/* Ultra Modern Sharp Design - Premium Crypto News */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #000000;
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* Global animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 20px, 0);
    }

    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 6px rgba(0, 255, 136, 0.2);
    }

    50% {
        box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
    }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    border-bottom: 3px solid #00ff88;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    animation: fadeIn 0.8s ease-out;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(0, 255, 136, 0.05) 50%, transparent 100%);
    animation: glow 4s ease-in-out infinite;
    will-change: box-shadow;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    position: relative;
    z-index: 1;
}

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

.logo-icon {
    width: 3.5rem;
    height: 3.5rem;
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 900;
    color: #000000;
    clip-path: polygon(0 0, 100% 0, 85% 100%, 0% 100%);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.logo-icon:hover::before {
    opacity: 1;
    transform: rotate(45deg) translate(100%, 100%);
}

.logo-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.4);
}

.logo-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: -0.025em;
    text-transform: uppercase;
    line-height: 1;
}

.logo-divider {
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 255, 136, 0.2) 10%, 
        #00ff88 20%, 
        #00cc6a 50%, 
        #00ff88 80%, 
        rgba(0, 255, 136, 0.2) 90%, 
        transparent 100%
    );
    margin: 0.125rem 0;
    border-radius: 1px;
    animation: dividerExpand 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.8s forwards;
    box-shadow: 0 0 3px rgba(0, 255, 136, 0.3);
    position: relative;
    overflow: hidden;
    will-change: width, opacity;
}

@keyframes dividerExpand {
    0% {
        width: 0;
        opacity: 0;
        box-shadow: 0 0 0 rgba(0, 255, 136, 0);
    }
    20% {
        opacity: 0.8;
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 4px rgba(0, 255, 136, 0.4);
    }
    100% {
        width: 100%;
        opacity: 1;
        box-shadow: 0 0 3px rgba(0, 255, 136, 0.3);
    }
}



.logo-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: #00ff88;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0;
    animation: subtitleAppear 1.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.6s forwards,
               subtitleGlow 3s ease-in-out infinite 2.1s;
    line-height: 1;
    text-align: center;
    width: 100%;
    will-change: opacity, transform;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.8), 0 0 20px rgba(0, 255, 136, 0.5);
    transition: all 0.2s ease;
    position: relative;
}

@keyframes subtitleAppear {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.7);
        filter: blur(4px);
    }
    30% {
        opacity: 0.4;
        transform: translateY(10px) scale(0.85);
        filter: blur(2px);
    }
    60% {
        opacity: 0.8;
        transform: translateY(3px) scale(0.95);
        filter: blur(0.5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes subtitleGlow {
    0%, 100% {
        text-shadow: 0 0 10px rgba(0, 255, 136, 0.8), 0 0 20px rgba(0, 255, 136, 0.5);
        transform: scale(1);
    }
    50% {
        text-shadow: 0 0 15px rgba(0, 255, 136, 1), 0 0 30px rgba(0, 255, 136, 0.7);
        transform: scale(1.02);
    }
}

.logo:hover .logo-subtitle {
    animation: subtitlePulse 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), subtitleGlow 1.5s ease-in-out infinite;
    color: #ffffff;
    text-shadow: 0 0 20px rgba(0, 255, 136, 1), 0 0 40px rgba(255, 255, 255, 0.6), 0 0 60px rgba(0, 255, 136, 0.4);
    transform: scale(1.05);
}



@keyframes subtitlePulse {
    0% {
        transform: scale(1.05);
        text-shadow: 0 0 20px rgba(0, 255, 136, 1), 0 0 40px rgba(255, 255, 255, 0.6);
    }
    50% {
        transform: scale(1.08);
        text-shadow: 0 0 25px rgba(0, 255, 136, 1), 0 0 50px rgba(255, 255, 255, 0.8), 0 0 80px rgba(0, 255, 136, 0.6);
    }
    100% {
        transform: scale(1.05);
        text-shadow: 0 0 20px rgba(0, 255, 136, 1), 0 0 40px rgba(255, 255, 255, 0.6);
    }
}

.nav {
    display: flex;
    gap: 0;
}

/* Hide mobile menu elements on desktop */
.mobile-menu-btn,
.mobile-menu {
    display: none;
}

.nav-link {
    text-decoration: none;
    color: #cccccc;
    font-weight: 700;
    padding: 1.25rem 2.5rem;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border-right: 2px solid #333333;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.2), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: #000000;
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.3);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 50%, #000000 100%);
    padding: 6rem 0;
    position: relative;
    border-bottom: 3px solid #00ff88;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
        linear-gradient(90deg, transparent 49%, rgba(0, 255, 136, 0.05) 50%, transparent 51%);
    background-size: 800px 800px, 800px 800px, 200px 200px;
    animation: glow 4s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(0, 255, 136, 0.03) 50%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 2rem;
}

.hero-tag {
    padding: 0.75rem 2rem;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 2px solid #333333;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.hero-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.2), transparent);
    transition: left 0.5s ease;
}

.hero-tag:hover::before {
    left: 100%;
}

.hero-tag:hover {
    border-color: #00ff88;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 136, 0.3);
}

.hero-tag.pinned {
    background: #ff3366;
    color: #ffffff;
    border-color: #ff3366;
}

.hero-tag.pinned:hover {
    background: #ff1a4d;
    border-color: #ff1a4d;
    box-shadow: 0 5px 15px rgba(255, 51, 102, 0.4);
}

.hero-tag.category {
    background: #1a1a1a;
    color: #00ff88;
    border-color: #00ff88;
}

.hero-tag.category:hover {
    background: #00ff88;
    color: #000000;
    border-color: #00ff88;
}

.hero-tag.active {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.4);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 0.9;
    margin-bottom: 2rem;
    letter-spacing: -0.05em;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #00ff88 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: slideInUp 1s ease-out 0.3s both;
    text-shadow: 0 0 50px rgba(0, 255, 136, 0.3);
    transition: opacity 0.5s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #cccccc;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    transition: opacity 0.5s ease;
}

.hero-btn {
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    color: #000000;
    border: 3px solid #00ff88;
    padding: 1.5rem 4rem;
    font-weight: 900;
    font-size: 1.125rem;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    position: relative;
    overflow: hidden;
    clip-path: polygon(10% 0%, 90% 0%, 100% 100%, 0% 100%);
    text-decoration: none;
    display: inline-block;
}

.hero-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

.hero-btn:hover::before {
    left: 100%;
}

.hero-btn:hover {
    background: transparent;
    color: #00ff88;
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 255, 136, 0.4);
    border-color: #00ff88;
}

/* Search Section */
.search-section {
    padding: 2rem 0;
    background: #111111;
    border-bottom: 2px solid #333333;
}

.search-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 2rem 2.5rem;
    border: 3px solid #333333;
    font-size: 1.25rem;
    outline: none;
    transition: all 0.4s ease;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    color: #ffffff;
    font-weight: 600;
    clip-path: polygon(2% 0%, 98% 0%, 100% 100%, 0% 100%);
    position: relative;
}

.search-input:focus {
    border-color: #00ff88;
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.3), 0 10px 30px rgba(0, 255, 136, 0.2);
    transform: translateY(-2px);
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
}

.search-input::placeholder {
    color: #666666;
}

.search-icon {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666666;
    font-size: 1.5rem;
}

/* Main Content Layout */
.main-content {
    padding: 3rem 0;
    background: #0a0a0a;
}

.content-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 3rem;
}

/* Sidebar */
.sidebar {
    background: linear-gradient(135deg, #111111 0%, #1a1a1a 100%);
    padding: 2.5rem;
    border: 3px solid #333333;
    height: fit-content;
    position: sticky;
    top: 7rem;
    clip-path: polygon(0 0, 95% 0, 100% 100%, 0% 100%);
    transition: all 0.4s ease;
    animation: slideInUp 0.8s ease-out 0.2s both;
}

.sidebar:hover {
    border-color: #00ff88;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(0, 255, 136, 0.1);
    transform: translateY(-5px);
}

.filters-title {
    font-size: 1.5rem;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 3px solid #00ff88;
    padding-bottom: 1rem;
}

.filter-group {
    margin-bottom: 2.5rem;
}

.filter-group-title {
    font-size: 1rem;
    font-weight: 700;
    color: #cccccc;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0;
    border-bottom: 1px solid #333333;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    cursor: pointer;
    padding: 1.25rem;
    transition: all 0.3s ease;
    border: 2px solid #333333;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    margin-bottom: 2px;
    position: relative;
    overflow: hidden;
    clip-path: polygon(0 0, 90% 0, 100% 100%, 0% 100%);
}

.filter-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: left 0.5s ease;
}

.filter-option:hover::before {
    left: 100%;
}

.filter-option:hover {
    background: linear-gradient(135deg, #222222 0%, #333333 100%);
    border-color: #00ff88;
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0, 255, 136, 0.2);
}

.filter-option input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #666666;
    position: relative;
    transition: all 0.2s ease;
    background: #1a1a1a;
}

.filter-option input[type="checkbox"]:checked+.checkmark {
    background: #00ff88;
    border-color: #00ff88;
}

.filter-option input[type="checkbox"]:checked+.checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #000000;
    font-size: 0.875rem;
    font-weight: bold;
}

.filter-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #cccccc;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

/* Content Area */
.content-area {
    background: #111111;
    padding: 2rem;
    border: 2px solid #333333;
}

/* Articles Header */
.articles-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #333333;
}

.articles-title {
    font-size: 2rem;
    font-weight: 900;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.articles-count {
    background: #00ff88;
    color: #000000;
    padding: 0.75rem 1.5rem;
    font-weight: 900;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    clip-path: polygon(0 0, 85% 0, 100% 100%, 15% 100%);
}

/* Articles Grid */
.articles-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-card {
    display: flex;
    gap: 2.5rem;
    padding: 2.5rem;
    border: 2px solid #333333;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    transition: all 0.4s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.6s ease-out;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(180deg, #666666 0%, #999999 100%);
    transition: all 0.4s ease;
}

.article-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: left 0.6s ease;
}

.article-card:hover {
    transform: translateX(10px) translateY(-5px);
    border-color: #00ff88;
    background: linear-gradient(135deg, #222222 0%, #333333 100%);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 255, 136, 0.2);
}

.article-card:hover::before {
    background: linear-gradient(180deg, #00ff88 0%, #00cc6a 100%);
    width: 8px;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
}

.article-card:hover::after {
    left: 100%;
}

/* Article thumbnail container */
.article-thumbnail-container {
    width: 180px;
    height: 140px;
    flex-shrink: 0;
    position: relative;
    border: 3px solid #333333;
    clip-path: polygon(0 0, 85% 0, 100% 100%, 0% 100%);
    transition: all 0.4s ease;
    overflow: hidden;
}

.article-thumbnail {
    width: 180px;
    height: 140px;
    flex-shrink: 0;
    border: 3px solid #333333;
    clip-path: polygon(0 0, 85% 0, 100% 100%, 0% 100%);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

/* Actual image */
.article-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Placeholder when no image or image fails */
.article-placeholder,
.article-thumbnail:not(.article-thumbnail-container) {
    background: linear-gradient(135deg, #333333 0%, #666666 50%, #999999 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    padding: 1rem;
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 3;
}

.placeholder-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    animation: float 3s ease-in-out infinite;
}

.placeholder-title {
    font-size: 0.875rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.75rem;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: -0.025em;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.placeholder-source {
    font-size: 0.7rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.9;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    background: rgba(0, 0, 0, 0.4);
    padding: 0.25rem 0.75rem;
    clip-path: polygon(10% 0%, 90% 0%, 100% 100%, 0% 100%);
    margin-bottom: 0.5rem;
}

.placeholder-category {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.8;
    color: #cccccc;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-5px);
    }
}

.article-thumbnail::before,
.article-thumbnail-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 255, 136, 0.2), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
    z-index: 1;
}

.article-card:hover .article-thumbnail,
.article-card:hover .article-thumbnail-container {
    border-color: #00ff88;
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.article-card:hover .article-thumbnail::before,
.article-card:hover .article-thumbnail-container::before {
    opacity: 1;
    transform: rotate(45deg) translate(100%, 100%);
}

.article-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.article-title {
    font-size: 1.5rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: -0.025em;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #ffffff 0%, #cccccc 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.article-card:hover .article-title {
    background: linear-gradient(135deg, #00ff88 0%, #ffffff 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transform: translateY(-2px);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 2rem;
    font-size: 0.875rem;
    color: #999999;
    margin-bottom: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-author {
    font-weight: 700;
    color: #cccccc;
}

.article-source {
    background: linear-gradient(135deg, #ff3366 0%, #cc2952 100%);
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    clip-path: polygon(15% 0%, 100% 0%, 85% 100%, 0% 100%);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.article-source::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.article-card:hover .article-source::before {
    left: 100%;
}

.article-card:hover .article-source {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(255, 51, 102, 0.4);
}

.article-description {
    color: #cccccc;
    font-size: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-weight: 400;
}

/* Load More */
.load-more-container {
    text-align: center;
}

.load-more-btn {
    background: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    color: #000000;
    border: 3px solid #00ff88;
    padding: 1.5rem 5rem;
    font-weight: 900;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 1.125rem;
    clip-path: polygon(10% 0%, 90% 0%, 100% 100%, 0% 100%);
    position: relative;
    overflow: hidden;
}

.load-more-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

.load-more-btn:hover::before {
    left: 100%;
}

.load-more-btn:hover {
    background: transparent;
    color: #00ff88;
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 255, 136, 0.4);
}

.load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    background: #333333;
    color: #666666;
    border-color: #333333;
}

.load-more-btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Clear Filters Button */
.clear-filters-btn {
    width: 100%;
    background: linear-gradient(135deg, #ff3366 0%, #cc2952 100%);
    color: #ffffff;
    border: 3px solid #ff3366;
    padding: 1.25rem;
    font-weight: 900;
    cursor: pointer;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: 2.5rem;
    clip-path: polygon(5% 0%, 95% 0%, 100% 100%, 0% 100%);
    position: relative;
    overflow: hidden;
}

.clear-filters-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.clear-filters-btn:hover::before {
    left: 100%;
}

.clear-filters-btn:hover {
    background: transparent;
    color: #ff3366;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 30px rgba(255, 51, 102, 0.4);
}

/* Loading */
.loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 2rem;
    background: linear-gradient(135deg, #111111 0%, #1a1a1a 100%);
    padding: 3rem 4rem;
    border: 3px solid #00ff88;
    z-index: 1000;
    font-weight: 700;
    color: #ffffff;
    clip-path: polygon(5% 0%, 95% 0%, 100% 100%, 0% 100%);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 50px rgba(0, 255, 136, 0.3);
    animation: fadeIn 0.5s ease-out;
}

.loading-spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid #333333;
    border-top: 4px solid #00ff88;
    border-right: 4px solid #00cc6a;
    animation: spin 1s linear infinite;
    position: relative;
}

.loading-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1rem;
    height: 1rem;
    background: #00ff88;
    transform: translate(-50%, -50%);
    animation: pulse 1s ease-in-out infinite;
}

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.8);
    }
}

/* Responsive Design - Mobile First Approach */

/* Large tablets and small desktops */
@media (max-width: 1200px) {
    .content-layout {
        grid-template-columns: 320px 1fr;
        gap: 2rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }
    
    .container {
        padding: 0 1.5rem;
    }
}

/* Tablets */
@media (max-width: 1024px) {
    .content-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .sidebar {
        position: static;
        order: 2;
        clip-path: polygon(0 0, 100% 0, 98% 100%, 0% 100%);
        padding: 2rem;
    }

    .content-area {
        order: 1;
        padding: 2rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .nav-link {
        padding: 1rem 1.5rem;
        font-size: 0.8rem;
    }
    
    .hero {
        padding: 5rem 0;
    }
    
    .main-content {
        padding: 2.5rem 0;
    }
}

/* Mobile landscape and small tablets */
@media (max-width: 768px) {
    .hero {
        padding: 4rem 0;
    }

    .hero-title {
        font-size: 2.5rem;
        line-height: 1.1;
        margin-bottom: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
        margin-bottom: 2rem;
    }

    .hero-btn {
        padding: 1.25rem 3rem;
        font-size: 1rem;
        margin-top: 1rem;
    }

    .article-card {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.75rem;
        margin-bottom: 1.5rem;
    }

    .article-thumbnail,
    .article-thumbnail-container {
        width: 100%;
        height: 200px;
        clip-path: polygon(0 0, 100% 0, 95% 100%, 0% 100%);
    }

    /* Mobile navigation */
    .nav {
        display: none;
    }

    /* Mobile menu button */
    .mobile-menu-btn {
        display: block;
        background: none;
        border: 2px solid #00ff88;
        color: #00ff88;
        padding: 0.75rem;
        cursor: pointer;
        font-size: 1.25rem;
        transition: all 0.3s ease;
        clip-path: polygon(10% 0%, 90% 0%, 100% 100%, 0% 100%);
    }

    .mobile-menu-btn:hover {
        background: #00ff88;
        color: #000;
        transform: scale(1.05);
    }

    /* Mobile menu overlay */
    .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
        z-index: 1000;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .mobile-menu.active {
        transform: translateX(0);
    }

    .mobile-menu-close {
        position: absolute;
        top: 2rem;
        right: 2rem;
        background: none;
        border: 2px solid #ff3366;
        color: #ff3366;
        padding: 0.75rem;
        cursor: pointer;
        font-size: 1.5rem;
        transition: all 0.3s ease;
    }

    .mobile-menu-close:hover {
        background: #ff3366;
        color: #fff;
    }

    .mobile-nav-link {
        text-decoration: none;
        color: #fff;
        font-weight: 700;
        font-size: 1.5rem;
        padding: 1rem 2rem;
        text-transform: uppercase;
        letter-spacing: 0.1em;
        transition: all 0.3s ease;
        border: 2px solid transparent;
    }

    .mobile-nav-link:hover,
    .mobile-nav-link.active {
        color: #00ff88;
        border-color: #00ff88;
        transform: scale(1.1);
    }

    .hero-tags {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        margin-bottom: 2.5rem;
    }

    .hero-tag {
        padding: 0.75rem 1.5rem;
        font-size: 0.8rem;
    }

    .search-input {
        padding: 1.5rem 2rem;
        font-size: 1.125rem;
    }

    .header-content {
        padding: 1rem 0;
        flex-wrap: wrap;
    }

    .logo {
        gap: 0.75rem;
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .logo-divider {
        height: 1.5px;
    }

    .logo-subtitle {
        font-size: 0.85rem;
    }

    .logo-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.5rem;
    }

    /* Improve touch targets */
    .filter-option {
        padding: 1.25rem;
        margin-bottom: 3px;
        min-height: 44px;
    }

    .hero-btn,
    .load-more-btn,
    .clear-filters-btn {
        min-height: 44px;
        touch-action: manipulation;
    }

    .article-card {
        touch-action: manipulation;
    }

    .articles-title {
        font-size: 1.75rem;
    }

    .article-title {
        font-size: 1.3rem;
        line-height: 1.2;
    }
}

/* Mobile portrait */
@media (max-width: 640px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 3rem 0;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
        line-height: 1.1;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
        padding: 0 1rem;
    }

    .hero-btn {
        padding: 1rem 2.5rem;
        font-size: 0.9rem;
        width: auto;
        min-width: 200px;
    }

    .sidebar,
    .content-area {
        padding: 1.5rem;
        border-radius: 8px;
    }

    .content-layout {
        gap: 1.5rem;
    }

    .article-card {
        padding: 1.5rem;
        border-radius: 8px;
    }

    .article-title {
        font-size: 1.25rem;
        line-height: 1.3;
    }

    .article-thumbnail,
    .article-thumbnail-container {
        height: 180px;
        border-radius: 4px;
    }

    .search-section {
        padding: 1.5rem 0;
    }

    .search-input {
        padding: 1.25rem 1.5rem;
        font-size: 1rem;
    }

    .main-content {
        padding: 2rem 0;
    }

    .filter-option {
        padding: 1rem;
        font-size: 0.9rem;
    }

    .loading {
        padding: 2rem 2.5rem;
        margin: 0 1rem;
        font-size: 0.9rem;
    }

    /* Improve readability on small screens */
    .article-meta {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }

    .article-description {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .filters-title {
        font-size: 1.3rem;
    }

    .filter-group-title {
        font-size: 0.9rem;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }

    .hero {
        padding: 2.5rem 0;
    }

    .hero-title {
        font-size: 1.75rem;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
        padding: 0 0.5rem;
        margin-bottom: 1.5rem;
    }

    .hero-btn {
        padding: 0.875rem 2rem;
        font-size: 0.8rem;
        min-width: 180px;
    }

    .article-card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }

    .article-title {
        font-size: 1.125rem;
        line-height: 1.25;
    }

    .sidebar,
    .content-area {
        padding: 1.25rem;
    }

    .logo {
        gap: 0.5rem;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .logo-divider {
        height: 1px;
    }

    .logo-subtitle {
        font-size: 0.75rem;
        letter-spacing: 0.08em;
    }

    .logo-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.25rem;
    }

    .header-content {
        padding: 0.75rem 0;
    }

    .search-input {
        padding: 1rem 1.25rem;
        font-size: 0.95rem;
    }

    .hero-tags {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }

    .hero-tag {
        padding: 0.5rem 1.25rem;
        font-size: 0.75rem;
    }

    .article-thumbnail,
    .article-thumbnail-container {
        height: 160px;
    }

    .article-meta {
        font-size: 0.8rem;
    }

    .article-description {
        font-size: 0.9rem;
    }

    .filters-title {
        font-size: 1.2rem;
    }

    .filter-option {
        padding: 0.875rem;
    }

    .load-more-btn,
    .clear-filters-btn {
        padding: 1rem 2rem;
        font-size: 0.85rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: #00ff88;
    color: #000000;
}

/* Focus styles */
button:focus,
input:focus {
    outline: 2px solid #00ff88;
    outline-offset: 2px;
}

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

::-webkit-scrollbar-track {
    background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
    background: #333333;
}

::-webkit-scrollbar-thumb:hover {
    background: #00ff88;
}

/* Additional Modern Effects */

/* Smooth page transitions */
.page-transition {
    opacity: 0;
    transform: translateY(20px);
    animation: pageLoad 0.8s ease-out forwards;
}

@keyframes pageLoad {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced focus states for accessibility */
*:focus-visible {
    outline: 3px solid #00ff88;
    outline-offset: 2px;
}

/* Custom selection colors */
::selection {
    background: rgba(0, 255, 136, 0.3);
    color: #ffffff;
}

::-moz-selection {
    background: rgba(0, 255, 136, 0.3);
    color: #ffffff;
}

/* Enhanced scrollbar for webkit browsers */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
    border-left: 2px solid #333333;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #333333 0%, #666666 100%);
    border-left: 2px solid #1a1a1a;
    transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #00ff88 0%, #00cc6a 100%);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

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

/* Loading state for images */
img {
    transition: opacity 0.3s ease;
}

img[src=""],
img:not([src]) {
    opacity: 0;
}

/* Enhanced hover effects for interactive elements */
button,
.nav-link,
.filter-option,
.article-card {
    will-change: transform;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .article-card {
        border-width: 3px;
    }

    .hero-title {
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    }

    .nav-link:hover,
    .nav-link.active {
        border: 3px solid #ffffff;
    }
}

/* Dark mode enhancements (already dark, but for consistency) */
@media (prefers-color-scheme: dark) {
    body {
        background: #000000;
    }
}

/* Print styles */
@media print {

    .header,
    .sidebar,
    .search-section,
    .load-more-container {
        display: none !important;
    }

    .article-card {
        break-inside: avoid;
        border: 1px solid #333333 !important;
        background: #ffffff !important;
        color: #000000 !important;
    }

    .article-title {
        color: #000000 !important;
    }
}

/* Performance optimizations */
.article-card,
.filter-option,
.nav-link {
    contain: layout style paint;
}

/* GPU acceleration for smooth animations */
.hero::before,
.hero::after,
.article-card::before,
.article-card::after,
.loading-spinner {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Enhan
ced image handling */
.article-image[style*="display: none"]+.article-placeholder {
    display: flex !important;
}

/* Improved placeholder styling */
.article-placeholder {
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 50%, #4a4a4a 100%);
    position: relative;
    overflow: hidden;
}

.article-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

/* Enhanced icon classes for different content types */
.icon-bitcoin {
    color: #f7931a;
}

.icon-ethereum {
    color: #627eea;
}

.icon-defi {
    color: #00d4aa;
}

.icon-nft {
    color: #ff6b6b;
}

.icon-regulation {
    color: #ffd93d;
}

.icon-analysis {
    color: #6c5ce7;
}

.icon-markets {
    color: #00b894;
}

.icon-trading {
    color: #e17055;
}

.icon-altcoins {
    color: #a29bfe;
}

.icon-security {
    color: #fd79a8;
}

.icon-mining {
    color: #fdcb6e;
}

.icon-staking {
    color: #55a3ff;
}

}

.icon-default {
    color: #ddd;
}

/* Very small mobile devices (iPhone SE, etc.) */
@media (max-width: 360px) {
    .container {
        padding: 0 0.5rem;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero-title {
        font-size: 1.5rem;
        line-height: 1.1;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 0.85rem;
        margin-bottom: 1.5rem;
        padding: 0;
    }

    .hero-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.75rem;
        width: 100%;
        max-width: 280px;
        min-width: auto;
    }

    .article-card {
        padding: 1rem;
        gap: 1rem;
        margin-bottom: 0.75rem;
    }

    .article-title {
        font-size: 1rem;
        line-height: 1.2;
    }

    .sidebar,
    .content-area {
        padding: 1rem;
    }

    .search-input {
        padding: 1rem 1.25rem;
        font-size: 0.9rem;
    }

    .logo {
        gap: 0.4rem;
    }

    .logo-text {
        font-size: 1.1rem;
    }

    .logo-subtitle {
        font-size: 0.65rem;
        letter-spacing: 0.06em;
    }

    .logo-icon {
        width: 2.25rem;
        height: 2.25rem;
        font-size: 1.1rem;
    }

    .header-content {
        padding: 0.5rem 0;
    }

    .hero-tags {
        margin-bottom: 1.5rem;
    }

    .hero-tag {
        padding: 0.4rem 1rem;
        font-size: 0.7rem;
    }

    .article-thumbnail,
    .article-thumbnail-container {
        height: 140px;
    }

    .content-layout {
        gap: 1rem;
    }

    .main-content {
        padding: 1.5rem 0;
    }

    .search-section {
        padding: 1rem 0;
    }

    .filter-option {
        padding: 0.75rem;
        font-size: 0.85rem;
    }

    .filters-title {
        font-size: 1.1rem;
    }

    .articles-title {
        font-size: 1.4rem;
    }

    .placeholder-title {
        font-size: 0.75rem;
    }

    .placeholder-source {
        font-size: 0.6rem;
    }

    .load-more-btn,
    .clear-filters-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.8rem;
    }
}

/* Performance optimizations for smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Enhanced loading states */
.article-card.loading {
    opacity: 0.7;
    pointer-events: none;
}

.article-card.loaded {
    opacity: 1;
    pointer-events: auto;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {

    .article-card,
    .filter-option,
    .nav-link,
    .hero-btn,
    .load-more-btn {
        transition: none;
    }

    .loading-spinner {
        animation: none;
    }
}

/* High contrast mode enhancements */
@media (prefers-contrast: high) {
    .article-card {
        border-width: 4px;
    }

    .filter-option:hover {
        background: #ffffff;
        color: #000000;
    }

    .nav-link:hover {
        background: #ffffff;
        color: #000000;
    }
}

/* Final touch - ensure all elements are properly styled */
.article-image.loaded {
    opacity: 1;
}

.article-image:not(.loaded) {
    opacity: 0;
}

/* Ensure proper z-index stacking */
.header {
    z-index: 1000;
}

.loading {
    z-index: 9999;
}

.sidebar {
    z-index: 10;
}

/* Final animations and transitions */
.article-card {
    animation: slideInUp 0.6s ease-out both;
}

.filter-option {
    animation: slideInUp 0.4s ease-out both;
}

/* Ensure proper text rendering on all devices */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

,
#4a4a4a 100%);
position: relative;
}

.article-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

.article-placeholder::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shine 6s ease-in-out infinite;
    transform: rotate(45deg);
}

@keyframes shine {
    0% {
        transform: rotate(45deg) translate(-100%, -100%);
    }

    50% {
        transform: rotate(45deg) translate(0%, 0%);
    }

    100% {
        transform: rotate(45deg) translate(100%, 100%);
    }
}

/* Loading state for images */
.article-image {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.article-image.loaded {
    opacity: 1;
}

/* Fallback for broken images */
.article-image[alt]:after {
    content: "🖼️";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    color: #666666;
}

/* 
Responsive placeholder styles */
@media (max-width: 768px) {
    .placeholder-content {
        padding: 0.5rem;
    }

    .placeholder-icon {
        font-size: 1.75rem;
        margin-bottom: 0.5rem;
    }

    .placeholder-title {
        font-size: 0.8rem;
        margin-bottom: 0.5rem;
        -webkit-line-clamp: 2;
    }

    .placeholder-source {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
        margin-bottom: 0.25rem;
    }

    .placeholder-category {
        font-size: 0.55rem;
        padding: 0.15rem 0.4rem;
    }
}

@media (max-width: 640px) {
    .placeholder-icon {
        font-size: 1.5rem;
        margin-bottom: 0.4rem;
    }

    .placeholder-title {
        font-size: 0.75rem;
        margin-bottom: 0.4rem;
    }

    .placeholder-source {
        font-size: 0.6rem;
    }

    .placeholder-category {
        font-size: 0.5rem;
    }
}

/*
 Professional Icon Styles */
.placeholder-icon {
    font-family: 'Inter', monospace;
    font-weight: 900;
    letter-spacing: 0;
    text-rendering: optimizeLegibility;
}

/* Custom CSS Icons */
.icon-crypto {
    position: relative;
    display: inline-block;
    width: 2rem;
    height: 2rem;
}

.icon-crypto::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid currentColor;
    border-radius: 50%;
}

.icon-crypto::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0.75rem;
    height: 0.75rem;
    background: currentColor;
    border-radius: 50%;
}

/* Enhanced search icon */
.search-icon {
    font-size: 1.5rem !important;
    font-weight: 900;
    color: #666666;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
    transition: all 0.3s ease;
}

.search-input:focus+.search-icon {
    color: #00ff88;
    text-shadow: 0 0 15px rgba(0, 255, 136, 0.6);
    transform: scale(1.1);
}

/* Professional symbol styling */
.placeholder-content .placeholder-icon {
    font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 800;
    font-style: normal;
    text-rendering: geometricPrecision;
    -webkit-font-smoothing: antialiased;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}
/* P
erformance optimizations */
.logo-divider,
.logo-subtitle,
.header::before,
.article-card,
.filter-option,
.nav-link,
.hero-btn,
.load-more-btn {
    will-change: transform;
    contain: layout style paint;
}

.hero::before,
.hero::after,
.article-card::before,
.article-card::after {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Reduced motion support */
@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;
    }
}