/* MUTA v200.271 - 31-chat-premium-2026.css - PREMIUM CHAT INSPIRED BY پیام‌رسان + هوشمند + WHATSAPP + هوشمند */
:root {
  --chat-bg: #0A0A0A;
  --chat-surface: #121216;
  --chat-surface-2: #1A1A1E;
  --chat-surface-3: #222227;
  --chat-line: #1E1E22;
  --chat-line-2: #2A2A30;
  --chat-gold: #D4AF37;
  --chat-gold-soft: rgba(212,175,55,.12);
  --chat-gold-border: rgba(212,175,55,.22);
  --chat-purple: #7C5CFF;
  --chat-purple-soft: rgba(124,92,255,.12);
  --chat-up: #10b981;
  --chat-down: #ef4444;
  --chat-radius: 18px;
  --chat-radius-sm: 12px;
}

/* Main container - پیام‌رسان Liquid Glass + هوشمند super-app */
.muta-dm {
  display: none;
  flex-direction: column;
  background: linear-gradient(180deg, var(--chat-surface) 0%, var(--chat-bg) 100%);
  border: 1px solid var(--chat-line);
  border-radius: 20px;
  overflow: hidden;
  min-height: 640px;
  max-height: 82vh;
  box-shadow: 
    0 8px 32px rgba(0,0,0,.24),
    0 0 0 1px rgba(255,255,255,.02) inset;
  backdrop-filter: blur(0px);
  position: relative;
}

.muta-dm::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 0%, rgba(212,175,55,.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(124,92,255,.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.muta-dm > * {
  position: relative;
  z-index: 1;
}

/* Header - Liquid Glass 2026 */
.muta-dm-top {
  padding: 14px 18px;
  border-bottom: 1px solid var(--chat-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(18,18,22,.85);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  position: sticky;
  top: 0;
  z-index: 5;
}

.muta-dm-top-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.muta-dm-top-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--chat-gold-soft), var(--chat-purple-soft));
  border: 1px solid var(--chat-gold-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 2px 8px rgba(212,175,55,.12);
}

.muta-dm-top-text b {
  font-weight: 800;
  font-size: .95rem;
  letter-spacing: -.01em;
}

.muta-dm-top-text span {
  font-size: .68rem;
  color: var(--text-faint);
  display: block;
  margin-top: 2px;
}

/* Inner - پیام‌رسان multi-panel */
.muta-dm-inner {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* Sidebar - هوشمند + پیام‌رسان folders */
.muta-dm-sidebar {
  width: 340px;
  min-width: 300px;
  border-left: 1px solid var(--chat-line);
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, rgba(26,26,30,.95) 0%, rgba(18,18,22,.98) 100%);
  backdrop-filter: blur(12px);
  flex-shrink: 0;
  position: relative;
}

.muta-dm-sidebar::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--chat-line), transparent);
}

.muta-dm-search-wrap {
  padding: 12px;
  background: rgba(18,18,22,.6);
  border-bottom: 1px solid var(--chat-line);
  backdrop-filter: blur(8px);
}

#mutaDmSearch {
  width: 100%;
  height: 40px;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  border-radius: 12px;
  padding: 0 14px 0 36px;
  font-size: .85rem;
  color: var(--text);
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  font-family: var(--font-body);
}

#mutaDmSearch:focus {
  border-color: var(--chat-gold-border);
  background: var(--chat-surface-3);
  box-shadow: 0 0 0 3px var(--chat-gold-soft);
  outline: none;
}

#mutaDmSearch::placeholder {
  color: var(--text-faint);
}

/* Filter chips - پیام‌رسان folders inspired */
.muta-dm-filters {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--chat-line);
  background: rgba(18,18,22,.4);
}

.muta-dm-filters::-webkit-scrollbar {
  display: none;
}

.dm-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 99px;
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid var(--chat-line);
  background: var(--chat-surface-2);
  color: var(--text-dim);
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  user-select: none;
}

.dm-filter-chip:hover {
  background: var(--chat-surface-3);
  border-color: var(--chat-line-2);
  transform: translateY(-1px);
}

.dm-filter-chip.active {
  background: var(--chat-gold-soft);
  border-color: var(--chat-gold-border);
  color: var(--chat-gold);
  box-shadow: 0 2px 8px rgba(212,175,55,.12);
}

.dm-filter-chip .count {
  background: rgba(0,0,0,.2);
  padding: 1px 6px;
  border-radius: 99px;
  font-size: .68rem;
  font-variant-numeric: tabular-nums;
}

/* Conversations list - WhatsApp + پیام‌رسان */
#mutaDmConvs {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  -webkit-overflow-scrolling: touch;
}

.dm-conv {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  border: 1px solid transparent;
  background: transparent;
  position: relative;
  overflow: hidden;
}

.dm-conv::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.02), transparent);
  transform: translateX(-100%);
  transition: transform .6s ease;
}

.dm-conv:hover::before {
  transform: translateX(100%);
}

.dm-conv:hover {
  background: rgba(255,255,255,.03);
  border-color: rgba(255,255,255,.06);
  transform: translateX(-2px);
}

.dm-conv.active {
  background: linear-gradient(135deg, var(--chat-gold-soft), rgba(212,175,55,.06));
  border-color: var(--chat-gold-border);
  box-shadow: 
    0 2px 12px rgba(212,175,55,.12),
    0 0 0 1px rgba(212,175,55,.08) inset;
}

.dm-conv-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--chat-gold-soft), var(--chat-purple-soft));
  border: 1px solid var(--chat-gold-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .95rem;
  flex-shrink: 0;
  position: relative;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}

.dm-conv-avatar.online::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 12px;
  height: 12px;
  background: var(--chat-up);
  border: 2px solid var(--chat-surface);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0,0,0,.1);
}

.dm-conv-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dm-conv-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.dm-name {
  font-weight: 700;
  font-size: .88rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -.01em;
  display: flex;
  align-items: center;
  gap: 4px;
}

.dm-name .verified {
  width: 14px;
  height: 14px;
  background: var(--chat-gold);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .6rem;
  color: #000;
}

.dm-time {
  font-size: .68rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
}

.dm-conv.active .dm-time {
  color: var(--chat-gold);
}

.dm-last {
  font-size: .78rem;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 4px;
  line-height: 1.4;
}

.dm-last .check {
  font-size: .7rem;
  color: var(--text-faint);
}

.dm-last .check.read {
  color: #60a5fa;
}

.dm-badge {
  background: linear-gradient(135deg, var(--chat-gold), #B8941F);
  color: #000;
  font-size: .68rem;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 99px;
  min-width: 20px;
  text-align: center;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 2px 6px rgba(212,175,55,.24);
  flex-shrink: 0;
}

/* Search results */
#mutaDmSearchResults {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.dm-search-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  border: 1px solid var(--chat-line);
  background: var(--chat-surface-2);
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
}

.dm-search-item:hover {
  background: var(--chat-gold-soft);
  border-color: var(--chat-gold-border);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,.12);
}

/* Main chat - WhatsApp wallpaper + پیام‌رسان blur */
.muta-dm-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--chat-bg);
  min-height: 0;
  position: relative;
}

.muta-dm-main::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 30% 20%, rgba(212,175,55,.04) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(124,92,255,.03) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Cpath d='M0 0h100v100H0z'/%3E%3C/g%3E%3C/svg%3E");
  opacity: .6;
  pointer-events: none;
}

/* Chat header - Liquid Glass */
#mutaDmHead {
  padding: 12px 16px;
  border-bottom: 1px solid var(--chat-line);
  background: rgba(18,18,22,.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  min-height: 60px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 3;
  box-shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 4px 20px rgba(0,0,0,.12);
}

.dm-back-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  font-size: 1.1rem;
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  color: var(--text-dim);
}

.dm-back-btn:hover {
  background: var(--chat-surface-3);
  border-color: var(--chat-line-2);
  color: var(--text);
  transform: scale(1.05);
}

.dm-back-btn:active {
  transform: scale(.95);
}

#mutaDmHeadText {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.muta-dm-head-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: auto;
}

.muta-dm-head-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-dim);
  transition: all .2s ease;
  font-size: .9rem;
}

.muta-dm-head-btn:hover {
  background: rgba(255,255,255,.08);
  color: var(--text);
  transform: translateY(-1px);
}

/* Messages area - premium */
#mutaDmMessages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  position: relative;
  z-index: 1;
}

/* Date separator - پیام‌رسان style */
.dm-date-sep {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 16px 0 12px;
  position: sticky;
  top: 8px;
  z-index: 2;
}

.dm-date-sep span {
  background: rgba(30,30,36,.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.06);
  color: var(--text-dim);
  font-size: .7rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 99px;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
  letter-spacing: .02em;
}

/* Message group */
.dm-msg-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 2px;
}

.dm-msg-group.mine {
  align-items: flex-end;
}

.dm-msg-group.theirs {
  align-items: flex-start;
}

.dm-msg-group-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  padding: 0 4px;
}

.dm-msg-group.theirs .dm-msg-group-header {
  flex-direction: row;
}

.dm-msg-group.mine .dm-msg-group-header {
  flex-direction: row-reverse;
}

.dm-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* Message bubbles - پیام‌رسان + WhatsApp premium */
.dm-msg {
  max-width: 68%;
  padding: 10px 14px 6px;
  border-radius: 18px;
  font-size: .88rem;
  line-height: 1.6;
  position: relative;
  word-wrap: break-word;
  overflow-wrap: break-word;
  animation: msgIn .3s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 1px 2px rgba(0,0,0,.08);
  transition: transform .15s ease;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(10px) scale(.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.dm-msg:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,.12);
}

.dm-msg.mine {
  background: linear-gradient(135deg, #D4AF37 0%, #C19A2E 100%);
  color: #0a0a0a;
  border-bottom-right-radius: 4px;
  font-weight: 450;
  box-shadow: 
    0 1px 2px rgba(0,0,0,.12),
    0 0 0 1px rgba(212,175,55,.2) inset;
}

.dm-msg.theirs {
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  color: var(--text);
  border-bottom-left-radius: 4px;
  box-shadow: 
    0 1px 2px rgba(0,0,0,.08),
    0 0 0 1px rgba(255,255,255,.02) inset;
}

.dm-msg.mine:first-child {
  border-top-right-radius: 18px;
}

.dm-msg.mine:not(:first-child) {
  border-top-right-radius: 6px;
}

.dm-msg.theirs:first-child {
  border-top-left-radius: 18px;
}

.dm-msg.theirs:not(:first-child) {
  border-top-left-radius: 6px;
}

/* Message content */
.dm-msg-text {
  white-space: pre-wrap;
  word-break: break-word;
}

.dm-msg-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 4px;
  margin-left: 8px;
  float: left;
  clear: both;
}

.dm-msg.mine .dm-msg-footer {
  color: rgba(0,0,0,.6);
}

.dm-msg.theirs .dm-msg-footer {
  color: var(--text-faint);
}

.dm-msg-time {
  font-size: .65rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.dm-msg-status {
  display: inline-flex;
  align-items: center;
  font-size: .7rem;
  letter-spacing: -.05em;
}

.dm-msg-status.sent {
  color: rgba(0,0,0,.5);
}

.dm-msg-status.delivered {
  color: rgba(0,0,0,.6);
}

.dm-msg-status.read {
  color: #0a84ff;
}

.dm-msg.theirs .dm-msg-status {
  display: none;
}

/* Reply preview - پیام‌رسان */
.dm-reply-preview {
  background: rgba(0,0,0,.08);
  border-right: 3px solid var(--chat-gold);
  border-radius: 8px;
  padding: 6px 10px;
  margin-bottom: 6px;
  font-size: .78rem;
}

.dm-msg.mine .dm-reply-preview {
  background: rgba(0,0,0,.12);
  border-right-color: rgba(0,0,0,.3);
}

.dm-reply-name {
  font-weight: 700;
  font-size: .72rem;
  color: var(--chat-gold);
  margin-bottom: 2px;
}

.dm-msg.mine .dm-reply-name {
  color: rgba(0,0,0,.7);
}

.dm-reply-text {
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: .8;
}

/* Typing indicator - WhatsApp */
.dm-typing {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  border-radius: 18px;
  border-bottom-left-radius: 4px;
  max-width: fit-content;
  animation: msgIn .3s ease;
}

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

.dm-typing-dots span {
  width: 6px;
  height: 6px;
  background: var(--text-faint);
  border-radius: 50%;
  animation: typingDot 1.4s infinite;
}

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

.dm-typing-dots span:nth-child(3) {
  animation-delay: .4s;
}

@keyframes typingDot {
  0%, 60%, 100% { transform: translateY(0); opacity: .4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

.dm-typing-text {
  font-size: .75rem;
  color: var(--text-dim);
}

/* Scroll to bottom - پیام‌رسان */
.dm-scroll-bottom {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(30,30,36,.9);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 99px;
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  display: none;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  z-index: 4;
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
}

.dm-scroll-bottom.show {
  display: flex;
  animation: scrollBtnIn .25s cubic-bezier(0.4,0,0.2,1);
}

@keyframes scrollBtnIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px) scale(.9); }
  to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}

.dm-scroll-bottom:hover {
  background: rgba(40,40,46,.95);
  transform: translateX(-50%) translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,.24);
}

/* Input area - Liquid Glass floating bar - 2026 trend */
.muta-dm-input-wrap {
  padding: 12px 14px;
  background: rgba(18,18,22,.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--chat-line);
  display: flex;
  align-items: flex-end;
  gap: 10px;
  position: sticky;
  bottom: 0;
  z-index: 3;
}

.muta-dm-input-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.dm-input-btn {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-dim);
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  font-size: 1rem;
  flex-shrink: 0;
}

.dm-input-btn:hover {
  background: var(--chat-surface-3);
  border-color: var(--chat-line-2);
  color: var(--text);
  transform: translateY(-1px);
}

.dm-input-btn:active {
  transform: scale(.95);
}

.dm-input-field-wrap {
  flex: 1;
  position: relative;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  border-radius: 20px;
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  min-height: 42px;
  display: flex;
  align-items: flex-end;
  padding: 6px 12px;
}

.dm-input-field-wrap:focus-within {
  border-color: var(--chat-gold-border);
  background: var(--chat-surface-3);
  box-shadow: 0 0 0 3px var(--chat-gold-soft);
}

#mutaDmInput {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: .9rem;
  line-height: 1.5;
  font-family: var(--font-body);
  resize: none;
  max-height: 120px;
  min-height: 24px;
  padding: 4px 0;
  width: 100%;
}

#mutaDmInput::placeholder {
  color: var(--text-faint);
}

#mutaDmSend {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--chat-gold), #B8941F);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #000;
  font-size: 1rem;
  flex-shrink: 0;
  transition: all .2s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 2px 8px rgba(212,175,55,.24);
}

#mutaDmSend:hover {
  transform: scale(1.05) translateY(-1px);
  box-shadow: 0 4px 16px rgba(212,175,55,.32);
}

#mutaDmSend:active {
  transform: scale(.95);
}

#mutaDmSend:disabled {
  opacity: .5;
  transform: none;
  cursor: not-allowed;
}

/* Welcome card - premium */
.chat-welcome {
  background: linear-gradient(180deg, var(--chat-surface) 0%, var(--chat-bg) 100%);
  border: 1px solid var(--chat-line);
  border-radius: 20px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,.16);
}

.chat-welcome-cover {
  position: relative;
  overflow: hidden;
}

.chat-welcome-cover img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform .6s cubic-bezier(0.4,0,0.2,1);
}

.chat-welcome:hover .chat-welcome-cover img {
  transform: scale(1.03);
}

.chat-welcome-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,10,10,.8) 100%);
}

.chat-welcome-content {
  padding: 24px;
}

.chat-welcome-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -.02em;
  line-height: 1.3;
}

.chat-welcome-text {
  font-size: .88rem;
  color: var(--text-dim);
  line-height: 1.9;
  margin-bottom: 14px;
}

.chat-welcome-steps {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: steps;
}

.chat-welcome-steps li {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: var(--chat-surface-2);
  border: 1px solid var(--chat-line);
  border-radius: 12px;
  counter-increment: steps;
  transition: all .2s ease;
}

.chat-welcome-steps li:hover {
  background: var(--chat-surface-3);
  border-color: var(--chat-line-2);
  transform: translateX(-2px);
}

.chat-welcome-steps li::before {
  content: counter(steps);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--chat-gold-soft);
  border: 1px solid var(--chat-gold-border);
  color: var(--chat-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .8rem;
  flex-shrink: 0;
}

/* ===== MOBILE PREMIUM - پیام‌رسان + هوشمند super-app ===== */
@media (max-width: 768px) {
  #view-chat .container {
    padding-left: 8px;
    padding-right: 8px;
  }
  
  .muta-dm {
    min-height: calc(100dvh - 56px - 16px);
    max-height: calc(100dvh - 56px - 8px);
    border-radius: 16px;
    margin: 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
    border-radius: 16px 16px 0 0;
  }
  
  .muta-dm-inner {
    flex-direction: column;
  }
  
  .muta-dm-sidebar {
    width: 100% !important;
    min-width: 0 !important;
    border-left: none !important;
    border-bottom: 1px solid var(--chat-line);
    flex: 1;
    max-height: 100%;
  }
  
  .muta-dm-main {
    width: 100%;
    flex: 1;
    min-height: 0;
    display: none;
  }
  
  .muta-dm.mobile-chat-open .muta-dm-sidebar {
    display: none !important;
  }
  .muta-dm.mobile-chat-open .muta-dm-main {
    display: flex !important;
  }
  .muta-dm:not(.mobile-chat-open) .muta-dm-sidebar {
    display: flex !important;
  }
  .muta-dm:not(.mobile-chat-open) .muta-dm-main {
    display: none !important;
  }
  
  .dm-back-btn {
    display: flex !important;
  }
  
  .muta-dm-top {
    padding: 12px 14px;
  }
  
  .muta-dm-search-wrap {
    padding: 10px;
  }
  
  #mutaDmSearch {
    height: 42px;
    font-size: 16px;
    border-radius: 12px;
  }
  
  .muta-dm-filters {
    padding: 8px 10px;
    gap: 6px;
  }
  
  .dm-filter-chip {
    padding: 6px 12px;
    font-size: .72rem;
  }
  
  #mutaDmConvs {
    padding: 6px;
    gap: 2px;
  }
  
  .dm-conv {
    padding: 12px 10px;
    border-radius: 12px;
  }
  
  .dm-conv-avatar {
    width: 42px;
    height: 42px;
  }
  
  #mutaDmMessages {
    padding: 12px 10px 16px;
  }
  
  .dm-msg {
    max-width: 82%;
    font-size: .85rem;
    padding: 9px 12px 6px;
    border-radius: 16px;
  }
  
  .muta-dm-input-wrap {
    padding: 8px 10px;
    gap: 8px;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
  }
  
  .dm-input-field-wrap {
    border-radius: 18px;
    min-height: 40px;
  }
  
  #mutaDmInput {
    font-size: 16px !important;
  }
  
  #mutaDmSend {
    width: 40px;
    height: 40px;
  }
  
  .dm-input-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }
  
  #mutaDmHead {
    padding: 10px 12px !important;
    min-height: 56px !important;
  }
  
  .chat-welcome {
    border-radius: 16px;
    margin: 0;
  }
  
  .chat-welcome-cover img {
    height: 180px !important;
  }
  
  .chat-welcome-content {
    padding: 18px !important;
  }
}

@media (max-width: 480px) {
  .muta-dm {
    border-radius: 12px 12px 0 0;
  }
  
  .dm-msg {
    max-width: 86%;
  }
  
  .muta-dm-sidebar {
    width: 100% !important;
  }
}

/* Scrollbars */
#mutaDmConvs::-webkit-scrollbar,
#mutaDmMessages::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

#mutaDmConvs::-webkit-scrollbar-thumb,
#mutaDmMessages::-webkit-scrollbar-thumb {
  background: var(--chat-line-2);
  border-radius: 99px;
}

#mutaDmConvs::-webkit-scrollbar-track,
#mutaDmMessages::-webkit-scrollbar-track {
  background: transparent;
}

#mutaDmConvs,
#mutaDmMessages {
  scrollbar-width: thin;
  scrollbar-color: var(--chat-line-2) transparent;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.muta-dm {
  animation: fadeIn .3s ease;
}