/**
 * Professional Layout Styles
 *
 * @package NEWTIV
 * @since 1.0.0
 */

/* ============================================
   Site Structure
   ============================================ */
.site {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-header {
    position: relative;
    z-index: 1000;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-sm);
}

.site-main {
    flex: 1;
    padding: var(--spacing-2xl) 0;
    min-height: 60vh;
}

.site-footer {
    margin-top: auto;
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

/* ============================================
   Content Layout
   ============================================ */
.content-area {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.content-area.has-sidebar {
    grid-template-columns: 1fr 300px;
}

.content-area.sidebar-left {
    grid-template-columns: 300px 1fr;
}

.main-content {
    min-width: 0;
}

.sidebar {
    min-width: 0;
}

/* ============================================
   Entry Content
   ============================================ */
.entry-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.entry-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

.entry-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.entry-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-gray-700);
}

.entry-content > * {
    margin-bottom: var(--spacing-md);
}

.entry-content > *:last-child {
    margin-bottom: 0;
}

.entry-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
    margin-bottom: var(--spacing-3xl);
    text-align: center;
}

.page-header .page-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.page-header .page-description {
    font-size: 1.125rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumbs {
    padding: var(--spacing-md) 0;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
}

.breadcrumbs a {
    color: var(--color-gray-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
    color: var(--color-primary);
}

.breadcrumbs .separator {
    margin: 0 var(--spacing-sm);
    color: var(--color-gray-400);
}

.breadcrumbs .current {
    color: var(--color-gray-700);
    font-weight: 500;
}

/* ============================================
   Responsive Layout
   ============================================ */
@media (max-width: 1024px) {
    .content-area.has-sidebar,
    .content-area.sidebar-left {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .site-main {
        padding: var(--spacing-lg) 0;
    }
    
    .entry-content {
        font-size: 1rem;
    }
    
    .page-header {
        padding: var(--spacing-xl) 0;
        margin-bottom: var(--spacing-xl);
    }
}