/* ==========================================================================
   s7chat — Style Reference (Monopo Saigon Dark Violet Editorial System)
   Dreamy Interactive Living Fluid Gradient & Spacious Editorial Cards
   ========================================================================== */

:root {
  /* Colors — Dark Canvas with Vibrant Purple Accents */
  --color-obsidian: #000000;
  --color-canvas: #06050a;
  --color-card-bg: #0d0c15;
  --color-card-hover: #141320;
  --color-paper: #ffffff;
  --color-inkstone: #ededf2;
  --color-felt-gray: #8d8a9e;
  --color-slate-pill: #1f1d2b;
  --color-ash-mist: #b5b3c4;
  --color-pewter: #5e5b6e;

  /* Purple / Violet Palette */
  --color-purple-primary: #a855f7;
  --color-purple-hover: #c084fc;
  --color-purple-dim: #7c3aed;
  --color-purple-glow: rgba(168, 85, 247, 0.35);
  --color-purple-border: rgba(168, 85, 247, 0.5);
  --color-purple-subtle: rgba(168, 85, 247, 0.1);

  /* Hairlines */
  --color-hairline: rgba(255, 255, 255, 0.12);
  --color-hairline-bright: rgba(255, 255, 255, 0.24);

  /* Typography */
  --font-roobert: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Typography Scale */
  --text-caption: 12px;
  --leading-caption: 1.19;
  --text-body-sm: 15px;
  --leading-body-sm: 1.35;
  --text-body: 17px;
  --leading-body: 1.45;
  --text-subheading: 32px;
  --leading-subheading: 1.15;
  --text-heading: clamp(46px, 7.5vw, 80px);
  --leading-heading: 1.05;

  /* Spacing */
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-28: 28px;
  --spacing-34: 34px;
  --spacing-40: 40px;
  --spacing-46: 46px;
  --spacing-64: 64px;

  /* Layout */
  --page-max-width: 1078px;

  /* Border Radius (Strict: 0px or 75px only) */
  --radius-cards: 0px;
  --radius-images: 0px;
  --radius-inputs: 0px;
  --radius-buttons: 75px;
  --radius-tags: 75px;

  /* Motion */
  --ease-editorial: cubic-bezier(0.19, 1, 0.22, 1);
  --transition-slow: 0.8s var(--ease-editorial);
  --transition-mid: 0.4s var(--ease-editorial);
  --transition-fast: 0.2s var(--ease-editorial);
}

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

html, body {
  background-color: var(--color-canvas);
  color: var(--color-paper);
  font-family: var(--font-roobert);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

::selection {
  background-color: var(--color-purple-primary);
  color: #ffffff;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 66px;
  background-color: rgba(6, 5, 10, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
}

.nav-container {
  width: 100%;
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-28);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.nav-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  text-decoration: none;
  color: var(--color-paper);
}

.brand-title {
  font-family: var(--font-roobert);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.5px;
  color: var(--color-paper);
}

.brand-separator {
  color: var(--color-purple-primary);
  font-weight: 400;
}

.brand-sub {
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-felt-gray);
}

.nav-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  white-space: nowrap;
}

.nav-icon-btn {
  background: transparent;
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-tags);
  color: var(--color-paper);
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  text-decoration: none;
}

.nav-icon-btn svg {
  display: block;
  width: 15px;
  height: 15px;
}

.nav-icon-btn:hover {
  border-color: var(--color-purple-primary);
  background-color: rgba(168, 85, 247, 0.15);
  color: #ffffff;
}

.nav-icon-btn.muted {
  color: var(--color-felt-gray);
  border-color: var(--color-hairline);
  opacity: 0.6;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-tags);
  padding: 0 14px;
  height: 32px;
  min-height: 32px;
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background-color: rgba(168, 85, 247, 0.1);
  box-sizing: border-box;
  margin: 0;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #2ea043;
  box-shadow: 0 0 8px rgba(46, 160, 67, 0.7);
  display: block;
}

.status-label {
  display: inline-block;
  line-height: 1;
}

.hidden {
  display: none !important;
}

@media (max-width: 600px) {
  .nav-container {
    padding: 0 16px;
    gap: 8px;
  }
  .brand-sub,
  .brand-separator {
    display: none;
  }
  .nav-meta {
    gap: 8px;
  }
  .status-indicator {
    padding: 0 10px;
    font-size: 10px;
    gap: 6px;
  }
}

/* ==========================================================================
   Main Canvas & Views
   ========================================================================== */
.main-canvas {
  width: 100%;
  min-height: calc(100vh - 66px - 70px);
}

.view-section {
  display: none;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.view-section.active {
  display: block;
  opacity: 1;
}

.editorial-container {
  width: 100%;
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-28);
}

.editorial-container.lobby-container {
  padding-top: 56px;
  padding-bottom: 72px;
}

/* ==========================================================================
   Hero Section with Dreamy Interactive Living Fluid Gradient
   ========================================================================== */
.hero-iridescent {
  position: relative;
  background: radial-gradient(circle at 50% 30%, #15092a 0%, #0a0614 60%, #050409 100%);
  background-size: 150% 150%;
  animation: heroSubtleShift 24s ease-in-out infinite alternate;
  color: var(--color-paper);
  padding: calc(var(--spacing-64) * 1.3) var(--spacing-28);
  overflow: hidden;
  border-bottom: 1px solid rgba(168, 85, 247, 0.3);
  cursor: default;
}

@keyframes heroSubtleShift {
  0% { background-position: 45% 30%; }
  100% { background-position: 55% 40%; }
}

/* Luminous Floating Orbs with Softened Blur and Dreamy Pace */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform, opacity;
  --mouse-shift-x: 0px;
  --mouse-shift-y: 0px;
}

.orb-1 {
  width: 650px;
  height: 650px;
  top: -150px;
  left: -80px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.38) 0%, rgba(124, 58, 237, 0.2) 48%, transparent 75%);
  filter: blur(120px);
  animation: moveOrb1 24s ease-in-out infinite alternate;
}

.orb-2 {
  width: 580px;
  height: 580px;
  bottom: -160px;
  right: -60px;
  background: radial-gradient(circle, rgba(192, 132, 252, 0.32) 0%, rgba(147, 51, 234, 0.18) 48%, transparent 75%);
  filter: blur(130px);
  animation: moveOrb2 28s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
}

.orb-3 {
  width: 700px;
  height: 520px;
  top: 10%;
  left: 22%;
  background: radial-gradient(ellipse, rgba(129, 140, 248, 0.28) 0%, rgba(168, 85, 247, 0.15) 50%, transparent 75%);
  filter: blur(140px);
  animation: moveOrb3 22s ease-in-out infinite alternate;
}

/* Interactive Cursor Follow Spotlight */
.hero-cursor-glow {
  position: absolute;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  top: 0;
  left: 0;
  background: radial-gradient(circle, rgba(192, 132, 252, 0.35) 0%, rgba(168, 85, 247, 0.16) 42%, transparent 70%);
  filter: blur(75px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: 1;
  will-change: transform;
}

.hero-plasma-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: radial-gradient(circle at 50% 40%, rgba(168, 85, 247, 0.12) 0%, transparent 65%);
  animation: plasmaSubtleBreath 14s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes plasmaSubtleBreath {
  0% { opacity: 0.3; transform: scale(0.98); }
  100% { opacity: 0.6; transform: scale(1.04); }
}

@keyframes moveOrb1 {
  0% { transform: translate(calc(0px + var(--mouse-shift-x)), calc(0px + var(--mouse-shift-y))) scale(1) rotate(0deg); opacity: 0.6; }
  50% { transform: translate(calc(70px + var(--mouse-shift-x)), calc(40px + var(--mouse-shift-y))) scale(1.08) rotate(25deg); opacity: 0.85; }
  100% { transform: translate(calc(30px + var(--mouse-shift-x)), calc(80px + var(--mouse-shift-y))) scale(0.96) rotate(50deg); opacity: 0.65; }
}

@keyframes moveOrb2 {
  0% { transform: translate(calc(0px + var(--mouse-shift-x)), calc(0px + var(--mouse-shift-y))) scale(1) rotate(0deg); opacity: 0.6; }
  50% { transform: translate(calc(-60px + var(--mouse-shift-x)), calc(-35px + var(--mouse-shift-y))) scale(1.1) rotate(-20deg); opacity: 0.85; }
  100% { transform: translate(calc(-90px + var(--mouse-shift-x)), calc(20px + var(--mouse-shift-y))) scale(1.02) rotate(-40deg); opacity: 0.65; }
}

@keyframes moveOrb3 {
  0% { transform: translate(calc(0px + var(--mouse-shift-x)), calc(0px + var(--mouse-shift-y))) scale(1); opacity: 0.5; }
  50% { transform: translate(calc(-40px + var(--mouse-shift-x)), calc(30px + var(--mouse-shift-y))) scale(1.12); opacity: 0.8; }
  100% { transform: translate(calc(40px + var(--mouse-shift-x)), calc(-25px + var(--mouse-shift-y))) scale(0.97); opacity: 0.55; }
}

.hero-inner {
  position: relative;
  max-width: var(--page-max-width);
  margin: 0 auto;
  z-index: 2;
  animation: heroFadeIn 1s var(--ease-editorial);
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-pretitle {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--color-purple-hover);
  margin-bottom: var(--spacing-16);
  text-transform: uppercase;
  text-shadow: 0 0 16px rgba(168, 85, 247, 0.7);
}

.hero-headline {
  font-family: var(--font-roobert);
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
  font-weight: 300;
  letter-spacing: -1.5px;
  color: var(--color-paper);
  margin-bottom: var(--spacing-28);
  max-width: 820px;
}

.hero-glow-text {
  font-weight: 600;
  background: linear-gradient(90deg, #d8b4fe, #f472b6, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 25px rgba(168, 85, 247, 0.5));
}

.hero-description {
  font-size: var(--text-body);
  line-height: 1.6;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  max-width: 580px;
}

/* ==========================================================================
   Action Cards Grid (Spacious, Airy & Generous Margins)
   ========================================================================== */
.actions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 36px;
  margin-bottom: 60px;
}

@media (max-width: 820px) {
  .actions-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.action-card {
  background-color: var(--color-card-bg);
  border: 1px solid rgba(168, 85, 247, 0.32);
  border-radius: var(--radius-cards); /* 0px */
  padding: 46px 40px;
  min-height: 430px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  transition: all var(--transition-mid);
  box-shadow: 0 6px 35px rgba(0, 0, 0, 0.6);
}

.action-card:hover {
  border-color: rgba(168, 85, 247, 0.7);
  background-color: var(--color-card-hover);
  box-shadow: 0 0 40px rgba(168, 85, 247, 0.16);
  transform: translateY(-3px);
}

.card-top-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.card-step {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-purple-primary);
  border: 1px solid rgba(168, 85, 247, 0.45);
  padding: 3px 10px;
  border-radius: var(--radius-tags);
  background-color: rgba(168, 85, 247, 0.12);
}

.card-title {
  font-family: var(--font-roobert);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--color-paper);
}

.card-body-text {
  font-size: 15px;
  color: var(--color-felt-gray);
  line-height: 1.6;
  margin: 0;
}

.card-middle-block {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: auto;
  margin-bottom: auto;
  padding: 8px 0;
}

.card-footer {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

/* ==========================================================================
   Inputs (Generous Height & 0px radius)
   ========================================================================== */
.form-group {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row {
  display: flex;
  gap: 18px;
}

.flex-code { flex: 2; }
.flex-alias { flex: 3; }

@media (max-width: 640px) {
  .form-row {
    flex-direction: column;
    gap: 16px;
  }
}

.input-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: var(--color-purple-hover);
  font-weight: 600;
}

.mono-input {
  width: 100%;
  height: 52px;
  background-color: #06050b;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-inputs); /* 0px */
  padding: 0 20px;
  font-family: var(--font-roobert);
  font-size: 15px;
  color: var(--color-paper);
  outline: none;
  transition: all var(--transition-fast);
}

.mono-input:focus {
  background-color: #0c0a15;
  border-color: var(--color-purple-primary);
  box-shadow: 0 0 18px rgba(168, 85, 247, 0.35);
}

.code-input {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-purple-primary);
}

/* ==========================================================================
   Buttons (75px full pill strict)
   ========================================================================== */
.ghost-pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  background-color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-buttons); /* 75px */
  padding: 13px 34px;
  font-family: var(--font-roobert);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-paper);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-mid);
  white-space: nowrap;
}

.ghost-pill-btn:hover {
  background-color: var(--color-paper);
  color: var(--color-obsidian);
  letter-spacing: 0.3px;
}

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

.ghost-pill-btn.purple-accent {
  border-color: var(--color-purple-border);
  background-color: var(--color-purple-subtle);
  color: #ffffff;
}

.ghost-pill-btn.purple-accent:hover {
  background: linear-gradient(135deg, #a855f7, #7c3aed);
  border-color: var(--color-purple-primary);
  color: #ffffff;
  box-shadow: 0 0 28px rgba(168, 85, 247, 0.5);
}

.ghost-pill-btn.compact {
  padding: 7px 18px;
  font-size: 13px;
  border-color: rgba(255, 255, 255, 0.3);
}

.action-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background-color: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.45);
  border-radius: var(--radius-buttons); /* 75px */
  padding: 5px 12px;
  font-size: 12px;
  color: var(--color-paper);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.action-pill-btn:hover {
  background-color: var(--color-purple-primary);
  border-color: var(--color-purple-primary);
  color: #ffffff;
  box-shadow: 0 0 14px rgba(168, 85, 247, 0.5);
}

.action-pill-btn.purple-highlight {
  border-color: var(--color-purple-primary);
  background: rgba(168, 85, 247, 0.2);
  font-weight: 500;
}

.action-pill-btn.copied {
  background-color: #2ea043;
  border-color: #2ea043;
  color: #ffffff;
}

/* Protocol specs banner */
.protocol-specs {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--spacing-28);
  gap: var(--spacing-16);
  flex-wrap: wrap;
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.spec-label {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--color-felt-gray);
  font-weight: 600;
}

.spec-value {
  font-size: 13px;
  color: var(--color-inkstone);
}

/* ==========================================================================
   Room & Chat Screen
   ========================================================================== */
.room-container {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 66px);
  padding-top: var(--spacing-28);
}

.room-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-cards); /* 0px */
  padding: var(--spacing-16) var(--spacing-28);
  margin-bottom: var(--spacing-28);
  background-color: var(--color-card-bg);
  flex-wrap: wrap;
  gap: var(--spacing-16);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.08);
}

.room-info-cluster {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  flex-wrap: wrap;
}

.room-code-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.badge-label {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--color-purple-primary);
  font-weight: 700;
}

.badge-code {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--color-paper);
  border-bottom: 2px solid var(--color-purple-primary);
  padding: 0 4px;
}

.e2ee-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(52, 211, 153, 0.4);
  border-radius: var(--radius-tags);
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background-color: rgba(16, 185, 129, 0.08);
  color: #34d399;
}

.e2ee-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.8);
}

.action-pill-btn.burn-accent {
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
  background-color: rgba(239, 68, 68, 0.06);
}

.action-pill-btn.burn-accent:hover {
  border-color: #ef4444;
  color: #ffffff;
  background-color: #ef4444;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.5);
}

.room-code-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
}

.room-telemetry-cluster {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  flex-wrap: wrap;
}

.countdown-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-tags); /* 75px */
  padding: 6px 14px;
  font-size: 12px;
  background-color: rgba(255, 255, 255, 0.04);
}

.countdown-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-purple-primary);
  box-shadow: 0 0 8px rgba(168, 85, 247, 0.8);
  animation: blinkTtl 2s infinite;
}

@keyframes blinkTtl {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.countdown-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--color-felt-gray);
}

.countdown-timer {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  color: var(--color-paper);
}

.peers-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-tags);
  padding: 6px 12px;
  font-size: 12px;
  color: var(--color-felt-gray);
  background-color: rgba(255, 255, 255, 0.02);
}

.peers-icon {
  color: #2ea043;
  font-size: 10px;
}

@media (max-width: 640px) {
  .room-header-bar {
    padding: 12px 14px;
    gap: 12px;
  }
  .room-info-cluster {
    width: 100%;
    justify-content: space-between;
  }
  .room-code-actions {
    gap: 4px;
  }
  .action-pill-btn {
    padding: 4px 8px;
    font-size: 11px;
  }
  .room-telemetry-cluster {
    width: 100%;
    justify-content: space-between;
    gap: 6px;
  }
  .countdown-pill, .peers-pill {
    padding: 4px 10px;
    font-size: 11px;
  }
  .ghost-pill-btn.compact {
    padding: 5px 14px;
    font-size: 12px;
  }
}

/* ==========================================================================
   Messages Board & Cards
   ========================================================================== */
.messages-board {
  flex: 1;
  min-height: 380px;
  max-height: 520px;
  overflow-y: auto;
  border: 1px solid rgba(168, 85, 247, 0.25);
  border-radius: var(--radius-cards); /* 0px */
  padding: var(--spacing-28);
  margin-bottom: var(--spacing-28);
  background-color: #040307;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 260px;
  text-align: center;
  color: var(--color-felt-gray);
}

.empty-title {
  font-size: 20px;
  font-weight: 500;
  color: var(--color-paper);
  margin-bottom: var(--spacing-8);
}

.empty-subtitle {
  font-size: 14px;
  max-width: 440px;
  line-height: 1.5;
}

.messages-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

.message-card {
  background-color: var(--color-card-bg);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-cards); /* 0px */
  padding: var(--spacing-16) var(--spacing-28);
  transition: border-color var(--transition-fast);
}

.message-card.is-self {
  border-left: 3px solid var(--color-purple-primary);
  background-color: rgba(168, 85, 247, 0.05);
}

.message-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-12);
  border-bottom: 1px solid var(--color-hairline);
  padding-bottom: 8px;
}

.message-sender-group {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
}

.message-sender {
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.3px;
  color: var(--color-paper);
}

.message-tag-self {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 1px solid var(--color-purple-primary);
  color: var(--color-purple-primary);
  border-radius: var(--radius-tags);
  padding: 1px 7px;
  background-color: rgba(168, 85, 247, 0.12);
}

.message-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-felt-gray);
}

.copy-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background-color: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: var(--radius-buttons); /* 75px */
  padding: 4px 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-paper);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-pill-btn:hover {
  background-color: var(--color-purple-primary);
  border-color: var(--color-purple-primary);
  color: #ffffff;
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.4);
}

.copy-pill-btn.copied {
  background-color: #2ea043;
  color: #ffffff;
  border-color: #2ea043;
}

.message-content {
  font-family: var(--font-roobert);
  font-size: 15px;
  line-height: 1.55;
  color: var(--color-inkstone);
  white-space: pre-wrap;
  word-break: break-word;
}

.message-content.is-code {
  font-family: var(--font-mono);
  font-size: 13px;
  background-color: #030205;
  padding: 14px;
  border: 1px solid rgba(168, 85, 247, 0.2);
  color: #f0edf8;
}

.message-content a {
  color: var(--color-purple-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Code Block Snippet in Notes */
.code-block-card {
  background-color: #06050b;
  border: 1px solid rgba(168, 85, 247, 0.28);
  border-radius: 0px;
  margin-top: 10px;
  overflow: hidden;
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(168, 85, 247, 0.1);
  border-bottom: 1px solid rgba(168, 85, 247, 0.2);
  padding: 6px 14px;
}

.code-lang-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--color-purple-primary);
  text-transform: uppercase;
}

.code-copy-btn {
  background: transparent;
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: var(--radius-buttons);
  color: var(--color-paper);
  font-size: 11px;
  padding: 2px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}

.code-copy-btn:hover {
  background-color: var(--color-purple-primary);
  color: #ffffff;
}

.code-block-pre {
  margin: 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: #f1f5f9;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
}

/* Self-Destruct Note Styling */
.message-card.burn-note {
  border-color: rgba(239, 68, 68, 0.45);
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.06) 0%, rgba(12, 11, 20, 0.95) 100%);
  position: relative;
  overflow: hidden;
}

.burn-timer-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.5);
  background-color: rgba(239, 68, 68, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-tags);
  animation: pulseBurn 1.5s infinite;
}

@keyframes pulseBurn {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.burn-progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, #ef4444, #f59e0b);
  width: 100%;
  transition: width 1s linear;
}

.dissolve-out {
  animation: dissolveAnim 0.6s ease-out forwards;
}

@keyframes dissolveAnim {
  0% { opacity: 1; transform: scale(1); filter: blur(0px); }
  50% { opacity: 0.5; filter: blur(4px); }
  100% { opacity: 0; transform: scale(0.94); filter: blur(10px); max-height: 0; padding: 0; margin: 0; border: none; }
}

.system-notice {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--color-felt-gray);
  padding: 6px 0;
}

/* ==========================================================================
   Composer & Options
   ========================================================================== */
.composer-container {
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-cards); /* 0px */
  background-color: var(--color-card-bg);
  padding: var(--spacing-16);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.08);
}

.typing-indicator-bar {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 0 4px 10px 4px;
  font-size: 12px;
  color: var(--color-purple-hover);
  animation: fadeInFast 0.2s ease;
}

.typing-indicator-bar.active {
  display: flex;
}

.typing-dots {
  display: inline-flex;
  gap: 4px;
}

.typing-dots span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-purple-primary);
  animation: typingBounce 1.2s infinite ease-in-out;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.35; }
  40% { transform: translateY(-4px); opacity: 1; }
}

@keyframes fadeInFast {
  from { opacity: 0; }
  to { opacity: 1; }
}

.composer-options {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.option-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background-color: transparent;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-tags);
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-felt-gray);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.option-pill-btn:hover {
  border-color: var(--color-purple-primary);
  color: var(--color-paper);
}

.option-pill-btn.active {
  border-color: var(--color-purple-primary);
  background-color: rgba(168, 85, 247, 0.2);
  color: var(--color-purple-hover);
  font-weight: 600;
}

.option-pill-btn.active.burn-active {
  border-color: #ef4444;
  background-color: rgba(239, 68, 68, 0.16);
  color: #f87171;
}

.composer-textarea {
  width: 100%;
  min-height: 85px;
  background-color: transparent;
  border: none;
  outline: none;
  resize: vertical;
  font-family: var(--font-roobert);
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-paper);
}

.composer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--spacing-12);
  margin-top: var(--spacing-8);
  flex-wrap: wrap;
  gap: var(--spacing-12);
}

.composer-hints {
  display: flex;
  align-items: center;
  gap: var(--spacing-16);
  font-size: 11px;
  color: var(--color-felt-gray);
}

.char-counter {
  font-family: var(--font-mono);
  color: var(--color-purple-primary);
}

/* ==========================================================================
   Modals (Expired & QR Code with High Z-Index)
   ========================================================================== */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(4, 3, 7, 0.92);
  backdrop-filter: blur(14px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-28);
}

.modal-backdrop.active {
  display: flex !important;
}

.modal-editorial-card {
  background-color: #0c0b14;
  border: 1px solid var(--color-purple-border);
  border-radius: var(--radius-cards); /* 0px */
  padding: 36px 32px;
  max-width: 520px;
  width: 100%;
  box-shadow: 0 0 60px rgba(168, 85, 247, 0.28);
  animation: modalEnter 0.35s var(--ease-editorial);
}

@keyframes modalEnter {
  from { transform: translateY(20px) scale(0.97); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-status-tag {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 1.5px;
  font-weight: 700;
  color: var(--color-purple-primary);
  border: 1px solid var(--color-purple-primary);
  border-radius: var(--radius-tags);
  padding: 3px 10px;
  margin-bottom: var(--spacing-16);
}

.modal-status-tag.burn-tag {
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.6);
  background-color: rgba(239, 68, 68, 0.12);
}

.modal-card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: var(--spacing-24);
  flex-wrap: wrap;
}

.ghost-pill-btn.burn-fill {
  background-color: #ef4444;
  border-color: #ef4444;
  color: #ffffff;
}

.ghost-pill-btn.burn-fill:hover {
  background-color: #dc2626;
  border-color: #dc2626;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

.burn-dialog {
  border-color: rgba(239, 68, 68, 0.5);
  box-shadow: 0 0 60px rgba(239, 68, 68, 0.2);
}

.modal-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-12);
}

.modal-description {
  font-size: 15px;
  color: var(--color-felt-gray);
  line-height: 1.5;
  margin-bottom: var(--spacing-24);
}

/* QR Code Modal — High Contrast Black on White Inside Glowing Purple Border */
.qr-card {
  text-align: center;
  max-width: 430px;
}

.qr-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.modal-close-icon {
  background: transparent;
  border: none;
  color: var(--color-felt-gray);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  padding: 0 6px;
  transition: color var(--transition-fast);
}

.modal-close-icon:hover {
  color: var(--color-paper);
}

.qr-display-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin: 18px 0 24px 0;
}

.qr-code-wrapper {
  background-color: #ffffff !important;
  color: #000000 !important;
  padding: 14px;
  border-radius: 0px;
  border: 2px solid var(--color-purple-primary);
  box-shadow: 0 0 35px rgba(168, 85, 247, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 248px;
  height: 248px;
  box-sizing: border-box;
}

.qr-code-wrapper svg,
.qr-code-wrapper img,
.qr-image {
  width: 218px !important;
  height: 218px !important;
  display: block !important;
  object-fit: contain;
  background-color: #ffffff !important;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: pixelated;
}

.qr-loading {
  font-size: 13px;
  color: #333333;
  font-family: var(--font-mono);
}

.qr-room-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  border: 1px solid rgba(168, 85, 247, 0.4);
  padding: 4px 14px;
  border-radius: var(--radius-tags);
  background-color: rgba(168, 85, 247, 0.1);
}

.qr-modal-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: var(--spacing-28);
  right: var(--spacing-28);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
  pointer-events: none;
}

.toast {
  background-color: #ffffff;
  color: #000000;
  font-weight: 600;
  border-radius: var(--radius-tags); /* 75px */
  padding: 10px 22px;
  font-size: 13px;
  letter-spacing: 0.3px;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.5);
  animation: toastIn 0.3s var(--ease-editorial);
}

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

/* ==========================================================================
   Minimal Clean Footer
   ========================================================================== */
.minimal-footer {
  text-align: center;
  padding: 24px 0 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-credit {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: lowercase;
  color: var(--color-felt-gray);
  transition: color var(--transition-fast);
}

.footer-credit a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-credit a:hover {
  color: var(--color-purple-primary);
}