/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --bg-main: #f0f4f8;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.85);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: rgba(255, 255, 255, 0.5);
    --shadow-color: rgba(99, 102, 241, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-main);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Background Shapes */
.background-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #a5b4fc, #c4b5fd);
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #99f6e4, #a5f3fc);
    bottom: 10%;
    left: -50px;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #fde68a, #fca5a5);
    top: 50%;
    right: 20%;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Filter Section */
.filter-section {
    margin-bottom: 32px;
}

.search-box {
    position: relative;
    max-width: 400px;
    margin: 0 auto 20px;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.search-box input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
    outline: none;
}

.search-box input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px var(--shadow-color);
}

/* Tags */
.tags-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.tag {
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.tag:hover {
    background: var(--bg-card-hover);
    color: var(--primary);
}

.tag.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Bento Grid */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Card */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #8b5cf6);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-icon {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.card:hover .card-icon {
    transform: translateX(4px);
}

.card-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.card-tag {
    padding: 4px 10px;
    border-radius: 12px;
    background: rgba(99, 102, 241, 0.1);
    font-size: 0.75rem;
    color: var(--primary);
}

/* Hidden state */
.card.hidden {
    display: none;
}

/* Empty state */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 24px 16px;
    }

    .title {
        font-size: 2rem;
    }

    .bento-grid {
        grid-template-columns: 1fr;
    }
}