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

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #f093fb;
    --glass: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #fff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    animation: gradientBG 15s ease infinite;
    min-height: 100vh;
    overflow-x: hidden;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 60px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.header-content h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #fff 0%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-content .subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    margin-top: 5px;
}

.date-display {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 300;
}

main {
    padding: 60px 0;
    min-height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slider-container {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 80px;
}

.slider-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--glass);
    backdrop-filter: blur(10px);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
    z-index: 10;
}

.slider-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.slider-btn.prev { left: 10px; }
.slider-btn.next { right: 10px; }

.day-card {
    min-width: 100%;
    padding: 40px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    margin: 0 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.5s ease;
}

.day-card.active {
    opacity: 1;
    transform: scale(1);
}

.day-card .date-badge {
    display: inline-block;
    background: linear-gradient(135deg, #f093fb 0%, #667eea 100%);
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.day-card h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #fff;
}

.day-card p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    font-size: 1.05rem;
}

.entries-list {
    margin-top: 25px;
}

.entry-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 4px solid #f093fb;
    transition: all 0.3s ease;
}

.entry-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(5px);
}

.entry-item .time {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 5px;
}

.entry-item .title {
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
}

.entry-item .content {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 40px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #f093fb;
    transform: scale(1.3);
    box-shadow: 0 0 20px rgba(240, 147, 251, 0.5);
}

footer {
    text-align: center;
    padding: 30px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

/* 3D Card Effect */
.day-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.day-card:hover {
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
        padding: 30px 20px;
    }
    
    .header-content h1 {
        font-size: 2rem;
    }
    
    .slider-container {
        padding: 0 60px;
    }
    
    .day-card {
        padding: 30px 20px;
    }
    
    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

/* Floating particles background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(240, 147, 251, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}