/* Layout Structure */

/* Main App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

.main-content {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    background-color: var(--color-background);
}

/* ============================================
   PAGE HEADER
   ============================================ */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2xl) var(--spacing-3xl);
    background-color: var(--color-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    flex-shrink: 0;
    gap: var(--spacing-2xl);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.brand-logo {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
}

.brand-name {
    font-size: 24px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-dark);
    letter-spacing: -0.02em;
    line-height: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

/* Content Wrapper */
.content-wrapper {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-xl) var(--spacing-3xl);
}

/* Custom Scrollbar */
.content-wrapper::-webkit-scrollbar {
    width: 8px;
}

.content-wrapper::-webkit-scrollbar-track {
    background: var(--color-scrollbar-track);
}

.content-wrapper::-webkit-scrollbar-thumb {
    background: var(--color-scrollbar-thumb);
    border-radius: 4px;
}

.content-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--color-scrollbar-hover);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}


/* ============================================
   RESPONSIVE LAYOUT
   ============================================ */

/* Desktop Large (1440px+) - 4 columns */
@media (min-width: 1440px) {
    .cards-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Desktop Medium (1200px - 1439px) - 3 columns */
@media (min-width: 1200px) and (max-width: 1439px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet (768px - 1199px) - 3 columns, adjusted spacing */
@media (min-width: 768px) and (max-width: 1199px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }

    .page-header {
        padding: var(--spacing-xl) var(--spacing-xl);
    }

    .content-wrapper {
        padding: var(--spacing-lg) var(--spacing-xl);
    }
}

/* Tablet Small (768px - 991px) - Adjust header */
@media (min-width: 768px) and (max-width: 991px) {
    .page-header {
        flex-wrap: wrap;
    }

    .search-container {
        order: 3;
        flex-basis: 100%;
    }

    .header-actions {
        width: auto;
    }
}