/* ============================================
   CHATDIVERTENTI.IT - PREMIUM REDESIGN 2026
   Stile WhatsApp Moderno & Elegante
   ============================================ */

/* Google Fonts - Typography Moderna */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:wght@600;700&display=swap');

/* Variabili CSS - Palette WhatsApp Premium */
:root {
    /* Colori WhatsApp */
    --whatsapp-green: #128C7E;
    --whatsapp-light: #25D366;
    --whatsapp-dark: #075E54;
    --whatsapp-bubble: #DCF8C6;
    --whatsapp-chat-bg: #ECE5DD;
    --whatsapp-teal: #00A884;
    
    /* Neutri */
    --white: #ffffff;
    --off-white: #fafafa;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --shadow-green: 0 8px 30px rgba(18, 140, 126, 0.25);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
}

/* Reset Moderno */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Body - Sfondo Pattern Chat */
body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--off-white);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(18, 140, 126, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(37, 211, 102, 0.03) 0%, transparent 50%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Links */
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ============================================
   HEADER - Premium con Blur
   ============================================ */
header {
    background: linear-gradient(135deg, var(--whatsapp-dark) 0%, var(--whatsapp-green) 50%, var(--whatsapp-teal) 100%);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.logo p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.75);
    font-weight: 400;
}

/* Nav Desktop */
nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

nav a {
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

nav a:hover {
    color: var(--white);
    background: rgba(255,255,255,0.15);
}

/* Hamburger Menu (Mobile) */
.nav-toggle {
    display: none;
}

.nav-toggle-label {
    display: none;
    cursor: pointer;
    color: var(--white);
    font-size: 1.5rem;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
main {
    flex: 1;
    padding: 3rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* Titoli Sezioni */
.featured-stories h2,
.latest-stories h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.featured-stories h2::before,
.latest-stories h2::before {
    content: '';
    width: 4px;
    height: 32px;
    background: linear-gradient(180deg, var(--whatsapp-light), var(--whatsapp-dark));
    border-radius: 4px;
}

/* ============================================
   STORY GRID - Cards Premium
   ============================================ */
.story-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Story Card */
.story-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition-slow);
    position: relative;
    display: flex;
    flex-direction: column;
}

.story-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--whatsapp-light), var(--whatsapp-teal));
    opacity: 0;
    transition: var(--transition);
}

.story-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.story-card:hover::before {
    opacity: 1;
}

/* Card Image */
.story-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.story-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.story-card:hover .story-image img {
    transform: scale(1.08);
}

/* Image Overlay */
.story-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.4), transparent);
    opacity: 0;
    transition: var(--transition);
}

.story-card:hover .story-image::after {
    opacity: 1;
}

/* Card Content */
.story-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Category Badge */
.story-category {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, var(--whatsapp-bubble), rgba(220, 248, 198, 0.6));
    color: var(--whatsapp-dark);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    width: fit-content;
}

.story-category::before {
    content: '💬';
    font-size: 0.75rem;
}

/* Card Title */
.story-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    transition: var(--transition);
}

.story-card:hover .story-content h3 {
    color: var(--whatsapp-green);
}

/* Card Excerpt */
.story-excerpt {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

/* Read More Button */
.read-more {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background: linear-gradient(135deg, var(--whatsapp-light), var(--whatsapp-green));
    color: var(--white);
    padding: 0.85rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    box-shadow: var(--shadow-green);
    margin-top: auto;
}

.read-more:hover {
    background: linear-gradient(135deg, var(--whatsapp-teal), var(--whatsapp-dark));
    transform: translateX(4px);
    box-shadow: 0 12px 35px rgba(18, 140, 126, 0.35);
}

.read-more i,
.read-more svg {
    font-size: 0.85rem;
    transition: var(--transition);
}

.read-more:hover i,
.read-more:hover svg {
    transform: translateX(4px);
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    display: none;
}

/* ============================================
   SEARCH BOX
   ============================================ */
.search-box {
    margin-bottom: 2.5rem;
}

.search-box form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 50px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: var(--transition);
}

.search-box form:focus-within {
    border-color: var(--whatsapp-light);
    box-shadow: var(--shadow-green);
}

.search-box input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    font-size: 1rem;
    font-family: var(--font-sans);
    background: transparent;
    outline: none;
}

.search-box input::placeholder {
    color: var(--gray-400);
}

.search-box button {
    background: linear-gradient(135deg, var(--whatsapp-light), var(--whatsapp-green));
    color: var(--white);
    border: none;
    padding: 1rem 1.75rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
}

.search-box button:hover {
    background: linear-gradient(135deg, var(--whatsapp-teal), var(--whatsapp-dark));
}

/* ============================================
   FOOTER - Elegante
   ============================================ */
footer {
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    color: var(--white);
    padding: 3rem 2rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--whatsapp-light);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--gray-400);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--white);
    padding-left: 4px;
}

.social-icons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--whatsapp-light);
    transform: translateY(-4px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--gray-500);
    font-size: 0.85rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.story-card {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.story-card:nth-child(1) { animation-delay: 0.1s; }
.story-card:nth-child(2) { animation-delay: 0.2s; }
.story-card:nth-child(3) { animation-delay: 0.3s; }
.story-card:nth-child(4) { animation-delay: 0.4s; }
.story-card:nth-child(5) { animation-delay: 0.5s; }
.story-card:nth-child(6) { animation-delay: 0.6s; }
.story-card:nth-child(7) { animation-delay: 0.7s; }
.story-card:nth-child(8) { animation-delay: 0.8s; }
.story-card:nth-child(9) { animation-delay: 0.9s; }

/* ============================================
   RESPONSIVE - Tablet
   ============================================ */
@media screen and (max-width: 1024px) {
    .story-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    header {
        padding: 1rem 1.5rem;
    }
    
    main {
        padding: 2rem 1.5rem;
    }
}

/* ============================================
   RESPONSIVE - Mobile
   ============================================ */
@media screen and (max-width: 768px) {
    body {
        background-color: var(--white);
        font-size: 15px;
    }
    
    header {
        padding: 0.75rem 1rem;
        justify-content: center;
    }
    
    .logo {
        width: 100%;
        justify-content: center;
    }
    
    .logo h1 {
        font-size: 1.35rem;
    }
    
    .logo p {
        display: none;
    }
    
    nav, .desktop-only-nav {
        display: none;
    }
    
    .nav-toggle-label {
        display: block;
        position: absolute;
        right: 1rem;
    }
    
    main {
        padding: 1.25rem 1rem;
        background: var(--white);
    }
    
    .featured-stories h2,
    .latest-stories h2 {
        font-size: 1.4rem;
        margin-bottom: 1.25rem;
    }
    
    .featured-stories h2::before,
    .latest-stories h2::before {
        height: 24px;
        width: 3px;
    }
    
    .story-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .story-card {
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--gray-100);
    }
    
    .story-card:hover {
        transform: none;
    }
    
    .story-card::before {
        display: none;
    }
    
    .story-image {
        aspect-ratio: 16/9;
    }
    
    .story-content {
        padding: 1.25rem;
    }
    
    .story-content h3 {
        font-size: 1.05rem;
    }
    
    .story-category {
        font-size: 0.65rem;
        padding: 0.35rem 0.75rem;
    }
    
    .read-more {
        width: 100%;
        padding: 0.9rem 1.5rem;
        font-size: 0.95rem;
    }
    
    footer {
        padding: 1.5rem 1rem;
        background: var(--whatsapp-dark);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1rem;
    }
    
    .footer-section h3 {
        display: none;
    }
    
    .footer-section ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem 1.5rem;
    }
    
    .footer-section ul li {
        margin: 0;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .footer-bottom {
        padding-top: 1rem;
        margin-top: 1rem;
    }
    
    /* Scroll fluido mobile */
    html {
        overflow-x: hidden;
        overflow-y: scroll;
        -webkit-overflow-scrolling: touch;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.visible { display: block !important; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* Scrollbar personalizzata */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Selection */
::selection {
    background: var(--whatsapp-bubble);
    color: var(--whatsapp-dark);
}