/* ==========================================================
   layout.css — App Shell, Sidebar, Header & Grid Layout
   ========================================================== */

/* ---- Login Screen ---- */
#loginScreen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-lg);
  background: linear-gradient(135deg, #1a1f36 0%, #2d3456 50%, #1a1f36 100%);
}

.login-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  animation: fadeInUp 0.4s ease;
}

.login-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.login-logo-icon {
  margin-bottom: var(--space-md);
}

.login-app-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.login-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-base);
}

.login-form .form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.login-form .form-input {
  width: 100%;
  padding: 10px 12px;
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-input);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.login-form .form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

.input-password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-password-wrapper .form-input {
  padding-right: 40px;
}

.password-toggle-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 4px;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.password-toggle-btn:hover {
  color: var(--color-text-secondary);
}

.login-error {
  display: none;
  font-size: var(--font-size-sm);
  color: var(--color-danger);
  background: var(--color-danger-light);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(245, 34, 45, 0.2);
}

.login-error.visible {
  display: block;
}

.login-footer {
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.login-footer p {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 0;
}

/* ---- App Container ---- */
#appContainer {
  display: flex;
  min-height: 100vh;
  background: var(--color-bg);
}

/* ---- Sidebar ---- */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-bg-sidebar);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sticky);
  overflow-y: auto;
  overflow-x: hidden;
  transition: width var(--transition-slow);
}

.sidebar-header {
  padding: var(--space-lg) var(--space-base);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-app-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  white-space: nowrap;
}

/* ---- Form Selector in Sidebar ---- */
.sidebar-form-selector {
  padding: var(--space-md) var(--space-base);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.form-selector-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-selector-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: var(--font-weight-semibold);
}

.sidebar-form-selector .form-select-sm {
  width: 100%;
  background: var(--color-bg-sidebar-hover);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-inverse);
  padding: 6px 10px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.sidebar-form-selector .form-select-sm:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: var(--shadow-focus);
}

.sidebar-form-selector .form-select-sm option {
  background: var(--color-bg-sidebar);
  color: var(--color-text-inverse);
}

#activeFormBadge {
  margin-top: var(--space-xs);
  align-self: flex-start;
}

/* ---- Tab Navigation ---- */
.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) 0;
  overflow-y: auto;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  padding: 10px var(--space-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-sidebar);
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  white-space: nowrap;
}

.tab-btn:hover {
  background: var(--color-bg-sidebar-hover);
  color: var(--color-text-inverse);
}

.tab-btn.active {
  background: var(--color-bg-sidebar-active);
  color: var(--color-text-inverse);
  border-left-color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.tab-btn .icon {
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.tab-btn:hover .icon,
.tab-btn.active .icon {
  opacity: 1;
}

/* ---- Sidebar User Profile ---- */
.sidebar-user {
  padding: var(--space-md) var(--space-base);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.sidebar-user-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
  text-transform: uppercase;
}

.user-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: capitalize;
}

.sidebar-user .btn-ghost {
  justify-content: flex-start;
  color: var(--color-text-muted);
  padding: 6px var(--space-sm);
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
}

.sidebar-user .btn-ghost:hover {
  background: var(--color-bg-sidebar-hover);
  color: var(--color-danger);
}

/* ---- Main Content Area ---- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--content-padding);
  min-height: 100vh;
  overflow-x: hidden;
  transition: margin-left var(--transition-slow);
}

/* ---- Tab Content ---- */
.tab-content {
  display: none;
  animation: fadeIn 0.25s ease;
}

.tab-content.active {
  display: block;
}

/* ---- Content Header ---- */
.content-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-base);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.content-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.content-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: var(--space-xs) 0 0 0;
}

/* ---- Action Bar ---- */
.action-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ---- Section Headers ---- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-base);
}

.section-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

/* ---- admin-only default ---- */
.admin-only {
  display: flex;
}

button.admin-only,
div.admin-only.tab-content {
  display: none;
}

button.admin-only {
  display: none;
}

.admin-only.tab-content {
  display: none;
}

.admin-only.tab-content.active {
  display: block;
}

/* Sidebar tab buttons are flex by default */
.sidebar-nav .tab-btn.admin-only {
  display: flex;
}

/* ---- Keyframes ---- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}