/* ==========================================================================
   chatexpress - Design System
   ========================================================================== */

:root {
  --bg-0: #05050a;
  --bg-1: #0b0b16;
  --bg-2: #12121f;
  --bg-glass: rgba(22, 22, 38, 0.6);
  --bg-glass-light: rgba(255, 255, 255, 0.05);
  --border-soft: rgba(255, 255, 255, 0.08);
  --border-soft-2: rgba(255, 255, 255, 0.14);
  --text-0: #f5f5fb;
  --text-1: #b7b8cc;
  --text-2: #7d7e96;
  --accent: #7c5cff;
  --accent-2: #00e0c6;
  --accent-3: #ff5ca8;
  --accent-warn: #ffb020;
  --grad-main: linear-gradient(135deg, #7c5cff 0%, #00c2ff 50%, #00e0c6 100%);
  --grad-bubble-me: linear-gradient(135deg, #7c5cff 0%, #5a7cff 100%);
  --grad-bg: radial-gradient(circle at 20% 0%, rgba(124,92,255,0.20), transparent 40%),
             radial-gradient(circle at 90% 10%, rgba(0,224,198,0.16), transparent 45%),
             radial-gradient(circle at 50% 100%, rgba(255,92,168,0.12), transparent 45%);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.45);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.35);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  width: 100%; height: 100%;
  background: var(--bg-0);
  color: var(--text-0);
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
#app { position: relative; width: 100%; height: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; color: inherit; background: none; border: none; outline: none; }
a { color: inherit; text-decoration: none; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.28); }
::-webkit-scrollbar-track { background: transparent; }
::selection { background: rgba(124,92,255,0.4); }

/* ---------------- Background Ambient ---------------- */
.bg-ambient {
  position: fixed; inset: 0; z-index: 0;
  background: var(--bg-1);
  background-image: var(--grad-bg);
  overflow: hidden;
}
.bg-ambient::before, .bg-ambient::after {
  content: '';
  position: absolute;
  width: 60vmax; height: 60vmax;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: floatBlob 22s var(--ease) infinite alternate;
}
.bg-ambient::before {
  background: radial-gradient(circle, #7c5cff, transparent 70%);
  top: -20%; left: -10%;
}
.bg-ambient::after {
  background: radial-gradient(circle, #00e0c6, transparent 70%);
  bottom: -25%; right: -10%;
  animation-delay: -8s;
}
@keyframes floatBlob {
  0% { transform: translate(0,0) scale(1); }
  50% { transform: translate(6%, 8%) scale(1.15); }
  100% { transform: translate(-4%, -6%) scale(0.95); }
}

/* ---------------- Utility ---------------- */
.hidden { display: none !important; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.spinner {
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   Auth Screens
   ========================================================================== */
.auth-wrap {
  position: relative; z-index: 1;
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  overflow-y: auto;
}
.auth-card {
  width: 100%; max-width: 420px;
  background: var(--bg-glass);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(30px) saturate(160%);
  box-shadow: var(--shadow-lg);
  padding: 40px 32px;
  animation: cardIn 0.6s var(--ease) both;
  position: relative;
  overflow: hidden;
}
.auth-card::before {
  content: '';
  position: absolute; top: -2px; left: -2px; right: -2px; height: 3px;
  background: var(--grad-main);
  filter: blur(1px);
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.auth-logo {
  display: flex; align-items: center; gap: 10px;
  justify-content: center;
  margin-bottom: 6px;
}
.auth-logo .logo-icon {
  width: 44px; height: 44px;
  border-radius: 14px;
  background: var(--grad-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: 0 8px 24px rgba(124,92,255,0.45);
  animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(124,92,255,0.45); transform: scale(1); }
  50% { box-shadow: 0 8px 34px rgba(0,224,198,0.5); transform: scale(1.04); }
}
.auth-logo .logo-text {
  font-size: 24px; font-weight: 800; letter-spacing: -0.5px;
  background: var(--grad-main);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.auth-subtitle { text-align: center; color: var(--text-2); font-size: 13.5px; margin-bottom: 28px; }
.auth-tabs {
  display: flex; background: rgba(255,255,255,0.04); border-radius: 12px; padding: 4px; margin-bottom: 24px;
  position: relative;
}
.auth-tab {
  flex: 1; text-align: center; padding: 10px 0; border-radius: 9px; font-size: 14px; font-weight: 600;
  color: var(--text-2); position: relative; z-index: 1; transition: color 0.3s var(--ease);
}
.auth-tab.active { color: #fff; }
.auth-tab-bg {
  position: absolute; top: 4px; bottom: 4px; left: 4px;
  width: calc(50% - 4px);
  background: var(--grad-main);
  border-radius: 9px;
  transition: transform 0.35s var(--ease);
  box-shadow: 0 4px 16px rgba(124,92,255,0.4);
}
.auth-tab-bg.pos-1 { transform: translateX(100%); }

.field { margin-bottom: 16px; position: relative; }
.field label {
  display: block; font-size: 12.5px; font-weight: 600; color: var(--text-1); margin-bottom: 7px;
  letter-spacing: 0.2px;
}
.field-input-wrap {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.045);
  border: 1.5px solid var(--border-soft);
  border-radius: 12px;
  padding: 0 14px;
  height: 48px;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.field-input-wrap:focus-within {
  border-color: var(--accent);
  background: rgba(124,92,255,0.06);
  box-shadow: 0 0 0 4px rgba(124,92,255,0.12);
}
.field-input-wrap i { color: var(--text-2); font-size: 15px; width: 16px; text-align: center; }
.field-input-wrap input { flex: 1; height: 100%; font-size: 14.5px; }
.field-input-wrap input::placeholder { color: var(--text-2); }
.field-toggle-pw { color: var(--text-2); font-size: 14px; padding: 4px; }
.field-toggle-pw:hover { color: var(--text-0); }
.field-error { color: #ff6b81; font-size: 12px; margin-top: 6px; display: none; }
.field-error.show { display: block; animation: shakeX 0.4s; }
@keyframes shakeX {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}

.checkbox-row {
  display: flex; align-items: flex-start; gap: 10px; margin-bottom: 22px;
  font-size: 12.5px; color: var(--text-1); line-height: 1.5;
}
.checkbox-row .chk {
  width: 19px; height: 19px; min-width: 19px; border-radius: 6px;
  border: 1.5px solid var(--border-soft-2);
  display: flex; align-items: center; justify-content: center;
  margin-top: 1px; transition: all 0.2s var(--ease);
}
.checkbox-row .chk.checked {
  background: var(--grad-main); border-color: transparent;
}
.checkbox-row .chk i { font-size: 11px; opacity: 0; transform: scale(0.5); transition: all 0.2s var(--ease); }
.checkbox-row .chk.checked i { opacity: 1; transform: scale(1); }
.checkbox-row a { color: var(--accent-2); font-weight: 600; }
.checkbox-row a:hover { text-decoration: underline; }

.btn-primary {
  width: 100%; height: 50px;
  border-radius: 13px;
  background: var(--grad-main);
  color: #fff; font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 10px 30px rgba(124,92,255,0.35);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), filter 0.2s;
  position: relative; overflow: hidden;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(124,92,255,0.45); }
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-primary:disabled { opacity: 0.6; pointer-events: none; }
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: none;
}
.btn-primary.shine::after { animation: shine 1.1s var(--ease); }
@keyframes shine { to { transform: translateX(120%); } }

.btn-secondary {
  width: 100%; height: 46px; border-radius: 13px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-soft);
  color: var(--text-0); font-weight: 600; font-size: 14px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: all 0.2s var(--ease);
}
.btn-secondary:hover { background: rgba(255,255,255,0.09); border-color: var(--border-soft-2); }

.link-btn { color: var(--accent-2); font-size: 13px; font-weight: 600; text-align: center; display: block; margin-top: 18px; }
.link-btn:hover { text-decoration: underline; }

.auth-note { text-align: center; font-size: 12px; color: var(--text-2); margin-top: 22px; display: flex; align-items: center; justify-content: center; gap: 6px; }
.auth-note i { color: var(--accent-2); }

/* Page password lock screen */
.lock-icon-wrap {
  width: 68px; height: 68px; border-radius: 20px; margin: 0 auto 20px;
  background: var(--grad-main);
  display: flex; align-items: center; justify-content: center; font-size: 28px;
  box-shadow: 0 12px 30px rgba(124,92,255,0.4);
  animation: lockBounce 0.6s var(--ease);
}
@keyframes lockBounce {
  0% { transform: scale(0.5) rotate(-15deg); opacity: 0; }
  60% { transform: scale(1.1) rotate(5deg); }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

/* Toast */
#toast-root {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 999; display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none;
}
.toast {
  background: rgba(20,20,32,0.92);
  border: 1px solid var(--border-soft-2);
  color: #fff; padding: 12px 20px; border-radius: 12px;
  font-size: 13.5px; font-weight: 500;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(20px);
  display: flex; align-items: center; gap: 10px;
  animation: toastIn 0.35s var(--ease);
  max-width: 90vw;
}
.toast.error { border-color: rgba(255,92,120,0.4); }
.toast.error i { color: #ff6b78; }
.toast.success i { color: var(--accent-2); }
.toast.leaving { animation: toastOut 0.3s var(--ease) forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(-16px) scale(0.9); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(-10px) scale(0.92); } }

/* ==========================================================================
   Main App Shell
   ========================================================================== */
.app-shell {
  position: relative; z-index: 1;
  width: 100%; height: 100%;
  display: grid;
  grid-template-columns: 84px 340px 1fr;
}
@media (max-width: 900px) {
  .app-shell { grid-template-columns: 0 1fr; }
  .app-shell.mobile-chat-open { grid-template-columns: 0 0 1fr; }
  .rail { display: none; }
}

/* -------- Rail (leftmost nav) -------- */
.rail {
  background: rgba(10,10,18,0.6);
  border-right: 1px solid var(--border-soft);
  display: flex; flex-direction: column; align-items: center;
  padding: 20px 0;
  backdrop-filter: blur(20px);
}
.rail-logo {
  width: 42px; height: 42px; border-radius: 13px;
  background: var(--grad-main); display: flex; align-items: center; justify-content: center;
  font-size: 18px; margin-bottom: 28px;
  box-shadow: 0 6px 18px rgba(124,92,255,0.4);
  cursor: pointer;
  transition: transform 0.3s var(--ease);
}
.rail-logo:hover { transform: rotate(-8deg) scale(1.05); }
.rail-nav { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.rail-btn {
  width: 50px; height: 50px; border-radius: 15px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-2); font-size: 19px;
  position: relative;
  transition: all 0.25s var(--ease);
}
.rail-btn:hover { background: rgba(255,255,255,0.06); color: var(--text-0); }
.rail-btn.active { background: rgba(124,92,255,0.16); color: var(--accent); }
.rail-btn.active::before {
  content: ''; position: absolute; left: -14px; top: 50%; transform: translateY(-50%);
  width: 4px; height: 22px; border-radius: 4px; background: var(--grad-main);
}
.rail-btn .badge {
  position: absolute; top: 4px; right: 4px;
  min-width: 16px; height: 16px; border-radius: 8px;
  background: var(--accent-3); color: #fff; font-size: 10px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; padding: 0 4px;
  box-shadow: 0 0 0 2px var(--bg-1);
}
.rail-avatar {
  width: 44px; height: 44px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.25s var(--ease);
}
.rail-avatar:hover { border-color: var(--border-soft-2); }

/* -------- Sidebar (list panel) -------- */
.sidebar {
  background: rgba(14,14,24,0.55);
  border-right: 1px solid var(--border-soft);
  display: flex; flex-direction: column;
  backdrop-filter: blur(20px);
  min-width: 0;
}
.sidebar-header {
  padding: 22px 20px 14px;
  display: flex; align-items: center; justify-content: space-between;
}
.sidebar-header h2 { font-size: 20px; font-weight: 800; letter-spacing: -0.3px; }
.sidebar-header-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 11px;
  background: rgba(255,255,255,0.05);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-1); font-size: 14px;
  transition: all 0.2s var(--ease);
}
.icon-btn:hover { background: var(--grad-main); color: #fff; transform: scale(1.06); }

.search-box {
  margin: 4px 20px 14px;
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-soft);
  border-radius: 11px; padding: 0 12px; height: 40px;
}
.search-box i { color: var(--text-2); font-size: 13px; }
.search-box input { flex: 1; font-size: 13.5px; }

.conv-list { flex: 1; overflow-y: auto; padding: 4px 10px 12px; }
.conv-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 10px; border-radius: 15px;
  cursor: pointer; margin-bottom: 3px;
  position: relative;
  transition: background 0.2s var(--ease);
  animation: itemIn 0.4s var(--ease) both;
}
@keyframes itemIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: translateX(0); } }
.conv-item:hover { background: rgba(255,255,255,0.045); }
.conv-item.active { background: rgba(124,92,255,0.14); }
.conv-item.active .conv-name { color: #fff; }

.avatar {
  width: 48px; height: 48px; min-width: 48px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 21px; position: relative; flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
}
.avatar.sm { width: 34px; height: 34px; min-width: 34px; font-size: 15px; border-radius: 11px; }
.avatar.xs { width: 26px; height: 26px; min-width: 26px; font-size: 12px; border-radius: 8px; }
.avatar.lg { width: 84px; height: 84px; min-width: 84px; font-size: 34px; border-radius: 22px; }
.online-dot {
  position: absolute; bottom: -2px; right: -2px;
  width: 13px; height: 13px; border-radius: 50%;
  background: #2ecc71; border: 2.5px solid var(--bg-1);
}
.conv-info { flex: 1; min-width: 0; }
.conv-top-row { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin-bottom: 3px; }
.conv-name { font-size: 14.5px; font-weight: 700; color: var(--text-0); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; align-items: center; gap: 5px; }
.conv-name .pin-ic { font-size: 10px; color: var(--accent-warn); }
.conv-time { font-size: 11px; color: var(--text-2); white-space: nowrap; }
.conv-bottom-row { display: flex; align-items: center; justify-content: space-between; gap: 6px; }
.conv-preview { font-size: 12.5px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.conv-preview.typing { color: var(--accent-2); font-weight: 600; }
.conv-preview .deleted-ic { font-style: italic; opacity: 0.8; }
.unread-badge {
  min-width: 20px; height: 20px; padding: 0 6px; border-radius: 10px;
  background: var(--grad-main); color: #fff; font-size: 11px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 10px rgba(124,92,255,0.4);
  animation: badgePop 0.3s var(--ease);
}
@keyframes badgePop { from { transform: scale(0); } to { transform: scale(1); } }

.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 40px 24px; color: var(--text-2); gap: 14px; height: 100%;
}
.empty-state .ic { font-size: 44px; opacity: 0.5; }
.empty-state h3 { color: var(--text-1); font-size: 15px; font-weight: 700; }
.empty-state p { font-size: 12.5px; line-height: 1.6; }

.fab {
  position: absolute; bottom: 24px; right: 24px;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--grad-main);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px;
  box-shadow: 0 10px 28px rgba(124,92,255,0.5);
  transition: transform 0.25s var(--ease);
}
.fab:hover { transform: scale(1.08) rotate(90deg); }

/* -------- Chat panel -------- */
.chat-panel {
  display: flex; flex-direction: column;
  background: rgba(6,6,12,0.35);
  min-width: 0; position: relative;
}
.chat-header {
  height: 72px; padding: 0 22px;
  display: flex; align-items: center; gap: 14px;
  border-bottom: 1px solid var(--border-soft);
  backdrop-filter: blur(20px);
  background: rgba(10,10,18,0.4);
  flex-shrink: 0;
}
.chat-header .back-btn { display: none; font-size: 18px; color: var(--text-1); }
@media (max-width: 900px) { .chat-header .back-btn { display: flex; } }
.chat-header-info { flex: 1; min-width: 0; cursor: pointer; }
.chat-header-name { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.chat-header-status { font-size: 12px; color: var(--text-2); margin-top: 2px; height: 16px; overflow: hidden; }
.chat-header-status.typing-active { color: var(--accent-2); font-weight: 600; }
.chat-header-actions { display: flex; gap: 8px; }

.typing-dots { display: inline-flex; gap: 3px; align-items: center; }
.typing-dots span {
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent-2);
  animation: typingBounce 1.2s infinite ease-in-out;
}
.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }
@keyframes typingBounce { 0%, 60%, 100% { transform: translateY(0); opacity: 0.5; } 30% { transform: translateY(-4px); opacity: 1; } }

.messages-scroll {
  flex: 1; overflow-y: auto; padding: 20px 24px;
  display: flex; flex-direction: column; gap: 2px;
}
.msg-day-sep {
  text-align: center; color: var(--text-2); font-size: 11.5px; font-weight: 600;
  margin: 18px 0 14px; position: relative;
}
.msg-day-sep span {
  background: rgba(255,255,255,0.06); padding: 5px 14px; border-radius: 20px;
}

.msg-row {
  display: flex; gap: 9px; margin: 5px 0; max-width: 100%;
  animation: msgIn 0.35s var(--ease) both;
}
@keyframes msgIn { from { opacity: 0; transform: translateY(10px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.msg-row.mine { flex-direction: row-reverse; }
.msg-row .avatar { align-self: flex-end; }
.msg-row.grouped .avatar { visibility: hidden; }
.msg-col { display: flex; flex-direction: column; max-width: 62%; }
.msg-row.mine .msg-col { align-items: flex-end; }
@media (max-width: 900px) { .msg-col { max-width: 78%; } }

.msg-sender-name { font-size: 11.5px; color: var(--text-2); margin: 0 4px 3px; font-weight: 600; }
.msg-bubble-wrap { display: flex; align-items: flex-end; gap: 6px; position: relative; }
.msg-row.mine .msg-bubble-wrap { flex-direction: row-reverse; }

.msg-bubble {
  padding: 10px 14px; border-radius: 18px;
  font-size: 14.5px; line-height: 1.5; word-break: break-word; white-space: pre-wrap;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border-soft);
  position: relative;
  transition: transform 0.15s var(--ease);
}
.msg-row.mine .msg-bubble {
  background: var(--grad-bubble-me); border: none; color: #fff;
}
.msg-row:not(.mine) .msg-bubble { border-bottom-left-radius: 6px; }
.msg-row.mine .msg-bubble { border-bottom-right-radius: 6px; }
.msg-row.grouped:not(.mine) .msg-bubble { border-bottom-left-radius: 18px; }
.msg-row.grouped.mine .msg-bubble { border-bottom-right-radius: 18px; }
.msg-bubble:hover { transform: translateY(-1px); }
.msg-bubble.deleted { background: rgba(255,255,255,0.04); color: var(--text-2); font-style: italic; font-size: 13px; }
.msg-bubble.deleted i { margin-right: 6px; }

.msg-reply-quote {
  font-size: 12px; padding: 6px 10px; margin-bottom: 5px; border-radius: 8px;
  background: rgba(0,0,0,0.15); border-left: 2.5px solid var(--accent-2);
  color: var(--text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 220px;
}

.msg-meta-time { font-size: 10.5px; color: var(--text-2); white-space: nowrap; padding-bottom: 2px; }
.msg-read-tick { font-size: 10px; color: var(--accent-2); margin-top: 3px; display: flex; align-items: center; gap: 3px; }
.msg-read-tick.unread { color: var(--text-2); }

.msg-actions {
  position: absolute; top: -14px;
  display: flex; gap: 3px;
  background: rgba(20,20,34,0.95);
  border: 1px solid var(--border-soft-2);
  border-radius: 10px; padding: 3px;
  opacity: 0; pointer-events: none;
  transform: translateY(4px) scale(0.9);
  transition: all 0.18s var(--ease);
  box-shadow: var(--shadow-md);
  z-index: 5;
}
.msg-row.mine .msg-actions { right: 46px; }
.msg-row:not(.mine) .msg-actions { left: 46px; }
.msg-bubble-wrap:hover .msg-actions { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }
.msg-actions button { width: 26px; height: 26px; border-radius: 7px; font-size: 12px; color: var(--text-1); display: flex; align-items: center; justify-content: center; }
.msg-actions button:hover { background: rgba(255,255,255,0.1); color: #fff; }
.msg-actions button.danger:hover { background: rgba(255,90,110,0.2); color: #ff6b78; }

.system-msg { text-align: center; color: var(--text-2); font-size: 12px; margin: 10px 0; }
.system-msg span { background: rgba(255,255,255,0.05); padding: 5px 12px; border-radius: 14px; }

/* Composer */
.composer {
  padding: 14px 20px 18px;
  border-top: 1px solid var(--border-soft);
  background: rgba(10,10,18,0.4);
  flex-shrink: 0;
}
.reply-preview {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.05); border-radius: 12px; padding: 8px 12px; margin-bottom: 10px;
  animation: itemIn 0.25s var(--ease);
}
.reply-preview .bar { width: 3px; height: 28px; border-radius: 3px; background: var(--accent-2); }
.reply-preview .txt { flex: 1; font-size: 12.5px; color: var(--text-1); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.reply-preview .close { color: var(--text-2); font-size: 13px; }

.composer-row { display: flex; align-items: flex-end; gap: 10px; }
.composer-box {
  flex: 1; display: flex; align-items: flex-end; gap: 8px;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--border-soft);
  border-radius: 20px; padding: 10px 8px 10px 16px;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  max-height: 140px;
}
.composer-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(124,92,255,0.12); }
.composer-box textarea {
  flex: 1; resize: none; font-size: 14.5px; line-height: 1.5; max-height: 100px; padding: 5px 0;
}
.composer-box textarea::placeholder { color: var(--text-2); }
.emoji-btn { color: var(--text-2); font-size: 18px; padding: 6px; align-self: center; transition: color 0.2s; }
.emoji-btn:hover { color: var(--accent-warn); }

.send-btn {
  width: 46px; height: 46px; min-width: 46px; border-radius: 50%;
  background: var(--grad-main); color: #fff; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 22px rgba(124,92,255,0.4);
  transition: transform 0.2s var(--ease), opacity 0.2s;
}
.send-btn:hover { transform: scale(1.08) rotate(8deg); }
.send-btn:active { transform: scale(0.94); }
.send-btn:disabled { opacity: 0.4; pointer-events: none; }

.emoji-picker {
  position: absolute; bottom: 86px; right: 20px;
  background: rgba(20,20,34,0.97);
  border: 1px solid var(--border-soft-2);
  border-radius: 16px; padding: 12px;
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px;
  box-shadow: var(--shadow-lg);
  width: 300px;
  animation: popIn 0.25s var(--ease);
  z-index: 20;
}
@keyframes popIn { from { opacity: 0; transform: scale(0.9) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.emoji-picker button { font-size: 20px; padding: 6px; border-radius: 8px; transition: background 0.15s; }
.emoji-picker button:hover { background: rgba(255,255,255,0.1); transform: scale(1.15); }

.no-chat-selected {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px; color: var(--text-2);
}
.no-chat-selected .big-ic {
  width: 96px; height: 96px; border-radius: 28px; background: var(--grad-main); opacity: 0.15;
  display: flex; align-items: center; justify-content: center; font-size: 42px;
  animation: floatIcon 3s ease-in-out infinite;
}
@keyframes floatIcon { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.no-chat-selected h3 { color: var(--text-1); font-size: 17px; font-weight: 700; }
.no-chat-selected p { font-size: 13px; }

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn 0.25s var(--ease);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-card {
  width: 100%; max-width: 400px;
  background: var(--bg-2);
  border: 1px solid var(--border-soft-2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px;
  animation: cardIn 0.35s var(--ease);
  max-height: 86vh; overflow-y: auto;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.modal-header h3 { font-size: 18px; font-weight: 800; }
.modal-close { width: 32px; height: 32px; border-radius: 10px; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: var(--text-1); }
.modal-close:hover { background: rgba(255,255,255,0.12); }
.modal-tabs { display: flex; gap: 8px; margin-bottom: 20px; background: rgba(255,255,255,0.04); border-radius: 12px; padding: 4px; }
.modal-tab { flex: 1; text-align: center; padding: 9px 0; border-radius: 9px; font-size: 13px; font-weight: 700; color: var(--text-2); transition: all 0.25s var(--ease); }
.modal-tab.active { background: var(--grad-main); color: #fff; box-shadow: 0 4px 14px rgba(124,92,255,0.35); }

.join-code-display {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  background: rgba(124,92,255,0.1); border: 1.5px dashed var(--accent);
  border-radius: 14px; padding: 18px; margin: 16px 0;
  font-size: 26px; font-weight: 800; letter-spacing: 4px;
  color: var(--accent-2);
}
.copy-btn { font-size: 13px; color: var(--text-2); }
.copy-btn:hover { color: var(--accent-2); }

.friend-result-card {
  display: flex; align-items: center; gap: 12px; padding: 14px;
  background: rgba(255,255,255,0.04); border-radius: 14px; margin-top: 14px;
  animation: itemIn 0.3s var(--ease);
}
.friend-result-card .info { flex: 1; }
.friend-result-card .name { font-weight: 700; font-size: 14px; }
.friend-result-card .uid { font-size: 12px; color: var(--text-2); }

.member-list-item { display: flex; align-items: center; gap: 10px; padding: 8px 4px; }
.member-list-item .name { flex: 1; font-size: 13.5px; font-weight: 600; }

.emoji-color-picker { display: flex; gap: 10px; margin-bottom: 16px; align-items: center; justify-content: center; }
.color-swatch { width: 28px; height: 28px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; transition: all 0.2s; }
.color-swatch.selected { border-color: #fff; transform: scale(1.15); }
.emoji-select-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; margin-bottom: 16px; max-height: 140px; overflow-y: auto; }
.emoji-select-grid button { font-size: 20px; padding: 6px; border-radius: 8px; }
.emoji-select-grid button.selected { background: rgba(124,92,255,0.25); }

/* Profile panel */
.profile-avatar-big {
  width: 90px; height: 90px; border-radius: 26px; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center; font-size: 38px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
}
.profile-userid { text-align: center; color: var(--text-2); font-size: 12.5px; margin-bottom: 4px; }
.profile-userid .copy-uid { margin-left: 6px; cursor: pointer; }

/* Terms modal text */
.terms-text { font-size: 12.5px; line-height: 1.8; color: var(--text-1); max-height: 340px; overflow-y: auto; padding-right: 6px; }
.terms-text h4 { color: var(--text-0); font-size: 13.5px; margin: 14px 0 6px; }
.terms-text h4:first-child { margin-top: 0; }

/* Loading overlay */
.loading-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bg-0);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s var(--ease);
}
.loading-overlay .logo-icon { width: 60px; height: 60px; font-size: 26px; }

/* Responsive tweaks */
@media (max-width: 900px) {
  .sidebar { position: absolute; inset: 0; z-index: 5; width: 100%; }
  .chat-panel { position: absolute; inset: 0; z-index: 6; transform: translateX(100%); transition: transform 0.35s var(--ease); }
  .app-shell.chat-open .chat-panel { transform: translateX(0); }
  .app-shell.chat-open .sidebar { display: none; }
}