/* ==============================================
   LAYOUT - App Structure & Grid
   ============================================== */

/* ---- App Header ---- */
.app-header {
    background: #2f2f2f;
    color: var(--text-inverse);
    position: static;
    z-index: 100;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.14);
    border-bottom: 2px solid rgba(234, 148, 54, 0.55);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px var(--space-xl);
    max-width: 1600px;
    margin: 0 auto;
    gap: var(--space-lg);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.header-logo img {
    height: 44px;
    width: auto;
    filter: brightness(0) invert(1);
}

.header-company-name {
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: 0.5px;
    color: #fff;
}

.header-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: rgba(255,255,255,0.92);
    text-align: center;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(255,255,255,0.14);
    border: 1px solid rgba(255,255,255,0.24);
}

.header-title-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex: 1;
}

.header-subtitle {
    color: rgba(255,255,255,0.78);
    font-size: 11px;
    letter-spacing: 0.25px;
    text-align: center;
}

.app-version-badge {
    display: inline-block;
    margin-inline-start: 6px;
    padding: 1px 6px;
    border-radius: 999px;
    background: rgba(234,148,54,0.22);
    border: 1px solid rgba(234,148,54,0.4);
    color: rgba(234,148,54,0.9);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.3px;
    vertical-align: middle;
}

.header-actions {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

/* ---- Main Layout ---- */
.app-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 20px;
    padding: 22px;
    max-width: 1600px;
    margin: 0 auto;
    align-items: start;
}

.app-main.catalog-hidden {
    grid-template-columns: minmax(0, 1fr);
}

.app-main.catalog-hidden .panel-catalog {
    display: none;
}

/* ---- Panels ---- */
.panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.panel-builder {
    min-width: 0;
}

.panel-catalog {
    position: sticky;
    top: 16px;
    max-height: calc(100vh - 106px);
    overflow-y: auto;
    background: #ffffff;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    padding: 0;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.catalog-sticky-top {
    position: sticky;
    top: 0;
    z-index: 2;
    background: #ffffff;
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    border-bottom: 1px solid var(--border-color);
    padding: 14px 14px 0;
}

/* ---- Section Cards ---- */
.section-card {
    background: #ffffff;
    border-radius: var(--border-radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 3px;
    background: rgba(234, 148, 54, 0.7);
    opacity: 0.65;
}

.section-helper-text {
    margin-top: 6px;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.section-actions {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.products-meta {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    color: #374151;
    border: 1px solid var(--border-color);
    background: #f7f6f4;
}

.section-collapsible .section-header {
    margin-bottom: 0;
}

.section-collapsible .collapsible-content {
    margin-top: 12px;
}

.section-collapsible.collapsed .collapsible-content {
    display: none;
}

.section-title {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--brand-primary);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.section-header .section-title {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

/* ---- Form Grid ---- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group--full {
    grid-column: 1 / -1;
}

.financials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 18px;
}

/* ---- Actions Card ---- */
.actions-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.actions-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* ---- Catalog Layout ---- */
.catalog-header {
    margin-bottom: 10px;
}

.catalog-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.catalog-header h2 {
    font-size: 16px;
    color: var(--brand-primary);
    margin: 0;
}

.catalog-count {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-inverse);
    background: var(--brand-primary);
    border-radius: 999px;
    padding: 1px 8px;
    line-height: 1.6;
    opacity: 0.85;
}

.catalog-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.catalog-search-icon {
    position: absolute;
    right: 10px;
    width: 15px;
    height: 15px;
    color: var(--text-muted);
    pointer-events: none;
    flex-shrink: 0;
}

.catalog-search-wrap input {
    width: 100%;
    padding-right: 32px;
}

.catalog-categories {
    display: flex;
    flex-wrap: nowrap;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: transparent transparent;
}

.catalog-categories:hover {
    scrollbar-color: rgba(234,148,54,0.35) transparent;
}

.catalog-categories::-webkit-scrollbar {
    height: 3px;
}

.catalog-categories::-webkit-scrollbar-track {
    background: transparent;
}

.catalog-categories::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 999px;
    transition: background 0.2s;
}

.catalog-categories:hover::-webkit-scrollbar-thumb {
    background: rgba(234,148,54,0.35);
}

.catalog-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 12px 14px 14px;
}

/* ---- Responsive ---- */
@media (max-width: 1200px) {
    .app-main {
        grid-template-columns: 1fr;
        padding: 16px;
    }
    .panel-catalog {
        position: static;
        max-height: none;
        order: -1;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 10px 12px;
        gap: 10px;
    }

    .header-company-name {
        font-size: 18px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .financials-grid {
        grid-template-columns: 1fr;
    }

    .header-title {
        display: none;
    }

    .header-subtitle {
        display: none;
    }

    .section-card {
        padding: 14px;
    }

    .actions-card {
        justify-content: stretch;
        flex-direction: column;
        align-items: stretch;
    }
    .actions-group {
        justify-content: stretch;
    }
}