* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", sans-serif;
  color: var(--text);
  background: linear-gradient(140deg, var(--bg-start), var(--bg-end));
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: scroll;
  transition: background 0.25s ease, color 0.25s ease;
}

.background-shape {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 18%, var(--shape-a), transparent 33%),
    radial-gradient(circle at 88% 12%, var(--shape-b), transparent 35%),
    radial-gradient(circle at 78% 84%, var(--shape-c), transparent 40%),
    linear-gradient(120deg, color-mix(in srgb, var(--card) 60%, transparent), transparent 48%);
  filter: saturate(1.05);
  overflow: hidden;
}

.background-shape::before,
.background-shape::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.background-shape::before {
  width: 480px;
  height: 480px;
  left: -180px;
  top: 42%;
  background: radial-gradient(circle at center, color-mix(in srgb, var(--primary) 16%, transparent), transparent 68%);
  animation: bgFloatA 16s ease-in-out infinite;
}

.background-shape::after {
  width: 420px;
  height: 420px;
  right: -150px;
  top: 58%;
  background: radial-gradient(circle at center, color-mix(in srgb, var(--primary-gradient-end) 20%, transparent), transparent 70%);
  animation: bgFloatB 18s ease-in-out infinite;
}

.app-shell {
  --sidebar-collapsed: 88px;
  --sidebar-expanded: 260px;
  display: grid;
  grid-template-columns: var(--sidebar-collapsed) minmax(0, 1fr);
  min-height: 100vh;
  width: 100%;
  transition: grid-template-columns 0.22s ease;
}

.app-shell:has(.side-nav:hover) {
  grid-template-columns: var(--sidebar-expanded) minmax(0, 1fr);
}

.side-nav {
  border-right: 1px solid var(--border);
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 14px;
  background: color-mix(in srgb, var(--card) 74%, transparent);
  backdrop-filter: blur(8px);
  width: auto;
  overflow: hidden;
  z-index: 20;
  transition: width 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.side-nav:hover {
  box-shadow: 16px 0 36px rgba(20, 26, 52, 0.14);
  background: color-mix(in srgb, var(--card) 92%, transparent);
}

.side-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin-bottom: 6px;
}

.side-brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-gradient-end));
  color: var(--on-primary);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.02rem;
  flex: 0 0 auto;
  overflow: hidden;
}

.side-brand-text {
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.16s ease, transform 0.2s ease;
}

.side-nav:hover .side-brand-text {
  opacity: 1;
  transform: translateX(0);
}

.nav-btn {
  width: 100%;
  height: 52px;
  border-radius: 13px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  font-size: 1.22rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0 10px;
  line-height: 1;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.2s ease;
}

.nav-btn::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--primary) 82%, #ffffff), var(--primary-gradient-end));
  opacity: 0;
  transform: scaleY(0.5);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.nav-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  text-align: center;
  flex: 0 0 auto;
  font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
  font-size: 1.24rem;
  line-height: 1;
}

.nav-text {
  white-space: nowrap;
  font-size: 1rem;
  font-weight: 700;
  max-width: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateX(-6px);
  margin-left: 0;
  transition: max-width 0.2s ease, opacity 0.16s ease, transform 0.2s ease, margin-left 0.2s ease;
}

.side-nav:hover .nav-btn {
  justify-content: flex-start;
  padding: 0 12px;
  gap: 0;
}

.side-nav:hover .nav-text {
  max-width: 164px;
  margin-left: 10px;
  opacity: 1;
  transform: translateX(0);
}

.nav-btn.active,
.nav-btn:hover {
  background: linear-gradient(132deg, var(--primary), var(--primary-gradient-end));
  color: var(--on-primary);
  border-color: var(--primary);
  box-shadow: var(--glow);
  transform: translateY(-1px);
}

.nav-btn.active::before,
.nav-btn:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.workspace {
  padding: 18px 22px 26px;
  width: 100%;
  max-width: none;
  min-width: 0;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--topbar-bg-start) 96%, #ffffff), color-mix(in srgb, var(--topbar-bg-end) 92%, #ffffff)),
    linear-gradient(120deg, color-mix(in srgb, var(--primary) 10%, transparent), transparent 48%);
  position: relative;
  z-index: 10;
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 28px rgba(20, 26, 52, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  overflow: hidden;
}

.top-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(102deg, transparent 26%, color-mix(in srgb, var(--primary) 10%, transparent) 52%, transparent 78%);
  pointer-events: none;
  animation: sheenSweep 8s ease-in-out infinite;
}

.top-bar > * {
  position: relative;
  z-index: 1;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-gradient-end));
  color: var(--on-primary);
  font-weight: 800;
  border: 1px solid color-mix(in srgb, var(--primary) 42%, var(--border));
  box-shadow: 0 10px 20px color-mix(in srgb, var(--primary) 28%, transparent);
  overflow: hidden;
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border-radius: inherit;
}

.brand h1 {
  margin: 0;
  font-size: 1.22rem;
}

.brand p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.theme-control {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.93rem;
}

.theme-control select {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 12px;
  background: var(--card);
  color: var(--text);
  font: inherit;