:root {
    --bg-color: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent: #0284c7;
    --accent-hover: #0369a1;
    --accent-glow: rgba(2, 132, 199, 0.4);
    
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.1);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

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

/* Background Animated Blobs */
.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}
.blob-1, .blob-2, .blob-3 {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s infinite alternate ease-in-out;
}
.blob-1 { width: 50vw; height: 50vw; background: #2563eb; top: -10vw; left: -10vw; animation-delay: 0s; }
.blob-2 { width: 40vw; height: 40vw; background: #7c3aed; bottom: -10vw; right: -5vw; animation-delay: -5s; }
.blob-3 { width: 35vw; height: 35vw; background: #0ea5e9; top: 30vw; left: 40vw; animation-delay: -10s; }

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5vw, 5vw) scale(1.1); }
}

/* Layout */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.glass-header {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: 2.5rem 0;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: var(--glass-shadow);
}
.back-home-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 1.5rem;
    transition: color 0.3s ease, transform 0.3s ease;
}
.back-home-link:hover {
    color: var(--text-primary);
    transform: translateX(-4px);
}
.glass-header h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #0f172a, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}
.glass-header p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
}

/* Search */
.search-container input {
    width: 100%;
    max-width: 600px;
    padding: 0.9rem 1.4rem;
    border-radius: 9999px;
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.search-container input::placeholder {
    color: var(--text-secondary);
}
.search-container input:focus {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Main Grid */
main {
    padding: 4rem 0;
    flex-grow: 1;
}
.volumes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2.5rem;
}

/* Card Styles */
.volume-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease, border-color 0.4s ease;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    opacity: 0;
}

@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(40px); }
    100% { opacity: 1; transform: translateY(0); }
}

.volume-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #ec4899);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.volume-card:hover {
    transform: translateY(-8px) !important;
    box-shadow: var(--glass-shadow);
    border-color: rgba(2, 132, 199, 0.2);
}
.volume-card:hover::before {
    transform: scaleX(1);
}

.volume-number {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 0.8rem;
}
.volume-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    line-height: 1.35;
    color: #1e293b;
}

/* Works List inside Card */
.works-list {
    list-style: none;
    margin: 0;
    padding: 0;
    flex-grow: 1;
}
.work-item {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    padding-left: 1.2rem;
    position: relative;
    transition: color 0.2s ease, transform 0.2s ease;
    line-height: 1.4;
}
.work-item::before {
    content: '→';
    position: absolute;
    left: 0;
    top: 0px;
    color: var(--accent);
    opacity: 0.6;
    font-size: 1rem;
    transition: transform 0.2s ease;
}
.work-item:hover {
    color: var(--text-primary);
    transform: translateX(2px);
}
.work-item:hover::before {
    transform: translateX(2px);
    opacity: 1;
}

.work-item.author-item {
    font-weight: 600;
    color: #0f172a;
    margin-top: 1.2rem;
    padding-left: 0;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding-bottom: 0.4rem;
}
.work-item.author-item::before {
    display: none;
}
.work-item.author-item:hover {
    transform: none;
    color: var(--accent);
}

/* Footer */
.glass-footer {
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
    font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
    .glass-header h1 {
        font-size: 2.2rem;
    }
    .volumes-grid {
        grid-template-columns: 1fr;
    }
    .container {
        width: 92%;
    }
}