:root {
  --bg: #14171b;
  --panel: #1b1f25;
  --panel-raised: #232832;
  --border: #2c323c;
  --text: #e7e9ec;
  --text-muted: #8b94a0;
  --accent: #e09e4a;
  --accent-dim: #b87f38;
  --accent-soft: rgba(224, 158, 74, 0.14);
  --danger: #e0644a;
  --danger-soft: rgba(224, 100, 74, 0.14);
  --success: #7fb86b;
  --mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
}

button, input, textarea, select {
  font-family: inherit;
  color: inherit;
}

a { color: var(--accent); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- layout shell ---------- */

#app { min-height: 100vh; min-height: 100dvh; }

.center-screen {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.shell {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 20px 8px;
}

.brand-mark {
  display: inline-flex;
  gap: 3px;
  align-items: flex-end;
  height: 20px;
}
.brand-mark span {
  display: block;
  width: 4px;
  background: var(--accent);
  border-radius: 2px;
}
.brand-mark span:nth-child(1) { height: 40%; }
.brand-mark span:nth-child(2) { height: 70%; }
.brand-mark span:nth-child(3) { height: 100%; }
.brand-mark span:nth-child(4) { height: 55%; }

.brand-name {
  font-weight: 600;
  letter-spacing: 0.01em;
  font-size: 15px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  font-size: 14px;
  width: 100%;
}
.nav-item:hover { background: var(--panel-raised); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }

.sidebar-footer {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.main {
  flex: 1;
  min-width: 0;
  padding: 28px 32px 60px;
  overflow-y: auto;
}

.page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 20px;
  margin: 0;
  font-weight: 600;
}

.page-sub {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

/* ---------- primitives ---------- */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-raised);
  color: var(--text);
  font-size: 13.5px;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { border-color: #3a4250; }
.btn:disabled { opacity: 0.5; cursor: default; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a1206;
  font-weight: 600;
}
.btn-primary:hover { background: #eaad60; }

.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}
.btn-danger:hover { background: var(--danger-soft); }

.btn-sm { padding: 6px 10px; font-size: 12.5px; }

input[type="text"], input[type="password"], textarea, select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  width: 100%;
}
input[type="text"]:focus, input[type="password"]:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}
textarea { font-family: inherit; resize: vertical; }
select { width: auto; }

label {
  display: block;
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.field { margin-bottom: 14px; }

.mono { font-family: var(--mono); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  background: var(--panel-raised);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.error-banner {
  background: var(--danger-soft);
  border: 1px solid rgba(224, 100, 74, 0.4);
  color: #ffb9a6;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13.5px;
  margin-bottom: 16px;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 50px 20px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}

/* ---------- login ---------- */

.login-card {
  width: 100%;
  max-width: 360px;
  padding: 32px 28px;
}

.login-card .brand { padding: 0 0 26px 0; justify-content: center; }
.login-card h1 {
  font-size: 17px;
  text-align: center;
  margin: 0 0 22px;
  font-weight: 500;
  color: var(--text-muted);
}

.login-card button[type="submit"] { width: 100%; justify-content: center; margin-top: 6px; }

/* ---------- groups & accounts ---------- */

.group-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  margin-bottom: 14px;
  overflow: hidden;
}

.group-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
  flex-wrap: wrap;
}

.group-name { font-weight: 600; font-size: 15px; }
.group-meta { color: var(--text-muted); font-size: 12.5px; margin-top: 2px; }

.account-row, .grant-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
  flex-wrap: wrap;
}
.account-row:last-child, .grant-row:last-child { border-bottom: none; }

.account-name { font-family: var(--mono); font-size: 13.5px; }
.account-id { color: var(--text-muted); font-size: 11.5px; }

.inline-form {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  flex-wrap: wrap;
  background: var(--panel-raised);
}
.inline-form input { flex: 1; min-width: 140px; }

.row-actions { display: flex; gap: 6px; }

/* ---------- access terminal (matrix) ---------- */

.section-toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 180px;
  max-width: 280px;
}
.search-input-wrap input[type="text"] { padding-left: 32px; }
.search-input-wrap svg {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
  pointer-events: none;
}

.matrix-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 12px;
  margin-left: auto;
}
.matrix-legend .matrix-toggle { margin: 0; pointer-events: none; }

.matrix-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  max-width: 100%;
  background: var(--panel);
}

.matrix-table {
  border-collapse: separate;
  border-spacing: 0;
  width: max-content;
  min-width: 100%;
}

.matrix-table th, .matrix-table td {
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
.matrix-table tr:last-child td { border-bottom: none; }
.matrix-table th:last-child, .matrix-table td:last-child { border-right: none; }

.matrix-corner {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 3;
  background: var(--panel-raised);
  min-width: 168px;
}

.matrix-col-head {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--panel-raised);
  padding: 10px 16px;
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
  text-align: center;
  position: relative;
}
.matrix-col-head .channel-path { display: block; font-weight: 400; margin-top: 2px; }

.col-hide-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  line-height: 14px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.1s;
}
.matrix-col-head:hover .col-hide-btn { opacity: 1; }
.col-hide-btn:hover { background: var(--danger-soft); color: var(--danger); }

.matrix-row-head {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--panel);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 13px;
  white-space: nowrap;
  text-align: left;
  min-width: 168px;
}
.matrix-row-head .group-meta { font-family: var(--sans); }

.matrix-cell {
  padding: 0;
  text-align: center;
  min-width: 64px;
}

.matrix-toggle {
  width: 32px;
  height: 32px;
  margin: 8px auto;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.matrix-toggle:hover { border-color: var(--accent-dim); }
.matrix-toggle:disabled { opacity: 0.45; cursor: default; }
.matrix-toggle.granted { background: var(--accent-soft); border-color: var(--accent); }
.matrix-toggle.granted::after {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--accent);
  display: block;
}

.matrix-empty-row {
  color: var(--text-muted);
  padding: 14px 16px;
  font-size: 13.5px;
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel-raised);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 50;
}
.toast.error { border-color: rgba(224,100,74,0.5); color: #ffb9a6; }

/* ---------- mobile / iPad ---------- */

@media (max-width: 860px) {
  .shell { flex-direction: column; }
  .sidebar {
    width: 100%;
    flex-direction: row;
    align-items: center;
    padding: 10px 14px;
    border-right: none;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
  }
  .brand { padding: 0 14px 0 0; }
  .sidebar-footer { margin-top: 0; padding-top: 0; border-top: none; margin-left: auto; }
  .nav-item { width: auto; }
  .main { padding: 20px 16px 60px; }
}