/* ============================================
   LayerChat Admin — Messenger-inspired theme
   Mobile-first | Plus Jakarta Sans
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
  --blue:        #0084ff;
  --blue-dark:   #006fd6;
  --blue-dim:    rgba(0,132,255,.12);
  --navy:        #0f1923;
  --navy-mid:    #141f2b;
  --navy-hover:  #1a2c3d;
  --navy-active: #1f3347;
  --red:         #ef4444;
  --red-dim:     rgba(239,68,68,.12);
  --white:       #ffffff;
  --bg:          #f0f2f5;
  --border:      #e4e6eb;
  --text:        #1c1e21;
  --text-2:      #65676b;
  --navy-text:   #d8e2ed;
  --navy-dim:    #7a8fa3;
  --radius-sm:   0.5rem;
  --radius:      0.75rem;
  --shadow:      0 2px 12px rgba(0,0,0,.08);
  --shadow-lg:   0 12px 48px rgba(0,0,0,.28);
  --t:           0.18s ease;
}

html, body {
  height: 100%;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 15px;
  background: var(--navy);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

button { cursor: pointer; font-family: inherit; border: none; background: none; }
input  { font-family: inherit; }

/* ============================================
   LOGIN
   ============================================ */

.login-page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse 90% 55% at 50% -5%, rgba(0,132,255,.3) 0%, transparent 65%),
    radial-gradient(ellipse 55% 45% at 90% 105%, rgba(0,80,200,.22) 0%, transparent 65%),
    #060c14;
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.035) 1px, transparent 0);
  background-size: 28px 28px;
  pointer-events: none;
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 21rem;
  padding: 2.5rem 2rem 2rem;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 1.5rem;
  background: rgba(12, 22, 34, 0.82);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  box-shadow: 0 0 0 1px rgba(0,132,255,.12), var(--shadow-lg);
  animation: card-in .45s cubic-bezier(.16,1,.3,1) both;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(18px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.login-logo svg {
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 6px 20px rgba(0,132,255,.55));
}

.login-title {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
  margin-bottom: .25rem;
}

.login-sub {
  text-align: center;
  font-size: .8125rem;
  color: var(--navy-dim);
  margin-bottom: 2rem;
}

.field-group { margin-bottom: .875rem; }

.field-group label {
  display: block;
  font-size: .6875rem;
  font-weight: 600;
  color: var(--navy-dim);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: .4rem;
}

.field-wrap { position: relative; }

.field-icon {
  position: absolute;
  left: .875rem;
  top: 50%;
  transform: translateY(-50%);
  width: .9375rem;
  height: .9375rem;
  color: var(--navy-dim);
  pointer-events: none;
}

.field-wrap input {
  width: 100%;
  padding: .75rem .875rem .75rem 2.5rem;
  border: 1.5px solid rgba(255,255,255,.07);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.05);
  font-size: .9375rem;
  color: #fff;
  transition: border-color var(--t), background var(--t);
}

.field-wrap input::placeholder { color: rgba(255,255,255,.22); }

.field-wrap input:focus {
  outline: none;
  border-color: var(--blue);
  background: rgba(0,132,255,.07);
}

.login-error {
  font-size: .8125rem;
  color: #f87171;
  min-height: 1.125rem;
  margin-bottom: .625rem;
  text-align: center;
}

.login-btn {
  position: relative;
  width: 100%;
  padding: .875rem;
  border-radius: var(--radius-sm);
  background: var(--blue);
  color: #fff;
  font-size: .9375rem;
  font-weight: 600;
  overflow: hidden;
  transition: background var(--t), transform .1s ease;
  margin-top: .375rem;
}

.login-btn:hover  { background: var(--blue-dark); }
.login-btn:active { transform: scale(.98); }
.login-btn:disabled { opacity: .6; cursor: not-allowed; }

.btn-spinner {
  display: none;
  width: 1.125rem;
  height: 1.125rem;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.login-btn.loading .btn-text    { visibility: hidden; }
.login-btn.loading .btn-spinner { display: block; }

@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

/* ============================================
   ADMIN LAYOUT
   ============================================ */

.admin-layout {
  display: flex;
  height: 100dvh;
  overflow: hidden;
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar {
  display: flex;
  flex-direction: column;
  width: 100%;
  flex-shrink: 0;
  background: var(--navy);
  overflow: hidden;
}

.admin-layout.chat-open .sidebar { display: none; }

@media (min-width: 768px) {
  .sidebar { width: 320px; display: flex !important; }
  .admin-layout.chat-open .sidebar { display: flex !important; }
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--navy-mid);
  border-bottom: 1px solid rgba(255,255,255,.04);
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: .625rem;
}

.brand-icon {
  width: 2rem;
  height: 2rem;
  border-radius: .5rem;
  background: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(0,132,255,.4);
}

.brand-icon svg { width: 1rem; height: 1rem; }

.brand-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.01em;
}

.brand-dot {
  width: .5rem;
  height: .5rem;
  border-radius: 9999px;
  background: #22c55e;
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,.4); }
  50%       { box-shadow: 0 0 0 4px rgba(34,197,94,.1); }
}

.logout-btn {
  width: 2.125rem;
  height: 2.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: .5rem;
  color: var(--navy-dim);
  transition: background var(--t), color var(--t);
}

.logout-btn svg { width: 1.125rem; height: 1.125rem; }
.logout-btn:hover { background: rgba(255,255,255,.06); color: var(--navy-text); }

.sidebar-section-label {
  padding: .875rem 1rem .375rem;
  font-size: .6875rem;
  font-weight: 600;
  color: var(--navy-dim);
  text-transform: uppercase;
  letter-spacing: .07em;
  flex-shrink: 0;
}

.sidebar-body {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.08) transparent;
}

.sidebar-body::-webkit-scrollbar { width: 3px; }
.sidebar-body::-webkit-scrollbar-track { background: transparent; }
.sidebar-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 9999px; }

.conversations-list { padding: .25rem .5rem .75rem; }

.conv-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--t);
  position: relative;
}

.conv-item:hover     { background: var(--navy-hover); }
.conv-item--selected { background: var(--navy-active); }

.conv-item__avatar {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--blue) 0%, #005ecb 100%);
  color: #fff;
  font-size: .9375rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}

.conv-item__badge {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: .875rem;
  height: .875rem;
  border-radius: 9999px;
  border: 2px solid var(--navy);
}

.conv-item--selected .conv-item__badge { border-color: var(--navy-active); }
.conv-item__badge--waiting { background: #f59e0b; }
.conv-item__badge--active  { background: #22c55e; }

.conv-item__body { flex: 1; min-width: 0; }

.conv-item__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .375rem;
  margin-bottom: .2rem;
}

.conv-item__name {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--navy-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-item--waiting .conv-item__name { color: #fde68a; }

.conv-item__time {
  font-size: .6875rem;
  color: var(--navy-dim);
  flex-shrink: 0;
}

.conv-item__motive {
  display: inline-block;
  font-size: .6875rem;
  font-weight: 600;
  color: var(--navy-dim);
  background: rgba(255,255,255,.06);
  padding: .1rem .45rem;
  border-radius: 9999px;
  margin-bottom: .2rem;
}

.conv-item__preview {
  font-size: .8125rem;
  color: var(--navy-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-item__dot {
  width: .5rem;
  height: .5rem;
  border-radius: 9999px;
  background: var(--blue);
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(0,132,255,.2);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .875rem;
  padding: 3rem 1.5rem;
  color: var(--navy-dim);
  text-align: center;
}

.empty-state svg { width: 3rem; height: 3rem; opacity: .35; }
.empty-state p   { font-size: .875rem; }

/* ============================================
   CHAT MAIN
   ============================================ */

.chat-main {
  flex: 1;
  display: none;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}

.admin-layout.chat-open .chat-main { display: flex; }

@media (min-width: 768px) { .chat-main { display: flex; } }

.chat-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  text-align: center;
  position: relative;
}

.placeholder-blob {
  position: absolute;
  width: 22rem;
  height: 22rem;
  border-radius: 9999px;
  background: radial-gradient(circle, rgba(0,132,255,.05) 0%, transparent 70%);
  pointer-events: none;
}

.chat-placeholder svg { width: 4rem; height: 4rem; color: #b8c4d0; position: relative; }
.chat-placeholder h2  { font-size: 1.125rem; font-weight: 600; color: #8a98a8; position: relative; }
.chat-placeholder p   { font-size: .875rem; color: #a0adb9; position: relative; }

/* ============================================
   CHAT PANEL
   ============================================ */

.chat-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: .625rem;
  padding: .875rem 1rem;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.05);
}

.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 9999px;
  color: var(--text-2);
  transition: background var(--t), color var(--t);
  flex-shrink: 0;
}

.back-btn svg { width: 1.125rem; height: 1.125rem; }
.back-btn:hover { background: var(--border); color: var(--text); }

@media (min-width: 768px) { .back-btn { display: none; } }

.chat-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--blue) 0%, #005ecb 100%);
  color: #fff;
  font-size: .9375rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.chat-header-info h2 {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-header-info p {
  font-size: .75rem;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
}

.btn-join {
  display: flex;
  align-items: center;
  gap: .375rem;
  padding: .5rem .875rem;
  border-radius: 9999px;
  background: var(--blue);
  color: #fff;
  font-size: .8125rem;
  font-weight: 600;
  transition: background var(--t), transform .1s ease, opacity var(--t);
  box-shadow: 0 2px 8px rgba(0,132,255,.3);
}

.btn-join svg    { width: .875rem; height: .875rem; }
.btn-join:hover  { background: var(--blue-dark); }
.btn-join:active { transform: scale(.96); }
.btn-join:disabled { opacity: .6; cursor: not-allowed; }

.btn-close-chat {
  display: flex;
  align-items: center;
  gap: .375rem;
  padding: .5rem .875rem;
  border-radius: 9999px;
  background: var(--red-dim);
  color: var(--red);
  font-size: .8125rem;
  font-weight: 600;
  transition: background var(--t);
}

.btn-close-chat svg   { width: .875rem; height: .875rem; }
.btn-close-chat:hover { background: rgba(239,68,68,.2); }

/* ============================================
   MESSAGES
   ============================================ */

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: .25rem;
  background: var(--bg);
  scrollbar-width: thin;
  scrollbar-color: #cdd3da transparent;
}

.chat-messages::-webkit-scrollbar { width: 3px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: #cdd3da; border-radius: 9999px; }

.client-msg {
  display: flex;
  align-items: flex-end;
  gap: .5rem;
  align-self: flex-start;
  max-width: 78%;
  animation: msg-in .2s ease;
}

.client-msg__avatar {
  width: 1.875rem;
  height: 1.875rem;
  border-radius: 9999px;
  background: #dde1e7;
  color: var(--text-2);
  font-size: .625rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-bottom: .125rem;
}

.client-msg__bubble {
  background: var(--white);
  color: var(--text);
  padding: .625rem .875rem;
  border-radius: 1.125rem 1.125rem 1.125rem .25rem;
  font-size: .9375rem;
  line-height: 1.45;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  word-break: break-word;
}

.client-msg__meta {
  display: flex;
  align-items: center;
  gap: .375rem;
  margin-top: .25rem;
  padding-left: 2.375rem;
}

.client-msg__name { font-size: .6875rem; font-weight: 600; color: var(--text-2); }
.client-msg__time { font-size: .625rem; color: #9ca3af; }

.admin-msg {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  align-self: flex-end;
  max-width: 78%;
  animation: msg-in .2s ease;
}

.admin-msg__bubble {
  background: var(--blue);
  color: #fff;
  padding: .625rem .875rem;
  border-radius: 1.125rem 1.125rem .25rem 1.125rem;
  font-size: .9375rem;
  line-height: 1.45;
  word-break: break-word;
}

.admin-msg__time {
  font-size: .625rem;
  color: #9ca3af;
  margin-top: .25rem;
  padding-right: .125rem;
}

.system-msg {
  text-align: center;
  font-size: .75rem;
  color: var(--text-2);
  font-style: italic;
  padding: .625rem 1rem;
  animation: msg-in .2s ease;
}

@keyframes msg-in {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   CHAT FOOTER
   ============================================ */

.chat-footer {
  flex-shrink: 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}

.waiting-banner {
  display: flex;
  align-items: center;
  gap: .625rem;
  padding: .875rem 1rem;
  background: #fffbeb;
  border-top: 1px solid #fde68a;
  color: #78350f;
  font-size: .8125rem;
  line-height: 1.4;
}

.waiting-banner svg      { width: 1.125rem; height: 1.125rem; color: #f59e0b; flex-shrink: 0; }
.waiting-banner strong   { font-weight: 700; }

.composer {
  display: flex;
  align-items: center;
  gap: .625rem;
  padding: .75rem 1rem;
}

.composer-input {
  flex: 1;
  padding: .6875rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 9999px;
  background: var(--bg);
  font-size: .9375rem;
  color: var(--text);
  transition: border-color var(--t), background var(--t);
}

.composer-input::placeholder { color: #a0adb9; }
.composer-input:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
}

.send-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  background: var(--blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--t), transform .1s ease;
  box-shadow: 0 2px 8px rgba(0,132,255,.35);
}

.send-btn svg    { width: 1.125rem; height: 1.125rem; }
.send-btn:hover  { background: var(--blue-dark); }
.send-btn:active { transform: scale(.94); }