:root {
  --ink: #0f1c24;
  --ink-2: #162a35;
  --ink-3: #1e3a4a;
  --mist: #eef3f6;
  --paper: #f7fafb;
  --line: #d5e0e6;
  --muted: #5c7380;
  --text: #14242e;
  --accent: #0d9f8a;
  --accent-2: #0b7f6e;
  --accent-soft: rgba(13, 159, 138, 0.12);
  --warn: #c47a12;
  --danger: #c23b3b;
  --ok: #1a8f5a;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 28, 36, 0.08);
  --font: "Outfit", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--accent); }

code, .font-monospace, .mono {
  font-family: var(--mono);
  font-size: 0.86em;
}

/* Shell */
.op-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.op-sidebar {
  background:
    radial-gradient(1200px 500px at -10% -20%, rgba(13, 159, 138, 0.22), transparent 55%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  color: #e8f1f4;
  padding: 1.4rem 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.op-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0.5rem;
}

.op-brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--accent), #147a9a);
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: -0.04em;
  box-shadow: 0 8px 20px rgba(13, 159, 138, 0.35);
}

.op-brand-text strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.op-brand-text span {
  display: block;
  font-size: 0.78rem;
  color: rgba(232, 241, 244, 0.65);
}

.op-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.op-nav a {
  color: rgba(232, 241, 244, 0.78);
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}

.op-nav a:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
  transform: translateX(2px);
}

.op-nav a.active {
  background: var(--accent-soft);
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(13, 159, 138, 0.35);
}

.op-nav-ico {
  width: 1.25rem;
  opacity: 0.9;
}

.op-sidebar-foot {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.op-sidebar-foot a {
  color: rgba(232, 241, 244, 0.7);
  font-size: 0.88rem;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
}
.op-sidebar-foot a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.op-sidebar-foot a.danger:hover { color: #ffb4b4; }

.op-main {
  padding: 1.75rem 2rem 3rem;
  max-width: 1280px;
}

.op-page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.op-page-head h1 {
  margin: 0;
  font-size: 1.65rem;
  letter-spacing: -0.03em;
  font-weight: 650;
}

.op-page-head p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 52rem;
}

.op-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Panels */
.op-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.op-panel-hd {
  padding: 0.9rem 1.15rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #fff, var(--mist));
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.op-panel-hd h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.op-panel-bd { padding: 1.15rem; }

/* Buttons */
.btn-op {
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-bg: var(--accent-2);
  --bs-btn-hover-border-color: var(--accent-2);
  --bs-btn-color: #fff;
  --bs-btn-hover-color: #fff;
  --bs-btn-active-bg: var(--accent-2);
  --bs-btn-active-border-color: var(--accent-2);
  border-radius: 10px !important;
  font-weight: 560;
  padding: 0.5rem 1rem;
}

.btn-op-ghost {
  border-radius: 10px !important;
  border: 1px solid var(--line) !important;
  background: #fff !important;
  color: var(--text) !important;
  font-weight: 550;
}
.btn-op-ghost:hover {
  border-color: var(--accent) !important;
  color: var(--accent-2) !important;
  background: var(--accent-soft) !important;
}

/* Table */
.op-table {
  width: 100%;
  margin: 0;
  border-collapse: separate;
  border-spacing: 0;
}

.op-table thead th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: var(--mist);
  white-space: nowrap;
}

.op-table tbody td {
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.op-table tbody tr {
  transition: background .15s ease;
}
.op-table tbody tr:hover { background: rgba(13, 159, 138, 0.04); }
.op-table tbody tr.is-warn { background: rgba(196, 122, 18, 0.08); }

.op-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--mist);
  color: var(--ink-3);
}
.op-pill.ok { background: rgba(26, 143, 90, 0.12); color: var(--ok); }
.op-pill.warn { background: rgba(196, 122, 18, 0.15); color: var(--warn); }

.op-key {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--mist);
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--line);
}

/* Forms */
.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.form-control, .form-select, textarea.form-control {
  border-radius: 10px !important;
  border-color: var(--line) !important;
  padding: 0.6rem 0.8rem;
  background: #fff;
}
.form-control:focus, .form-select:focus, textarea.form-control:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px var(--accent-soft) !important;
}

.op-alert {
  border-radius: 12px;
  border: 1px solid transparent;
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
}
.op-alert.ok { background: rgba(26,143,90,.1); border-color: rgba(26,143,90,.25); color: #146b44; }
.op-alert.err { background: rgba(194,59,59,.1); border-color: rgba(194,59,59,.25); color: #8f2a2a; }
.op-alert.info { background: var(--accent-soft); border-color: rgba(13,159,138,.25); color: var(--ink-3); }

/* Feature groups */
.op-feature-group {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 0.75rem;
  overflow: hidden;
  background: #fff;
}
.op-feature-group summary {
  list-style: none;
  cursor: pointer;
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--mist);
  font-weight: 620;
  user-select: none;
}
.op-feature-group summary::-webkit-details-marker { display: none; }
.op-feature-group[open] summary {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--accent-soft), var(--mist));
}
.op-feature-group .body { padding: 1rem; }
.op-feature-check {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  height: 100%;
  transition: border-color .15s, background .15s;
}
.op-feature-check:hover {
  border-color: rgba(13,159,138,.45);
  background: rgba(13,159,138,.04);
}

/* Login */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background:
    radial-gradient(900px 500px at 10% 0%, rgba(13,159,138,.25), transparent 50%),
    radial-gradient(700px 400px at 90% 100%, rgba(20,122,154,.2), transparent 45%),
    linear-gradient(160deg, #0f1c24, #16303c 55%, #0f1c24);
}

.login-card {
  width: min(420px, 100%);
  background: rgba(255,255,255,0.96);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: 0 30px 60px rgba(0,0,0,.35);
  animation: rise .45s ease both;
}

.login-card h1 {
  margin: 0 0 0.35rem;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.op-snippet {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--ink);
  color: #d7ebe6;
  border: none;
  border-radius: 12px;
  padding: 1rem;
  width: 100%;
  min-height: 10rem;
}

@media (max-width: 900px) {
  .op-shell { grid-template-columns: 1fr; }
  .op-sidebar {
    position: relative;
    height: auto;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .op-main { padding: 1.25rem; }
}