0%,
  80%,
  100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  40% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* ========== ANIMATIONS ========== */
@keyframes pulse-glow {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

@keyframes pulse-btn {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.06);
  }
}

@keyframes ring-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.05);
    opacity: 1;
  }
}

@keyframes visualize {
  0%,
  100% {
    transform: scaleY(0.5);
  }
  50% {
    transform: scaleY(1.3);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .app-wrapper {
    padding: 14px 16px 30px;
    gap: 20px;
  }

  .top-bar {
    padding: 12px 16px;
    border-radius: var(--radius-md);
  }

  .top-btn span {
    display: none;
  }

  .top-btn {
    padding: 10px 14px;
  }

  .hero.compact .hero-title {
    font-size: 1.6rem;
  }

  .hero-desc {
    font-size: 0.88rem;
  }

  .mic-btn {
    width: 58px;
    height: 58px;
    font-size: 1.4rem;
  }

  .mic-glow-ring.ring-1 {
    width: 80px;
    height: 80px;
  }
  .mic-glow-ring.ring-2 {
    width: 100px;
    height: 100px;
  }
  .mic-glow-ring.ring-3 {
    width: 120px;
    height: 120px;
  }

  .mic-area {
    padding: 24px 16px 20px;
  }

  .message-card {
    padding: 16px 18px;
  }

  .message-actions {
    flex-direction: row;
  }

  .action-btn {
    width: 50px;
    padding: 10px 6px;
    font-size: 0.68rem;
  }
}

@media (max-width: 480px) {
  .hero.compact .hero-title {
    font-size: 1.4rem;
  }

  .mic-btn {
    width: 68px;
    height: 68px;
    font-size: 1.7rem;
  }

  .status-indicator {
    padding: 6px 14px;
  }

  .status-text {
    font-size: 0.82rem;
  }

  .info-banner {
    padding: 14px 18px;
  }
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(109, 92, 231, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(109, 92, 231, 0.5);
}

::selection {
  background: var(--primary);
  color: white;
}