/* ===============================
   CSS VARIABLES
================================ */
:root {
    /* Main color variable (used in other pages) */

    /* Colors */
    --primary: var(--color);
    --primary-dark: var(--color-dark);
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border: #e5e7eb;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 999px;

    /* Transitions - only for colors */
    --transition-color: 0.3s ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
}

/* ===============================
   GLOBAL STYLES
================================ */

main section {
    margin-bottom: clamp(3rem, 8vw, 6rem);
}

main h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

main h3 {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

main p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--bg-white);
    margin-bottom: var(--spacing-md);
}

main ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

/* ===============================
   CTA BUTTONS
================================ */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    background: var(--primary);
    color: var(--bg-white);
    font-weight: 600;
    font-size: 1.125rem;
    border-radius: var(--radius-full);
    text-decoration: none;
}

.cta-wrapper {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ===============================
   HERO SECTION
================================ */
.hero {
    text-align: center;
    padding: clamp(2rem, 6vh, 4rem) 0 clamp(4rem, 12vh, 8rem);
    background: var(--color);
    border-radius: var(--radius-xl);
    color: var(--bg-white);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(80px);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.1;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.hero-description {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.hero-link {
    font-size: 1.5rem;
    border: 2px solid var(--bg-white);
    padding: 0.75rem 1.5rem;
    border-radius: 1.125rem;
    margin: 20px 0 0;
    display: inline-block;
}

.hero-link:hover {
    font-size: 1.5rem;
    border: 2px solid var(--bg-white);
    padding: 0.75rem 1.5rem;
    border-radius: 1.125rem;
    color: var(--color);
    background: var(--bg-white);
}

/* ===============================
   ABOUT SECTION
================================ */
.about {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.about-intro {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.highlights-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.highlights-list li {
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    font-size: 1.125rem;
    color: var(--text-dark);
}

/* ===============================
   MEMBERSHIP PREVIEW
================================ */
.membership-preview {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    color: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.membership-preview::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    filter: blur(60px);
}

.membership-preview h2 {
    color: var(--bg-white);
    position: relative;
    z-index: 1;
}

.membership-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.benefits-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.benefits-list li {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: background var(--transition-color);
    font-size: 1.125rem;
}

.membership-preview .cta-button {
    background: var(--bg-white);
    color: var(--primary);
    position: relative;
    z-index: 1;
}

/* ===============================
   EVENTS PREVIEW
================================ */
.events-preview h2 {
    text-align: center;
}

.events-preview>p {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

.events-preview-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.event-preview-card {
    background: var(--bg-white);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-color);
}

.event-preview-card h3 {
    background: var(--primary);
    color: var(--bg-white);
    padding: var(--spacing-md);
    margin: 0 0 var(--spacing-md) 0;
    font-size: 1.25rem;
}

.event-preview-card p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--text-light);
    margin: 0;
}

/* ===============================
   NEWS PREVIEW
================================ */
/* ===============================
   NEWS PREVIEW
================================ */
.news-preview {
    background: var(--bg-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}


.news-preview h2 {
    text-align: center;
}

.news-preview > p {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

.news-preview .news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.news-preview .news-item {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    min-height: fit-content;
}

.news-preview .news-item img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.news-preview .news-title {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-xs);
    font-size: 1.125rem;
    color: var(--text-dark);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden
}

.news-preview .news-item p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--text-light);
    font-size: 0.975rem;
    margin: 0;
    line-height: 1.6;
}

/* ===============================
   CONFERENCES PREVIEW
================================ */
.conferences-preview {
    text-align: center;
}

.conferences-preview h2 {
    text-align: center;
}

.conferences-preview>p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl) auto;
    color: var(--text-light);
}

.featured-speakers {
    margin-bottom: var(--spacing-xl);
}

.featured-speakers h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.speakers-preview-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.speakers-preview-list li {
    flex: 0 0 auto;
    width: clamp(140px, 20vw, 180px);
    text-align: center;
}

.speakers-preview-list img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--primary);
    margin-bottom: var(--spacing-sm);
}

.speakers-preview-list p {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
}

/* ===============================
   PARTNERS PREVIEW
================================ */
.partners-preview {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

.partners-preview h2 {
    text-align: center;
}

.partners-preview>p {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

.partners-preview-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.partners-preview-list li {
    display: flex;
    height: 100%;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    transition: background var(--transition-color);
}

.partners-preview-list a {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
}

.partners-preview-list img {
    max-width: 100%;
    max-height: 80px;
    height: 100%;
    width: auto;
    height: auto;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: filter var(--transition-color), opacity var(--transition-color);
}

/* ===============================
   CONTACT PREVIEW
================================ */
.contact-preview {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color);
    border-radius: var(--radius-xl);
    color: var(--bg-white);
}

.contact-preview h2 {
    color: var(--bg-white);
}

.contact-preview p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
}

.contact-preview a {
    color: var(--bg-white);
    font-weight: 600;
    font-size: 1.25rem;
    text-decoration: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.5);
    transition: border-color var(--transition-color);
}

/* ===============================
   RESPONSIVE DESIGN
================================ */
@media (max-width: 768px) {
    main {
        padding: 0 var(--spacing-sm);
    }

    main section {
        margin-bottom: var(--spacing-2xl);
    }

    .hero {
        padding: clamp(2rem, 8vh, 4rem) var(--spacing-md);
    }

    .about,
    .membership-preview,
    .news-preview,
    .partners-preview,
    .contact-preview {
        padding: var(--spacing-lg);
    }

    .highlights-list,
    .benefits-list {
        grid-template-columns: 1fr;
    }

    .events-preview-list {
    grid-template-columns: 1fr;
}

.news-preview .news-grid {
    grid-template-columns: 1fr;
}

    .speakers-preview-list {
        gap: var(--spacing-md);
    }

    .speakers-preview-list li {
        width: clamp(100px, 30vw, 140px);
    }

    .partners-preview-list {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .cta-button {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-description {
        font-size: 1rem;
    }
}

.regulations-preview {
    background: var(--bg-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

.regulations-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: calc(20% / 3);
}

.regulation-item {
    padding: var(--spacing-md);
    background: var(--color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    font-size: 1.125rem;
    color: var(--text-dark);
}

.regulation-item div {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 50px;
    color: var(--bg-white);
    text-align: center;
}

.regulation-item p {
    margin-bottom: var(--spacing-sm);
    font-size: 20px;
    color: var(--bg-white);
    text-align: center;
}

@media (max-width: 1000px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: repeat(1, 1fr) !important;
    }
}