body {
  display: flex;
  overflow: hidden;
}

/* ── Login Overlay ── */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 400ms ease, visibility 400ms ease;
}

.login-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.login-card {
  width: 380px;
  text-align: center;
}

.login-brand {
  margin-bottom: 24px;
}

.login-brand svg {
  width: 56px;
  height: 56px;
}

.login-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.login-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.login-form {
  text-align: left;
}

.login-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  display: block;
  margin-bottom: 8px;
}

.login-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  font-family: Inter, sans-serif;
  letter-spacing: 4px;
  text-align: center;
  outline: none;
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
}

.login-input:focus {
  border-color: var(--accent);
}

.login-input.shake {
  animation: shake 400ms ease;
  border-color: var(--danger);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.login-error {
  font-size: 13px;
  color: var(--danger);
  min-height: 20px;
  margin-top: 8px;
}

.login-btn {
  width: 100%;
  padding: 14px;
  margin-top: 16px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  font-family: Inter, sans-serif;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.login-btn:hover {
  background: var(--accent-hover);
}

.login-footer {
  margin-top: 40px;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.5;
}

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-normal), min-width var(--transition-normal);
  z-index: 10;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 20px 24px;
}

.brand-icon {
  flex-shrink: 0;
}

.brand-text {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.3px;
  white-space: nowrap;
}

/* ── Navigation ── */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 0 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 450;
  transition: all var(--transition-fast);
  position: relative;
  margin-bottom: 2px;
}

.nav-item:hover {
  color: var(--text-primary);
  background: var(--accent-subtle);
}

.nav-item.active {
  color: var(--text-primary);
  background: var(--accent-glow);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 12px 12px 8px;
}

.nav-section-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-tertiary);
  padding: 4px 12px 8px;
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 450;
  font-family: Inter, sans-serif;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 12px;
}

.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--accent-subtle);
  border-color: var(--border);
}

.theme-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.theme-icon-dark { display: none; }

[data-theme="light"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: block; }

/* ── Sidebar Footer ── */
.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border-subtle);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ── Main Content ── */
#content {
  flex: 1;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
}

.view {
  padding: 32px 40px;
  max-width: 1400px;
  animation: viewFadeIn 300ms ease;
}

@keyframes viewFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.view-header {
  margin-bottom: 28px;
}

.view-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.view-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}