/**
 * FightPulse Premium UI Polish
 *
 * This file provides premium styling enhancements for a professional publication look.
 * All values reference brand.css variables - no hardcoded colors/fonts.
 *
 * Contents:
 * A) Container & Spacing System
 * B) Typography Hierarchy
 * C) Premium Card System
 * D) Category Chips
 * E) More Headlines Module
 * F) Navigation Polish
 * G) Featured Hero Layout
 * H) Footer Improvements
 * I) Button System
 * J) Accessibility & Performance
 *
 * @version 1.0.0
 */

/* ==========================================================================
   A) CONTAINER & SPACING SYSTEM
   ========================================================================== */

/* Premium container with responsive gutters */
.fp-container {
    width: 100%;
    max-width: var(--fp-container-max);
    margin-inline: auto;
    padding-inline: clamp(16px, 4vw, var(--fp-container-padding));
}

/* Section spacing with fluid rhythm */
.fp-section {
    padding-block: clamp(var(--fp-space-8), 5vw, var(--fp-space-16));
}

.fp-section-sm {
    padding-block: clamp(var(--fp-space-6), 3vw, var(--fp-space-10));
}

.fp-section-lg {
    padding-block: clamp(var(--fp-space-10), 7vw, calc(var(--fp-space-16) * 1.5));
}

/* Vertical rhythm for content */
.fp-stack > * + * {
    margin-top: var(--fp-space-6);
}

.fp-stack-sm > * + * {
    margin-top: var(--fp-space-4);
}

.fp-stack-lg > * + * {
    margin-top: var(--fp-space-8);
}

/* ==========================================================================
   B) TYPOGRAPHY HIERARCHY
   ========================================================================== */

/* Font smoothing for crisp text */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Headline scale with fluid sizing */
.fp-h1,
.main-articles-section h1,
.article-wrapper h1,
.error-message h1 {
    font-family: var(--fp-font-heading);
    font-size: clamp(1.75rem, 4vw + 1rem, 2.75rem);
    font-weight: var(--fp-font-extrabold);
    line-height: var(--fp-leading-tight);
    letter-spacing: -0.02em;
    color: var(--fp-text-primary);
}

.fp-h2,
.section-title {
    font-family: var(--fp-font-heading);
    font-size: clamp(1.25rem, 2vw + 0.5rem, 1.75rem);
    font-weight: var(--fp-font-bold);
    line-height: var(--fp-leading-snug);
    letter-spacing: -0.01em;
    color: var(--fp-text-primary);
}

.fp-h3,
.article-title-small {
    font-family: var(--fp-font-body);
    font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
    font-weight: var(--fp-font-semibold);
    line-height: var(--fp-leading-snug);
    color: var(--fp-text-primary);
}

/* Meta text styling */
.fp-meta,
.article-meta-small,
.article-byline,
.sidebar-meta {
    font-size: var(--fp-text-sm);
    font-weight: var(--fp-font-medium);
    color: var(--fp-text-muted);
    line-height: var(--fp-leading-normal);
}

/* Body text improvements */
.fp-body,
.article-excerpt,
.article-summary,
.article-text p {
    font-size: clamp(0.9375rem, 1vw + 0.5rem, 1.0625rem);
    line-height: var(--fp-leading-relaxed);
    color: var(--fp-text-secondary);
}

/* ==========================================================================
   C) PREMIUM CARD SYSTEM
   ========================================================================== */

.fp-card {
    background: var(--fp-bg-card);
    border: 1px solid var(--fp-border-light);
    border-radius: var(--fp-radius-lg);
    box-shadow: var(--fp-shadow-card);
    overflow: hidden;
    transition: var(--fp-transition);
}

.fp-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--fp-shadow-card-hover);
    border-color: var(--fp-border);
}

/* Apply card styling to existing elements */
.featured-article,
.article-item {
    background: var(--fp-bg-card);
    border: 1px solid var(--fp-border-light);
    border-radius: var(--fp-radius-lg);
    box-shadow: var(--fp-shadow-card);
    transition: var(--fp-transition);
}

.featured-article:hover,
.article-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--fp-shadow-card-hover);
}

/* Card image treatment */
.fp-card-image,
.article-image-container,
.article-thumb {
    position: relative;
    overflow: hidden;
    border-radius: var(--fp-radius);
}

.fp-card-image img,
.article-image-container img,
.article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 16 / 10;
    transition: transform 0.4s ease;
}

.fp-card:hover img,
.featured-article:hover .article-image-container img,
.article-item:hover .article-thumb img {
    transform: scale(1.05);
}

/* Card content padding */
.fp-card-content,
.article-content,
.article-info {
    padding: clamp(var(--fp-space-4), 3vw, var(--fp-space-6));
}

/* ==========================================================================
   D) CATEGORY CHIPS (PILLS)
   ========================================================================== */

.fp-chip,
.article-category,
.article-category-small,
.sidebar-category {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-family: var(--fp-font-body);
    font-size: 11px;
    font-weight: var(--fp-font-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--fp-white);
    background: var(--fp-primary);
    border-radius: var(--fp-radius-full);
    border: none;
    white-space: nowrap;
    transition: var(--fp-transition-fast);
}

.fp-chip:hover,
.article-category:hover {
    background: var(--fp-primary-hover);
    transform: scale(1.02);
}

/* Chip variants */
.fp-chip--outline {
    background: transparent;
    color: var(--fp-primary);
    border: 1.5px solid var(--fp-primary);
}

.fp-chip--outline:hover {
    background: var(--fp-primary);
    color: var(--fp-white);
}

.fp-chip--small,
.article-category-small,
.sidebar-category {
    padding: 3px 8px;
    font-size: 10px;
}

/* ==========================================================================
   E) MORE HEADLINES MODULE
   ========================================================================== */

/*
 * More Headlines section - all articles visible, no scrolling.
 */

/* Individual headline row - subtle enhancements */
.sidebar-article {
    transition: var(--fp-transition-fast);
}

.sidebar-article:hover {
    background: var(--fp-gray-50);
}

/* Headline meta row */
.sidebar-meta {
    display: flex;
    align-items: center;
    gap: var(--fp-space-2);
}

.sidebar-date {
    font-size: var(--fp-text-xs);
    color: var(--fp-text-muted);
    font-weight: var(--fp-font-medium);
    white-space: nowrap;
}

/* ==========================================================================
   F) NAVIGATION POLISH
   ========================================================================== */

/* Navigation bar improvements */
.nav-section {
    background: rgba(26, 26, 26, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
}

/* ==========================================================================
   F.1) FRESHNESS SIGNAL
   ========================================================================== */

.nav-freshness {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    margin-right: auto;
    margin-left: 20px;
}

.freshness-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

.freshness-text {
    font-size: 11px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   F.2) HEADER ACTIONS (Search & Newsletter)
   ========================================================================== */

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
    margin-right: 20px;
}

/* Search Toggle & Form */
.header-search {
    position: relative;
    display: flex;
    align-items: center;
}

.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    border-radius: var(--fp-radius-sm);
    transition: var(--fp-transition-fast);
}

.search-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.search-form {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    background: #fff;
    border-radius: var(--fp-radius);
    overflow: hidden;
    width: 0;
    opacity: 0;
    visibility: hidden;
    transition: width 0.3s ease, opacity 0.2s ease, visibility 0.2s ease;
    box-shadow: var(--fp-shadow-lg);
}

.search-form.active {
    width: 280px;
    opacity: 1;
    visibility: visible;
}

.search-input {
    flex: 1;
    padding: 10px 14px;
    border: none;
    font-size: 14px;
    color: var(--fp-text-primary);
    background: transparent;
    outline: none;
    min-width: 0;
}

.search-input::placeholder {
    color: var(--fp-text-muted);
}

.search-submit,
.search-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    color: var(--fp-text-muted);
    cursor: pointer;
    transition: var(--fp-transition-fast);
    flex-shrink: 0;
}

.search-submit:hover {
    color: var(--fp-primary);
}

.search-close:hover {
    color: var(--fp-primary);
}

/* Hide toggle when form is active */
.header-search.active .search-toggle {
    opacity: 0;
    visibility: hidden;
    position: absolute;
}

/* Newsletter CTA */
.nav-newsletter {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--fp-radius-sm);
    transition: var(--fp-transition-fast);
    white-space: nowrap;
}

.nav-newsletter:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.newsletter-arrow {
    transition: transform 0.2s ease;
}

.nav-newsletter:hover .newsletter-arrow {
    transform: translateX(3px);
}

/* ==========================================================================
   F.3) MOBILE HEADER ADJUSTMENTS
   ========================================================================== */

@media (max-width: 1024px) {
    .nav-freshness {
        display: none;
    }

    .nav-actions {
        margin-right: 10px;
    }

    .nav-newsletter {
        display: none;
    }

    .search-form.active {
        width: 220px;
    }
}

@media (max-width: 768px) {
    .nav-section {
        flex-direction: column;
    }

    .nav-actions {
        position: fixed;
        top: 20px;
        right: 70px;
        margin: 0;
        z-index: 1000000;
    }

    .search-toggle {
        background: rgba(135, 0, 27, 0.9);
        color: #fff;
    }

    .search-form.active {
        position: fixed;
        top: 70px;
        right: 16px;
        left: 16px;
        width: auto;
        transform: none;
    }

    .nav-newsletter {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .freshness-dot {
        animation: none;
    }
}

/* Nav link hover states */
.nav-link {
    position: relative;
    transition: var(--fp-transition-fast);
}

/* Underline effect only for links WITHOUT dropdowns */
.nav-link:not(.has-dropdown)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--fp-primary-light);
    transition: var(--fp-transition-fast);
    transform: translateX(-50%);
}

.nav-link:not(.has-dropdown):hover::after,
.nav-link:not(.has-dropdown).active::after {
    width: calc(100% - 32px);
}

/* Nav link hover background */
.nav-link:hover {
    background: rgba(135, 0, 27, 0.9);
    border-radius: var(--fp-radius-sm);
}

/* Dropdown improvements */
.nav-dropdown {
    border-radius: 0 0 var(--fp-radius) var(--fp-radius);
    box-shadow: var(--fp-shadow-lg);
    border: 1px solid var(--fp-border-light);
    border-top: none;
}

.nav-dropdown a {
    transition: var(--fp-transition-fast);
}

.nav-dropdown a:hover {
    padding-left: 24px;
}

/* ==========================================================================
   G) FEATURED HERO LAYOUT (Magazine Style)
   ========================================================================== */

/* Hero grid layout */
.featured-article {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(var(--fp-space-6), 4vw, var(--fp-space-10));
    align-items: center;
    padding: clamp(var(--fp-space-4), 3vw, var(--fp-space-6));
    margin-bottom: clamp(var(--fp-space-6), 4vw, var(--fp-space-10));
}

/* Featured image treatment */
.featured-article .article-image-container {
    aspect-ratio: 16 / 10;
    border-radius: var(--fp-radius-lg);
    overflow: hidden;
    box-shadow: var(--fp-shadow-md);
}

/* Featured content styling */
.featured-article .article-content {
    display: flex;
    flex-direction: column;
    gap: var(--fp-space-4);
    padding: var(--fp-space-2) 0;
}

.featured-article .article-title {
    font-size: clamp(1.5rem, 3vw + 0.5rem, 2.25rem);
    font-weight: var(--fp-font-extrabold);
    line-height: var(--fp-leading-tight);
    margin-bottom: var(--fp-space-3);
}

.featured-article .article-excerpt {
    font-size: clamp(1rem, 1.5vw + 0.5rem, 1.125rem);
    line-height: var(--fp-leading-relaxed);
    color: var(--fp-text-secondary);
}

/* Responsive collapse */
@media (max-width: 900px) {
    .featured-article {
        grid-template-columns: 1fr;
        gap: var(--fp-space-5);
    }

    .featured-article .article-image-container {
        order: -1;
    }
}

/* ==========================================================================
   H) FOOTER IMPROVEMENTS
   ========================================================================== */

/* Footer structure */
.site-footer {
    background: var(--fp-bg-dark);
    border-top: 3px solid var(--fp-primary);
}

/* Footer grid - 4 columns desktop */
.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(var(--fp-space-6), 4vw, var(--fp-space-10));
    padding-bottom: var(--fp-space-10);
    margin-bottom: var(--fp-space-8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Footer section titles */
.footer-section h3 {
    font-family: var(--fp-font-heading);
    font-size: var(--fp-text-lg);
    font-weight: var(--fp-font-bold);
    color: #d32f2f;
    margin-bottom: var(--fp-space-5);
    position: relative;
    padding-bottom: var(--fp-space-2);
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: #d32f2f;
}

/* Footer links */
.footer-links a {
    display: block;
    padding: var(--fp-space-2) 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--fp-text-sm);
    text-decoration: none;
    transition: var(--fp-transition-fast);
}

.footer-links a:hover {
    color: var(--fp-white);
    padding-left: var(--fp-space-2);
}

/* Footer responsive - tablet 2 columns */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Footer responsive - mobile 1 column */
@media (max-width: 600px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-section h3::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links a:hover {
        padding-left: 0;
    }
}

/* ==========================================================================
   I) BUTTON SYSTEM
   ========================================================================== */

/* Base button */
.fp-btn,
.btn,
.read-more-btn,
.read-more-btn-small {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--fp-space-2);
    padding: 12px 24px;
    font-family: var(--fp-font-body);
    font-size: var(--fp-text-sm);
    font-weight: var(--fp-font-semibold);
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--fp-radius);
    cursor: pointer;
    transition: var(--fp-transition);
    white-space: nowrap;
}

/* Primary button */
.fp-btn--primary,
.btn-primary,
.read-more-btn {
    background: var(--fp-primary);
    color: var(--fp-white);
    border-color: var(--fp-primary);
    box-shadow: 0 2px 4px rgba(135, 0, 27, 0.2);
}

.fp-btn--primary:hover,
.btn-primary:hover,
.read-more-btn:hover {
    background: var(--fp-primary-hover);
    border-color: var(--fp-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(135, 0, 27, 0.3);
}

/* Secondary button */
.fp-btn--secondary,
.btn-secondary {
    background: transparent;
    color: var(--fp-text-primary);
    border-color: var(--fp-border-dark);
}

.fp-btn--secondary:hover,
.btn-secondary:hover {
    background: var(--fp-gray-100);
    border-color: var(--fp-text-primary);
}

/* Small button */
.fp-btn--sm,
.read-more-btn-small {
    padding: 8px 16px;
    font-size: var(--fp-text-xs);
}

/* Large button */
.fp-btn--lg,
.btn-lg {
    padding: 16px 32px;
    font-size: var(--fp-text-base);
}

/* Button focus states (accessibility) */
.fp-btn:focus-visible,
.btn:focus-visible,
.read-more-btn:focus-visible {
    outline: 3px solid var(--fp-primary-light);
    outline-offset: 2px;
}

/* ==========================================================================
   J) ACCESSIBILITY & PERFORMANCE
   ========================================================================== */

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .featured-article:hover,
    .article-item:hover,
    .fp-card:hover {
        transform: none;
    }

    .featured-article:hover .article-image-container img,
    .article-item:hover .article-thumb img {
        transform: none;
    }
}

/* Focus visible for keyboard navigation */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--fp-primary-light);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--fp-space-3) var(--fp-space-6);
    background: var(--fp-primary);
    color: var(--fp-white);
    font-weight: var(--fp-font-bold);
    text-decoration: none;
    border-radius: 0 0 var(--fp-radius) var(--fp-radius);
    z-index: var(--fp-z-tooltip);
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

/* Image placeholder / CLS prevention */
img {
    height: auto;
    max-width: 100%;
}

.article-image-container,
.article-thumb,
.sidebar-article-image {
    background: var(--fp-gray-100);
}

/* Ad slot space reservation */
.ad-container,
.adsbygoogle {
    min-height: 100px;
    background: var(--fp-gray-50);
}

/* ==========================================================================
   ADDITIONAL POLISH
   ========================================================================== */

/* Section title with underline */
.section-title {
    position: relative;
    padding-bottom: var(--fp-space-3);
    margin-bottom: var(--fp-space-5);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--fp-primary);
    border-radius: var(--fp-radius-full);
}

/* Quick links styling */
.quick-link {
    display: flex;
    align-items: center;
    gap: var(--fp-space-3);
    padding: var(--fp-space-3) var(--fp-space-4);
    background: var(--fp-bg-card);
    border: 1px solid var(--fp-border-light);
    border-radius: var(--fp-radius);
    color: var(--fp-text-primary);
    font-weight: var(--fp-font-medium);
    text-decoration: none;
    transition: var(--fp-transition-fast);
}

.quick-link:hover {
    background: var(--fp-primary);
    color: var(--fp-white);
    border-color: var(--fp-primary);
    transform: translateY(-2px);
}

/* View all section */
.view-all-section {
    text-align: center;
    padding-top: clamp(var(--fp-space-6), 4vw, var(--fp-space-10));
    margin-top: var(--fp-space-8);
    border-top: 1px solid var(--fp-border-light);
}

/* Article list spacing */
.article-list {
    display: flex;
    flex-direction: column;
    gap: var(--fp-space-5);
}

/* Primary column border */
.primary-column {
    border-right: 1px solid var(--fp-border-light);
    padding-right: clamp(var(--fp-space-6), 4vw, var(--fp-space-10));
}

@media (max-width: 1024px) {
    .primary-column {
        border-right: none;
        padding-right: 0;
        border-bottom: 1px solid var(--fp-border-light);
        padding-bottom: var(--fp-space-8);
        margin-bottom: var(--fp-space-8);
    }
}

/* Article page improvements */
.article-wrapper {
    background: var(--fp-bg-card);
    border-radius: var(--fp-radius-lg);
    box-shadow: var(--fp-shadow-card);
    padding: clamp(var(--fp-space-5), 4vw, var(--fp-space-10));
}

.article-meta {
    padding-bottom: var(--fp-space-5);
    margin-bottom: var(--fp-space-6);
    border-bottom: 2px solid var(--fp-border-light);
}

/* Tag improvements */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background: var(--fp-bg-secondary);
    border: 1px solid var(--fp-border);
    border-radius: var(--fp-radius-full);
    font-size: var(--fp-text-sm);
    font-weight: var(--fp-font-medium);
    color: var(--fp-text-secondary);
    text-decoration: none;
    transition: var(--fp-transition-fast);
}

.tag:hover {
    background: var(--fp-primary);
    color: var(--fp-white);
    border-color: var(--fp-primary);
}

/* Print styles */
@media print {
    .site-header,
    .site-footer,
    .nav-section,
    .sidebar-column,
    .ad-container,
    .share-icons,
    .read-more-btn {
        display: none !important;
    }

    .article-wrapper {
        box-shadow: none;
        padding: 0;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }
}