/* =================================================================
   LAYOUT SYSTEM
   ================================================================= */

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* Container Variants */
.container--narrow {
    max-width: var(--max-w-4xl);
}

.container--wide {
    max-width: 1600px;
}

.container--full {
    max-width: 100%;
    padding-left: 0;
    padding-right: 0;
}

/* ===== SECTIONS ===== */

.section {
    position: relative;
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
}

/* Section Variants */
.section--dark {
    background-color: #111111;
}

.section--darker {
    background-color: var(--color-bg-secondary);
}

.section--light {
    background-color: var(--color-bg-tertiary);
}

.section--accent {
    background-color: var(--color-accent);
    color: var(--color-white);
}

/* Section Sizes */
.section--sm {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

.section--lg {
    padding-top: var(--space-32);
    padding-bottom: var(--space-32);
}

.section--xl {
    padding-top: var(--space-40);
    padding-bottom: var(--space-40);
}

/* Section Header */
.section__header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section__subtitle {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.section__title {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
}

.section__title span {
    color: var(--color-accent);
}

.section__description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: var(--max-w-2xl);
    margin-left: auto;
    margin-right: auto;
    line-height: var(--leading-relaxed);
}

/* ===== GRID SYSTEM ===== */

.grid {
    display: grid;
    gap: var(--space-6);
}

/* Grid Columns */
.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-cols-6 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.grid-cols-12 {
    grid-template-columns: repeat(12, minmax(0, 1fr));
}

/* Auto-fit Grid */
.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* Grid Gaps */
.gap-0 {
    gap: 0;
}

.gap-1 {
    gap: var(--space-1);
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-5 {
    gap: var(--space-5);
}

.gap-6 {
    gap: var(--space-6);
}

.gap-8 {
    gap: var(--space-8);
}

.gap-10 {
    gap: var(--space-10);
}

.gap-12 {
    gap: var(--space-12);
}

/* ===== FLEXBOX SYSTEM ===== */

.flex {
    display: flex;
}

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

/* Flex Direction */
.flex-row {
    flex-direction: row;
}

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

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

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

/* Flex Wrap */
.flex-wrap {
    flex-wrap: wrap;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

.flex-none {
    flex: none;
}

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

/* Tablet and up */
@media (min-width: 768px) {
    .container {
        --container-padding: var(--space-8);
    }

    .section {
        padding-top: var(--space-28);
        padding-bottom: var(--space-28);
    }

    .section--sm {
        padding-top: var(--space-20);
        padding-bottom: var(--space-20);
    }

    .section--lg {
        padding-top: var(--space-36);
        padding-bottom: var(--space-36);
    }

    .section--xl {
        padding-top: var(--space-48);
        padding-bottom: var(--space-48);
    }

    /* Responsive Grid */
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .md\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .md\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    /* Responsive Flex */
    .md\:flex-row {
        flex-direction: row;
    }

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

/* Desktop and up */
@media (min-width: 1024px) {
    .container {
        --container-padding: var(--space-12);
    }

    .section {
        padding-top: var(--space-32);
        padding-bottom: var(--space-32);
    }

    /* Responsive Grid */
    .lg\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .lg\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .lg\:grid-cols-6 {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }

    /* Responsive Flex */
    .lg\:flex-row {
        flex-direction: row;
    }

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

/* Large Desktop */
@media (min-width: 1280px) {
    .xl\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .xl\:grid-cols-6 {
        grid-template-columns: repeat(6, minmax(0, 1fr));
    }
}

/* ===== VISIBILITY ===== */

.hidden {
    display: none !important;
}

.block {
    display: block;
}

.inline {
    display: inline;
}

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

/* Responsive Visibility */
@media (max-width: 767px) {
    .sm\:hidden {
        display: none !important;
    }

    .sm\:block {
        display: block !important;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .md\:hidden {
        display: none !important;
    }

    .md\:block {
        display: block !important;
    }
}

@media (min-width: 1024px) {
    .lg\:hidden {
        display: none !important;
    }

    .lg\:block {
        display: block !important;
    }
}

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

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.sticky {
    position: sticky;
}

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

.overflow-auto {
    overflow: auto;
}

.overflow-hidden {
    overflow: hidden;
}

.overflow-visible {
    overflow: visible;
}

.overflow-scroll {
    overflow: scroll;
}

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

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

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

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