:root {
  --color-bg: #05070c;
  --color-bg-2: #0a0e16;
  --color-bg-elevated: #0f1420;
  --color-bg-card: #131a28;
  --color-border: #1f2a3d;
  --color-border-bright: #2d3c56;
  --color-text: #ffffff;
  --color-text-soft: #c7d1e0;
  --color-text-muted: #7d8aa0;
  --color-primary: #6ec1e4;
  --color-accent: #f0b04c;
  --color-accent-2: #ff7a45;
  --color-success: #46c28f;
  --color-danger: #e86970;
  --color-warning: #f0b04c;
  --color-info: #6ec1e4;
  --gradient-accent: linear-gradient(135deg, #f0b04c 0%, #ff7a45 100%);
  --font-sans: 'Roboto', system-ui, sans-serif;
  --font-display: 'Roboto Slab', Georgia, serif;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14.5px;
  background: var(--color-bg);
  color: var(--color-text-soft);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 800; margin: 0 0 0.5em; line-height: 1.2; color: var(--color-text); letter-spacing: -0.01em; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: #9fd8f2; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg-2); }
::-webkit-scrollbar-thumb { background: var(--color-border-bright); border-radius: 10px; }

/* ==========================================================================
   Auth pages (sign in)
   ========================================================================== */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: radial-gradient(ellipse at top, rgba(240,176,76,0.08), transparent 60%), var(--color-bg);
}
.auth-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow-card);
}
.auth-title { font-size: 1.6rem; margin-bottom: 6px; }
.auth-sub { color: var(--color-text-muted); margin: 0 0 22px; font-size: 0.95rem; }

/* ==========================================================================
   Forms
   ========================================================================== */
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 8px; color: var(--color-text); text-transform: uppercase; letter-spacing: 0.06em; }
.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  padding: 12px 14px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font: inherit;
  transition: border-color var(--transition);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(240, 176, 76, 0.12);
}
.form-field textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-help { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 6px; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 999px;
  font: 600 0.82rem/1 var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--gradient-accent); color: #1a1a1a; border-color: transparent; box-shadow: 0 6px 18px -6px rgba(240, 176, 76, 0.5); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 24px -6px rgba(240, 176, 76, 0.55); color: #1a1a1a; }
.btn-secondary { background: transparent; color: var(--color-text); border-color: var(--color-border-bright); }
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-danger { background: transparent; color: var(--color-danger); border-color: var(--color-danger); }
.btn-danger:hover { background: rgba(232, 105, 112, 0.1); }
.btn-block { display: flex; width: 100%; }
.btn-sm { padding: 6px 14px; font-size: 0.74rem; }

.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 0.9rem; }
.alert-error { background: rgba(232,105,112,0.1); border: 1px solid var(--color-danger); color: var(--color-danger); }
.flash { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 0.85rem; margin-left: 16px; }
.flash-success { background: rgba(70,194,143,0.12); border: 1px solid var(--color-success); color: var(--color-success); }
.flash-error { background: rgba(232,105,112,0.1); border: 1px solid var(--color-danger); color: var(--color-danger); }

/* ==========================================================================
   App shell (sidebar + main)
   ========================================================================== */
.admin-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}
.admin-sidebar {
  background: var(--color-bg-2);
  border-right: 1px solid var(--color-border);
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.admin-sidebar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 22px 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
}
.admin-sidebar__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-accent);
  color: #1a1a1a;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
}
.admin-sidebar__name { font-family: var(--font-display); font-weight: 800; color: var(--color-text); font-size: 1.1rem; }

.admin-nav { display: flex; flex-direction: column; gap: 2px; padding: 0 12px; flex: 1; }
.admin-nav a {
  display: block;
  padding: 11px 14px;
  color: var(--color-text-soft);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.admin-nav a:hover { background: var(--color-bg-card); color: var(--color-text); }
.admin-nav a.is-active { background: var(--color-bg-card); color: var(--color-accent); border-left: 3px solid var(--color-accent); padding-left: 11px; }

.admin-sidebar__foot {
  padding: 16px 22px;
  border-top: 1px solid var(--color-border);
  margin-top: 16px;
}
.admin-sidebar__user { font-size: 0.78rem; color: var(--color-text-muted); margin-bottom: 6px; word-break: break-all; }
.admin-sidebar__logout { font-size: 0.82rem; color: var(--color-danger); }

.admin-main { display: flex; flex-direction: column; min-width: 0; }
.admin-topbar {
  display: flex;
  align-items: center;
  padding: 22px 36px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.admin-topbar__title { font-size: 1.5rem; margin: 0; flex: 1; }
.admin-body { padding: 30px 36px 60px; }

/* ==========================================================================
   Stats
   ========================================================================== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 30px;
}
.stat {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color var(--transition);
}
.stat:hover { border-color: var(--color-border-bright); }
.stat__label { color: var(--color-text-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.stat__value { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: var(--color-text); line-height: 1; }
.stat__sub { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 6px; }

/* ==========================================================================
   Cards & panels
   ========================================================================== */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  margin-bottom: 22px;
}
.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}
.card__title { font-size: 1.05rem; margin: 0; }

/* ==========================================================================
   Tables
   ========================================================================== */
.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.tbl th {
  text-align: left;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-weight: 600;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
}
.tbl td {
  padding: 14px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-soft);
  vertical-align: middle;
}
.tbl tbody tr:hover { background: rgba(255, 255, 255, 0.02); }
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl a { color: var(--color-text); font-weight: 500; }
.tbl a:hover { color: var(--color-primary); }
.tbl .num { font-variant-numeric: tabular-nums; color: var(--color-text-muted); }
.tbl-empty { text-align: center; padding: 50px 20px; color: var(--color-text-muted); }

/* ==========================================================================
   Pills / badges
   ========================================================================== */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid;
}
.pill-success { background: rgba(70,194,143,0.1); border-color: var(--color-success); color: var(--color-success); }
.pill-info    { background: rgba(110,193,228,0.1); border-color: var(--color-info); color: var(--color-info); }
.pill-warning { background: rgba(240,176,76,0.1); border-color: var(--color-warning); color: var(--color-warning); }
.pill-danger  { background: rgba(232,105,112,0.1); border-color: var(--color-danger); color: var(--color-danger); }
.pill-muted   { background: rgba(125,138,160,0.1); border-color: var(--color-text-muted); color: var(--color-text-muted); }

/* ==========================================================================
   Filter bar
   ========================================================================== */
.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 22px;
  flex-wrap: wrap;
  align-items: center;
}
.filter-bar form { display: flex; gap: 12px; flex: 1; }
.filter-bar input[type="text"], .filter-bar input[type="search"], .filter-bar select {
  padding: 9px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font: inherit;
  font-size: 0.85rem;
}
.filter-bar input:focus, .filter-bar select:focus { outline: none; border-color: var(--color-accent); }
.filter-bar input[type="search"] { min-width: 280px; }

/* ==========================================================================
   Pagination
   ========================================================================== */
.pager { display: flex; gap: 6px; margin-top: 22px; justify-content: center; }
.pager a, .pager span {
  padding: 7px 13px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-soft);
  font-size: 0.82rem;
}
.pager a:hover { border-color: var(--color-primary); color: var(--color-text); }
.pager span.is-current { background: var(--gradient-accent); color: #1a1a1a; border-color: transparent; font-weight: 700; }

/* ==========================================================================
   Chat
   ========================================================================== */
.chat-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 70vh;
}
.chat-threads {
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  max-height: 80vh;
}
.chat-thread-item {
  display: block;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-soft);
  transition: background var(--transition);
}
.chat-thread-item:hover { background: rgba(255,255,255,0.03); color: var(--color-text); }
.chat-thread-item.is-active { background: rgba(240,176,76,0.06); border-left: 3px solid var(--color-accent); padding-left: 17px; }
.chat-thread-item__email { font-weight: 600; color: var(--color-text); margin-bottom: 4px; }
.chat-thread-item__preview { font-size: 0.82rem; color: var(--color-text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-thread-item__meta { display: flex; justify-content: space-between; margin-top: 6px; font-size: 0.72rem; color: var(--color-text-muted); }
.chat-thread-item__unread {
  background: var(--color-accent);
  color: #1a1a1a;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 700;
}

.chat-pane { display: flex; flex-direction: column; max-height: 80vh; }
.chat-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-header__user { font-weight: 600; color: var(--color-text); }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.chat-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}
.msg {
  max-width: 70%;
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.5;
  word-wrap: break-word;
}
.msg__time { display: block; font-size: 0.7rem; color: var(--color-text-muted); margin-top: 4px; }
.msg-client { background: var(--color-bg-elevated); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg-admin  { background: var(--gradient-accent); color: #1a1a1a; align-self: flex-end; border-bottom-right-radius: 4px; }
.msg-admin .msg__time { color: rgba(0,0,0,0.5); }
.msg-system { background: transparent; align-self: center; max-width: 90%; text-align: center; color: var(--color-text-muted); font-size: 0.78rem; font-style: italic; }

.chat-reply {
  padding: 16px 20px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-2);
}
.chat-reply form { display: flex; gap: 12px; align-items: flex-end; }
.chat-reply textarea {
  flex: 1;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  padding: 10px 14px;
  font: inherit;
  resize: vertical;
  min-height: 44px;
  max-height: 120px;
}
.chat-reply textarea:focus { outline: none; border-color: var(--color-accent); }

.chat-reply form { flex-wrap: wrap; }
.chat-reply__attach {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: transparent;
  border: 1px dashed var(--color-border-bright);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  font-size: 0.82rem;
}
.chat-reply__attach:hover { color: var(--color-primary); border-color: var(--color-primary); }
.chat-reply__filename { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.msg__img {
  display: block;
  max-width: 100%;
  max-height: 280px;
  border-radius: 10px;
  margin-bottom: 6px;
  cursor: zoom-in;
  transition: transform 150ms ease;
}
.msg__img:hover { transform: scale(1.01); }

/* Lightbox overlay */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 12, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  cursor: zoom-out;
  padding: 30px;
  animation: lightboxFade 200ms ease;
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: 95vw;
  max-height: 95vh;
  border-radius: 10px;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.8);
}
@keyframes lightboxFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ==========================================================================
   Misc
   ========================================================================== */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.kv-list { display: grid; grid-template-columns: max-content 1fr; gap: 10px 22px; }
.kv-list dt { color: var(--color-text-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.kv-list dd { margin: 0; color: var(--color-text); font-size: 0.92rem; word-break: break-all; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }
.section-title { font-size: 1rem; margin: 26px 0 14px; color: var(--color-text); }

@media (max-width: 900px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; padding: 14px; }
  .admin-sidebar__brand { padding: 0; border-bottom: none; margin-bottom: 0; flex: 1; }
  .admin-nav { flex-direction: row; flex-wrap: wrap; padding: 14px 0 0; gap: 6px; flex-basis: 100%; }
  .admin-nav a.is-active { border-left: none; padding-left: 14px; border-bottom: 2px solid var(--color-accent); }
  .admin-sidebar__foot { padding: 0; border-top: none; }
  .admin-body { padding: 20px; }
  .admin-topbar { padding: 16px 20px; }
  .chat-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
}

/* ───── Modal dialog (shared across admin pages) ───── */
.modal { display:none; position:fixed; inset:0; background:rgba(5,7,12,0.82); z-index:1000; align-items:flex-start; justify-content:center; padding:40px 16px; overflow-y:auto; }
.modal.is-open { display:flex; }
.modal__box { background:var(--color-bg-card); border:1px solid var(--color-border); border-radius:var(--radius-lg); max-width:720px; width:100%; padding:26px 28px; position:relative; }
.modal__head { display:flex; justify-content:space-between; align-items:center; margin:0 0 18px; padding-bottom:14px; border-bottom:1px solid var(--color-border); }
.modal__head h2 { margin:0; font-size:1.15rem; }
.modal__close { background:transparent; border:0; color:var(--color-text-muted); font-size:1.5rem; cursor:pointer; padding:0 6px; line-height:1; text-decoration:none; }
.modal__close:hover { color:var(--color-text); }