/* Ocean page geometry. Business modules own their content; this layer owns the shell. */

.layout:has(.student-sidebar-menu) {
  min-width: 0;
  background: var(--ocean-color-bg);
}

.sidebar:has(.student-sidebar-menu) {
  width: var(--ocean-sidebar-width) !important;
  min-width: var(--ocean-sidebar-width) !important;
  transition: width var(--ocean-transition-base), min-width var(--ocean-transition-base), transform var(--ocean-transition-base);
}

.sidebar:has(.student-sidebar-menu) .sidebar-header,
.layout:has(.student-sidebar-menu) .topbar {
  height: var(--ocean-topbar-height);
  min-height: var(--ocean-topbar-height);
}

.layout:has(.student-sidebar-menu) .page-content:not(:has(.ai-page-root)) {
  padding: var(--ocean-content-padding);
}

.layout:has(.student-sidebar-menu) .page-content:has(.ai-page-root) {
  padding: 0;
}

/* Ocean AI has three deliberate states: business sidebar, icon rail, mobile overlay. */
.ai-home-page.history-open .ai-home-layout {
  margin-left: var(--ocean-ai-history-width);
}

.ai-history-drawer {
  width: var(--ocean-ai-history-width);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(calc(-100% - 4px));
  transition: transform var(--ocean-transition-base), opacity var(--ocean-transition-fast), visibility 0s linear var(--ocean-transition-base);
}

.ai-home-page.history-open .ai-history-drawer {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
  transition-delay: 0s;
}

.ai-directory-head {
  min-height: var(--ocean-topbar-height);
  padding: 9px 16px;
}

.ai-chat-header {
  min-height: var(--ocean-topbar-height);
  padding: 8px 20px;
}

.ai-page .ai-panel-messages {
  padding: 24px 32px 28px;
}

.ai-page .ai-welcome {
  width: min(1120px, 100%);
}

.ai-welcome-hero {
  min-height: 124px;
  padding: 20px 24px;
}

.ai-welcome-support-grid {
  gap: 14px;
  margin-top: 14px;
}

.ai-start-guide,
.ai-workspace-panel {
  min-height: 144px;
}

.ai-page .ai-panel-input {
  padding: 10px 28px 16px;
}

.ai-composer-shell {
  width: min(960px, 100%);
}

.layout:has(.ai-home-page.history-open) .sidebar:has(.student-sidebar-menu) {
  width: var(--ocean-sidebar-icon-width) !important;
  min-width: var(--ocean-sidebar-icon-width) !important;
}

.layout:has(.ai-home-page.history-open) .sidebar:has(.student-sidebar-menu) .sidebar-header {
  height: var(--ocean-topbar-height);
  min-height: var(--ocean-topbar-height);
}

.layout:has(.ai-home-page.history-open) .sidebar:has(.student-sidebar-menu) .sidebar-header .logo-mark,
.layout:has(.ai-home-page.history-open) .sidebar:has(.student-sidebar-menu) .sidebar-user-avatar {
  width: 32px;
  height: 32px;
}

.layout:has(.ai-home-page.history-open) .sidebar .student-sidebar-menu {
  padding-right: 6px;
  padding-left: 6px;
}

.layout:has(.ai-home-page.history-open) .student-sidebar-menu .student-primary-nav,
.layout:has(.ai-home-page.history-open) .student-sidebar-menu .student-utility-nav,
.layout:has(.ai-home-page.history-open) .student-sidebar-menu .student-nav-group-title {
  height: 56px;
  min-height: 56px;
  border-radius: var(--ocean-radius-card);
}

/* Dashboard and feature center share one readable work surface. */
.lph-page,
.lph-dashboard-page,
.lph-feature-center-page {
  width: min(1280px, 100%);
  margin-right: auto;
  margin-left: auto;
}

.lph-dashboard-jump {
  top: 0;
  border-radius: var(--ocean-radius-card);
  background: rgba(255, 255, 255, .96);
}

.lph-dashboard-section {
  margin-bottom: 32px;
}

.lph-dashboard-section:last-child {
  margin-bottom: 0;
}

@media (min-width: 1180px) {
  .lph-feature-center-page .lph-function-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1100px) {
  :root {
    --ocean-content-padding: 22px;
  }

  .ai-page .ai-panel-messages {
    padding-right: 24px;
    padding-left: 24px;
  }
}

@media (max-width: 760px) {
  :root {
    --ocean-content-padding: 16px;
  }

  .ai-home-page.history-open .ai-home-layout {
    margin-left: 0;
  }

  .layout:has(.ai-home-page) > .sidebar:has(.student-sidebar-menu),
  .layout:has(.ai-home-page.history-open) > .sidebar:has(.student-sidebar-menu),
  .layout.sidebar-collapsed:has(.ai-home-page.history-open) > .sidebar:has(.student-sidebar-menu) {
    display: none !important;
    width: 0 !important;
    min-width: 0 !important;
  }

  .ai-history-drawer {
    left: 0 !important;
    width: min(var(--ocean-ai-history-width), calc(100vw - 40px));
    box-shadow: var(--ocean-shadow-md);
  }

  .ai-home-page.history-open .ai-history-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .ai-chat-header {
    min-height: 52px;
    padding: 7px 12px;
  }

  .ai-page .ai-panel-messages {
    padding: 16px;
  }

  .ai-page .ai-panel-input {
    padding: 8px 12px 12px;
  }

  .ai-welcome-support-grid {
    grid-template-columns: 1fr;
  }

  .lph-dashboard-section {
    margin-bottom: 24px;
  }
}