/**
 * LAYOUT.CSS - Page Structure, Containers, Grid Systems
 * Page-level layout and structural components
 * 
 * @package StileSalentino
 * @version 2.1.0
 */

/* =============================================================
   CONTAINER SYSTEM
   ============================================================= */

.container {
    max-width: var(--container-max-width, 1200px);
    margin: 0 auto;
    padding-left: var(--container-padding, 20px);
    padding-right: var(--container-padding, 20px);
    width: 100%;
}

.container--narrow {
    max-width: var(--container-narrow, 800px);
}

.container--wide {
    max-width: var(--container-wide, 1400px);
}

.container--full {
    max-width: none;
    padding-left: 0;
    padding-right: 0;
}

.container--padding-none {
    padding-left: 0;
    padding-right: 0;
}

.container--padding-small {
    padding-left: var(--space-sm, 10px);
    padding-right: var(--space-sm, 10px);
}

.container--padding-large {
    padding-left: var(--space-xl, 40px);
    padding-right: var(--space-xl, 40px);
}

.container--left {
    margin-left: 0;
    margin-right: auto;
}

.container--right {
    margin-left: auto;
    margin-right: 0;
}

/* =============================================================
   GRID SYSTEMS
   ============================================================= */

.grid {
    display: grid;
    gap: var(--grid-gap, 20px);
}

.grid--cols-1 { grid-template-columns: 1fr; }
.grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid--cols-5 { grid-template-columns: repeat(5, 1fr); }
.grid--cols-6 { grid-template-columns: repeat(6, 1fr); }

.grid--responsive {
    grid-template-columns: repeat(auto-fit, minmax(var(--grid-min-width, 300px), 1fr));
}

.grid--auto {
    grid-template-columns: repeat(auto-fit, minmax(var(--grid-min-width, 300px), 1fr));
}

.grid--equal-height > * {
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Grid Gap Variations */
.grid--gap-none { gap: 0; }
.grid--gap-small { gap: var(--space-sm, 12px); }
.grid--gap-large { gap: var(--space-lg, 32px); }
.grid--gap-xl { gap: var(--space-xl, 48px); }

/* =============================================================
   FLEXBOX UTILITIES
   ============================================================= */

.flex {
    display: flex;
}

.flex--column {
    flex-direction: column;
}

.flex--row-reverse {
    flex-direction: row-reverse;
}

.flex--column-reverse {
    flex-direction: column-reverse;
}

.flex--wrap {
    flex-wrap: wrap;
}

.flex--nowrap {
    flex-wrap: nowrap;
}

.flex--wrap-reverse {
    flex-wrap: wrap-reverse;
}

/* Justify Content */
.flex--justify-start { justify-content: flex-start; }
.flex--justify-center { justify-content: center; }
.flex--justify-end { justify-content: flex-end; }
.flex--justify-between { justify-content: space-between; }
.flex--justify-around { justify-content: space-around; }
.flex--justify-evenly { justify-content: space-evenly; }

/* Align Items */
.flex--align-start { align-items: flex-start; }
.flex--align-center { align-items: center; }
.flex--align-end { align-items: flex-end; }
.flex--align-stretch { align-items: stretch; }
.flex--align-baseline { align-items: baseline; }

/* Gap for Flexbox */
.flex--gap-none { gap: 0; }
.flex--gap-small { gap: var(--space-sm, 12px); }
.flex--gap-default { gap: var(--space-md, 16px); }
.flex--gap-medium { gap: var(--space-lg, 20px); }
.flex--gap-large { gap: var(--space-xl, 32px); }

/* =============================================================
   SECTION LAYOUTS
   ============================================================= */

.section {
    padding-top: var(--section-padding-y, 40px);
    padding-bottom: var(--section-padding-y, 40px);
}

.section--small {
    padding-top: var(--section-padding-small, 20px);
    padding-bottom: var(--section-padding-small, 20px);
}

.section--large {
    padding-top: var(--section-padding-large, 80px);
    padding-bottom: var(--section-padding-large, 80px);
}

.section--no-padding-top { padding-top: 0; }
.section--no-padding-bottom { padding-bottom: 0; }

/* Section Backgrounds */
.section--bg-transparent { background: transparent; }
.section--bg-light { background: var(--color-background, #f9fafb); }
.section--bg-dark { 
    background: var(--color-dark, #1f2937); 
    color: var(--text-on-dark, #ffffff);
}
.section--bg-primary { 
    background: var(--color-primary, #2563eb); 
    color: var(--text-on-primary, #ffffff);
}
.section--bg-secondary { 
    background: var(--color-secondary, #64748b); 
    color: var(--text-on-secondary, #ffffff);
}

/* =============================================================
   COLUMN SYSTEM
   ============================================================= */

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

/* Column Spans (for CSS Grid contexts) */
.column--span-1 { grid-column: span 1; }
.column--span-2 { grid-column: span 2; }
.column--span-3 { grid-column: span 3; }
.column--span-4 { grid-column: span 4; }
.column--span-5 { grid-column: span 5; }
.column--span-6 { grid-column: span 6; }
.column--span-full { grid-column: 1 / -1; }

/* Column Offsets */
.column--offset-1 { grid-column-start: 2; }
.column--offset-2 { grid-column-start: 3; }
.column--offset-3 { grid-column-start: 4; }

/* Column Alignment */
.column--align-start { align-self: flex-start; }
.column--align-center { align-self: center; }
.column--align-end { align-self: flex-end; }
.column--align-stretch { align-self: stretch; }

.column--justify-start { justify-content: flex-start; }
.column--justify-center { justify-content: center; }
.column--justify-end { justify-content: flex-end; }
.column--justify-between { justify-content: space-between; }

/* =============================================================
   SPACING UTILITIES
   ============================================================= */

/* Margin Utilities */
.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mr-0 { margin-right: 0; }
.mb-0 { margin-bottom: 0; }
.ml-0 { margin-left: 0; }
.mx-0 { margin-left: 0; margin-right: 0; }
.my-0 { margin-top: 0; margin-bottom: 0; }

.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

/* Dynamic spacing using CSS variables */
.m-xs { margin: var(--space-xs, 8px); }
.m-sm { margin: var(--space-sm, 12px); }
.m-md { margin: var(--space-md, 16px); }
.m-lg { margin: var(--space-lg, 24px); }
.m-xl { margin: var(--space-xl, 32px); }
.m-2xl { margin: var(--space-2xl, 48px); }
.m-3xl { margin: var(--space-3xl, 64px); }

.mt-xs { margin-top: var(--space-xs, 8px); }
.mt-sm { margin-top: var(--space-sm, 12px); }
.mt-md { margin-top: var(--space-md, 16px); }
.mt-lg { margin-top: var(--space-lg, 24px); }
.mt-xl { margin-top: var(--space-xl, 32px); }

.mb-xs { margin-bottom: var(--space-xs, 8px); }
.mb-sm { margin-bottom: var(--space-sm, 12px); }
.mb-md { margin-bottom: var(--space-md, 16px); }
.mb-lg { margin-bottom: var(--space-lg, 24px); }
.mb-xl { margin-bottom: var(--space-xl, 32px); }

/* Padding Utilities */
.p-0 { padding: 0; }
.p-xs { padding: var(--space-xs, 8px); }
.p-sm { padding: var(--space-sm, 12px); }
.p-md { padding: var(--space-md, 16px); }
.p-lg { padding: var(--space-lg, 24px); }
.p-xl { padding: var(--space-xl, 32px); }

.pt-0 { padding-top: 0; }
.pt-xs { padding-top: var(--space-xs, 8px); }
.pt-sm { padding-top: var(--space-sm, 12px); }
.pt-md { padding-top: var(--space-md, 16px); }
.pt-lg { padding-top: var(--space-lg, 24px); }
.pt-xl { padding-top: var(--space-xl, 32px); }

.pb-0 { padding-bottom: 0; }
.pb-xs { padding-bottom: var(--space-xs, 8px); }
.pb-sm { padding-bottom: var(--space-sm, 12px); }
.pb-md { padding-bottom: var(--space-md, 16px); }
.pb-lg { padding-bottom: var(--space-lg, 24px); }
.pb-xl { padding-bottom: var(--space-xl, 32px); }

.px-0 { padding-left: 0; padding-right: 0; }
.px-xs { padding-left: var(--space-xs, 8px); padding-right: var(--space-xs, 8px); }
.px-sm { padding-left: var(--space-sm, 12px); padding-right: var(--space-sm, 12px); }
.px-md { padding-left: var(--space-md, 16px); padding-right: var(--space-md, 16px); }
.px-lg { padding-left: var(--space-lg, 24px); padding-right: var(--space-lg, 24px); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-xs { padding-top: var(--space-xs, 8px); padding-bottom: var(--space-xs, 8px); }
.py-sm { padding-top: var(--space-sm, 12px); padding-bottom: var(--space-sm, 12px); }
.py-md { padding-top: var(--space-md, 16px); padding-bottom: var(--space-md, 16px); }
.py-lg { padding-top: var(--space-lg, 24px); padding-bottom: var(--space-lg, 24px); }

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

@media (max-width: 767px) {
    .container {
        padding-left: var(--container-padding-mobile, 15px);
        padding-right: var(--container-padding-mobile, 15px);
    }
    
    .container--padding-large {
        padding-left: var(--space-md, 20px);
        padding-right: var(--space-md, 20px);
    }
    
    .grid--cols-2,
    .grid--cols-3,
    .grid--cols-4,
    .grid--cols-5,
    .grid--cols-6 {
        grid-template-columns: 1fr;
    }
    
    .flex--responsive {
        flex-direction: column;
    }
    
    .section {
        padding-top: var(--section-padding-mobile, 30px);
        padding-bottom: var(--section-padding-mobile, 30px);
    }
    
    .section--large {
        padding-top: var(--section-padding-large-mobile, 50px);
        padding-bottom: var(--section-padding-large-mobile, 50px);
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .grid--cols-4,
    .grid--cols-5,
    .grid--cols-6 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* =============================================================
   POSITIONING UTILITIES
   ============================================================= */

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.static { position: static; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }

/* Z-Index Scale */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }
.z-auto { z-index: auto; }

/* =============================================================
   DISPLAY UTILITIES
   ============================================================= */

.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.inline-grid { display: inline-grid; }
.table { display: table; }
.table-cell { display: table-cell; }
.hidden { display: none; }

/* =============================================================
   OVERFLOW UTILITIES
   ============================================================= */

.overflow-hidden { overflow: hidden; }
.overflow-visible { overflow: visible; }
.overflow-scroll { overflow: scroll; }
.overflow-auto { overflow: auto; }

.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-hidden { overflow-y: hidden; }
.overflow-x-scroll { overflow-x: scroll; }
.overflow-y-scroll { overflow-y: scroll; }

/* =============================================================
   SPACER COMPONENT
   ============================================================= */

.spacer {
    width: 100%;
    height: var(--space-lg, 24px);
    flex-shrink: 0;
}

.spacer--xs { height: var(--space-xs, 8px); }
.spacer--sm { height: var(--space-sm, 12px); }
.spacer--md { height: var(--space-md, 16px); }
.spacer--lg { height: var(--space-lg, 24px); }
.spacer--xl { height: var(--space-xl, 32px); }
.spacer--2xl { height: var(--space-2xl, 48px); }
.spacer--3xl { height: var(--space-3xl, 64px); }

.spacer--responsive {
    height: var(--space-xl, 32px);
}

@media (max-width: 768px) {
    .spacer--responsive {
        height: var(--space-lg, 20px);
    }
}

/* =============================================================
   DIVIDER COMPONENT
   ============================================================= */

.divider {
    border: none;
    height: var(--divider-height, 1px);
    background: var(--divider-color, #e5e7eb);
    margin: var(--divider-margin, 20px) 0;
    width: 100%;
}

.divider--solid { border-top: var(--divider-height, 1px) solid var(--divider-color, #e5e7eb); }
.divider--dashed { border-top: var(--divider-height, 1px) dashed var(--divider-color, #e5e7eb); }
.divider--dotted { border-top: var(--divider-height, 1px) dotted var(--divider-color, #e5e7eb); }
.divider--double { border-top: 3px double var(--divider-color, #e5e7eb); }

.divider--color-primary { 
    background: var(--color-primary, #2563eb);
    border-color: var(--color-primary, #2563eb);
}

.divider--color-secondary { 
    background: var(--color-secondary, #64748b);
    border-color: var(--color-secondary, #64748b);
}

.divider--color-muted { 
    background: var(--color-muted, #9ca3af);
    border-color: var(--color-muted, #9ca3af);
}

/* Divider Alignment */
.divider--left {
    margin-left: 0;
    margin-right: auto;
}

.divider--right {
    margin-left: auto;
    margin-right: 0;
}

.divider--center {
    margin-left: auto;
    margin-right: auto;
}

/* Divider Spacing */
.divider--my-none { margin-top: 0; margin-bottom: 0; }
.divider--my-small { margin-top: var(--space-sm, 10px); margin-bottom: var(--space-sm, 10px); }
.divider--my-large { margin-top: var(--space-xl, 40px); margin-bottom: var(--space-xl, 40px); }