:root {
  --app-ink: #16212b;
  --app-ink-soft: #22303c;
  --app-steel: #2e5c7e;
  --app-steel-soft: #dce6ee;
  --app-rule: #cfd3ce;
  --app-paper: #edeeea;
  --app-surface: #ffffff;
  --app-muted: #6e7b85;
  --app-alarm: #a63a2c;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { font-family: "IBM Plex Sans", system-ui, sans-serif; }

.admin-page { min-height: 100vh; background: var(--app-paper); color: var(--app-ink); }
.admin-shell { min-height: 100vh; display: grid; grid-template-columns: 236px minmax(0, 1fr); }
.admin-sidebar { min-height: 100vh; position: sticky; top: 0; align-self: start; display: flex; flex-direction: column; padding: 20px 14px; background: var(--app-ink); color: #dce3e7; }
.admin-brand { display: flex; align-items: center; gap: 11px; margin: 0 7px 28px; color: #fff; text-decoration: none; }
.admin-brand-mark { display: grid; place-items: center; width: 38px; height: 38px; flex: 0 0 38px; border: 1px solid #536370; color: #fff; font-size: 10px; font-weight: 700; letter-spacing: .08em; }
.admin-brand strong, .admin-brand small { display: block; }
.admin-brand strong { font-size: 12px; letter-spacing: .08em; }
.admin-brand small { margin-top: 2px; color: #8fa0ac; font-size: 10.5px; }
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav-label { margin: 18px 10px 5px; color: #758794; font-size: 9.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.admin-nav-label:first-child { margin-top: 0; }
.admin-nav-link { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-left: 2px solid transparent; color: #aebbc4; font-size: 13px; text-decoration: none; transition: background .15s ease, color .15s ease; }
.admin-nav-link:hover { background: var(--app-ink-soft); color: #fff; }
.admin-nav-link.active { border-left-color: #7da8c5; background: #263b4a; color: #fff; }
.admin-nav-icon { display: grid; place-items: center; width: 26px; height: 22px; border: 1px solid #4a5c69; color: #9fb2bf; font-family: ui-monospace, monospace; font-size: 9px; }
.admin-nav-link.active .admin-nav-icon { border-color: #6f91a8; color: #fff; }
.admin-sidebar-foot { margin-top: auto; padding: 18px 10px 0; border-top: 1px solid #2d3c48; color: #71828e; font-size: 10px; letter-spacing: .06em; }

.admin-workspace { min-width: 0; }
.admin-topbar { min-height: 72px; position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 24px; padding: 11px 24px; border-bottom: 1px solid var(--app-rule); background: rgba(255, 255, 255, .96); }
.admin-page-title { min-width: 150px; }
.admin-page-title span { display: block; margin-bottom: 2px; color: var(--app-muted); font-size: 9.5px; font-weight: 700; letter-spacing: .11em; }
.admin-page-title h1 { margin: 0; color: var(--app-ink); font-size: 17px; font-weight: 600; }
.admin-weeknav { margin-left: auto; display: flex; align-items: center; gap: 7px; }
.admin-weeknav button { padding: 4px 10px; border: 1px solid var(--app-rule); border-radius: 2px; background: #fff; color: var(--app-ink); }
.admin-weeknav button:hover { border-color: var(--app-steel); background: #f5f7f8; }
.admin-weeknav button:disabled { opacity: .55; cursor: wait; }
.admin-weeknav .range { min-width: 174px; color: var(--app-ink); font-family: ui-monospace, monospace; font-size: 12px; text-align: center; }
.admin-user-menu { margin-left: auto; display: flex; align-items: center; gap: 9px; padding-left: 20px; border-left: 1px solid #e1e4e1; color: #4d5a64; font-size: 12.5px; }
.admin-weeknav + .admin-user-menu { margin-left: 0; }
.admin-avatar { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--app-steel-soft); color: var(--app-steel); font-size: 11px; font-weight: 700; }
.admin-user-menu form { margin: 0; }
.admin-user-menu button { padding: 4px 8px; border: 1px solid var(--app-rule); border-radius: 2px; background: #fff; color: #4d5a64; font: inherit; cursor: pointer; }
.admin-user-menu button:hover { border-color: var(--app-steel); color: var(--app-ink); }

.admin-content { width: 100%; max-width: 1320px; margin: 0 auto; padding: 28px; }
.admin-content-wide { max-width: none; }
.dashboard-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; padding: 28px 30px; border: 1px solid var(--app-rule); border-top: 3px solid var(--app-steel); background: var(--app-surface); }
.dashboard-intro h2, .section-heading h2 { margin: 0; font-size: 22px; font-weight: 600; }
.dashboard-intro p:not(.section-kicker) { max-width: 680px; margin: 8px 0 0; color: var(--app-muted); font-size: 13.5px; }
.section-kicker { margin: 0 0 5px; color: var(--app-steel); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.tool-count { min-width: 140px; padding-left: 24px; border-left: 1px solid var(--app-rule); }
.tool-count strong, .tool-count span { display: block; }
.tool-count strong { font-family: ui-monospace, monospace; font-size: 30px; line-height: 1; }
.tool-count span { margin-top: 5px; color: var(--app-muted); font-size: 11px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; margin: 30px 0 13px; }
.section-heading h2 { font-size: 16px; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 14px; }
.tool-card { min-height: 170px; display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; gap: 16px; padding: 20px; border: 1px solid var(--app-rule); background: var(--app-surface); color: var(--app-ink); text-decoration: none; transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease; }
.tool-card:hover { border-color: #8ca7ba; box-shadow: 0 10px 25px rgba(22, 33, 43, .08); transform: translateY(-2px); }
.tool-card-icon { display: grid; place-items: center; width: 48px; height: 48px; background: var(--app-steel-soft); color: var(--app-steel); font-family: ui-monospace, monospace; font-size: 12px; font-weight: 700; }
.tool-card-content { display: flex; flex-direction: column; align-items: flex-start; }
.tool-card-category { color: var(--app-muted); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.tool-card-content strong { margin-top: 3px; font-size: 16px; }
.tool-card-description { margin-top: 7px; color: #56636d; font-size: 12.5px; line-height: 1.55; }
.tool-card-meta { margin-top: auto; padding-top: 13px; color: var(--app-steel); font-size: 11px; }
.tool-card-arrow { align-self: center; color: #87949d; font-size: 19px; }

.tool-context { display: flex; align-items: center; justify-content: space-between; gap: 20px; max-width: 1720px; margin: 0 auto 12px; }
.tool-breadcrumb { display: flex; gap: 7px; color: var(--app-muted); font-size: 11.5px; }
.tool-context a { color: var(--app-steel); text-decoration: none; }
.tool-context strong { color: var(--app-ink); font-weight: 500; }
.tool-context p { margin: 0; color: var(--app-muted); font-size: 11.5px; }
.tool-context-actions { display: flex; align-items: center; gap: 12px; }
.tool-wrap { padding: 0; }
.btn-primary { background: var(--app-steel) !important; border-color: var(--app-steel) !important; color: #fff !important; }

.auth-page { min-height: 100vh; margin: 0; display: grid; place-items: center; padding: 24px; background: var(--app-paper); color: var(--app-ink); font-family: "IBM Plex Sans", system-ui, sans-serif; }
.login-card { width: min(100%, 390px); padding: 34px; background: #fff; border: 1px solid var(--app-rule); border-top: 4px solid var(--app-steel); box-shadow: 0 18px 50px rgba(22, 33, 43, .08); }
.brand-mark { display: inline-grid; place-items: center; width: 46px; height: 46px; margin-bottom: 20px; background: var(--app-ink); color: #fff; font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.eyebrow { margin: 0 0 5px; color: var(--app-steel); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
.login-card h1 { margin: 0; font-size: 24px; }
.login-intro { margin: 7px 0 24px; color: #6e7b85; font-size: 14px; }
.login-form { display: grid; gap: 12px; }
.login-form label { margin: 8px 0 0; color: #3e4c58; font-size: 13px; font-weight: 600; }
.login-form input { display: block; box-sizing: border-box; width: 100%; padding: 10px 11px; border: 1px solid var(--app-rule); border-radius: 2px; font: inherit; }
.login-form input:focus { border-color: var(--app-steel); outline: 2px solid rgba(46, 92, 126, .14); }
.login-form button { width: 100%; margin-top: 6px; padding: 10px 12px; border: 1px solid var(--app-steel); border-radius: 2px; background: var(--app-steel); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
.alert { margin: 0 0 14px; padding: 9px 11px; border-left: 3px solid var(--app-alarm); background: #f5ded9; color: #6e2418; font-size: 13px; }
.error-card { text-align: center; }
.error-code { margin: 0; color: var(--app-steel); font-family: ui-monospace, monospace; font-size: 42px; font-weight: 600; }
.back-link { color: var(--app-steel); font-weight: 600; }

@media (max-width: 900px) {
  .admin-shell { display: block; }
  .admin-sidebar { min-height: auto; position: static; padding: 11px 14px; }
  .admin-brand { margin: 0 0 10px; }
  .admin-brand small, .admin-sidebar-foot, .admin-nav-label { display: none; }
  .admin-nav { flex-direction: row; overflow-x: auto; }
  .admin-nav-link { flex: 0 0 auto; border-left: 0; border-bottom: 2px solid transparent; }
  .admin-nav-link.active { border-left: 0; border-bottom-color: #7da8c5; }
  .admin-topbar { position: static; }
}

@media (max-width: 720px) {
  .admin-topbar { flex-wrap: wrap; gap: 10px; padding: 12px 16px; }
  .admin-page-title { flex: 1; }
  .admin-weeknav { order: 3; width: 100%; margin: 2px 0 0; justify-content: center; }
  .admin-user-menu { margin-left: auto; padding-left: 10px; }
  .admin-user-name { display: none; }
  .admin-content { padding: 16px; }
  .dashboard-intro { align-items: flex-start; padding: 21px; }
  .tool-count { min-width: 92px; padding-left: 16px; }
  .admin-content-wide { padding: 10px; }
  .tool-context { align-items: flex-start; }
  .tool-breadcrumb { padding-top: 7px; }
  .tool-context-actions p { display: none; }
  .tool-grid { grid-template-columns: 1fr; }
}

@media (orientation: landscape) and (max-height: 560px) {
  .admin-sidebar { padding-top: 7px; padding-bottom: 7px; }
  .admin-brand { display: none; }
  .admin-topbar { min-height: 52px; padding-top: 7px; padding-bottom: 7px; }
  .admin-content-wide { padding: 7px; }
  .tool-context { margin-bottom: 6px; }
}