/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: 'Segoe UI', system-ui, sans-serif; font-size: 15px; }
html { height: -webkit-fill-available; }
body { border: 8px solid orange !important; }

:root {
  --green: #25D366;
  --green-dark: #128C7E;
  --green-light: #DCF8C6;
  --sidebar-bg: #111B21;
  --sidebar-hover: #202C33;
  --sidebar-active: #2A3942;
  --header-bg: #202C33;
  --chat-bg: #0B141A;
  --bubble-mine: #005C4B;
  --bubble-theirs: #202C33;
  --text-primary: #E9EDEF;
  --text-secondary: #8696A0;
  --input-bg: #2A3942;
  --border: #2A3942;
  --online: #25D366;
  --red: #F15C6D;
}

body { background: var(--chat-bg); color: var(--text-primary); }

/* ===== AUTH PAGE ===== */
.auth-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0B141A 0%, #111B21 100%);
}
.auth-container {
  background: var(--header-bg);
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%; max-width: 400px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.auth-logo { text-align: center; margin-bottom: 32px; }
.auth-logo h1 { font-size: 1.8rem; color: var(--text-primary); margin-top: 12px; }
.auth-logo p { color: var(--text-secondary); font-size: 0.9rem; margin-top: 4px; }
.auth-form .form-group { margin-bottom: 18px; }
.auth-form label { display: block; color: var(--text-secondary); font-size: 0.8rem; margin-bottom: 6px; letter-spacing: 0.5px; text-transform: uppercase; }
.auth-form input {
  width: 100%; padding: 12px 16px;
  background: var(--input-bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-primary); font-size: 1rem; outline: none;
  transition: border-color .2s;
}
.auth-form input:focus { border-color: var(--green); }

/* ===== BUTTONS ===== */
.btn-primary {
  width: 100%; padding: 13px; background: var(--green);
  color: #fff; border: none; border-radius: 8px;
  font-size: 1rem; font-weight: 600; cursor: pointer; margin-top: 8px;
  transition: background .2s;
}
.btn-primary:hover { background: var(--green-dark); }

/* ===== ALERTS ===== */
.alert-error {
  background: rgba(241,92,109,.15); border: 1px solid var(--red);
  color: #f88; padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 0.9rem;
}
.alert-success {
  background: rgba(37,211,102,.12); border: 1px solid var(--green);
  color: var(--green); padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 0.9rem;
}

/* ===== APP SHELL ===== */
.app-shell { display: flex; height: 100vh; height: 100dvh; overflow: hidden; position: fixed; width: 100%; top: 0; left: 0; }

/* ===== SIDEBAR ===== */
.sidebar {
  width: 380px; min-width: 280px; flex-shrink: 0;
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  border-right: 1px solid var(--border);
}
.sidebar-header {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; background: var(--header-bg);
  min-height: 60px;
}
.my-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--green-dark); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem; flex-shrink: 0;
}
.my-info { flex: 1; overflow: hidden; }
.my-name { display: block; font-weight: 600; font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.my-status { font-size: 0.75rem; color: var(--green); }
.sidebar-actions { display: flex; gap: 4px; }
.icon-btn { font-size: 1.1rem; text-decoration: none; padding: 6px; border-radius: 50%; transition: background .15s; cursor: pointer; }
.icon-btn:hover { background: var(--border); }

.search-bar { padding: 8px 12px; background: var(--sidebar-bg); }
.search-bar input {
  width: 100%; padding: 9px 14px; border-radius: 20px;
  background: var(--input-bg); border: none; color: var(--text-primary);
  font-size: 0.9rem; outline: none;
}

.contact-list { flex: 1; overflow-y: auto; }
.contact-list::-webkit-scrollbar { width: 4px; }
.contact-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.contact-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; cursor: pointer; text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,.04);
  transition: background .15s;
}
.contact-item:hover { background: var(--sidebar-hover); }
.contact-item.active { background: var(--sidebar-active); }

.contact-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--green-dark); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.2rem; flex-shrink: 0;
  position: relative;
}
.contact-avatar.online::after {
  content: ''; position: absolute; bottom: 2px; right: 2px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--online); border: 2px solid var(--sidebar-bg);
}
.contact-info { flex: 1; overflow: hidden; }
.contact-top, .contact-bottom { display: flex; justify-content: space-between; align-items: center; }
.contact-top { margin-bottom: 3px; }
.contact-name { font-weight: 500; font-size: 0.97rem; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.contact-time { font-size: 0.72rem; color: var(--text-secondary); flex-shrink: 0; margin-left: 8px; }
.contact-preview { font-size: 0.82rem; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.contact-preview em { font-style: italic; }
.unread-badge {
  background: var(--green); color: #fff; border-radius: 12px;
  font-size: 0.72rem; font-weight: 700; min-width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center; padding: 0 5px;
  flex-shrink: 0; margin-left: 6px;
}
.empty-contacts { padding: 32px 16px; text-align: center; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.8; }
.empty-contacts a { color: var(--green); }

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

.welcome-panel {
  align-items: center; justify-content: center;
}
.welcome-content { text-align: center; color: var(--text-secondary); }
.welcome-content h2 { margin-top: 20px; font-size: 1.4rem; color: var(--text-primary); }
.welcome-content p { margin-top: 8px; font-size: 0.9rem; }

/* Chat header */
.chat-header {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; background: var(--header-bg);
  min-height: 60px; border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.back-btn { color: var(--text-secondary); text-decoration: none; font-size: 1.3rem; display: none; }
.chat-header-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--green-dark); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; position: relative; flex-shrink: 0;
}
.chat-header-avatar.online::after {
  content: ''; position: absolute; bottom: 1px; right: 1px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--online); border: 2px solid var(--header-bg);
}
.chat-header-info { flex: 1; }
.chat-header-name { display: block; font-weight: 600; }
.chat-header-status { font-size: 0.78rem; color: var(--text-secondary); }

/* Messages */
.messages-area {
  flex: 1; overflow-y: auto; padding: 12px 16px;
  display: flex; flex-direction: column; gap: 2px;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.messages-area::-webkit-scrollbar { width: 5px; }
.messages-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.loading-msgs { text-align: center; color: var(--text-secondary); font-size: 0.85rem; padding: 20px; }

/* Message bubbles */
.msg { display: flex; margin-bottom: 2px; }
.msg.mine { justify-content: flex-end; }
.msg.theirs { justify-content: flex-start; }
.msg-bubble {
  max-width: 65%; padding: 8px 12px 6px;
  border-radius: 8px; position: relative; word-break: break-word;
  font-size: 0.93rem; line-height: 1.4;
}
.msg.mine .msg-bubble { background: var(--bubble-mine); border-bottom-right-radius: 2px; }
.msg.theirs .msg-bubble { background: var(--bubble-theirs); border-bottom-left-radius: 2px; }
.msg-text { display: block; }
.msg-time {
  display: inline-block; font-size: 0.68rem; color: var(--text-secondary);
  margin-left: 8px; float: right; margin-top: 4px; white-space: nowrap;
}
.read-tick { font-size: 0.75rem; color: var(--text-secondary); margin-left: 2px; }
.read-tick.read { color: #53BDEB; }
.msg-img { max-width: 260px; max-height: 300px; border-radius: 6px; cursor: pointer; display: block; }
.msg-video { max-width: 260px; border-radius: 6px; display: block; }
.msg-file {
  display: flex; align-items: center; gap: 8px;
  color: var(--green); text-decoration: none; font-size: 0.88rem;
  background: rgba(255,255,255,.06); padding: 8px 12px; border-radius: 6px;
}

/* Input area */
.chat-input-area {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; background: var(--header-bg);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.attach-btn {
  font-size: 1.3rem; cursor: pointer; color: var(--text-secondary);
  transition: color .15s; flex-shrink: 0;
}
.attach-btn:hover { color: var(--green); }
.file-preview {
  display: flex; align-items: center; gap: 6px;
  background: var(--input-bg); border-radius: 16px; padding: 4px 10px;
  font-size: 0.8rem; color: var(--text-primary); flex-shrink: 0; max-width: 180px;
}
#fileName { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clear-file { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 0.9rem; }
#msgInput {
  flex: 1; padding: 10px 16px; border-radius: 20px;
  background: var(--input-bg); border: none; color: var(--text-primary);
  font-size: 0.95rem; outline: none;
}
.send-btn {
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: var(--green); color: #fff; font-size: 1.1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: background .15s;
}
.send-btn:hover { background: var(--green-dark); }
.send-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ===== ADMIN PAGE ===== */
.admin-page { background: var(--chat-bg); min-height: 100vh; padding: 24px; }
.admin-container { max-width: 900px; margin: 0 auto; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.admin-header h2 { font-size: 1.4rem; }
.btn-back { color: var(--green); text-decoration: none; font-size: 0.9rem; }
.admin-card { background: var(--header-bg); border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.admin-card h3 { margin-bottom: 16px; color: var(--text-secondary); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px; }
.admin-form { display: flex; gap: 10px; flex-wrap: wrap; }
.admin-form input {
  flex: 1; min-width: 160px; padding: 10px 14px;
  background: var(--input-bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-primary); font-size: 0.95rem; outline: none;
}
.admin-form input:focus { border-color: var(--green); }
.admin-form .btn-primary { width: auto; padding: 10px 24px; margin-top: 0; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.admin-table th { text-align: left; padding: 10px 12px; color: var(--text-secondary); border-bottom: 1px solid var(--border); font-weight: 500; }
.admin-table td { padding: 12px 12px; border-bottom: 1px solid rgba(255,255,255,.04); }
.admin-table tr:last-child td { border-bottom: none; }
.badge { background: var(--green); color: #fff; font-size: 0.7rem; padding: 2px 7px; border-radius: 10px; margin-left: 6px; }
.admin-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.btn-sm { padding: 5px 12px; border: none; border-radius: 6px; cursor: pointer; font-size: 0.82rem; font-weight: 600; transition: opacity .15s; }
.btn-sm:hover { opacity: .8; }
.btn-warning { background: #F0A500; color: #fff; }
.btn-danger { background: var(--red); color: #fff; }
.admin-actions input[type=text] {
  padding: 5px 10px; background: var(--input-bg); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text-primary); font-size: 0.82rem; outline: none;
}

/* ===== CALL BUTTONS IN HEADER ===== */
.header-call-btns { display:flex; gap:4px; margin-left:auto; }
.call-icon-btn {
  background:none; border:none; font-size:1.25rem; cursor:pointer;
  padding:7px; border-radius:50%; transition:background .15s; color:var(--text-primary);
}
.call-icon-btn:hover { background:var(--border); }

/* ===== VOICE RECORD BUTTON ===== */
.voice-record-btn {
  font-size:1.3rem; background:none; border:none; cursor:pointer;
  color:var(--text-secondary); padding:6px; border-radius:50%; flex-shrink:0;
  transition:background .15s,color .15s; user-select:none; -webkit-user-select:none;
}
.voice-record-btn:hover { color:var(--green); }
.voice-record-btn.recording { color:#e53935; animation:blink .6s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.4} }

.voice-preview {
  display:flex; align-items:center; gap:8px; flex:1;
  background:rgba(229,57,53,.12); border-radius:20px;
  padding:6px 14px; color:#f88; font-size:0.85rem;
}
.rec-dot { color:#e53935; font-size:0.7rem; animation:blink .8s infinite; }

/* ===== AUDIO MESSAGE ===== */
.msg-audio { width:220px; height:36px; border-radius:20px; outline:none; }

/* ===== CALL MESSAGE BUBBLE ===== */
.msg-call { display:flex; align-items:center; gap:6px; font-size:0.88rem; padding:2px 0; }
.call-missed   { color:#F15C6D; }
.call-answered { color:#25D366; }

/* ===== INCOMING CALL POPUP ===== */
#incomingCallPopup {
  position:fixed; inset:0; z-index:9999;
  display:flex; align-items:flex-end; justify-content:center;
  padding-bottom:30px; pointer-events:none;
}
.incoming-call-box {
  pointer-events:all;
  background:#1F2C34; border-radius:18px; padding:16px 20px;
  display:flex; align-items:center; gap:14px;
  box-shadow:0 8px 40px rgba(0,0,0,.7);
  animation:slideUp .3s ease;
  min-width:300px; max-width:380px;
}
@keyframes slideUp { from{transform:translateY(80px);opacity:0} to{transform:translateY(0);opacity:1} }
.inc-avatar {
  width:48px; height:48px; border-radius:50%; background:var(--green-dark);
  color:#fff; font-size:1.3rem; font-weight:700;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.inc-info { flex:1; }
.inc-name  { font-weight:600; color:#fff; font-size:1rem; }
.inc-kind  { font-size:0.82rem; color:var(--text-secondary); margin-top:2px; }
.inc-actions { display:flex; gap:10px; }
.btn-accept-call, .btn-decline-call {
  width:46px; height:46px; border-radius:50%; border:none;
  font-size:1.3rem; cursor:pointer; transition:transform .15s;
}
.btn-accept-call  { background:#25D366; }
.btn-decline-call { background:#e53935; }
.btn-accept-call:hover, .btn-decline-call:hover { transform:scale(1.1); }

/* ===== RESPONSIVE ===== */
@media (max-width: 700px) {
  .sidebar { width: 100%; position: absolute; z-index: 10; height: 100vh; }
  .chat-page-body .sidebar { display: none; }
  .back-btn { display: block; }
  .msg-bubble { max-width: 85%; }
}