:root {
    --bg-base: #000000;
    --bg-page: #0a0a0c;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-bg-hover: rgba(255, 255, 255, 0.06);
    --header-bg: rgba(0, 0, 0, 0.75);
    
    --text-primary: #F5F5F7;
    --text-secondary: #86868B;
    --text-tertiary: #52525B;
    
    --accent-primary: #0A84FF;
    --accent-primary-hover: #409CFF;
    --accent-success: #30D158;
    --accent-warning: #FFD60A;
    
    --tag-health-bg: rgba(48, 209, 88, 0.15);
    --tag-health-text: #30D158;
    --tag-cyber-bg: rgba(10, 132, 255, 0.15);
    --tag-cyber-text: #0A84FF;
    
    --border-light: rgba(255, 255, 255, 0.1);
    --border-glass: rgba(255, 255, 255, 0.05);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --text-gradient-main: linear-gradient(135deg, #FFFFFF 0%, #A1A1A6 100%);
    --text-gradient-name: linear-gradient(90deg, #A29CD3, #E8BFAC);
    --glow-bg: radial-gradient(circle at 50% 0%, rgba(10, 132, 255, 0.15) 0%, rgba(0, 0, 0, 0) 60%);

    --max-width: 860px;
    --border-radius-lg: 24px;
    --border-radius-md: 16px;
    --border-radius-sm: 8px;
    
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.2s ease-in-out;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-base);
    background-image: var(--glow-bg);
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

.main-container {
    width: 100%;
    max-width: var(--max-width);
    padding: 0 24px 80px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
}

.header {
    width: 100%;
    height: 70px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 40px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-glass);
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding: 0 calc(50vw - 50% + 24px);
}

.welcome-section {
    width: 100%;
    text-align: center;
    margin-bottom: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeUp 0.8s var(--transition-smooth) forwards;
}

.welcome-section img.bg-orb,
.hero-title img {
    display: none;
}

.hero-title {
    margin-bottom: 16px;
}

.welcome-section h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    background: var(--text-gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.welcome-section h1 span {
    background: var(--text-gradient-name);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto 32px auto;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.scroll-logo {
    display: none;
}

.news-section {
    width: 100%;
    animation: fadeUp 1s var(--transition-smooth) forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.news-section h2 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    text-align: left;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.filter-buttons {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: 99px;
    margin-bottom: 40px;
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
}

.filter-button {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 8px 24px;
    border-radius: 99px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-button:hover {
    color: var(--text-primary);
}

.filter-button.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

#articles-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    width: 100%;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.6s var(--transition-smooth) forwards;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    pointer-events: none;
}

.article-card:hover {
    background: var(--card-bg-hover);
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-glass);
    border-color: rgba(255, 255, 255, 0.15);
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 16px;
}

.article-header-left {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.article-card a.article-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.01em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition-fast);
}

.article-card:hover a.article-title {
    color: var(--accent-primary-hover);
}

.tag {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--tag-cyber-bg);
    color: var(--tag-cyber-text);
}

.article-card[data-type="health"] .tag {
    background: var(--tag-health-bg);
    color: var(--tag-health-text);
}

.fav-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.fav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.fav-btn.favorited {
    background: rgba(255, 214, 10, 0.15);
    border-color: rgba(255, 214, 10, 0.3);
}

.fav-btn.favorited svg path {
    stroke: var(--accent-warning);
    fill: var(--accent-warning);
}

.article-content {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    border-top: 1px solid var(--border-glass);
    padding-top: 16px;
}

.author {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.article-meta img {
    opacity: 0.5;
}

#loading {
    margin: 40px 0;
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

#loading::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

#loading.hidden {
    display: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.load-more-button {
    margin: 40px auto 0;
    padding: 12px 32px;
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 99px;
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.load-more-button:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.to-top-button {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    background: rgba(25, 25, 25, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.to-top-button.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.to-top-button:hover {
    background: rgba(40, 40, 40, 0.9);
}

.earth-footer {
    display: none;
}

.minimal-footer {
    width: 100%;
    padding: 32px 24px;
    margin-top: auto;
    border-top: 1px solid var(--border-glass);
}

.footer-content-minimal {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.copyright-minimal {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.mentions-legales-button {
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.mentions-legales-button:hover {
    color: var(--text-primary);
}

@media (min-width: 600px) {
    .footer-content-minimal {
        flex-direction: row;
        justify-content: space-between;
    }
}

.edit-pseudo {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--accent-primary);
    color: var(--text-primary);
    font-size: inherit;
    font-family: inherit;
    font-weight: inherit;
    padding: 0;
    outline: none;
    text-align: inherit;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 768px) {
    .welcome-section h1 {
        font-size: 2.5rem;
    }

    .news-section h2 {
        font-size: 1.5rem;
    }

    .filter-buttons {
        max-width: 100%;
        overflow-x: auto;
        white-space: nowrap;
        justify-content: flex-start;
        padding-bottom: 4px;
    }

    .article-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .fav-btn {
        position: absolute;
        top: 24px;
        right: 24px;
    }

    .article-card a.article-title {
        padding-right: 48px;
    }

    .to-top-button {
        bottom: 24px;
        right: 24px;
    }
}