:root {
    --color-primary: #0A4D68;
    --color-secondary: #088395;
    --color-accent: #05BFDB;
    --color-bg: #FAFBFC;
    --color-surface: #FFFFFF;
    --color-text: #1A1D29;
    --color-text-muted: #5A5F73;
    --color-border: #E2E8F0;
    --color-success: #059669;
    --color-error: #DC2626;
    
    --font-display: 'Crimson Pro', serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --shadow-sm: 0 1px 3px rgba(10, 77, 104, 0.08);
    --shadow-md: 0 4px 12px rgba(10, 77, 104, 0.12);
    --shadow-lg: 0 8px 24px rgba(10, 77, 104, 0.16);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: var(--transition);
}

.logo-synergy {
    color: var(--color-primary);
}

.logo-omics {
    color: var(--color-accent);
}

.logo:hover {
    transform: translateY(-2px);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

/* Flash Messages */
.flash-container {
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 2rem;
}

.flash {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.flash-success {
    background: rgba(5, 150, 105, 0.1);
    color: var(--color-success);
    border-left: 4px solid var(--color-success);
}

.flash-error {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-error);
    border-left: 4px solid var(--color-error);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: 3rem 0;
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 0 auto 4rem;
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(5, 191, 219, 0.15) 0%, transparent 70%);
    pointer-events: none;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.5; }
    50% { transform: translateX(-50%) scale(1.1); opacity: 0.7; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Categories */
.categories {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.category-tag {
    padding: 0.5rem 1.25rem;
    background: var(--color-surface);
    color: var(--color-text-muted);
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.category-tag:hover,
.category-tag.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.post-card {
    background: var(--color-surface);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    animation: fadeInScale 0.5s ease-out backwards;
    animation-delay: calc(var(--card-index) * 0.1s);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.post-card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
    background: var(--color-border);
}

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

.post-card:hover .post-card-image img {
    transform: scale(1.05);
}

.post-card-content {
    padding: 2rem;
}

.post-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.post-card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.post-card-title a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.post-card-title a:hover {
    color: var(--color-secondary);
}

.post-excerpt {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.post-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.post-date {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.post-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(5, 191, 219, 0.1);
    color: var(--color-secondary);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Single Post */
.post-header {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
    animation: fadeInUp 0.6s ease-out;
}

.post-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.post-body {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-surface);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4,
.post-body h5,
.post-body h6 {
    font-family: var(--font-display);
    color: var(--color-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.post-body h1 { font-size: 2.5rem; }
.post-body h2 { font-size: 2rem; }
.post-body h3 { font-size: 1.5rem; }

.post-body p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    text-align: justify;
}

.post-body a {
    color: var(--color-secondary);
    text-decoration: none;
    border-bottom: 2px solid rgba(8, 131, 149, 0.3);
    transition: var(--transition);
}

.post-body a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.post-body code {
    font-family: var(--font-mono);
    background: rgba(10, 77, 104, 0.05);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--color-secondary);
}

.post-body pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 2rem 0;
}

.post-body pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.post-body ul,
.post-body ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.post-body li {
    margin-bottom: 0.5rem;
}

.post-body blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: 1.5rem;
    margin: 2rem 0;
    color: var(--color-text-muted);
    font-style: italic;
}

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: white;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .post-body {
        padding: 2rem 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Loading Animation */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    animation: shimmer 2s infinite;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.5) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background-size: 1000px 100%;
}

<style>
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-body);
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(5, 191, 219, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-muted);
    opacity: 0.6;
}
</style>