/**
 * Layout CSS - Container, grid system, responsive breakpoints, section spacing
 */

/* Smooth scroll for anchor links and programmatic scroll */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

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

/* Section Spacing */
section {
    padding: var(--spacing-2xl) 0;
}

section:first-of-type {
    padding-top: var(--spacing-xl);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

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

/* Section Labels */
.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.section-label--light {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

/* Section Titles */
.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
    color: var(--color-text-black);
    margin-bottom: var(--spacing-md);
}

.section-title--light {
    color: #ffffff;
    font-weight: 700;
}

/* Section Descriptions */
.section-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-loose);
    color: var(--color-text-medium);
    max-width: 600px;
}

/* Page Header */
.page-header {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-white);
}

.page-header__title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.page-header__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-medium);
}

/* Page Transitions */
main {
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
    will-change: opacity, transform;
}

.page-transition-ready main {
    opacity: 1;
    transform: translateY(0);
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    main {
        transition: none;
        transform: none !important;
    }
}

/* Responsive Breakpoints */
/* Mobile First Approach */

/* Tablet */
@media (min-width: 768px) {
    :root {
        --container-padding: var(--spacing-lg);
    }

    section {
        padding: var(--spacing-3xl) 0;
    }

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

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

/* Desktop */
@media (min-width: 1024px) {
    :root {
        --container-padding: var(--spacing-xl);
    }

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

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

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

/* Mobile Specific */
@media (max-width: 767px) {
    :root {
        --container-padding: var(--spacing-sm);
    }

    .container {
        padding-left: var(--container-padding);
        padding-right: var(--container-padding);
        max-width: 100%;
        box-sizing: border-box;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    h1 {
        font-size: clamp(28px, 8vw, 48px);
    }

    section {
        padding: var(--spacing-xl) 0;
        max-width: 100%;
        overflow-x: hidden;
    }
}