/* ═══════════════════════════════════════════════════════════════
   03-layout.css — Application Shell & Page Layout
   ─────────────────────────────────────────────────────────────
   Defines the top-level grid that positions the sidebar,
   top-bar, and main content area. Also provides reusable
   page-well and card containers used across many pages.

   Sections:
     • .zimam-app           (viewport-locked flex column)
     • .zimam-layout-grid   (CSS Grid: main | sidebar, RTL)
     • .zimam-main-content  (scrollable content pane)
     • .zimam-page-well     (max-width content wrapper + padding)
     • .zimam-card           (surface card with shadow & radius)
     • Desktop scrollbar overrides for the content pane

   Depends on: 01-tokens.css, 02-base.css.
   Consumers: MainLayout.razor, AuthLayout.razor.
   ═══════════════════════════════════════════════════════════════ */

.zimam-app {
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Grid: main | sidebar (RTL) */
.zimam-layout-grid {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    grid-template-areas: "main";
    height: 100vh;
    width: 100%;
    overflow: hidden;
    background: var(--color-bg);
}

/* Mobile: sidebar fixed overlay */
.zimam-sidebar {
    grid-column: 1;
    grid-row: 1;
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    z-index: var(--z-sidebar);
    width: var(--zimam-sidebar-width);
    transition: transform var(--duration-slow) var(--ease-out);
}

@media (min-width: 1024px) {
    :root {
        --zimam-header-height: 4rem;
    }

    .zimam-layout-grid {
        grid-template-columns: var(--zimam-sidebar-width) 1fr;
        grid-template-areas: "sidebar main";
        transition: grid-template-columns 300ms cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Disable transition during active resize for performance */
    body.is-resizing .zimam-layout-grid {
        transition: none !important;
    }

    .zimam-layout-grid.zimam-layout--collapsed {
        grid-template-columns: var(--zimam-sidebar-collapsed-width) 1fr;
    }

    .zimam-main-area {
        grid-area: main;
    }

    .zimam-sidebar {
        grid-area: sidebar;
        grid-column: auto;
        grid-row: auto;
        position: relative;
        inset: auto;
        z-index: auto;
        width: auto;
        transition: none;
        overflow: visible; /* Allow peek overlay to extend beyond grid cell */
    }
}

/* Header — fixed height from token */
.zimam-header {
    height: var(--zimam-header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-inline: 1rem;
    flex-shrink: 0;
    position: relative;
    z-index: 30;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.zimam-header__leading,
.zimam-header__actions,
.zimam-header__title-area {
    display: flex;
    align-items: center;
}

.zimam-header__leading,
.zimam-header__title-area {
    min-width: 0;
}

.zimam-header__leading {
    gap: 0.75rem;
    flex: 1;
}

.zimam-header__title-area {
    flex: 1;
}

.zimam-header__title {
    margin: 0;
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    color: var(--color-text-strong);
    line-height: var(--lh-tight);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.zimam-header__menu-button,
.zimam-header__notification-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: background-color var(--duration-fast) var(--ease-default),
                color var(--duration-fast) var(--ease-default),
                box-shadow var(--duration-fast) var(--ease-default);
}

.zimam-header__menu-button {
    width: 2.5rem;
    height: 2.5rem;
    margin-inline-start: -0.5rem;
    border-radius: var(--radius-lg);
}

.zimam-header__notification-button {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 9999px;
    position: relative;
}

.zimam-header__menu-button:hover,
.zimam-header__notification-button:hover {
    background: var(--color-bg-subtle);
}

.zimam-header__menu-button:hover {
    color: var(--color-text-secondary);
}

.zimam-header__notification-button:hover {
    color: var(--color-text);
}

.zimam-header__menu-button:focus-visible,
.zimam-header__notification-button:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-offset);
}

.zimam-header__actions {
    gap: 0.75rem;
}

.zimam-header__notification-dot {
    position: absolute;
    top: 0.5rem;
    inset-inline-end: 0.5rem;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--color-error-text);
    border: 1px solid var(--color-surface);
}

.zimam-header__notification-badge {
    position: absolute;
    top: 0.125rem;
    inset-inline-end: 0;
    min-width: 1.125rem;
    height: 1.125rem;
    padding: 0 0.25rem;
    border-radius: 9999px;
    background: var(--color-error-text);
    color: #fff;
    font-size: 0.625rem;
    font-weight: 700;
    line-height: 1.125rem;
    text-align: center;
    border: 1.5px solid var(--color-surface);
    pointer-events: none;
}

.zimam-header__avatar {
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    line-height: 1;
}

@media (min-width: 768px) {
    .zimam-header {
        padding-inline: 1.5rem;
    }

    .zimam-footer {
        padding-inline: 1.5rem;
    }

    .zimam-header__actions {
        gap: 1rem;
    }

    .zimam-header__avatar {
        width: 2.25rem;
        height: 2.25rem;
    }

    .zimam-header__title {
        font-size: var(--text-md);
    }
}

@media (min-width: 1024px) {
    .zimam-header__menu-button {
        display: none;
    }
}

/* Icon — neutral display, no background bleed */
.zimam-icon {
    background: transparent;
    border-radius: 0;
}

/* Main area: header + content + footer */
.zimam-main-area {
    grid-area: main;
    min-width: 0;
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100vh;
    overflow: hidden;
    background: transparent;
    position: relative;
}

    .zimam-header__title-area:has(.zimam-breadcrumbs) .zimam-header__title {
        display: none;
    }

/* Scrollable content area */
.zimam-main {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    display: flex;
    flex-direction: column;
}

.zimam-footer {
    flex-shrink: 0;
    padding-block: 0.75rem;
    padding-inline: 1rem;
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
}

.zimam-footer__content {
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text-faint);
}

/* Page well */
.zimam-page {
    width: 100%;
    max-width: 82rem;
    margin-inline: auto;
    padding: var(--space-page-y) var(--space-page-x);
    box-sizing: border-box;
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

@media (min-width: 1024px) {
    .zimam-page {
        --space-page-x: 2.25rem;
        --space-page-y: 2.5rem;
    }
}

.zimam-page.zimam-page--full {
    width: auto;
    max-width: none;
    background: var(--color-surface);
    overflow: hidden;
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0;
}

.zimam-page-content-inside {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 15px 24px;
}

.zimam-section+.zimam-section {
    margin-top: var(--space-section);
}

/* Cards */
.zimam-card {
    padding: var(--space-card);
    border-radius: var(--radius-card-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-floating);
    overflow: hidden;
}

.zimam-card-header {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--color-border-light);
}

.zimam-card-title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: var(--fw-semibold);
    color: var(--color-text-strong);
}

.zimam-card-body {
    color: var(--color-text-secondary);
    font-size: var(--text-md);
    line-height: var(--lh-relaxed);
}

@media (min-width: 1024px) {
    .zimam-card {
        padding: var(--space-card-lg);
        border-radius: var(--radius-card-lg);
    }
}