/* ==================================================
   LAYOUT SYSTEM
   12-Column Grid + Container System
   ================================================== */

/* ========================================
   CONTAINER SYSTEM
   Max-width containers for content
   ======================================== */

.container-full {
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
}

.container-wide {
    max-width: var(--container-wide);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
}

.container-standard {
    max-width: var(--container-standard);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
}

.container-narrow {
    max-width: var(--container-narrow);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
}

.container-tight {
    max-width: var(--container-tight);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
}

/* ========================================
   12-COLUMN GRID SYSTEM
   Bootstrap-like grid with CSS Grid
   ======================================== */

.grid-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--grid-gap);
}

.grid-12-large {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--grid-gap-large);
}

.grid-12-small {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--grid-gap-small);
}

/* Column Spans */
.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-9 { grid-column: span 9; }
.col-span-10 { grid-column: span 10; }
.col-span-11 { grid-column: span 11; }
.col-span-12 { grid-column: span 12; }

/* Column Start Positions */
.col-start-1 { grid-column-start: 1; }
.col-start-2 { grid-column-start: 2; }
.col-start-3 { grid-column-start: 3; }
.col-start-4 { grid-column-start: 4; }
.col-start-5 { grid-column-start: 5; }
.col-start-6 { grid-column-start: 6; }
.col-start-7 { grid-column-start: 7; }
.col-start-8 { grid-column-start: 8; }
.col-start-9 { grid-column-start: 9; }
.col-start-10 { grid-column-start: 10; }
.col-start-11 { grid-column-start: 11; }
.col-start-12 { grid-column-start: 12; }

/* ========================================
   COMMON GRID PATTERNS
   Pre-configured layouts
   ======================================== */

/* 2 Columns */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--grid-gap);
}

/* 3 Columns */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--grid-gap);
}

/* 4 Columns */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--grid-gap);
}

/* Auto-fit (Responsive columns) */
.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--grid-gap);
}

.grid-auto-fit-small {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--grid-gap);
}

.grid-auto-fit-large {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--grid-gap);
}

/* ========================================
   FLEXBOX UTILITIES
   Quick flex layouts
   ======================================== */

.flex {
    display: flex;
}

.flex-inline {
    display: inline-flex;
}

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

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

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

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

/* Justify Content */
.justify-start {
    justify-content: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.justify-between {
    justify-content: space-between;
}

.justify-around {
    justify-content: space-around;
}

.justify-evenly {
    justify-content: space-evenly;
}

/* Align Items */
.items-start {
    align-items: flex-start;
}

.items-center {
    align-items: center;
}

.items-end {
    align-items: flex-end;
}

.items-stretch {
    align-items: stretch;
}

.items-baseline {
    align-items: baseline;
}

/* Align Self */
.self-start {
    align-self: flex-start;
}

.self-center {
    align-self: center;
}

.self-end {
    align-self: flex-end;
}

.self-stretch {
    align-self: stretch;
}

/* Flex Grow/Shrink */
.flex-1 {
    flex: 1 1 0%;
}

.flex-auto {
    flex: 1 1 auto;
}

.flex-none {
    flex: none;
}

/* ========================================
   GAP UTILITIES
   Spacing between grid/flex items
   ======================================== */

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }
.gap-3xl { gap: var(--space-3xl); }

/* Row/Column Specific Gaps */
.gap-x-sm { column-gap: var(--space-sm); }
.gap-x-md { column-gap: var(--space-md); }
.gap-x-lg { column-gap: var(--space-lg); }
.gap-x-xl { column-gap: var(--space-xl); }

.gap-y-sm { row-gap: var(--space-sm); }
.gap-y-md { row-gap: var(--space-md); }
.gap-y-lg { row-gap: var(--space-lg); }
.gap-y-xl { row-gap: var(--space-xl); }

/* ========================================
   SPACING UTILITIES
   Margin & Padding
   ======================================== */

/* Margin All Sides */
.m-0 { margin: 0; }
.m-xs { margin: var(--space-xs); }
.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }
.m-xl { margin: var(--space-xl); }
.m-2xl { margin: var(--space-2xl); }
.m-3xl { margin: var(--space-3xl); }
.m-auto { margin: auto; }

/* Margin Top */
.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }
.mt-auto { margin-top: auto; }

/* Margin Bottom */
.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }
.mb-auto { margin-bottom: auto; }

/* Margin Left */
.ml-0 { margin-left: 0; }
.ml-xs { margin-left: var(--space-xs); }
.ml-sm { margin-left: var(--space-sm); }
.ml-md { margin-left: var(--space-md); }
.ml-lg { margin-left: var(--space-lg); }
.ml-xl { margin-left: var(--space-xl); }
.ml-auto { margin-left: auto; }

/* Margin Right */
.mr-0 { margin-right: 0; }
.mr-xs { margin-right: var(--space-xs); }
.mr-sm { margin-right: var(--space-sm); }
.mr-md { margin-right: var(--space-md); }
.mr-lg { margin-right: var(--space-lg); }
.mr-xl { margin-right: var(--space-xl); }
.mr-auto { margin-right: auto; }

/* Margin X-axis (left + right) */
.mx-auto { margin-left: auto; margin-right: auto; }
.mx-0 { margin-left: 0; margin-right: 0; }
.mx-md { margin-left: var(--space-md); margin-right: var(--space-md); }
.mx-lg { margin-left: var(--space-lg); margin-right: var(--space-lg); }
.mx-xl { margin-left: var(--space-xl); margin-right: var(--space-xl); }

/* Margin Y-axis (top + bottom) */
.my-0 { margin-top: 0; margin-bottom: 0; }
.my-md { margin-top: var(--space-md); margin-bottom: var(--space-md); }
.my-lg { margin-top: var(--space-lg); margin-bottom: var(--space-lg); }
.my-xl { margin-top: var(--space-xl); margin-bottom: var(--space-xl); }
.my-2xl { margin-top: var(--space-2xl); margin-bottom: var(--space-2xl); }

/* Padding All Sides */
.p-0 { padding: 0; }
.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }
.p-2xl { padding: var(--space-2xl); }
.p-3xl { padding: var(--space-3xl); }

/* Padding Individual Sides */
.pt-md { padding-top: var(--space-md); }
.pt-lg { padding-top: var(--space-lg); }
.pt-xl { padding-top: var(--space-xl); }
.pt-2xl { padding-top: var(--space-2xl); }

.pb-md { padding-bottom: var(--space-md); }
.pb-lg { padding-bottom: var(--space-lg); }
.pb-xl { padding-bottom: var(--space-xl); }
.pb-2xl { padding-bottom: var(--space-2xl); }

.px-md { padding-left: var(--space-md); padding-right: var(--space-md); }
.px-lg { padding-left: var(--space-lg); padding-right: var(--space-lg); }
.px-xl { padding-left: var(--space-xl); padding-right: var(--space-xl); }

.py-md { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.py-2xl { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }

/* ========================================
   SECTION SPACING
   Standard section padding
   ======================================== */

.section-padding {
    padding: var(--section-padding-y) 0;
}

.section-padding-large {
    padding: var(--space-5xl) 0;
}

.section-padding-small {
    padding: var(--space-3xl) 0;
}

/* ========================================
   RESPONSIVE GRID
   Tablet & Mobile Breakpoints
   ======================================== */

@media (max-width: 968px) {
    /* Stack 12-column grid on tablet */
    .grid-12 .col-span-3,
    .grid-12 .col-span-4,
    .grid-12 .col-span-6 {
        grid-column: span 6; /* Half width */
    }
    
    /* 3 & 4 column grids become 2 columns */
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    /* All columns full width on mobile */
    .grid-12 [class*="col-span-"] {
        grid-column: span 12 !important;
    }
    
    /* All grids stack on mobile */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    /* Reduce gap on mobile */
    .grid-12,
    .grid-2,
    .grid-3,
    .grid-4 {
        gap: var(--grid-gap-small);
    }
}

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

.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }
.hidden { display: none; }

/* Responsive Display */
@media (max-width: 968px) {
    .hidden-tablet { display: none; }
}

@media (max-width: 640px) {
    .hidden-mobile { display: none; }
}

@media (min-width: 641px) {
    .visible-mobile { display: none; }
}

/* ========================================
   WIDTH & HEIGHT UTILITIES
   ======================================== */

.w-full { width: 100%; }
.w-auto { width: auto; }
.w-screen { width: 100vw; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-screen { height: 100vh; }

.max-w-full { max-width: 100%; }
.max-h-full { max-height: 100%; }

/* ========================================
   POSITION UTILITIES
   ======================================== */

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

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

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

.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }