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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-base);
  color: var(--text-hi);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

[hidden] {
  display: none !important;
}

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

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

/* ── Login ── */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(ellipse 80% 60% at 70% 0%, rgba(200, 169, 106, 0.08), transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(200, 169, 106, 0.04), transparent 50%),
    var(--bg-base);
}

.login-panel {
  width: min(420px, 100%);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: clamp(32px, 6vw, 48px);
  box-shadow: var(--shadow-md);
}

.login-brand {
  text-align: center;
  margin-bottom: 32px;
}

.login-brand__eyebrow {
  margin: 0 0 10px;
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.login-brand__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.login-brand__sub {
  margin: 10px 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-low);
}

.login-brand__concept {
  margin: 16px 0 0;
  font-size: 0.8rem;
  color: var(--text-mid);
  font-style: italic;
  letter-spacing: 0.02em;
}

.login-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-low);
}

.login-footer a {
  color: var(--text-mid);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ── App shell ── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-raised);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: transform var(--transition), width var(--transition);
}

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-brand__logo {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-brand__tag {
  margin: 6px 0 0;
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-low);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  overflow-y: auto;
}

.sidebar-nav__group {
  margin-bottom: 20px;
}

.sidebar-nav__label {
  display: block;
  padding: 0 10px 8px;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-low);
}

.sidebar-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  margin-bottom: 2px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-mid);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.sidebar-nav__link:hover {
  background: var(--bg-overlay);
  color: var(--text-hi);
}

.sidebar-nav__link.is-active {
  background: rgba(200, 169, 106, 0.1);
  border-color: rgba(200, 169, 106, 0.22);
  color: var(--accent);
}

.sidebar-nav__icon {
  flex-shrink: 0;
  width: 18px;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.85;
}

.sidebar-nav__text {
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.68rem;
  color: var(--text-low);
  letter-spacing: 0.06em;
}

.sidebar-footer__version {
  color: var(--text-mid);
}

.app-main {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}

.app-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 clamp(16px, 3vw, 28px);
  background: rgba(14, 12, 10, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.topbar-toggle {
  display: none;
  flex-shrink: 0;
}

.topbar-breadcrumb {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.topbar-breadcrumb__root {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-low);
  white-space: nowrap;
}

.topbar-breadcrumb__sep {
  color: var(--border-strong);
  font-size: 0.7rem;
}

.topbar-breadcrumb__current {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-hi);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: min(220px, 100%);
  padding: 7px 12px;
  background: var(--bg-overlay);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-low);
  font-size: 0.8rem;
}

.topbar-search__input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-mid);
  font: inherit;
  outline: none;
  min-width: 0;
}

.topbar-search__input::placeholder {
  color: var(--text-low);
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-low);
}

.topbar-status__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-low);
}

.topbar-status__dot.is-ok {
  background: var(--ok);
  box-shadow: 0 0 6px rgba(111, 163, 124, 0.5);
}

.topbar-status__dot.is-error {
  background: var(--danger);
}

.topbar-user {
  font-size: 0.75rem;
  color: var(--text-mid);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: none;
}

.app-content {
  flex: 1;
  padding: clamp(20px, 3vw, 32px);
  overflow-x: hidden;
  min-width: 0;
}

.view-panel {
  animation: viewIn 0.22s ease;
}

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.view-header {
  margin-bottom: 24px;
}

.view-header__title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-hi);
}

.view-header__desc {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-mid);
  max-width: 56ch;
}

/* Sidebar overlay (mobile) */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: calc(var(--z-sidebar) - 1);
}

/* ── Tablet: collapsed sidebar ── */
@media (max-width: 1024px) {
  .app-sidebar {
    width: var(--sidebar-w-collapsed);
  }

  .sidebar-brand__tag,
  .sidebar-nav__label,
  .sidebar-nav__text,
  .sidebar-footer {
    display: none;
  }

  .sidebar-brand {
    padding: 18px 12px;
    text-align: center;
  }

  .sidebar-brand__logo {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
  }

  .sidebar-nav__link {
    justify-content: center;
    padding: 12px;
  }

  .app-main {
    margin-left: var(--sidebar-w-collapsed);
  }

  .topbar-search {
    display: none;
  }

  .topbar-user {
    display: none;
  }
}

/* ── Mobile: overlay sidebar ── */
@media (max-width: 768px) {
  .topbar-toggle {
    display: inline-flex;
  }

  .app-sidebar {
    width: var(--sidebar-w);
    transform: translateX(-100%);
  }

  .app-sidebar.is-open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .app-sidebar.is-open .sidebar-brand__tag,
  .app-sidebar.is-open .sidebar-nav__label,
  .app-sidebar.is-open .sidebar-nav__text,
  .app-sidebar.is-open .sidebar-footer {
    display: block;
  }

  .app-sidebar.is-open .sidebar-brand {
    text-align: left;
    padding: 20px 20px 16px;
  }

  .app-sidebar.is-open .sidebar-brand__logo {
    font-size: 0.95rem;
    letter-spacing: 0.2em;
  }

  .app-sidebar.is-open .sidebar-nav__link {
    justify-content: flex-start;
    padding: 10px 12px;
  }

  .sidebar-backdrop.is-visible {
    display: block;
  }

  .app-main {
    margin-left: 0;
  }

  .topbar-meta .badge--stripe {
    display: none;
  }
}

@media (min-width: 900px) {
  .topbar-user {
    display: inline;
  }
}