/* ==========================================================================
   OPERONE Platform SDK — Shared UI Components (@operone/ui)
   Specification: OPERONE-ARCH-00 & OPERONE-ARCH-01
   ========================================================================== */

/* Corporate Header & AppShell */
.operone-header {
  background: var(--operone-bg-surface);
  border-bottom: 1px solid var(--operone-border-subtle);
  height: 72px;
  padding: 0 var(--operone-space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.operone-brand {
  display: flex;
  align-items: center;
  gap: var(--operone-space-3);
  text-decoration: none;
}

.operone-brand-title {
  font-family: var(--operone-font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--operone-text-primary);
  letter-spacing: -0.5px;
}

.operone-brand-subtitle {
  font-family: var(--operone-font-heading);
  font-weight: 500;
  color: var(--operone-accent-internal);
  margin-left: var(--operone-space-2);
}

.operone-header-actions {
  display: flex;
  align-items: center;
  gap: var(--operone-space-4);
}

/* Theme Switcher Widget */
.operone-theme-switcher {
  position: relative;
  display: inline-block;
}

.operone-theme-btn {
  background: var(--operone-bg-elevated);
  color: var(--operone-text-primary);
  border: 1px solid var(--operone-border-subtle);
  padding: var(--operone-space-2) var(--operone-space-3);
  border-radius: var(--operone-radius-controls);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--operone-space-2);
  font-family: var(--operone-font-heading);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.operone-theme-btn:hover {
  border-color: var(--operone-border-strong);
  background: var(--operone-bg-surface);
}

.operone-theme-menu {
  position: absolute;
  right: 0;
  top: calc(100% + var(--operone-space-2));
  background: var(--operone-bg-surface);
  border: 1px solid var(--operone-border-subtle);
  border-radius: var(--operone-radius-controls);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  display: none;
  flex-direction: column;
  width: 140px;
  z-index: 1100;
  overflow: hidden;
}

.operone-theme-menu.show {
  display: flex;
}

.operone-theme-menu button {
  background: none;
  border: none;
  padding: var(--operone-space-3) var(--operone-space-4);
  text-align: left;
  color: var(--operone-text-primary);
  font-size: 13px;
  font-family: var(--operone-font-body);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.operone-theme-menu button:hover {
  background: var(--operone-bg-elevated);
  color: var(--operone-accent-internal);
}

/* Cards & Surfaces */
.operone-card {
  background: var(--operone-bg-surface);
  border: 1px solid var(--operone-border-subtle);
  border-radius: var(--operone-radius-cards);
  padding: var(--operone-space-6);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.operone-card:hover {
  border-color: var(--operone-border-strong);
}

.operone-hero-card {
  background: var(--operone-bg-surface);
  border: 1px solid var(--operone-border-subtle);
  border-radius: var(--operone-radius-hero);
  padding: var(--operone-space-8);
}

/* Status Badges */
.operone-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--operone-space-2);
  padding: var(--operone-space-1) var(--operone-space-3);
  border-radius: var(--operone-radius-pill);
  font-size: 12px;
  font-weight: 600;
  font-family: var(--operone-font-heading);
}

.operone-badge-success {
  background: rgba(35, 138, 87, 0.15);
  color: var(--operone-state-success);
  border: 1px solid var(--operone-state-success);
}

.operone-badge-warning {
  background: rgba(183, 120, 22, 0.15);
  color: var(--operone-state-warning);
  border: 1px solid var(--operone-state-warning);
}

.operone-badge-error {
  background: rgba(201, 72, 72, 0.15);
  color: var(--operone-state-error);
  border: 1px solid var(--operone-state-error);
}

.operone-badge-info {
  background: rgba(79, 70, 229, 0.15);
  color: var(--operone-accent-internal);
  border: 1px solid var(--operone-accent-internal);
}

/* Buttons */
.operone-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--operone-space-2);
  padding: var(--operone-space-2) var(--operone-space-4);
  border-radius: var(--operone-radius-controls);
  font-family: var(--operone-font-heading);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.operone-btn-primary {
  background: var(--operone-accent-internal);
  color: #FFFFFF;
}

.operone-btn-secondary {
  background: var(--operone-bg-elevated);
  color: var(--operone-text-primary);
  border-color: var(--operone-border-subtle);
}

.operone-btn-secondary:hover {
  border-color: var(--operone-border-strong);
}

/* Toast Notifications */
.operone-toast-container {
  position: fixed;
  bottom: var(--operone-space-6);
  right: var(--operone-space-6);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--operone-space-3);
}

.operone-toast {
  background: var(--operone-bg-surface);
  border: 1px solid var(--operone-border-subtle);
  border-left: 4px solid var(--operone-accent-internal);
  border-radius: var(--operone-radius-controls);
  padding: var(--operone-space-3) var(--operone-space-4);
  color: var(--operone-text-primary);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: var(--operone-space-3);
}