/* ==========================================================================
   CrazyEditor Layout System
   Design System v1.0 — Page Layout Modes

   All 7 page layout modes as defined in MASTER.md Section 五.
   Uses ONLY CSS variables from tokens.css.
   ========================================================================== */


/* ==========================================================================
   0. Container
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}


/* ==========================================================================
   1. Main Framework Layout (.layout-main)
   For aggregate.html — Banner + Sidebar + Content
   ========================================================================== */

.layout-main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout-banner {
  height: var(--banner-height);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  box-shadow: var(--shadow-sm);
}

.layout-body {
  display: flex;
  flex: 1;
  padding-top: var(--banner-height);
}

.layout-sidebar {
  width: var(--sidebar-width);
  position: fixed;
  top: var(--banner-height);
  bottom: 0;
  left: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  transition: width 300ms var(--ease-default);
  z-index: var(--z-fixed);
  padding: var(--space-3) 0;
}

.layout-sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.layout-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--space-6);
  transition: margin-left 300ms var(--ease-default);
  min-height: calc(100vh - var(--banner-height));
}

.layout-sidebar.collapsed ~ .layout-content {
  margin-left: var(--sidebar-collapsed-width);
}


/* ==========================================================================
   2. Login Layout (.layout-login)
   Full-screen centered card
   ========================================================================== */

.layout-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}

.layout-login-card {
  max-width: 400px;
  width: 100%;
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* Glassmorphism variant for login card */
.layout-login-card--glass {
  background: var(--glass-bg);
  border: var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

@supports not (backdrop-filter: blur(12px)) {
  .layout-login-card--glass {
    background: rgba(255, 255, 255, 0.95);
  }
}


/* ==========================================================================
   3. Tool Page Layout (.layout-tool)
   Toolbar + Workspace + Optional Sidebar
   ========================================================================== */

.layout-tool {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.layout-toolbar {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.layout-workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.layout-workspace-main {
  flex: 1;
  padding: var(--space-6);
  overflow-y: auto;
  min-width: 0;
}

.layout-workspace-panel {
  width: 320px;
  border-left: 1px solid var(--color-border);
  padding: var(--space-4);
  overflow-y: auto;
  background: var(--color-surface);
  flex-shrink: 0;
}


/* ==========================================================================
   4. List Page Layout (.layout-list)
   Sidebar Filter + Main View
   ========================================================================== */

.layout-list {
  display: grid;
  grid-template-columns: 240px 1fr;
  height: 100%;
}

.layout-list-sidebar {
  border-right: 1px solid var(--color-border);
  padding: var(--space-4);
  overflow-y: auto;
  background: var(--color-surface);
}

.layout-list-main {
  padding: var(--space-6);
  overflow-y: auto;
}

/* Three-column variant with preview panel */
.layout-list--with-preview {
  grid-template-columns: 240px 1fr 320px;
}

.layout-list-preview {
  border-left: 1px solid var(--color-border);
  padding: var(--space-4);
  overflow-y: auto;
  background: var(--color-surface);
}


/* ==========================================================================
   5. Dashboard Layout (.layout-dashboard)
   Bento Grid
   ========================================================================== */

.layout-dashboard {
  padding: var(--space-6);
}

.layout-dashboard-header {
  margin-bottom: var(--space-6);
}

.layout-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}


/* ==========================================================================
   6. Settings Layout (.layout-settings)
   Single column centered cards
   ========================================================================== */

.layout-settings {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-6);
}

.layout-settings .card + .card {
  margin-top: var(--space-6);
}


/* ==========================================================================
   7. Viewer Layout (.layout-viewer)
   Centered reading content
   ========================================================================== */

.layout-viewer {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-8);
}

.layout-viewer-meta {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}


/* ==========================================================================
   Responsive: Mobile (max-width: 768px)
   ========================================================================== */

@media (max-width: 768px) {

  /* --- Container --- */
  .container {
    padding: 0 var(--space-4);
  }

  /* --- 1. Main Framework: Sidebar becomes overlay --- */
  .layout-sidebar {
    width: var(--sidebar-collapsed-width);
    transform: translateX(calc(-1 * var(--sidebar-collapsed-width)));
    z-index: var(--z-modal);
  }

  .layout-sidebar.open {
    width: var(--sidebar-width);
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }

  .layout-sidebar.collapsed {
    transform: translateX(calc(-1 * var(--sidebar-collapsed-width)));
  }

  .layout-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--color-overlay);
    z-index: calc(var(--z-modal) - 1);
  }

  .layout-sidebar.open ~ .layout-sidebar-overlay {
    display: block;
  }

  .layout-content {
    margin-left: 0;
    padding: var(--space-4);
  }

  .layout-sidebar.collapsed ~ .layout-content {
    margin-left: 0;
  }

  /* --- 2. Login: Card full width --- */
  .layout-login-card {
    padding: var(--space-6);
  }

  /* --- 3. Tool: Panel folds below --- */
  .layout-workspace {
    flex-direction: column;
  }

  .layout-workspace-main {
    padding: var(--space-4);
  }

  .layout-workspace-panel {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--color-border);
    max-height: 40vh;
  }

  /* --- 4. List: Single column, sidebar becomes top filter --- */
  .layout-list {
    grid-template-columns: 1fr;
  }

  .layout-list-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    max-height: 200px;
  }

  .layout-list-main {
    padding: var(--space-4);
  }

  .layout-list--with-preview {
    grid-template-columns: 1fr;
  }

  .layout-list-preview {
    border-left: none;
    border-top: 1px solid var(--color-border);
    max-height: 40vh;
  }

  /* --- 5. Dashboard: Single column grid --- */
  .layout-dashboard {
    padding: var(--space-4);
  }

  .layout-dashboard-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  /* --- 6. Settings --- */
  .layout-settings {
    padding: var(--space-4);
  }

  /* --- 7. Viewer --- */
  .layout-viewer {
    padding: var(--space-4);
  }
}


/* ==========================================================================
   Responsive: Small Mobile (max-width: 320px)
   ========================================================================== */

@media (max-width: 320px) {

  .container {
    padding: 0 var(--space-3);
  }

  .layout-login {
    padding: var(--space-3);
  }

  .layout-login-card {
    padding: var(--space-5);
  }

  .layout-toolbar {
    padding: var(--space-3);
    gap: var(--space-2);
  }

  .layout-workspace-main {
    padding: var(--space-3);
  }

  .layout-list-main {
    padding: var(--space-3);
  }

  .layout-dashboard {
    padding: var(--space-3);
  }

  .layout-dashboard-grid {
    gap: var(--space-3);
  }

  .layout-settings {
    padding: var(--space-3);
  }

  .layout-viewer {
    padding: var(--space-3);
  }
}


/* ==========================================================================
   Responsive: Tablet (min-width: 769px) and (max-width: 1024px)
   ========================================================================== */

@media (min-width: 769px) and (max-width: 1024px) {

  /* Sidebar slightly narrower on tablets */
  .layout-sidebar {
    width: 200px;
  }

  .layout-content {
    margin-left: 200px;
  }

  /* Tool panel slightly narrower */
  .layout-workspace-panel {
    width: 260px;
  }

  /* List sidebar slightly narrower */
  .layout-list {
    grid-template-columns: 200px 1fr;
  }

  .layout-list--with-preview {
    grid-template-columns: 200px 1fr 280px;
  }
}


/* ==========================================================================
   Responsive: Wide (min-width: 1440px)
   ========================================================================== */

@media (min-width: 1440px) {

  /* Slightly more generous content spacing on wide screens */
  .layout-content {
    padding: var(--space-8);
  }

  .layout-dashboard {
    padding: var(--space-8);
  }

  .layout-workspace-panel {
    width: 360px;
  }

  .layout-list--with-preview {
    grid-template-columns: 260px 1fr 360px;
  }

  .layout-viewer {
    padding: var(--space-10);
  }
}