/* ── RESET & VARIABLES ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0d0d0d;
  --surface:  #141414;
  --surface2: #1c1c1c;
  --border:   #2a2a2a;
  --accent:   #e8ff47;
  --accent2:  #47ffe8;
  --text:     #e8e8e8;
  --muted:    #666;
  --danger:   #ff4747;
  --radius:   6px;
  --font-mono: 'IBM Plex Mono', monospace;
  --font-sans: 'IBM Plex Sans', sans-serif;
}

html, body { height: 100%; overflow: hidden; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
}

/* ── SCREENS ───────────────────────────────────────── */
.screen { display: none; height: 100vh; }
.screen.active { display: flex; }

/* ── LOGIN ─────────────────────────────────────────── */
#login-screen {
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(232,255,71,0.06) 0%, transparent 70%),
    var(--bg);
}

.login-box {
  width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.login-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.logo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  margin-bottom: 8px;
}

.login-header h1 {
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: 4px;
  color: var(--accent);
}

.login-header p {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 1px;
}

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

.field label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--muted);
}

.field input {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.field input:focus { border-color: var(--accent); }
.field input::placeholder { color: var(--muted); }

#login-form { display: flex; flex-direction: column; gap: 12px; }

button {
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  border: none;
  border-radius: var(--radius);
  transition: all 0.15s;
}

#login-btn {
  background: var(--accent);
  color: #0d0d0d;
  font-weight: 600;
  padding: 11px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 1px;
  margin-top: 4px;
}
#login-btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
#login-btn:active { transform: translateY(0); }

.secondary-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 10px 16px;
  letter-spacing: 1px;
}
.secondary-btn:hover { border-color: var(--text); color: var(--text); }

.error-msg { color: var(--danger); font-size: 12px; min-height: 16px; }

/* ── CHAT LAYOUT ───────────────────────────────────── */
#chat-screen { flex-direction: row; }

.chat-layout { display: flex; width: 100%; height: 100vh; }

/* ── SIDEBAR ───────────────────────────────────────── */
.sidebar {
  width: 200px;
  min-width: 200px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 14px;
  gap: 12px;
}

.sidebar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.room-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1px;
}

.logout-btn {
  background: transparent;
  color: var(--muted);
  padding: 4px;
  border-radius: 4px;
  display: flex;
}
.logout-btn:hover { color: var(--danger); background: rgba(255,71,71,0.08); }

.me-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: var(--surface2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #0d0d0d;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.me-tag span:not(.online-dot) {
  font-size: 12px;
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.online-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #47ff8a;
  flex-shrink: 0;
  box-shadow: 0 0 6px #47ff8a;
}

.online-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--muted);
  padding: 0 4px;
}

.online-users { display: flex; flex-direction: column; gap: 6px; overflow-y: auto; flex: 1; }

.online-user-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius);
}

.online-user-item .avatar {
  width: 24px; height: 24px;
  font-size: 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
}

.online-user-item span { font-size: 12px; color: var(--muted); }

/* ── CHAT MAIN ─────────────────────────────────────── */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg);
}

/* ── MESSAGES AREA ─────────────────────────────────── */
.messages-area {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scroll-behavior: smooth;
}

.messages-area::-webkit-scrollbar { width: 4px; }
.messages-area::-webkit-scrollbar-track { background: transparent; }
.messages-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.day-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  color: var(--muted);
}
.day-divider::before, .day-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.day-divider span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
}

/* ── MESSAGE BUBBLE ────────────────────────────────── */
.msg-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 10px;
  animation: msgIn 0.2s ease;
}

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

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

.msg-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px 2px;
}

.msg-meta .avatar { width: 22px; height: 22px; font-size: 9px; }

.msg-meta .name {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent2);
  font-family: var(--font-mono);
}

.msg-meta.mine .name { color: var(--accent); }

.msg-meta .ts {
  font-size: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
}

.msg-row {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  max-width: 68%;
  position: relative;
}

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

.bubble {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 13px;
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
  position: relative;
  cursor: pointer;
  transition: background 0.1s;
  max-width: 100%;
}

.bubble:hover { background: var(--surface2); }

.msg-group.mine .bubble {
  background: rgba(232,255,71,0.07);
  border-color: rgba(232,255,71,0.2);
}
.msg-group.mine .bubble:hover { background: rgba(232,255,71,0.12); }

/* deleted message */
.bubble.deleted {
  color: var(--muted);
  font-style: italic;
  font-size: 12px;
  cursor: default;
}

/* edited tag */
.edited-tag {
  font-size: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  margin-left: 6px;
}

/* ── REPLY QUOTE ───────────────────────────────────── */
.reply-quote {
  border-left: 2px solid var(--accent);
  padding: 4px 8px;
  margin-bottom: 6px;
  font-size: 11px;
  color: var(--muted);
  border-radius: 0 4px 4px 0;
  background: rgba(232,255,71,0.04);
  cursor: pointer;
}

.reply-quote .rq-name {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  margin-bottom: 2px;
  display: block;
}

/* ── IMAGE MESSAGE ─────────────────────────────────── */
.msg-img {
  max-width: 240px;
  max-height: 200px;
  border-radius: 8px;
  object-fit: cover;
  display: block;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: opacity 0.15s;
}
.msg-img:hover { opacity: 0.85; }

/* ── VOICE MESSAGE ─────────────────────────────────── */
.voice-msg {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 180px;
}

.voice-play-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #0d0d0d;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: filter 0.15s;
}
.voice-play-btn:hover { filter: brightness(1.15); }

.voice-waveform {
  flex: 1;
  height: 24px;
  display: flex;
  align-items: center;
  gap: 2px;
}

.voice-waveform span {
  display: block;
  width: 3px;
  background: var(--muted);
  border-radius: 2px;
  transition: background 0.1s;
}

.voice-duration {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

/* ── REACTIONS ─────────────────────────────────────── */
.reactions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px 6px 2px;
}

.react-chip {
  display: flex;
  align-items: center;
  gap: 3px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px 8px;
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s;
}
.react-chip:hover { border-color: var(--accent); background: rgba(232,255,71,0.06); }
.react-chip.mine { border-color: var(--accent); background: rgba(232,255,71,0.1); }
.react-chip .count { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }

/* ── REPLY BAR ─────────────────────────────────────── */
.reply-bar {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  gap: 10px;
}
.reply-bar.hidden { display: none; }

.reply-bar-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  color: var(--muted);
  font-size: 12px;
}

#cancel-reply {
  background: transparent;
  color: var(--muted);
  padding: 2px 6px;
  font-size: 13px;
  border-radius: 4px;
}
#cancel-reply:hover { color: var(--danger); }

/* ── INPUT BAR ─────────────────────────────────────── */
.input-bar {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 12px 16px 14px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.attach-btn, .voice-btn {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: color 0.15s, border-color 0.15s;
}
.attach-btn:hover, .voice-btn:hover { color: var(--text); border-color: var(--text); }
.voice-btn.recording {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(255,71,71,0.1);
  animation: pulse 1s infinite;
}
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(255,71,71,0.4); } 50% { box-shadow: 0 0 0 6px rgba(255,71,71,0); } }

.voice-recording-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--danger);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.voice-recording-indicator.hidden { display: none; }

.rec-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--danger);
  animation: blink 1s infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.2; } }

#msg-input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 9px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  resize: none;
  outline: none;
  min-height: 36px;
  max-height: 120px;
  line-height: 1.5;
  transition: border-color 0.15s;
  overflow-y: auto;
}
#msg-input:focus { border-color: var(--accent); }
#msg-input::placeholder { color: var(--muted); }

.send-btn {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #0d0d0d;
  border-radius: var(--radius);
  flex-shrink: 0;
  padding: 0;
}
.send-btn:hover { filter: brightness(1.1); }
.send-btn:active { transform: scale(0.96); }

/* ── CONTEXT MENU ──────────────────────────────────── */
.ctx-menu {
  position: fixed;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  z-index: 1000;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  min-width: 140px;
}
.ctx-menu.hidden { display: none; }

.ctx-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 14px;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  border-radius: 0;
  letter-spacing: 0.3px;
}
.ctx-menu button:hover { background: var(--surface); }
.ctx-menu .delete-action { color: var(--danger); }

/* ── EMOJI PICKER ──────────────────────────────────── */
.emoji-picker {
  position: fixed;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  z-index: 1001;
  padding: 8px;
  display: flex;
  gap: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.emoji-picker.hidden { display: none; }

.emoji-picker button {
  font-size: 20px;
  padding: 4px 6px;
  background: transparent;
  border-radius: 4px;
  line-height: 1;
}
.emoji-picker button:hover { background: var(--surface); }

/* ── IMAGE LIGHTBOX ────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox.hidden { display: none; }

.lightbox-bg {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.9);
}

#lightbox-img {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
  object-fit: contain;
}

#lightbox-close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px; height: 36px;
  border-radius: 50%;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

/* ── MODAL ─────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.7);
}
.modal.hidden { display: none; }

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 380px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-box label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--muted);
}

#edit-input {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  resize: vertical;
  outline: none;
}
#edit-input:focus { border-color: var(--accent); }

.modal-actions { display: flex; gap: 8px; justify-content: flex-end; }
.modal-actions .secondary-btn { padding: 8px 14px; }
.modal-actions .send-btn { width: auto; padding: 8px 16px; font-size: 13px; font-weight: 600; }

/* ── UTILITIES ─────────────────────────────────────── */
.hidden { display: none !important; }

/* scrollbar */
textarea::-webkit-scrollbar { width: 4px; }
textarea::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }