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

:root {
    --primary: #ff7f50;
    --primary-light: #ffa07a;
    --secondary: #ffb347;
    --accent: #ff6b6b;
    --accent-alt: #ffd166;
    
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --bg-card: #1e1e30;
    --bg-card-hover: #252538;
    
    --text-primary: #e6e6e6;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    
    --border-color: #272741;
    --shadow: rgba(0, 0, 0, 0.2);
    --shadow-hover: rgba(0, 0, 0, 0.3);
    
    --color-info: #4a90e2;
    --color-warning: #ff9800;
    --color-update: #4caf50;
    
    --hero-grid-color: rgba(255, 127, 80, 0.12);
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    --font-family: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    
    --transition: all 0.3s ease;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(var(--hero-grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--hero-grid-color) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: 
        radial-gradient(circle at 15% 22%, transparent 0%, transparent 30px, black 90px),
        radial-gradient(circle at 18% 28%, transparent 0%, transparent 45px, black 110px),
        radial-gradient(circle at 22% 25%, transparent 0%, transparent 25px, black 85px),
        
        radial-gradient(circle at 70% 40%, transparent 0%, transparent 55px, black 130px),
        radial-gradient(circle at 77% 48%, transparent 0%, transparent 40px, black 100px),
        radial-gradient(circle at 73% 52%, transparent 0%, transparent 30px, black 90px),
        
        radial-gradient(circle at 38% 72%, transparent 0%, transparent 50px, black 120px),
        radial-gradient(circle at 45% 78%, transparent 0%, transparent 35px, black 95px),
        radial-gradient(circle at 42% 69%, transparent 0%, transparent 28px, black 80px),
        
        radial-gradient(circle at 85% 15%, transparent 0%, transparent 42px, black 105px),
        radial-gradient(circle at 89% 20%, transparent 0%, transparent 30px, black 85px),
        
        radial-gradient(circle at 10% 65%, transparent 0%, transparent 48px, black 115px),
        radial-gradient(circle at 14% 72%, transparent 0%, transparent 33px, black 88px);
    mask-composite: intersect;
    -webkit-mask-image: 
        radial-gradient(circle at 15% 22%, transparent 0%, transparent 30px, black 90px),
        radial-gradient(circle at 18% 28%, transparent 0%, transparent 45px, black 110px),
        radial-gradient(circle at 22% 25%, transparent 0%, transparent 25px, black 85px),
        
        radial-gradient(circle at 70% 40%, transparent 0%, transparent 55px, black 130px),
        radial-gradient(circle at 77% 48%, transparent 0%, transparent 40px, black 100px),
        radial-gradient(circle at 73% 52%, transparent 0%, transparent 30px, black 90px),
        
        radial-gradient(circle at 38% 72%, transparent 0%, transparent 50px, black 120px),
        radial-gradient(circle at 45% 78%, transparent 0%, transparent 35px, black 95px),
        radial-gradient(circle at 42% 69%, transparent 0%, transparent 28px, black 80px),
        
        radial-gradient(circle at 85% 15%, transparent 0%, transparent 42px, black 105px),
        radial-gradient(circle at 89% 20%, transparent 0%, transparent 30px, black 85px),
        
        radial-gradient(circle at 10% 65%, transparent 0%, transparent 48px, black 115px),
        radial-gradient(circle at 14% 72%, transparent 0%, transparent 33px, black 88px);
    -webkit-mask-composite: source-in;
    animation: gridFade 8s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes gridFade {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.6;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.header h1 i {
    color: var(--primary);
    filter: drop-shadow(0 2px 4px rgba(255, 127, 80, 0.3));
}

.header .subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 400;
}

.error {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--accent);
}

.error i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.error.hidden {
    display: none;
}

.announcements-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex: 1;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.announcement-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition);
    box-shadow: var(--card-shadow);
    position: relative;
}

.announcement-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--shadow-hover);
    border-color: var(--primary-light);
}

.announcement-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.announcement-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xl);
    transition: var(--transition);
}

.announcement-card:hover .announcement-icon {
    transform: scale(1.1) rotate(5deg);
}

.announcement-icon.info {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(74, 144, 226, 0.2));
    color: var(--color-info);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.2);
}

.announcement-icon.warning {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1), rgba(255, 152, 0, 0.2));
    color: var(--color-warning);
    box-shadow: 0 4px 12px rgba(255, 152, 0, 0.2);
}

.announcement-icon.update {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1), rgba(76, 175, 80, 0.2));
    color: var(--color-update);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.2);
}

.announcement-title-wrapper {
    flex: 1;
}

.announcement-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.announcement-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text-tertiary);
}

.announcement-date,
.announcement-category {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.announcement-category {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.announcement-category.info {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(74, 144, 226, 0.15));
    color: var(--color-info);
    border: 1px solid rgba(74, 144, 226, 0.2);
}

.announcement-category.warning {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1), rgba(255, 152, 0, 0.15));
    color: var(--color-warning);
    border: 1px solid rgba(255, 152, 0, 0.2);
}

.announcement-category.update {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1), rgba(76, 175, 80, 0.15));
    color: var(--color-update);
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.announcement-content {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.footer {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    border-top: 2px solid var(--border-color);
    margin-top: auto;
    background: var(--bg-secondary);
    width: 100%;
    position: relative;
    z-index: 1;
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .header h1 {
        font-size: 1.75rem;
    }
    
    .header .subtitle {
        font-size: var(--font-size-base);
    }
    
    .announcement-card {
        padding: var(--spacing-lg);
    }
    
    .announcement-title {
        font-size: var(--font-size-lg);
    }
    
    .announcement-content {
        font-size: var(--font-size-base);
    }
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.announcement-card {
    animation: fadeIn 0.4s ease forwards;
}

.announcement-card:nth-child(1) { animation-delay: 0.05s; }
.announcement-card:nth-child(2) { animation-delay: 0.1s; }
.announcement-card:nth-child(3) { animation-delay: 0.15s; }
.announcement-card:nth-child(4) { animation-delay: 0.2s; }
.announcement-card:nth-child(5) { animation-delay: 0.25s; }
.announcement-card:nth-child(6) { animation-delay: 0.3s; }

::-webkit-scrollbar {
  display: none;
}