/* ThreadsTraffic Layout & Bento Grid Architecture
   Complies with DESIGN_SYSTEM.md §1, §5.2 and TASK_PLAN.md §3.12 */

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

/* App Header & Fixed Navigation */
.app-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: var(--header-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--bento-border);
    padding: 0.875rem 2rem;
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-shrink: 0;
}

.brand-badge {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: var(--fw-bold);
    font-size: var(--fs-md);
    letter-spacing: -0.02em;
    color: var(--text-white);
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    padding: 0.3rem 0.65rem 0.3rem 0.35rem;
    margin-left: -0.35rem;
    border-radius: var(--radius-control);
    background: transparent;
    border: none;
    transition: background var(--motion-base) var(--ease-out), transform 0.12s var(--ease-out);
}

.brand-badge:hover {
    background: var(--overlay-white-04);
}

.brand-badge:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px var(--brand-ring);
}

.brand-badge:active {
    transform: scale(0.97);
}

.brand-logo-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-control);
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-black);
    font-weight: var(--fw-black);
    box-shadow: 0 0 16px var(--overlay-lime-35);
}

.brand-logo-icon svg {
    width: 22px;
    height: 22px;
}

.brand-name {
    font-weight: var(--fw-bold);
    font-size: var(--fs-md);
    letter-spacing: -0.02em;
}

.brand-traffic {
    font-weight: 300;
    letter-spacing: -0.01em;
}

.brand-divider {
    width: 1px;
    height: 22px;
    background: var(--bento-border);
}

/* Dynamic Breadcrumbs */
#page-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--fs-base);
}

.breadcrumb-item {
    color: var(--text-zinc-400);
    text-decoration: none;
    cursor: pointer;
    transition: color var(--motion-fast) var(--ease-out);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: none;
    background: transparent;
    font-size: var(--fs-base);
    font-family: inherit;
}

.breadcrumb-item:hover {
    color: var(--text-white);
}

.breadcrumb-separator {
    color: var(--text-zinc-600);
    user-select: none;
    font-size: var(--fs-sm);
}

.breadcrumb-current {
    font-weight: var(--fw-bold);
    color: var(--text-white);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    flex-shrink: 0;
}

.header-project-wrap {
    min-width: 200px;
}

/* ==========================================================================
   BENTO GRID ARCHITECTURE (7:5 Proportions)
   ========================================================================== */
.bento-grid {
    display: grid;
    gap: var(--bento-gap);
    grid-template-columns: repeat(12, minmax(0, 1fr));
    max-width: var(--container-max);
    margin-inline: auto;
    margin-bottom: 2rem;
}

/* Backward-compatible alias for existing markup */
.bento-grid-overview {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--bento-gap);
    margin-bottom: 2rem;
}

/* Column Spans */
.bento-span-12 {
    grid-column: span 12;
}

.bento-span-8 {
    grid-column: span 8;
}

.bento-span-7 {
    grid-column: span 7;
}

.bento-span-6 {
    grid-column: span 6;
}

.bento-span-5 {
    grid-column: span 5;
}

.bento-span-4 {
    grid-column: span 4;
}

.bento-span-3 {
    grid-column: span 3;
}

/* Bento Tile Surface */
.bento-tile {
    background: var(--bento-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--bento-border);
    border-radius: var(--radius-bento);
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: border-color var(--motion-base) var(--ease-out), box-shadow var(--motion-base) var(--ease-out);
}

.bento-tile:hover {
    border-color: var(--bento-border-hover);
}

/* Overview Bento Tiles 7:5 proportions */
.bento-chart-tile {
    grid-column: span 7;
    min-height: 380px;
}

.bento-funnel-tile {
    grid-column: span 5;
    min-height: 380px;
}

/* Category Badge Surface */
.category-badge {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-pill);
    background: var(--badge-surface);
    border: 1px solid var(--bento-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.category-badge svg {
    width: 18px;
    height: 18px;
}

/* Views & Tab Content */
.view-tab {
    display: none;
    opacity: 0;
    transition: opacity var(--motion-base) var(--ease-out);
}

.view-tab.active {
    display: block;
    opacity: 1;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (1024px & 640px)
   ========================================================================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 1rem;
    }

    .app-header {
        padding: 0.75rem 1rem;
    }

    .bento-grid,
    .bento-grid-overview {
        grid-template-columns: repeat(6, 1fr);
        gap: var(--space-4);
    }

    .bento-span-12 {
        grid-column: span 6;
    }

    .bento-span-8,
    .bento-span-7,
    .bento-span-5,
    .bento-chart-tile,
    .bento-funnel-tile {
        grid-column: span 6;
    }

    .bento-span-4,
    .bento-span-3 {
        grid-column: span 3;
    }
}