:root {
  --bg: #121212;
  --bg-elev: #1a1a1a;
  --bg-hover: #252525;
  --border: #333;
  --text: #f2f2f2;
  --muted: #9a9a9a;
  --accent: #2f80ed;
  --accent-hover: #4a96f5;
  --danger: #d64545;
  --danger-hover: #e35a5a;
  --warn: #f1c40f;
  --ok: #2ecc71;
  --sbx-green: #28a745;
  --sbx-red: #c0392b;
  --sbx-blue: #2f80ed;
  --sbx-ver: #f39c12;
  --input: #0e0e0e;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  --radius: 8px;
  --font: "Segoe UI", "IBM Plex Sans", "Source Sans 3", system-ui, sans-serif;
  --mono: "Cascadia Code", "Consolas", "IBM Plex Mono", monospace;
}

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

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
}

a {
  color: var(--accent-hover);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

.sbx-logo {
  color: var(--sbx-blue);
  font-weight: 700;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.topbar .nav {
  flex: 1 1 auto;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.15rem;
}

.brand span {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.9rem;
  margin-left: 0.4rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.nav a:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.nav a.active {
  color: var(--text);
  background: var(--bg-elev);
  border-color: var(--border);
}

.userchip {
  color: var(--muted);
  font-size: 0.9rem;
}

h1 {
  font-size: 1.45rem;
  margin: 0 0 0.35rem;
  font-weight: 650;
}

.lead {
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.stat .label {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat .value {
  font-size: 1.55rem;
  font-weight: 700;
  margin-top: 0.25rem;
}

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}

.panel h2 {
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
}

.flash {
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.flash.ok {
  background: rgba(61, 154, 122, 0.15);
  border-color: rgba(61, 154, 122, 0.45);
}

.flash.err {
  background: rgba(196, 92, 92, 0.15);
  border-color: rgba(196, 92, 92, 0.45);
}

.flash.warn {
  background: rgba(201, 162, 39, 0.12);
  border-color: rgba(201, 162, 39, 0.4);
}

label {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

input[type="text"],
input[type="password"],
input[type="number"],
textarea,
select {
  width: 100%;
  background: var(--input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  font: inherit;
  margin-bottom: 0.85rem;
}

textarea {
  min-height: 120px;
  font-family: var(--mono);
  font-size: 0.88rem;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid rgba(47, 128, 237, 0.45);
  border-color: var(--accent);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 700px) {
  .row {
    grid-template-columns: 1fr;
  }
}

.checks {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.25rem 0 1rem;
  color: var(--text);
}

.checks input {
  width: auto;
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border: 0;
  border-radius: 6px;
  padding: 0.55rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

.btn:hover {
  background: var(--accent-hover);
  text-decoration: none;
}

.btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn.secondary:hover {
  background: var(--bg-hover);
}

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

.btn.danger:hover {
  background: var(--danger-hover);
}

.btn.block {
  width: 100%;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td.mono,
.mono {
  font-family: var(--mono);
  font-size: 0.82rem;
  word-break: break-all;
}

.badge {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-hover);
  color: var(--muted);
}

.badge.ok {
  background: rgba(46, 204, 113, 0.18);
  color: #7ddea8;
}

.badge.bad {
  background: rgba(196, 92, 92, 0.2);
  color: #f0a0a0;
}

.payload {
  max-width: 360px;
  max-height: 4.5em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: #c5d0db;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-card {
  width: min(100%, 400px);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem 1.4rem 1.35rem;
  box-shadow: var(--shadow);
}

.login-card .brand {
  margin-bottom: 0.25rem;
}

.login-card p {
  color: var(--muted);
  margin: 0 0 1.2rem;
  font-size: 0.92rem;
}

.muted {
  color: var(--muted);
}

.footer-note {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.empty {
  color: var(--muted);
  padding: 0.5rem 0;
}

.token-once {
  background: var(--input);
  border: 1px dashed var(--warn);
  border-radius: 8px;
  padding: 0.75rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  word-break: break-all;
  margin: 0.5rem 0 1rem;
}

.table-scroll {
  overflow-x: auto;
}

.device-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1.1rem;
}

.device-head-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  padding-top: 1.4rem;
}

.device-split {
  align-items: start;
}

.device-split > .panel {
  margin-bottom: 1.25rem;
}

.kv {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 0.45rem 0.85rem;
  margin: 0;
}

.kv dt {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.kv dd {
  margin: 0;
}

.subhead {
  margin: 1rem 0 0.55rem;
  font-size: 0.92rem;
  font-weight: 650;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cmd-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 0.45rem;
  margin-bottom: 0.25rem;
}

.cmd-grid .btn {
  width: 100%;
  padding: 0.65rem 0.4rem;
}

.status-json {
  margin: 0.75rem 0 0;
  padding: 0.75rem 0.85rem;
  background: var(--input);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 280px;
  overflow: auto;
  color: #c5d0db;
}

.slot-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.5rem 0 0.25rem;
}

.slot-chip {
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-hover);
  color: var(--muted);
}

.slot-chip.free {
  background: rgba(46, 204, 113, 0.15);
  border-color: rgba(46, 204, 113, 0.4);
  color: #7ddea8;
}

.slot-chip.busy {
  background: rgba(192, 57, 43, 0.18);
  border-color: rgba(192, 57, 43, 0.45);
  color: #f0a0a0;
}

/* SerwisBOX control panel (matches device LCD / desktop UI) */
.sbx {
  background: #151515;
  border: 1px solid #2a2a2a;
  border-radius: 10px;
  padding: 1rem 1.1rem 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}

.sbx.is-offline {
  opacity: 0.92;
  filter: saturate(0.9);
}

.sbx-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.6rem 1.25rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #2a2a2a;
}

.sbx-title {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.sbx-colon {
  color: var(--text);
  margin: 0 0.15rem;
}

.sbx-name {
  color: #fff;
  font-weight: 700;
}

.sbx-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.35rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.sbx-meta strong {
  color: #fff;
  font-weight: 650;
}

.sbx-ver {
  color: var(--sbx-ver) !important;
}

.sbx-status-warn {
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
}

.sbx-grid {
  display: grid !important;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  width: 100%;
}

.sbx-card-form {
  margin: 0;
  min-width: 0;
  display: block;
  width: 100%;
}

.sbx-card {
  -webkit-appearance: none !important;
  appearance: none !important;
  width: 100%;
  min-height: 168px;
  display: flex !important;
  flex-direction: column !important;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  padding: 0.95rem 0.7rem 0.85rem;
  border: 0 !important;
  border-radius: 4px;
  color: #fff !important;
  cursor: pointer;
  font: inherit;
  text-align: center;
  line-height: 1.25;
  background: #3a3a3a;
  transition: transform 0.12s ease, filter 0.12s ease, box-shadow 0.12s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 3px 10px rgba(0, 0, 0, 0.35);
}

.sbx-card > span {
  display: block;
  width: 100%;
}

.sbx-card:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
  text-decoration: none;
}

.sbx-card:active {
  transform: translateY(1px);
}

.sbx-card:focus-visible {
  outline: 2px solid rgba(47, 128, 237, 0.7);
  outline-offset: 2px;
}

.sbx-card.free {
  background: var(--sbx-green) !important;
  background-image: linear-gradient(180deg, #33c054 0%, #23963b 100%) !important;
}

.sbx-card.busy {
  background: var(--sbx-red) !important;
  background-image: linear-gradient(180deg, #e74c3c 0%, #a93226 100%) !important;
}

.sbx-card.error {
  background: #6c3483 !important;
  background-image: linear-gradient(180deg, #8e44ad 0%, #6c3483 100%) !important;
}

.sbx-card.unknown {
  background: #4a4a4a !important;
  background-image: linear-gradient(180deg, #5a5a5a 0%, #3a3a3a 100%) !important;
}

.sbx-card-num {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.sbx-card-state {
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin: 0.2rem 0 0.1rem;
}

.sbx-card-door {
  font-size: 0.88rem;
  font-weight: 600;
  opacity: 0.95;
}

.sbx-card-sep {
  display: block;
  width: 72%;
  height: 1px;
  margin: 0.4rem 0 0.25rem;
  background: rgba(255, 255, 255, 0.55);
}

.sbx-card-gsm-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  opacity: 0.95;
}

.sbx-card-gsm {
  font-size: 1.05rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.03em;
}

.sbx-ack {
  margin: 0.85rem 0 0;
  font-size: 0.85rem;
}

.sbx-pin-panel {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid #2a2a2a;
}

.sbx-pin-panel h2 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  color: #fff;
}

.sbx-hint {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.sbx-pin-table {
  width: 100%;
}

.sbx-pin-table th {
  white-space: nowrap;
}

.sbx-pin-table td {
  vertical-align: middle;
}

.sbx-slot-name {
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}

.sbx-input {
  width: 100%;
  min-width: 0;
  margin: 0 !important;
  background: #0a0a0a;
  border: 1px solid #3a3a3a;
  border-radius: 4px;
  color: #fff;
  padding: 0.4rem 0.5rem;
  font: inherit;
}

.sbx-input.pin-input {
  width: 4.5rem;
  text-align: center;
  font-family: var(--mono);
  letter-spacing: 0.12em;
  font-weight: 700;
}

.sbx-input.gsm-input {
  min-width: 8.5rem;
  font-family: var(--mono);
}

.sbx-inline-form {
  margin: 0;
  display: inline;
}

.sbx-btn-gen {
  background: #4a4a4a;
  color: #fff;
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
}

.sbx-btn-gen:hover {
  background: #5a5a5a;
}

.sbx-btn-save {
  background: var(--sbx-blue);
  color: #fff;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
}

.sbx-btn-sms {
  background: #1f3a5f;
  color: #fff;
  border: 1px solid #2f80ed;
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
}

.sbx-btn-sms:hover {
  background: #274a75;
}

.sbx-sms-status {
  font-weight: 650;
  white-space: nowrap;
}

.sbx-sms-status.sms-ok {
  color: #2ecc71;
}

.sbx-sms-status.sms-info {
  color: #f1c40f;
}

.sbx-quick {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.55rem;
  margin-top: 1rem;
}

.sbx-advanced {
  flex: 1 1 100%;
  margin-top: 0.15rem;
  padding: 0.65rem 0.8rem;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
}

.sbx-advanced > summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.sbx-advanced > summary:hover {
  color: var(--text);
}

.device-details > summary {
  cursor: pointer;
  list-style: none;
}

.device-details > summary::-webkit-details-marker {
  display: none;
}

.device-details > summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 0.45rem;
  color: var(--muted);
  transition: transform 0.12s ease;
}

.device-details[open] > summary::before {
  transform: rotate(90deg);
}

.device-details > summary:hover h2 {
  color: var(--accent-hover);
}

@media (max-width: 980px) {
  .sbx-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .kv {
    grid-template-columns: 1fr;
    gap: 0.15rem 0;
  }

  .kv dt {
    margin-top: 0.45rem;
  }

  .device-head-actions {
    padding-top: 0;
  }

  .sbx-card {
    min-height: 132px;
  }

  .sbx-card-state {
    font-size: 1.3rem;
  }

  .sbx-title {
    font-size: 1.2rem;
  }
}

@media (max-width: 420px) {
  .sbx-grid {
    grid-template-columns: 1fr;
  }
}