:root {
    --primary-color: #0f4c81;
    /* Classic Blue */
    --primary-light: #e6f0fa;
    --primary-hover: #0c3e69;
    --accent-color: #ff6b6b;
    --text-main: #334155;
    --text-light: #64748b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.15), 0 6px 6px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e3a8a 100%);
    color: white;
    padding: 60px 0;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

.header-text {
    width: 100%;
}

.title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 0;
}

.neon-wakey {
    color: #00f3ff;
    text-shadow: 0 0 5px #00f3ff, 0 0 10px #00f3ff, 0 0 20px #00f3ff, 0 0 40px #00a8ff;
    font-weight: 800;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.header-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.header-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white !important;
    padding: 12px 24px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: var(--transition);
    white-space: nowrap;
}

.primary-btn {
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    box-shadow: 0 4px 15px rgba(0, 114, 255, 0.4);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 114, 255, 0.6);
    background: linear-gradient(135deg, #0072ff, #00c6ff);
}

.contact-btn {
    background: linear-gradient(135deg, #ff6b6b, #ee5253);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.6);
    background: linear-gradient(135deg, #ee5253, #ff6b6b);
}

/* Controls Section (Search & Filter) */
.controls-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    margin: -30px auto 40px;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 10;
}

.search-container {
    position: relative;
    margin-bottom: 25px;
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 1.5rem;
}

#searchInput {
    width: 100%;
    padding: 16px 20px 16px 50px;
    font-size: 1.1rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    outline: none;
    transition: var(--transition);
    font-family: inherit;
    background-color: var(--bg-color);
}

#searchInput:focus {
    border-color: var(--primary-color);
    background-color: white;
    box-shadow: 0 0 0 4px var(--primary-light);
}

.filter-title {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--text-main);
}

.category-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.category-btn {
    padding: 10px 20px;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-light);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.category-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--primary-light);
}

.category-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(15, 76, 129, 0.3);
}

/* Results Section */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#resultsCount {
    font-weight: 500;
    color: var(--text-light);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 60px;
}

/* Case Card */
.case-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.category-tag {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    display: inline-block;
}

.case-no {
    color: var(--text-light);
    font-size: 0.85rem;
    font-weight: 700;
}

.case-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
    line-height: 1.4;
}

.card-body {
    flex-grow: 1;
}

.info-group {
    margin-bottom: 15px;
}

.info-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.info-label i {
    color: var(--primary-color);
}

.info-content {
    font-size: 0.95rem;
    color: var(--text-main);
}

.solution-box {
    background-color: #f0fdf4;
    border-left: 4px solid #22c55e;
    padding: 12px;
    border-radius: 0 8px 8px 0;
    margin-top: 15px;
}

.solution-box .info-label i {
    color: #22c55e;
}

.prevention-box {
    background-color: #fefce8;
    border-left: 4px solid #eab308;
    padding: 12px;
    border-radius: 0 8px 8px 0;
    margin-top: 15px;
}

.prevention-box .info-label i {
    color: #eab308;
}

.card-footer {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background-color: var(--bg-color);
    color: var(--text-light);
    border: 1px solid var(--border-color);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
}

/* No Results state */
.no-results {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.no-results.hidden {
    display: none;
}

.no-results i {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: 15px;
    opacity: 0.5;
}

.no-results p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Footer */
.footer {
    background-color: white;
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    margin-top: auto;
}

/* Responsive */
@media (max-width: 900px) {
    .header-buttons {
        position: static;
        transform: none;
        margin-top: 15px;
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .header-link-btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
    }

    .header-link-btn:hover {
        transform: translateY(-2px);
    }

    .title-wrapper {
        flex-direction: column;
        margin-bottom: 20px;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .header h1 {
        font-size: 1.8rem;
    }

    .controls-section {
        margin: -20px 10px 30px;
        padding: 20px;
    }

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