/**
 * Unified Page Template System
 *
 * Design System: Minimalism + Swiss Modernism 2.0
 * Typography: Poppins (headings) + Open Sans (body)
 * Container: max-width with responsive padding
 * Spacing: 8px base unit, mathematical ratios
 *
 * Based on UI/UX Pro Max design intelligence
 */

/* ===== Page Container (Universal) ===== */
.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-cream-50);
}

/* ===== Standard Page Header ===== */
.page-header {
    background: var(--color-navy-800);
    color: var(--color-cream-100);
    border-bottom: 3px solid var(--color-burgundy-500);
    padding: var(--space-8) 0; /* Vertical padding only, horizontal handled by container */
}

.page-header__container {
    max-width: 1280px; /* 80rem = ~1280px, consistent with current system */
    margin: 0 auto;
    padding: 0 var(--space-4); /* Base padding: 16px */
    box-sizing: border-box;
}

/* Responsive padding (Tailwind pattern: px-4 md:px-6 lg:px-8) */
@media (width >= 768px) {
    .page-header__container {
        padding: 0 var(--space-6); /* md: 24px */
    }
}

@media (width >= 1024px) {
    .page-header__container {
        padding: 0 var(--space-8); /* lg: 32px */
    }
}

.page-header__back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-cream-200);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    margin-bottom: var(--space-4);
    position: relative;
}

.page-header__back-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-cream-50);
    transition: width var(--transition-fast);
}

@media (hover: hover) {
    .page-header__back-link:hover {
        color: var(--color-cream-50);
    }

    .page-header__back-link:hover::after {
        width: 100%;
    }
}

.page-header__back-link:focus::after {
    width: 100%;
}

.page-header__title {
    font-family: var(--font-heading); /* Geometric, modern headings */
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    line-height: 1.2;
}

.page-header__subtitle {
    font-family: var(--font-body); /* Humanist, readable body text */
    font-size: var(--font-size-lg);
    color: var(--color-cream-200);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== Main Content Container ===== */
.page-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-4);
    width: 100%;
    box-sizing: border-box;
    flex: 1; /* Push footer to bottom */
}

/* Responsive padding for content */
@media (width >= 768px) {
    .page-content {
        padding: var(--space-8) var(--space-6);
    }
}

@media (width >= 1024px) {
    .page-content {
        padding: var(--space-12) var(--space-8);
    }
}

/* ===== Content Sections ===== */
.page-section {
    margin-bottom: var(--space-12);
}

.page-section__title {
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-navy-800);
    margin-bottom: var(--space-6);
}

.page-section__description {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--color-navy-600);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

/* ===== Centered Content Blocks ===== */
.page-content--center {
    text-align: center;
}

.page-content--narrow {
    max-width: 800px;
}

.page-content--wide {
    max-width: 1400px;
}

/* ===== Typography Overrides for Consistency ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
}

body, p, li, label, input, button {
    font-family: var(--font-body);
}

/* ===== Responsive Typography ===== */
@media (width <= 768px) {
    .page-header__title {
        font-size: var(--font-size-2xl);
    }

    .page-header__subtitle {
        font-size: var(--font-size-base);
    }

    .page-section__title {
        font-size: var(--font-size-xl);
    }
}

/* ===== Page Template Variant (Theme pages) ===== */
.page-template {
    min-height: 100vh;
    background: var(--color-cream-50);
}

.page-template__container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-8, 2rem) var(--space-4, 1rem);
    width: 100%;
    box-sizing: border-box;
}

@media (width >= 768px) {
    .page-template__container {
        padding: var(--space-8, 2rem) var(--space-6, 1.5rem);
    }
}

@media (width >= 1024px) {
    .page-template__container {
        padding: var(--space-12, 3rem) var(--space-8, 2rem);
    }
}

.page-template__header {
    text-align: center;
    margin-bottom: var(--space-8, 2rem);
}

.page-template__title {
    font-family: var(--font-heading, var(--font-display));
    font-size: var(--font-size-3xl, 1.875rem);
    font-weight: 700;
    color: var(--color-navy-800);
    margin: 0 0 var(--space-2, 0.5rem);
    line-height: 1.2;
}

.page-template__description {
    font-size: var(--font-size-base, 1rem);
    color: var(--color-navy-600, #4b5563);
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto var(--space-2, 0.5rem);
}

.page-template__count {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-gray-500, #6b7280);
    font-weight: 500;
}

@media (width <= 768px) {
    .page-template__title {
        font-size: var(--font-size-2xl, 1.5rem);
    }
}

/* ===== Breadcrumb (Theme pages) ===== */
.breadcrumb {
    margin-bottom: var(--space-6, 1.5rem);
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-gray-500, #6b7280);
}

.breadcrumb__item {
    display: flex;
    align-items: center;
}

.breadcrumb__item + .breadcrumb__item::before {
    content: "/";
    margin: 0 8px;
    color: var(--color-gray-400, #9ca3af);
}

.breadcrumb__link {
    color: var(--color-navy, var(--color-navy-800));
    text-decoration: none;
    transition: color 0.15s ease;
}

.breadcrumb__link:hover {
    color: var(--color-burgundy);
    text-decoration: underline;
}

.breadcrumb__item--active {
    color: var(--color-gray-600, #4b5563);
    font-weight: 500;
}

/* ===== Utility: Center text ===== */
.text-center {
    text-align: center;
}

/* ===== Layout Anti-Pattern Prevention ===== */

/* Based on UX guidelines: prevent content jumping */
.page img,
.page video {
    max-width: 100%;
    height: auto;
}

/* Reserve space for async content (UX guideline) */
.page [data-loading] {
    min-height: 200px;
}