*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --border: #2e3248;
  --accent: #4f8ef7;
  --accent-dark: #3a6fd8;
  --success: #2ecc71;
  --warning: #f39c12;
  --danger: #e74c3c;
  --info: #3498db;
  --text: #e4e6f0;
  --text-muted: #7a7f9a;
  --radius: 10px;
  --sidebar-w: 220px;
}

body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); display: flex; min-height: 100vh; font-size: 14px; }

/* ── Login ───────────────────────────────────────────────────────────────── */
.login-screen {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
}
.login-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 40px; width: 100%; max-width: 380px;
}
.login-logo { font-size: 24px; font-weight: 800; color: var(--accent); margin-bottom: 24px; display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 36px; height: 36px; color: var(--accent); flex-shrink: 0; }
.login-card h2 { font-size: 20px; margin-bottom: 24px; }
.btn-full { width: 100%; justify-content: center; }

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w); background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; padding: 24px 0 16px;
}
.logo { display: flex; align-items: center; gap: 10px; padding: 0 20px 28px; font-size: 18px; font-weight: 700; color: var(--accent); }
.logo .brand-icon { width: 32px; height: 32px; }
.nav-links { list-style: none; flex: 1; overflow-y: auto; }
.nav-links li { margin: 2px 8px; }
.nav-item { display: block; padding: 8px 14px; border-radius: 8px; color: var(--text-muted); text-decoration: none; transition: all 0.15s; font-weight: 500; }
.nav-item:hover { background: var(--surface2); color: var(--text); }
.nav-item.active { background: rgba(79,142,247,0.15); color: var(--accent); }

.sidebar-footer { padding: 0 12px; display: flex; flex-direction: column; gap: 8px; }
.smpp-indicator { padding: 10px 14px; background: var(--surface2); border-radius: 8px; display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-muted); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--danger); flex-shrink: 0; }
.dot.connected { background: var(--success); animation: pulse 2s infinite; }
.dot.disconnected { background: var(--danger); }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

.user-info { display: flex; align-items: center; gap: 8px; padding: 6px 14px; font-size: 12px; color: var(--text-muted); }
.role-badge { padding: 2px 7px; border-radius: 20px; font-size: 10px; font-weight: 700; text-transform: uppercase; }
.role-badge.admin { background: rgba(79,142,247,0.2); color: var(--accent); }
.role-badge.user { background: rgba(46,204,113,0.15); color: var(--success); }
.btn-logout { width: 100%; margin: 0 2px; color: var(--text-muted); }
.btn-logout:hover { color: var(--danger); border-color: var(--danger); }

/* ── Content ─────────────────────────────────────────────────────────────── */
.content { margin-left: var(--sidebar-w); flex: 1; padding: 32px; max-width: 1100px; }
h1 { font-size: 22px; font-weight: 700; margin-bottom: 24px; color: var(--text); }
.page { display: none; }
.page.active { display: block; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.inner-card { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-top: 16px; margin-bottom: 4px; }

/* ── Stats ───────────────────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; }
.stat-card.success { border-color: rgba(46,204,113,0.3); }
.stat-card.danger  { border-color: rgba(231,76,60,0.3); }
.stat-card.warning { border-color: rgba(243,156,18,0.3); }
.stat-card.info    { border-color: rgba(52,152,219,0.3); }
.stat-value { font-size: 28px; font-weight: 700; margin-bottom: 6px; }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.danger  .stat-value { color: var(--danger); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.info    .stat-value { color: var(--info); }
.stat-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

.section-title { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text-muted); margin-bottom: 16px; }

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 500; color: var(--text-muted); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 7px;
  padding: 10px 12px; color: var(--text); font-size: 14px; font-family: inherit; transition: border-color 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent); }
.form-group textarea { resize: vertical; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-row .form-group.flex-2 { flex: 2; }
.hint { color: var(--text-muted); font-size: 11px; font-weight: 400; }
.char-count { text-align: right; font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn { padding: 9px 18px; border-radius: 7px; border: 1px solid var(--border); background: var(--surface2); color: var(--text); cursor: pointer; font-size: 13px; font-weight: 500; transition: all 0.15s; display: inline-flex; align-items: center; gap: 6px; }
.btn:hover { background: var(--border); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-danger { background: rgba(231,76,60,0.1); border-color: rgba(231,76,60,0.4); color: var(--danger); }
.btn-danger:hover { background: rgba(231,76,60,0.2); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-row { display: flex; gap: 10px; margin-top: 4px; flex-wrap: wrap; }

/* ── Tabs ────────────────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 4px; margin-bottom: 16px; }
.tab { padding: 8px 16px; border-radius: 7px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); cursor: pointer; font-size: 13px; font-weight: 500; }
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── File drop ───────────────────────────────────────────────────────────── */
.file-drop { border: 2px dashed var(--border); border-radius: 7px; padding: 20px; text-align: center; color: var(--text-muted); cursor: pointer; transition: border-color 0.15s; }
.file-drop:hover { border-color: var(--accent); }
.file-drop a { color: var(--accent); }
.file-name { display: block; margin-top: 6px; color: var(--text); font-size: 12px; }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--surface2); }
th { padding: 12px 14px; text-align: left; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); white-space: nowrap; }
td { padding: 11px 14px; border-top: 1px solid var(--border); font-size: 13px; }
tr:hover td { background: var(--surface2); }
.td-truncate { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-queued    { background: rgba(122,127,154,0.2); color: var(--text-muted); }
.badge-sent      { background: rgba(79,142,247,0.15); color: var(--accent); }
.badge-delivered { background: rgba(46,204,113,0.15); color: var(--success); }
.badge-failed    { background: rgba(231,76,60,0.15);  color: var(--danger); }
.badge-pending   { background: rgba(243,156,18,0.15); color: var(--warning); }
.badge-running   { background: rgba(79,142,247,0.15); color: var(--accent); }
.badge-done      { background: rgba(46,204,113,0.15); color: var(--success); }
.badge-admin     { background: rgba(79,142,247,0.2);  color: var(--accent); }
.badge-user      { background: rgba(46,204,113,0.15); color: var(--success); }
.badge-active    { background: rgba(46,204,113,0.15); color: var(--success); }
.badge-inactive  { background: rgba(231,76,60,0.1);   color: var(--danger); }

/* ── Result boxes ────────────────────────────────────────────────────────── */
.result-box { margin-top: 16px; padding: 12px 16px; border-radius: 7px; font-size: 13px; }
.result-box.success { background: rgba(46,204,113,0.1); border: 1px solid rgba(46,204,113,0.3); color: var(--success); }
.result-box.error   { background: rgba(231,76,60,0.1);  border: 1px solid rgba(231,76,60,0.3);  color: var(--danger); }
.hidden { display: none !important; }

/* ── Filters / toolbars ──────────────────────────────────────────────────── */
.filters { display: flex; gap: 10px; margin-bottom: 16px; align-items: center; }
.filters select { background: var(--surface); border: 1px solid var(--border); border-radius: 7px; padding: 8px 12px; color: var(--text); font-size: 13px; }
.contacts-toolbar { display: flex; gap: 10px; margin-bottom: 16px; align-items: center; }
.contacts-toolbar select { background: var(--surface); border: 1px solid var(--border); border-radius: 7px; padding: 8px 12px; color: var(--text); font-size: 13px; }
.users-toolbar { margin-bottom: 12px; }

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pagination { display: flex; gap: 6px; margin-top: 16px; justify-content: flex-end; }
.page-btn { padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text-muted); cursor: pointer; font-size: 12px; }
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn:hover:not(.active) { background: var(--surface2); }

/* ── Status detail ───────────────────────────────────────────────────────── */
.status-detail { background: var(--bg); border: 1px solid var(--border); border-radius: 7px; padding: 14px; font-family: monospace; font-size: 12px; color: var(--text-muted); line-height: 1.8; }

/* ── Misc ────────────────────────────────────────────────────────────────── */
.link-btn { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 12px; padding: 0; }
.link-btn:hover { text-decoration: underline; }

/* ── Nav separator ───────────────────────────────────────────────────────── */
.nav-sep {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: var(--text-muted); padding: 14px 22px 4px;
  opacity: 0.6;
}

/* ── File list (MMS attachment preview) ──────────────────────────────────── */
.file-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.file-chip {
  display: flex; align-items: center; gap: 6px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 10px; font-size: 12px;
}
.file-chip .chip-thumb { width: 28px; height: 28px; object-fit: cover; border-radius: 4px; }
.file-chip .chip-name  { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-chip .chip-rm    { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 14px; line-height: 1; padding: 0 2px; }

/* ── Inbox ───────────────────────────────────────────────────────────────── */
.inbox-badge {
  display: inline-block; background: var(--danger); color: #fff;
  font-size: 10px; font-weight: 700; border-radius: 10px;
  padding: 1px 6px; margin-left: 4px; vertical-align: middle;
}
.inbox-toolbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.inbox-stats { font-size: 12px; color: var(--text-muted); }
.view-toggle { display: flex; gap: 4px; }
.view-toggle .btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── Thread view ─────────────────────────────────────────────────────────── */
.thread-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.thread-header { display: flex; align-items: center; gap: 12px; padding: 14px 18px; cursor: pointer; transition: background 0.15s; }
.thread-header:hover { background: var(--surface2); }
.thread-avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; color: #fff; flex-shrink: 0; }
.thread-info { flex: 1; min-width: 0; }
.thread-from { font-weight: 600; font-size: 14px; }
.thread-preview { font-size: 12px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
.thread-meta { text-align: right; flex-shrink: 0; }
.thread-time { font-size: 11px; color: var(--text-muted); }
.thread-count { display: inline-block; background: var(--surface2); border-radius: 12px; padding: 2px 8px; font-size: 11px; margin-top: 4px; color: var(--text-muted); }
.thread-unread .thread-from { color: var(--accent); }
.thread-unread .thread-count { background: var(--accent); color: #fff; }
.thread-messages { display: none; border-top: 1px solid var(--border); padding: 12px 18px; }
.thread-messages.open { display: block; }
.thread-msg { display: flex; gap: 10px; margin-bottom: 14px; }
.thread-msg:last-child { margin-bottom: 0; }
.thread-msg-body { background: var(--surface2); border-radius: 0 10px 10px 10px; padding: 10px 14px; font-size: 13px; line-height: 1.6; flex: 1; white-space: pre-wrap; word-break: break-word; }
.thread-msg-time { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.thread-msg-actions { display: flex; gap: 6px; margin-top: 8px; }
tr.unread td { background: rgba(79,142,247,0.05); }
tr.unread td:first-child::before { content: ''; display: inline-block; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; }
.unread-dot { display: inline-block; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; flex-shrink: 0; }

/* ── Inbound message preview ─────────────────────────────────────────────── */
.inbound-preview {
  background: var(--surface2); border-left: 3px solid var(--accent);
  border-radius: 0 7px 7px 0; padding: 12px 16px;
  font-size: 13px; color: var(--text-muted); line-height: 1.6;
}
.inbound-preview strong { color: var(--text); display: block; margin-bottom: 4px; }

/* ── Modal ───────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center; z-index: 2000;
}
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; width: 100%; max-width: 520px;
  padding: 0; overflow: hidden;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 18px; cursor: pointer; line-height: 1; padding: 2px 6px;
  border-radius: 4px;
}
.modal-close:hover { background: var(--surface2); color: var(--text); }
.modal-body { padding: 20px 24px; }
.modal-footer {
  padding: 16px 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
}
.modal .result-box { margin: 0 24px 16px; }

/* ── Message view modal ──────────────────────────────────────────────────── */
.msg-view-meta {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 12px;
  font-size: 13px; margin-bottom: 16px; color: var(--text-muted);
}
.msg-view-meta span:nth-child(odd) { font-weight: 600; color: var(--text); white-space: nowrap; }
.msg-view-body {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px; font-size: 14px; line-height: 1.7; white-space: pre-wrap;
  word-break: break-word; max-height: 320px; overflow-y: auto;
}
.td-msg { cursor: pointer; }
.td-msg:hover { color: var(--accent); text-decoration: underline; }

/* ── Batch action bar ────────────────────────────────────────────────────── */
.batch-bar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--accent);
  border-radius: var(--radius); padding: 10px 16px; margin-bottom: 12px;
}
.batch-bar span { font-size: 13px; font-weight: 600; color: var(--accent); margin-right: 4px; }

/* ── Connections table ───────────────────────────────────────────────────── */
.btn-xs { padding: 3px 8px; font-size: 11px; }
.action-btns { display: flex; gap: 4px; white-space: nowrap; }

/* ── Toggle switch ───────────────────────────────────────────────────────── */
.toggle-switch { position: relative; display: inline-block; width: 36px; height: 20px; cursor: pointer; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; background: var(--border);
  border-radius: 20px; transition: background 0.2s;
}
.toggle-slider::before {
  content: ''; position: absolute;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; left: 3px; top: 3px; transition: transform 0.2s;
}
.toggle-switch input:checked + .toggle-slider { background: var(--accent); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(16px); }

@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .logo span:last-child, .nav-item { display: none; }
  .smpp-indicator span, .user-info { display: none; }
  .content { margin-left: 60px; padding: 16px; }
  .form-row { flex-direction: column; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}