* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  font-family: var(--font-ui);
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-subtle);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  align-self: flex-start;
  height: 100vh;
  padding: var(--space-6) 0 var(--space-5);
  overflow-y: auto;
}

.sidebar__brand {
  padding: 0 var(--space-5) var(--space-6);
}

.sidebar__brand-title {
  font-family: var(--font-ui);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  margin: 0;
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 var(--space-3);
}

.sidebar__nav .sidebar__category {
  margin: var(--space-5) var(--space-3) var(--space-2);
}

.sidebar__nav .sidebar__category:first-child {
  margin-top: 0;
}

.sidebar__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  background: transparent;
  border: none;
  color: var(--sidebar-text);
  font-size: 0.92rem;
  font-weight: 500;
  text-align: left;
  padding: 10px var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.sidebar__link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

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

.sidebar__link.is-active {
  background: var(--accent-soft);
  color: var(--text-primary);
  box-shadow: inset -2px 0 0 var(--accent), 0 0 24px -8px var(--accent-glow);
}

.sidebar__link.is-coming-soon {
  color: var(--sidebar-text-dim);
}

.sidebar__link.is-coming-soon:hover {
  color: var(--sidebar-text);
}

.sidebar__badge {
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle-strong);
  color: var(--sidebar-text-dim);
}

.main-pane {
  flex: 1;
  min-width: 0;
  background: radial-gradient(ellipse 900px 500px at 15% -10%, rgba(46, 230, 197, 0.07), transparent 60%), var(--bg);
  padding: var(--space-7);
}

.tool-container {
  max-width: 960px;
  margin: 0 auto;
}

.coming-soon {
  max-width: 480px;
  margin: var(--space-8) auto;
  text-align: center;
  padding: var(--space-6);
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.coming-soon__badge {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 11px;
  border-radius: 999px;
  margin-bottom: var(--space-4);
}

.coming-soon__title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
  margin: 0 0 var(--space-2);
}

.coming-soon__text {
  color: var(--text-secondary);
  margin: 0;
}

@media (max-width: 760px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
  }

  .sidebar__brand {
    padding: 0;
    flex-shrink: 0;
  }

  .sidebar__nav {
    flex-direction: row;
    padding: 0;
    overflow-x: auto;
  }

  .sidebar__link {
    white-space: nowrap;
  }

  .sidebar__category {
    display: none;
  }

  .main-pane {
    padding: var(--space-5);
  }
}