/* ═══════════════════════════════════════════════════════════
   NEXUS Control Panel — app.css
   Dark theme inspired by the attached UI mockup
   ═══════════════════════════════════════════════════════════ */

/* ── Variables ─────────────────────────────────────────── */
:root {
  --bg:          #0e0f14;
  --surface:     #14161d;
  --surface-2:   #1b1e28;
  --surface-3:   #222637;
  --border:      rgba(255,255,255,.06);
  --border-act:  rgba(99,120,255,.4);

  --accent:      #5b72ff;
  --accent-2:    #7b90ff;
  --accent-glow: rgba(91,114,255,.25);

  --text:        #e4e6f0;
  --text-muted:  #6b7280;
  --text-dim:    #9ca3af;

  --danger:      #ff4d6a;
  --success:     #3ecf8e;
  --warning:     #f59e0b;

  --radius:      10px;
  --radius-sm:   6px;
  --sidebar-w:   220px;
  --transition:  .15s ease;
}

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Syne', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Shell / Layout ─────────────────────────────────────── */
.shell {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 14px;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--accent-2);
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}
.nav-item svg { width: 17px; height: 17px; fill: currentColor; flex-shrink: 0; }
.nav-item:hover { background: var(--surface-2); color: var(--text-dim); }
.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent-2);
  border: 1px solid var(--border-act);
}

.nav-divider {
  height: 1px;
  background: var(--border);
  margin: 10px 0;
}

.sidebar-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.user-chip { display: flex; align-items: center; gap: 9px; flex: 1; min-width: 0; }
.chip-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.chip-placeholder {
  background: var(--accent-glow);
  border: 1px solid var(--border-act);
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700; color: var(--accent-2);
}
.chip-info { display: flex; flex-direction: column; min-width: 0; }
.chip-name { font-size: .8rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chip-role { font-size: .7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }

.btn-logout {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: background var(--transition), color var(--transition);
  flex-shrink: 0;
}
.btn-logout svg { width: 16px; height: 16px; fill: currentColor; }
.btn-logout:hover { background: rgba(255,77,106,.12); color: var(--danger); }

/* ── Main content ───────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 36px 40px;
  max-width: calc(100vw - var(--sidebar-w));
}

/* ── Page header ────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}
.page-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: .03em;
}
.page-subtitle {
  font-size: .82rem;
  color: var(--text-muted);
  margin-top: 3px;
  font-weight: 400;
}

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

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-title {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Grid ───────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }

/* ── Stat chips ─────────────────────────────────────────── */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text);
  font-family: 'DM Mono', monospace;
}
.stat-accent { color: var(--accent-2); }
.stat-danger  { color: var(--danger); }
.stat-success { color: var(--success); }

/* ── Forms ──────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 7px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text);
  font-size: .88rem;
  transition: border var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%236b7280'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; background-size: 18px; padding-right: 36px; }
.form-textarea { min-height: 90px; resize: vertical; }
.form-hint { font-size: .75rem; color: var(--text-muted); margin-top: 5px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .03em;
  border: none;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.btn:active { transform: scale(.98); }
.btn svg { width: 15px; height: 15px; fill: currentColor; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-primary:hover { opacity: .88; box-shadow: 0 6px 22px var(--accent-glow); }

.btn-secondary {
  background: var(--surface-3);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--surface-2); color: var(--text); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: .85; }

.btn-success { background: var(--success); color: #0e0f14; }
.btn-success:hover { opacity: .85; }

.btn-sm { padding: 6px 14px; font-size: .78rem; }
.btn-full { width: 100%; }

/* ── Toggle ─────────────────────────────────────────────── */
.toggle-wrap { display: flex; align-items: center; justify-content: space-between; }
.toggle-label { font-size: .88rem; font-weight: 600; }
.toggle {
  position: relative;
  width: 42px; height: 24px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-track {
  position: absolute; inset: 0;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: 99px;
  cursor: pointer;
  transition: background .2s;
}
.toggle-track::after {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform .2s, background .2s;
}
.toggle input:checked + .toggle-track { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .toggle-track::after { transform: translateX(18px); background: #fff; }

/* ── Table ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .84rem;
}
thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(255,255,255,.02); }

/* ── Badges ─────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.badge-blue    { background: rgba(91,114,255,.15); color: var(--accent-2); border: 1px solid rgba(91,114,255,.25); }
.badge-green   { background: rgba(62,207,142,.12); color: var(--success);  border: 1px solid rgba(62,207,142,.2); }
.badge-red     { background: rgba(255,77,106,.12);  color: var(--danger);   border: 1px solid rgba(255,77,106,.2); }
.badge-yellow  { background: rgba(245,158,11,.12);  color: var(--warning);  border: 1px solid rgba(245,158,11,.2); }
.badge-gray    { background: var(--surface-2); color: var(--text-muted);   border: 1px solid var(--border); }

/* ── Flash ──────────────────────────────────────────────── */
.flash {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border-left: 3px solid;
}
.flash-error   { background: rgba(255,77,106,.08);   border-color: var(--danger);  color: var(--danger); }
.flash-success { background: rgba(62,207,142,.08);   border-color: var(--success); color: var(--success); }
.flash-info    { background: rgba(91,114,255,.08);   border-color: var(--accent);  color: var(--accent-2); }

/* ── Auth page ──────────────────────────────────────────── */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 24px;
}
.auth-box {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px 32px;
}
.auth-logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--accent-2);
  text-align: center;
  margin-bottom: 4px;
}
.auth-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: .82rem;
  margin-bottom: 28px;
}
.auth-tabs {
  display: flex;
  gap: 0;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}
.auth-tab {
  flex: 1;
  padding: 8px;
  text-align: center;
  border-radius: calc(var(--radius-sm) - 2px);
  font-size: .82rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.auth-tab.active {
  background: var(--accent);
  color: #fff;
}

/* ── Avatar uploader ────────────────────────────────────── */
.avatar-zone {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}
.avatar-preview {
  width: 72px; height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-act);
  flex-shrink: 0;
}
.avatar-preview-ph {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 2px solid var(--border-act);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800; color: var(--accent-2);
  flex-shrink: 0;
}

/* ── Sub status ─────────────────────────────────────────── */
.sub-bar {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.sub-info { display: flex; flex-direction: column; gap: 3px; }
.sub-expiry { font-size: .8rem; color: var(--text-muted); }
.sub-days { font-family: 'DM Mono', monospace; font-size: 1.1rem; font-weight: 700; color: var(--success); }
.sub-expired { color: var(--danger); }

/* ── Code block (key display) ───────────────────────────── */
.key-display {
  font-family: 'DM Mono', monospace;
  font-size: .88rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--accent-2);
  letter-spacing: .08em;
  word-break: break-all;
}

/* ── Mono text ──────────────────────────────────────────── */
.mono { font-family: 'DM Mono', monospace; font-size: .82rem; color: var(--text-dim); }

/* ── Divider ────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

/* ── Utility ────────────────────────────────────────────── */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: .82rem; }
.text-xs { font-size: .74rem; }
.fw-700 { font-weight: 700; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 20px 16px; max-width: 100vw; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}