:root {
  --bg: #080a10;
  --bg-2: #0e1119;
  --glass: rgba(18, 22, 34, 0.72);
  --glass-border: rgba(255, 255, 255, 0.07);
  --card: rgba(22, 27, 40, 0.85);
  --text: #eef1f8;
  --muted: #7d879c;
  --accent: #6d9eff;
  --accent-2: #8b6dff;
  --accent-glow: rgba(109, 158, 255, 0.35);
  --success: #34d399;
  --warn: #fbbf24;
  --danger: #f87171;
  --radius: 16px;
  --radius-sm: 10px;
  font-family: "DM Sans", system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; color: var(--text); background: var(--bg); }
body { line-height: 1.5; -webkit-font-smoothing: antialiased; }

.app-bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 15% -10%, rgba(109, 158, 255, 0.14), transparent 55%),
    radial-gradient(ellipse 50% 40% at 90% 10%, rgba(139, 109, 255, 0.1), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(52, 211, 153, 0.05), transparent 50%),
    var(--bg);
}

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.glass-inset {
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
}

.app-shell { max-width: 1320px; margin: 0 auto; padding: 16px 16px 56px; }

/* ——— Topbar ——— */
.topbar {
  border-radius: calc(var(--radius) + 4px);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.topbar-main {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 14px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 42px; height: 42px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 12px; color: #fff;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.brand strong { display: block; font-size: 1.05rem; letter-spacing: -0.02em; }
.brand small { color: var(--muted); font-size: 0.78rem; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 8px;
}
.stat-card {
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
}
.stat-value { display: block; font-size: 1.35rem; font-weight: 700; line-height: 1.2; letter-spacing: -0.03em; }
.stat-label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-online .stat-value { color: var(--success); }
.stat-frozen .stat-value { color: var(--warn); }
.stat-warn .stat-value { color: var(--warn); }
.stat-dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; margin-bottom: 4px; }
.stat-dot.is-up { background: var(--success); box-shadow: 0 0 10px var(--success); }
.stat-dot.is-down { background: var(--danger); }

/* ——— Toolbar ——— */
.toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: var(--radius); margin-bottom: 16px;
}
.search-wrap { flex: 1; min-width: 200px; position: relative; }
.search-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--muted); pointer-events: none;
}
.search-input {
  width: 100%; padding: 10px 12px 10px 40px;
  background: rgba(0, 0, 0, 0.25); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text); font: inherit; font-size: 0.9rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.search-input:focus {
  outline: none; border-color: rgba(109, 158, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(109, 158, 255, 0.15);
}
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  padding: 7px 14px; border-radius: 999px; font: inherit; font-size: 0.8rem; font-weight: 500;
  background: transparent; border: 1px solid var(--glass-border); color: var(--muted);
  cursor: pointer; transition: all 0.15s;
}
.chip:hover { color: var(--text); border-color: rgba(255,255,255,0.15); }
.chip.is-active {
  background: rgba(109, 158, 255, 0.15); border-color: rgba(109, 158, 255, 0.4); color: var(--accent);
}

/* ——— Cards ——— */
.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}
.client-card {
  border-radius: var(--radius);
  padding: 16px;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.client-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  border-color: rgba(109, 158, 255, 0.25);
}
.client-card.is-online { border-left: 3px solid var(--success); }
.client-card.is-frozen { border-left: 3px solid var(--warn); opacity: 0.88; }
.client-card.is-expiring { box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.2); }
.client-card.is-hidden { display: none; }
.client-card.is-dragging { opacity: 0.45; transform: scale(0.98); }

.card-top {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 10px;
  margin-bottom: 14px;
}
.card-identity { display: flex; align-items: center; gap: 10px; min-width: 0; }
.card-identity h2 { margin: 0; font-size: 1rem; font-weight: 600; word-break: break-all; letter-spacing: -0.02em; }
.status-ring {
  width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;
  background: var(--muted); opacity: 0.6;
}
.is-online .status-ring {
  background: var(--success); opacity: 1;
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.25);
}
.is-frozen .status-ring { background: var(--warn); opacity: 1; }

.badge {
  font-size: 0.68rem; font-weight: 500; padding: 4px 8px; border-radius: 6px;
  background: rgba(0,0,0,0.3); color: var(--muted); white-space: nowrap; max-width: 55%;
  overflow: hidden; text-overflow: ellipsis;
}
.badge-warn { color: var(--warn); background: rgba(251, 191, 36, 0.12); }
.badge-alert { color: #fcd34d; background: rgba(251, 191, 36, 0.18); }

.card-metrics {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px;
}
.metric-label { display: block; font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 2px; }
.metric-value { font-size: 0.85rem; font-weight: 600; }
.metric-small { font-size: 0.78rem; font-weight: 500; color: var(--muted); }

.spark-wrap { position: relative; margin-bottom: 14px; }
.traffic-spark {
  width: 100%; height: 52px; display: block;
  background: rgba(0, 0, 0, 0.25); border-radius: var(--radius-sm);
}
.spark-legend {
  position: absolute; top: 6px; right: 8px;
  display: flex; gap: 8px; font-size: 0.65rem; font-weight: 600;
}
.legend-rx { color: var(--accent); }
.legend-tx { color: var(--success); }

.card-actions {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
}
.card-delete-form { margin-left: auto; }
.action-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 10px; border-radius: 8px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--glass-border);
  color: var(--text); font: inherit; font-size: 0.75rem; font-weight: 500;
  cursor: pointer; text-decoration: none; transition: background 0.15s, border-color 0.15s;
}
.action-btn:hover { background: rgba(109, 158, 255, 0.12); border-color: rgba(109, 158, 255, 0.3); }
.action-btn span { display: none; }
@media (min-width: 400px) { .action-btn span { display: inline; } }
.action-warn:hover { background: rgba(251, 191, 36, 0.12); border-color: rgba(251, 191, 36, 0.35); color: var(--warn); }
.action-danger { padding: 7px 9px; }
.action-danger:hover { background: rgba(248, 113, 113, 0.12); border-color: rgba(248, 113, 113, 0.35); color: var(--danger); }

/* ——— Buttons ——— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--radius-sm);
  font: inherit; font-size: 0.88rem; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
  transition: transform 0.12s, box-shadow 0.15s, background 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-accent:hover { filter: brightness(1.08); box-shadow: 0 6px 28px var(--accent-glow); }
.btn-ghost { background: transparent; border-color: var(--glass-border); color: var(--muted); }
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.btn-block { width: 100%; }
.btn-icon-only {
  width: 42px; height: 42px; padding: 0;
  background: rgba(255,255,255,0.04); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--muted); cursor: pointer;
  display: grid; place-items: center; transition: color 0.15s, background 0.15s;
}
.btn-icon-only:hover { color: var(--text); background: rgba(255,255,255,0.08); }
.inline-form { display: inline; margin: 0; }

/* ——— Toasts ——— */
.toast-stack {
  position: fixed; top: 16px; right: 16px; z-index: 100;
  display: flex; flex-direction: column; gap: 8px; max-width: min(400px, calc(100vw - 32px));
}
.toast {
  padding: 12px 16px; border-radius: var(--radius-sm); font-size: 0.88rem;
  backdrop-filter: blur(12px); animation: slideIn 0.3s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
@keyframes slideIn { from { opacity: 0; transform: translateX(16px); } to { opacity: 1; transform: none; } }
.toast-success { background: rgba(52, 211, 153, 0.15); border: 1px solid rgba(52, 211, 153, 0.35); color: #a7f3d0; }
.toast-error { background: rgba(248, 113, 113, 0.15); border: 1px solid rgba(248, 113, 113, 0.35); color: #fecaca; }

.empty-state {
  grid-column: 1 / -1; text-align: center; padding: 56px 24px; border-radius: var(--radius);
}
.empty-icon { font-size: 2.5rem; color: var(--accent); opacity: 0.5; margin-bottom: 12px; }
.empty-state h2 { margin: 0 0 8px; font-size: 1.2rem; }
.empty-state p { margin: 0 0 20px; color: var(--muted); font-size: 0.9rem; }

/* ——— Modals ——— */
.modal {
  border: none; padding: 0; background: transparent;
  max-width: calc(100vw - 24px); max-height: calc(100vh - 24px);
}
.modal::backdrop {
  background: rgba(4, 6, 12, 0.75);
  backdrop-filter: blur(6px);
}
.modal-panel {
  width: min(440px, 100%);
  background: var(--card);
  border: 1px solid var(--glass-border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}
.modal-hero {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 20px 20px 0; position: relative;
}
.modal-hero-sm { padding-bottom: 4px; }
.modal-hero-icon {
  width: 48px; height: 48px; flex-shrink: 0;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(109,158,255,0.2), rgba(139,109,255,0.2));
  border: 1px solid rgba(109, 158, 255, 0.25);
  border-radius: 14px; color: var(--accent);
}
.modal-hero h3 { margin: 0; font-size: 1.15rem; letter-spacing: -0.02em; }
.modal-sub { margin: 4px 0 0; font-size: 0.82rem; color: var(--muted); }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px; border: none; border-radius: 8px;
  background: rgba(255,255,255,0.06); color: var(--muted);
  font-size: 1.25rem; line-height: 1; cursor: pointer;
}
.modal-close:hover { background: rgba(255,255,255,0.1); color: var(--text); }
.modal-content { padding: 18px 20px; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 14px 20px 20px; border-top: 1px solid var(--glass-border);
  background: rgba(0,0,0,0.15);
}

.form-group { margin-bottom: 18px; }
.form-label {
  display: block; margin-bottom: 8px;
  font-size: 0.78rem; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.form-input {
  width: 100%; padding: 11px 14px;
  background: rgba(0,0,0,0.3); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text); font: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-input-lg { font-size: 1.05rem; font-weight: 500; padding: 13px 14px; }
.form-input:focus {
  outline: none; border-color: rgba(109, 158, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(109, 158, 255, 0.12);
}
.form-input.is-invalid { border-color: rgba(248, 113, 113, 0.6); }
.form-input.is-valid { border-color: rgba(52, 211, 153, 0.5); }
.form-hint { margin: 6px 0 0; font-size: 0.75rem; color: var(--muted); }
.form-hint.is-error { color: var(--danger); }
.form-hint.is-ok { color: var(--success); }

.duration-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px;
}
.duration-opt {
  padding: 12px 10px; border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.25); border: 1px solid var(--glass-border);
  color: var(--text); font: inherit; font-size: 0.85rem; font-weight: 500;
  cursor: pointer; text-align: center; transition: all 0.15s;
}
.duration-opt:hover { border-color: rgba(109, 158, 255, 0.35); background: rgba(109, 158, 255, 0.08); }
.duration-opt.is-selected {
  background: rgba(109, 158, 255, 0.18); border-color: var(--accent);
  color: var(--accent); box-shadow: 0 0 0 1px rgba(109, 158, 255, 0.25);
}

.create-preview {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px;
  padding: 12px 14px; margin-top: 4px;
}
.preview-label { font-size: 0.75rem; color: var(--muted); width: 100%; }
.create-preview strong { font-size: 1rem; color: var(--accent); }
.create-preview span:last-child {
  font-size: 0.8rem; color: var(--muted);
  padding: 2px 8px; background: rgba(255,255,255,0.05); border-radius: 6px;
}

.modal-panel-qr { text-align: center; }
.qr-frame {
  padding: 16px 20px;
  display: flex; justify-content: center;
}
.qr-frame img {
  border-radius: 12px; background: #fff; padding: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.modal-panel-qr .btn-block { margin: 0 20px 20px; }

/* ——— Auth ——— */
.auth-page {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
}
.auth-card {
  width: min(400px, 100%); padding: 36px 32px;
  background: var(--card); border: 1px solid var(--glass-border);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
}
.auth-brand { text-align: center; margin-bottom: 28px; }
.brand-mark {
  width: 56px; height: 56px; margin: 0 auto 14px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 16px; font-weight: 700; font-size: 14px; color: #fff;
  box-shadow: 0 8px 28px var(--accent-glow);
}
.auth-brand h1 { margin: 0; font-size: 1.5rem; letter-spacing: -0.03em; }
.auth-brand p { margin: 6px 0 0; color: var(--muted); font-size: 0.88rem; }
.field { display: block; margin-bottom: 18px; }
.field span { display: block; margin-bottom: 8px; font-size: 0.78rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.alert-error {
  padding: 12px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 0.88rem;
  background: rgba(248, 113, 113, 0.12); border: 1px solid rgba(248, 113, 113, 0.3); color: #fecaca;
}

@media (max-width: 640px) {
  .topbar-main { flex-wrap: wrap; }
  .btn-accent span { display: none; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .duration-grid { grid-template-columns: 1fr 1fr; }
}