/* CYPHR THEME: PURE BLACK & NEON GREEN CYBERPUNK (HIGH CONTRAST, RESOURCE-EFFICIENT) */
:root {
  --bg-primary: #050807;
  --bg-surface: #0c120f;
  --bg-card: #111a15;
  --bg-input: #080d0a;
  --border-neon: #00ff66;
  --border-muted: #1a3324;
  --border-subtle: #12241a;

  --neon-green: #00ff66;
  --neon-glow: rgba(0, 255, 102, 0.35);
  --neon-dim: #00cc52;
  --neon-bright: #39ff7f;

  --text-main: #e2f5ea;
  --text-muted: #7fa890;
  --text-dim: #436350;
  --text-dark: #050807;

  --accent-red: #ff3366;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.4;
  overflow: hidden;
  position: fixed;
}

/* Background Cyberpunk Grid subtle lines */
body::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(0, 255, 102, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 102, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

.app-container {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 600px; /* Constrain to mobile app width on desktop, full width on phones */
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  border-left: 1px solid var(--border-muted);
  border-right: 1px solid var(--border-muted);
  z-index: 1;
}

/* SCREEN SYSTEM */
.screen {
  display: none;
  width: 100%;
  height: 100%;
  flex-direction: column;
}
.screen.active {
  display: flex;
}

/* LOBBY / LOGIN CARD */
#lobbyScreen {
  overflow-y: auto;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.lobby-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-surface);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 255, 102, 0.05);
}

.brand {
  text-align: center;
  margin-bottom: 24px;
}

.brand-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--neon-green);
  border: 1px solid var(--neon-green);
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
  background: rgba(0, 255, 102, 0.08);
}

.brand-title {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 3px;
  color: #fff;
  text-shadow: 0 0 10px var(--neon-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-green);
  animation: pulse 1.6s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.8); }
}

.brand-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 6px;
}

/* FORMS */
.join-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--neon-green);
}

.input-with-action {
  display: flex;
  gap: 6px;
}

input[type="text"],
input[type="password"],
input[type="url"],
textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 12px 14px;
  font-size: 14px;
  font-family: var(--font-mono);
  outline: none;
  transition: var(--transition);
}

input:focus, textarea:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.2);
}

.crypto-note {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.3;
}

/* BUTTONS */
button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: inherit;
  transition: var(--transition);
}

.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: var(--neon-green);
  color: var(--text-dark);
  font-weight: 800;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 1px;
  padding: 14px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
  box-shadow: 0 0 15px var(--neon-glow);
}

.btn-primary:hover, .btn-primary:active {
  background: var(--neon-bright);
  box-shadow: 0 0 25px rgba(0, 255, 102, 0.6);
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(0, 255, 102, 0.08);
  border: 1px solid var(--border-muted);
  color: var(--neon-green);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.btn-ghost:hover {
  background: rgba(0, 255, 102, 0.18);
  border-color: var(--neon-green);
}

.btn-icon {
  background: transparent;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border-radius: 50%;
  width: 36px;
  height: 36px;
}

.btn-icon:hover {
  color: var(--neon-green);
  background: rgba(0, 255, 102, 0.1);
}

.security-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--border-muted);
}

.pill {
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg-card);
  padding: 4px 8px;
  border-radius: 12px;
  border: 1px solid var(--border-muted);
}

/* CHAT SCREEN */
#chatScreen {
  position: relative;
  height: 100%;
}

.chat-header {
  height: 58px;
  min-height: 58px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  z-index: 10;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.room-meta {
  display: flex;
  flex-direction: column;
}

.room-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 15px;
  color: #fff;
  font-family: var(--font-mono);
}

.neon-hash {
  color: var(--neon-green);
  text-shadow: 0 0 6px var(--neon-glow);
}

.e2ee-tag {
  font-size: 10px;
  color: var(--neon-green);
  background: rgba(0, 255, 102, 0.12);
  border: 1px solid var(--border-muted);
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 600;
}

.room-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-muted);
}

.live-dot {
  width: 6px;
  height: 6px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 5px var(--neon-green);
}

/* DRAWER PEERS */
.peers-drawer {
  position: absolute;
  top: 58px;
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-neon);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.7);
  padding: 16px;
  z-index: 20;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-green);
  margin-bottom: 12px;
}

.peer-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.peer-item {
  background: var(--bg-card);
  border: 1px solid var(--border-muted);
  padding: 6px 12px;
  border-radius: 14px;
  font-size: 13px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.peer-item.self {
  border-color: var(--neon-green);
  color: var(--neon-bright);
}

/* MESSAGES CONTAINER */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-overflow-scrolling: touch;
}

.system-banner {
  display: flex;
  gap: 12px;
  background: rgba(0, 255, 102, 0.05);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-md);
  padding: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.shield-icon {
  font-size: 20px;
}

.system-message {
  align-self: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 4px 10px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* MESSAGE BUBBLES */
.message-bubble {
  max-width: 82%;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.message-bubble.incoming {
  align-self: flex-start;
}

.message-bubble.outgoing {
  align-self: flex-end;
}

.message-meta {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 11px;
}

.message-sender {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--neon-green);
}

.message-bubble.outgoing .message-sender {
  display: none; /* User knows they sent it */
}

.message-time {
  color: var(--text-dim);
  font-size: 10px;
  font-family: var(--font-mono);
}

.message-body {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  word-break: break-word;
  line-height: 1.45;
}

.message-bubble.incoming .message-body {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-muted);
  border-bottom-left-radius: 2px;
}

.message-bubble.outgoing .message-body {
  background: #0f2e1b;
  color: #f0fff4;
  border: 1px solid var(--border-neon);
  box-shadow: 0 0 10px rgba(0, 255, 102, 0.15);
  border-bottom-right-radius: 2px;
}

/* GIF / IMAGE IN CHAT */
.chat-gif-img {
  max-width: 260px;
  max-height: 220px;
  border-radius: 10px;
  display: block;
  object-fit: cover;
  border: 1px solid var(--border-neon);
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.2);
}

/* TYPING INDICATOR */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--neon-green);
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
}

.typing-dots {
  display: inline-flex;
  gap: 3px;
}

.typing-dots span {
  width: 4px;
  height: 4px;
  background: var(--neon-green);
  border-radius: 50%;
  animation: typing 1.4s 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 typing {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1.2); opacity: 1; }
}

/* GIF MODAL */
.gif-modal {
  position: absolute;
  bottom: 60px;
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-neon);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.8);
  padding: 14px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 50vh;
}

.gif-modal-header {
  display: flex;
  gap: 8px;
}

.gif-custom-input {
  display: flex;
  gap: 6px;
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  color: var(--neon-green);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.btn-secondary:hover {
  background: var(--neon-green);
  color: var(--text-dark);
}

.gif-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  overflow-y: auto;
  max-height: 220px;
  padding-right: 4px;
}

.gif-thumb {
  width: 100%;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid var(--border-muted);
  transition: var(--transition);
}

.gif-thumb:hover {
  border-color: var(--neon-green);
  transform: scale(1.03);
}

/* FOOTER CHAT INPUT */
.chat-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-muted);
  padding: 8px 12px 14px;
  z-index: 10;
}

.chat-form {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.btn-action {
  background: var(--bg-card);
  border: 1px solid var(--border-muted);
  color: var(--neon-green);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  height: 40px;
}

.btn-action:hover {
  border-color: var(--neon-green);
  box-shadow: 0 0 8px rgba(0, 255, 102, 0.2);
}

#messageInput {
  flex: 1;
  min-height: 40px;
  max-height: 120px;
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  resize: none;
  border-radius: 20px;
}

.btn-send {
  background: var(--neon-green);
  color: var(--text-dark);
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px var(--neon-glow);
}

.btn-send:hover, .btn-send:active {
  background: var(--neon-bright);
  transform: scale(1.05);
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface);
  border: 1px solid var(--border-neon);
  box-shadow: 0 0 20px rgba(0, 255, 102, 0.25);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 16px;
  border-radius: 20px;
  z-index: 100;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translate(-50%, 10px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

.hidden {
  display: none !important;
}

/* NATIVE MOBILE OVERRIDES & SAFE AREAS */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .chat-footer {
    padding-bottom: calc(10px + env(safe-area-inset-bottom));
  }
}