/* =========================================================
   NanoSub - Google Gemini AI Visual Design System
   Inspired by: https://design.google/library/gemini-ai-visual-design
   ========================================================= */

:root {
  /* Google Gemini Color Palette */
  --gemini-bg: #131314;
  --gemini-surface: #1e1f20;
  --gemini-surface-container: #282a2c;
  --gemini-surface-hover: #333538;
  --gemini-border: rgba(255, 255, 255, 0.08);
  --gemini-border-focus: rgba(138, 180, 248, 0.4);

  /* Gemini Spectrum Gradient Colors */
  --gemini-blue: #4285f4;
  --gemini-purple: #9b72cf;
  --gemini-coral: #d96570;
  --gemini-cyan: #24c6dc;

  /* Typography Colors */
  --text-primary: #e3e3e3;
  --text-secondary: #9aa0a6;
  --text-muted: #5f6368;
  --text-interim: #8ab4f8;
  --text-translated: #ffffff;

  /* Typography */
  --font-family: 'Outfit', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;

  /* Geometry & Shapes */
  --radius-card: 28px;
  --radius-pill: 9999px;
  --radius-sm: 12px;

  /* Elevation & Motion */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --transition-smooth: 0.3s var(--ease-standard);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--gemini-bg);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Diffuse Gemini Glow (Spectrum of light) */
.gemini-ambient-glow {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 650px;
  height: 480px;
  background: radial-gradient(
    ellipse at center,
    rgba(66, 133, 244, 0.12) 0%,
    rgba(155, 114, 207, 0.09) 35%,
    rgba(217, 101, 112, 0.05) 60%,
    transparent 80%
  );
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
  animation: breathe 8s ease-in-out infinite alternate;
}

@keyframes breathe {
  0% { transform: translate(-50%, -50%) scale(0.95); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

/* Main Container */
.nanosub-container {
  width: 100%;
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  z-index: 1;
}

/* Gemini Cards (Rounded Geometry) */
.gemini-card {
  position: relative;
  background: var(--gemini-surface);
  border-radius: var(--radius-card);
  padding: 2px; /* Border container */
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.gemini-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5);
}

.gemini-card-border-glow {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  padding: 1.5px;
  background: var(--gemini-border);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: all var(--transition-smooth);
}

/* Active Thinking / Listening Border Glow */
.gemini-card.listening .gemini-card-border-glow,
.gemini-card.translating .gemini-card-border-glow {
  background: linear-gradient(
    135deg,
    var(--gemini-blue) 0%,
    var(--gemini-purple) 50%,
    var(--gemini-coral) 100%
  );
  box-shadow: 0 0 25px rgba(66, 133, 244, 0.25);
}

.card-inner {
  background: var(--gemini-surface);
  border-radius: calc(var(--radius-card) - 2px);
  padding: 24px 30px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

/* Toolbars inside Cards */
.box-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

/* Google Pill Chips */
.lang-pill, .gemini-brand-pill, .lang-selector-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gemini-surface-container);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--gemini-border);
  transition: background var(--transition-smooth);
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gemini-blue);
  box-shadow: 0 0 8px rgba(66, 133, 244, 0.6);
}

.gemini-sparkle {
  animation: sparkle-pulse 3s infinite ease-in-out;
}

@keyframes sparkle-pulse {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.15) rotate(8deg); }
}

.model-badge {
  font-weight: 600;
  letter-spacing: -0.01em;
  background: linear-gradient(90deg, #8ab4f8, #c58af9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Gemini Mic Button (Google Pill Shape) */
.gemini-mic-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gemini-surface-container);
  border: 1px solid var(--gemini-border);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.gemini-mic-btn:hover {
  background: var(--gemini-surface-hover);
  border-color: var(--gemini-border-focus);
}

.mic-icon {
  color: var(--gemini-blue);
  transition: transform 0.2s ease, color 0.2s ease;
}

.gemini-mic-btn.recording {
  background: rgba(234, 67, 53, 0.15);
  border-color: rgba(234, 67, 53, 0.5);
  color: #f28b82;
  box-shadow: 0 0 20px rgba(234, 67, 53, 0.3);
}

.gemini-mic-btn.recording .mic-icon {
  color: #ea4335;
  animation: pulse-mic 1.2s infinite;
}

@keyframes pulse-mic {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* Minimal Language Select */
.gemini-select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
}

.gemini-select option {
  background: var(--gemini-surface);
  color: var(--text-primary);
}

/* Subtitle Content (Google Clean Typography) */
.subtitle-body {
  flex: 1;
  display: flex;
  align-items: center;
  font-size: 1.7rem;
  line-height: 1.45;
  word-break: break-word;
  letter-spacing: -0.02em;
}

.text-final {
  color: var(--text-primary);
  font-weight: 500;
}

.text-interim {
  color: var(--text-interim);
  font-weight: 400;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.text-translated {
  color: var(--text-translated);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  background: linear-gradient(180deg, #ffffff 30%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-translated.placeholder {
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
  font-style: italic;
  letter-spacing: 0;
}

/* Gemini Audio Wave Bar (Google 4-dot / Particle Flow) */
.gemini-wave-bar {
  display: none;
  align-items: center;
  gap: 6px;
  position: absolute;
  bottom: 16px;
  right: 28px;
}

.gemini-card.listening .gemini-wave-bar {
  display: flex;
}

.wave-particle {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: wave-bounce 1.1s infinite ease-in-out;
}

.wave-particle:nth-child(1) { background: #4285f4; animation-delay: 0s; }
.wave-particle:nth-child(2) { background: #ea4335; animation-delay: 0.15s; }
.wave-particle:nth-child(3) { background: #fbbc05; animation-delay: 0.3s; }
.wave-particle:nth-child(4) { background: #34a853; animation-delay: 0.45s; }

@keyframes wave-bounce {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(-8px); opacity: 1; }
}

/* =========================================================
   Gemini Nano Smart Notes (Hidden Context Audio Summarizer)
   ========================================================= */
.notes-card {
  margin-top: 4px;
}

.notes-inner {
  min-height: 170px;
}

.lab-title {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.notes-toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.context-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--gemini-border);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 5px 12px;
}

.memory-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #5f6368;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.context-pill.has-context .memory-dot {
  background: #34a853;
  box-shadow: 0 0 8px rgba(52, 168, 83, 0.7);
  animation: pulse-dot 1.5s infinite;
}

.gemini-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--gemini-surface-container);
  border: 1px solid var(--gemini-border);
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.gemini-pill-btn.accent {
  background: linear-gradient(135deg, rgba(66, 133, 244, 0.16), rgba(155, 114, 207, 0.18));
  border-color: rgba(155, 114, 207, 0.4);
  color: #d0bcff;
}

.gemini-pill-btn.accent:hover {
  background: linear-gradient(135deg, rgba(66, 133, 244, 0.28), rgba(155, 114, 207, 0.3));
  color: #ffffff;
  border-color: rgba(138, 180, 248, 0.65);
  transform: translateY(-1px);
}

/* Notes Feed */
.notes-feed {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 4px;
}

.notes-empty {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-muted);
  font-style: italic;
  padding: 16px 4px;
}

.note-item {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--gemini-purple);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: noteAppear 0.35s var(--ease-standard);
}

@keyframes noteAppear {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.note-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.note-badge {
  color: #a8c7fa;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.note-body {
  font-size: 1rem;
  line-height: 1.55;
  color: #f1f3f4;
  font-weight: 400;
  white-space: pre-line;
}

/* Active thinking glow for Notes card */
.gemini-card.thinking .gemini-card-border-glow {
  background: linear-gradient(
    135deg,
    var(--gemini-blue) 0%,
    var(--gemini-purple) 50%,
    var(--gemini-coral) 100%
  );
  box-shadow: 0 0 30px rgba(155, 114, 207, 0.35);
}

/* =========================================================
   Bottom Help Button & Chrome AI Flags Modal
   ========================================================= */
.bottom-help-container {
  display: flex;
  justify-content: center;
  padding: 10px 0 20px;
}

.gemini-help-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--gemini-border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 8px 18px;
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.gemini-help-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border-color: rgba(138, 180, 248, 0.4);
  transform: translateY(-1px);
}

.help-icon {
  color: #8ab4f8;
}

/* Gemini Dialog Modal */
.gemini-dialog {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-card);
  background: #191c20;
  color: var(--text-primary);
  padding: 0;
  max-width: 620px;
  width: 92%;
  margin: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8), 0 0 32px rgba(66, 133, 244, 0.15);
  overflow: hidden;
}

.gemini-dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
}

.dialog-content {
  display: flex;
  flex-direction: column;
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: var(--gemini-surface);
  border-bottom: 1px solid var(--gemini-border);
}

.dialog-title-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dialog-title-wrapper h2 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.dialog-close-btn {
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 8px;
  transition: color var(--transition-smooth);
}

.dialog-close-btn:hover {
  color: var(--text-primary);
}

.dialog-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: 68vh;
  overflow-y: auto;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.dialog-intro {
  color: var(--text-primary);
  font-size: 0.92rem;
}

.setup-block {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gemini-blue), var(--gemini-purple));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.flag-item {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--gemini-border);
  border-radius: 12px;
  padding: 10px 14px;
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.flag-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 600;
}

.flag-name {
  color: #e3e3e3;
}

.flag-value {
  color: #81c995;
  background: rgba(52, 168, 83, 0.15);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
}

.flag-url {
  font-family: monospace;
  font-size: 0.78rem;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  word-break: break-all;
}

.flag-url:hover {
  background: rgba(56, 189, 248, 0.18);
  color: #ffffff;
  border-color: rgba(56, 189, 248, 0.5);
}

.flag-url.inline {
  display: inline-block;
  padding: 2px 6px;
}

.flag-url.copied {
  background: rgba(52, 168, 83, 0.2);
  color: #81c995;
  border-color: rgba(52, 168, 83, 0.5);
}

.dialog-note-box {
  background: rgba(66, 133, 244, 0.08);
  border: 1px solid rgba(66, 133, 244, 0.25);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  gap: 12px;
  font-size: 0.82rem;
  color: #a8c7fa;
  align-items: flex-start;
}

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  padding: 16px 24px;
  border-top: 1px solid var(--gemini-border);
  background: var(--gemini-surface);
}

.gemini-pill-btn.large {
  padding: 8px 22px;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 640px) {
  .card-inner {
    padding: 18px 20px;
    min-height: 160px;
  }
  .subtitle-body {
    font-size: 1.35rem;
  }
  .text-translated {
    font-size: 1.45rem;
  }
  .text-translated.placeholder {
    font-size: 1.1rem;
  }
}