/* ============================================================
   Pulse Messenger — стили
   ============================================================ */

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

:root {
  --bg-deep: #05060a;
  --bg-panel: #0a0e1a;
  --bg-card: #0d1224;
  --bg-input: #080b14;
  --border: #1a2040;
  --border-hi: #ff2d6f;
  --accent: #ff2d6f;
  --accent-2: #ff5c8f;
  --accent-glow: rgba(255, 45, 111, 0.45);
  --cyan: #4dd0ff;
  --text: #e6e9ff;
  --text-dim: #6b7599;
  --green: #4dff88;
  --red: #ff3355;
}

html, body {
  height: 100%;
  font-family: 'Consolas', 'Monaco', monospace;
  background: var(--bg-deep);
  color: var(--text);
  overflow: hidden;
}

#pulseBg {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.6;
  pointer-events: none;
}

.hidden { display: none !important; }

/* ============================================================
   AUTH SCREEN
   ============================================================ */

.auth-screen {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  max-width: 420px;
  width: 100%;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 44px 36px;
  text-align: center;
  box-shadow: 0 0 80px rgba(255, 45, 111, 0.15),
              inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: fadeUp 0.7s ease-out;
}

.logo {
  font-size: 56px;
  margin-bottom: 10px;
  filter: drop-shadow(0 0 24px var(--accent-glow));
  animation: heartbeat 1.4s ease-in-out infinite;
}

.auth-card h1 {
  color: var(--accent);
  font-size: 32px;
  letter-spacing: 10px;
  margin-bottom: 4px;
  text-shadow: 0 0 30px var(--accent-glow);
}

.tagline {
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 3px;
  margin-bottom: 28px;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border-radius: 10px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.25s ease;
}

.auth-tab:hover { color: var(--text); }

.auth-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.auth-card input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  margin-bottom: 10px;
  transition: all 0.25s ease;
}

.auth-card input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 22px var(--accent-glow);
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 10px;
  color: #fff;
  font-family: inherit;
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 3px;
  cursor: pointer;
  margin-top: 8px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover::before { left: 100%; }
.btn-primary:hover {
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.auth-error {
  color: var(--red);
  font-size: 12px;
  margin-top: 14px;
  min-height: 18px;
}

/* ============================================================
   APP
   ============================================================ */

.app-screen {
  position: relative;
  z-index: 1;
  display: flex;
  height: 100vh;
  padding: 14px;
  gap: 14px;
}

/* ----- SIDEBAR ----- */

.sidebar {
  width: 320px;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideIn 0.5s ease-out;
}

.sidebar-header {
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.pulse-logo {
  font-size: 28px;
  filter: drop-shadow(0 0 12px var(--accent-glow));
  animation: heartbeat 1.4s ease-in-out infinite;
}

.me {
  flex: 1;
  min-width: 0;
}

.me-name {
  color: var(--accent);
  font-size: 14px;
  font-weight: bold;
  letter-spacing: 1px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.me-status {
  color: var(--green);
  font-size: 10px;
  letter-spacing: 1px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.icon-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.search-wrap {
  padding: 12px 16px 0;
  position: relative;
}

.search-wrap input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  transition: all 0.25s ease;
}

.search-wrap input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

.search-results {
  position: absolute;
  top: 100%;
  left: 16px;
  right: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-hi);
  border-radius: 10px;
  margin-top: 4px;
  max-height: 240px;
  overflow-y: auto;
  z-index: 10;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.search-result {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text);
  transition: background 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-result:hover {
  background: rgba(255, 45, 111, 0.15);
}

.search-result .avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: bold;
}

.new-chat-btn {
  margin: 12px 16px;
  padding: 11px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 10px;
  color: #fff;
  font-family: inherit;
  font-size: 11px;
  font-weight: bold;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.new-chat-btn:hover {
  box-shadow: 0 0 22px var(--accent-glow);
  transform: translateY(-1px);
}

.chat-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px 12px;
}

.chat-list::-webkit-scrollbar { width: 6px; }
.chat-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.chat-item {
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 4px;
  cursor: pointer;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.chat-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.chat-item:hover {
  background: rgba(255, 45, 111, 0.08);
  border-color: var(--border);
}

.chat-item.active {
  background: rgba(255, 45, 111, 0.12);
  border-color: var(--accent);
}

.chat-item.active::before {
  transform: scaleY(1);
}

.chat-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a2040, #2a3060);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-weight: bold;
  font-size: 14px;
  flex-shrink: 0;
}

.chat-item.active .chat-avatar {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}

.chat-meta { flex: 1; min-width: 0; }

.chat-name {
  color: var(--text);
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 0.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-preview {
  color: var(--text-dim);
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 2px;
}

/* ----- CHAT AREA ----- */

.chat-area {
  flex: 1;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideIn 0.5s ease-out;
}

.chat-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

.chat-title {
  color: var(--accent);
  font-size: 16px;
  font-weight: bold;
  letter-spacing: 2px;
  text-shadow: 0 0 12px var(--accent-glow);
}

.chat-members {
  color: var(--text-dim);
  font-size: 11px;
  margin-top: 3px;
  letter-spacing: 0.5px;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.messages::-webkit-scrollbar { width: 6px; }
.messages::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  gap: 14px;
  font-size: 13px;
  letter-spacing: 1px;
  text-align: center;
}

.pulse-icon {
  font-size: 56px;
  opacity: 0.4;
  animation: heartbeat 1.8s ease-in-out infinite;
}

.message {
  max-width: 70%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
  word-wrap: break-word;
  animation: messageIn 0.35s ease-out;
  position: relative;
}

.message.own {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 4px 20px rgba(255, 45, 111, 0.25);
}

.message.other {
  align-self: flex-start;
  background: rgba(26, 32, 64, 0.8);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 4px;
}

.message-sender {
  font-size: 10px;
  color: var(--accent);
  margin-bottom: 4px;
  font-weight: bold;
  letter-spacing: 1px;
}

.message.own .message-sender {
  color: rgba(255, 255, 255, 0.75);
}

.message-time {
  font-size: 9px;
  margin-top: 4px;
  opacity: 0.6;
  text-align: right;
}

/* ----- COMPOSER ----- */

.composer {
  padding: 14px 20px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: rgba(0, 0, 0, 0.15);
}

.composer textarea {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  resize: none;
  max-height: 120px;
  min-height: 44px;
  transition: all 0.25s ease;
}

.composer textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

.send-btn {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.send-btn:hover {
  box-shadow: 0 0 24px var(--accent-glow);
  transform: scale(1.05);
}

.send-btn:active { transform: scale(0.96); }

/* ============================================================
   MODAL
   ============================================================ */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal.show { display: flex; }

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-hi);
  border-radius: 16px;
  padding: 28px;
  max-width: 440px;
  width: 100%;
  animation: zoomIn 0.35s ease-out;
  box-shadow: 0 0 60px rgba(255, 45, 111, 0.2);
}

.modal-card h3 {
  color: var(--accent);
  font-size: 16px;
  letter-spacing: 4px;
  margin-bottom: 18px;
  text-shadow: 0 0 18px var(--accent-glow);
}

.modal-card input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  margin-bottom: 10px;
}

.modal-card input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.modal-actions .btn-secondary { flex: 1; }
.modal-actions .btn-primary { flex: 2; margin-top: 0; }

/* ============================================================
   TOAST
   ============================================================ */

.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 14px 28px;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 13px;
  z-index: 200;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 8px 30px rgba(77, 255, 136, 0.25);
}

.toast.error {
  border-color: var(--red);
  color: var(--red);
  box-shadow: 0 8px 30px rgba(255, 51, 85, 0.25);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

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

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14% { transform: scale(1.15); }
  28% { transform: scale(1); }
  42% { transform: scale(1.18); }
  70% { transform: scale(1); }
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 768px) {
  .app-screen { flex-direction: column; padding: 8px; gap: 8px; }
  .sidebar { width: 100%; max-height: 40vh; }
}