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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        header {
            background-color: #2c5282;
            color: white;
            padding: 2rem 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        h1 {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .subtitle {
            font-size: 0.9rem;
            font-weight: 400;
            margin-bottom: 1rem;
            opacity: 0.9;
        }

        nav {
            background-color: white;
            border-bottom: 1px solid #e2e8f0;
            padding: 0;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }

        .nav-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.75rem 0;
        }

        .nav-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #2c5282;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        nav ul {
            list-style: none;
            display: flex;
            gap: 0;
            align-items: center;
        }

        nav li {
            position: relative;
        }

        nav a {
            color: #4a5568;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            padding: 1rem 1.25rem;
            display: block;
            position: relative;
        }

        nav a:hover {
            color: #2c5282;
            background-color: #f7fafc;
        }

        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background-color: #2c5282;
            transition: width 0.3s ease;
        }

        nav a:hover::after {
            width: 80%;
        }

        .nav-actions {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }

        .nav-btn {
            padding: 0.5rem 1rem;
            border-radius: 6px;
            font-size: 0.875rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            text-decoration: none;
        }

        .nav-btn-outline {
            background-color: transparent;
            color: #2c5282;
            border: 2px solid #2c5282;
        }

        .nav-btn-outline:hover {
            background-color: #2c5282;
            color: white;
        }

        .nav-btn-solid {
            background-color: #2c5282;
            color: white;
        }

        .nav-btn-solid:hover {
            background-color: #2a4365;
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgba(44, 82, 130, 0.3);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #2c5282;
            cursor: pointer;
            padding: 0.5rem;
        }

        @media (max-width: 768px) {
            .nav-content {
                flex-wrap: wrap;
            }

            nav ul {
                flex-direction: column;
                gap: 0;
                width: 100%;
                display: none;
                align-items: flex-start;
                padding: 1rem 0;
            }

            nav ul.active {
                display: flex;
            }

            nav a {
                padding: 0.75rem 1rem;
                width: 100%;
            }

            .nav-actions {
                width: 100%;
                justify-content: stretch;
                margin-top: 1rem;
            }

            .nav-actions.active {
                display: flex;
            }

            .nav-actions:not(.active) {
                display: none;
            }

            .nav-btn {
                flex: 1;
            }

            .mobile-menu-btn {
                display: block;
            }
        }

        main {
            padding: 3rem 0;
        }

        .search-box {
            background-color: white;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }

        .search-box input {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #e2e8f0;
            border-radius: 4px;
            font-size: 1rem;
            margin-bottom: 1rem;
        }

        .search-box input:focus {
            outline: none;
            border-color: #2c5282;
        }

        .filter-section {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .filter-label {
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 0.5rem;
            display: block;
        }

        .filter-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }

        .filter-btn {
            padding: 0.5rem 1rem;
            border: 2px solid #e2e8f0;
            background-color: white;
            border-radius: 6px;
            cursor: pointer;
            font-size: 0.875rem;
            font-weight: 500;
            color: #4a5568;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .filter-btn:hover {
            border-color: #2c5282;
            color: #2c5282;
            background-color: #f7fafc;
        }

        .filter-btn.active {
            background-color: #2c5282;
            color: white;
            border-color: #2c5282;
        }

        .filter-btn .count {
            background-color: #edf2f7;
            color: #4a5568;
            padding: 0.125rem 0.5rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .filter-btn.active .count {
            background-color: rgba(255, 255, 255, 0.3);
            color: white;
        }

        .results-info {
            margin: 1.5rem 0;
            padding: 1rem;
            background-color: #edf2f7;
            border-radius: 6px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .results-count {
            font-weight: 600;
            color: #2d3748;
        }

        .clear-filters {
            background: none;
            border: none;
            color: #2c5282;
            cursor: pointer;
            font-weight: 500;
            text-decoration: underline;
        }

        .clear-filters:hover {
            color: #2a4365;
        }

        .journal-list {
            display: grid;
            gap: 1.5rem;
        }

        .journal-item {
            background-color: white;
            border-radius: 8px;
            padding: 1.5rem;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
            transition: transform 0.2s, box-shadow 0.2s;
            border-left: 4px solid #2c5282;
        }

        .journal-item[data-index="sinta-1"] {
            border-left-color: #d69e2e;
        }

        .journal-item[data-index="sinta-2"] {
            border-left-color: #c05621;
        }

        .journal-item[data-index="sinta-3"] {
            border-left-color: #38a169;
        }

        .journal-item[data-index="sinta-4"] {
            border-left-color: #3182ce;
        }

        .journal-item[data-index="sinta-5"] {
            border-left-color: #805ad5;
        }

        .journal-item[data-index="sinta-6"] {
            border-left-color: #718096;
        }

        .journal-item[data-index="scopus"] {
            border-left-color: #e53e3e;
        }

        .journal-item[data-index="non-sinta"] {
            border-left-color: #a0aec0;
        }

        .journal-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .journal-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 1rem;
        }

        .journal-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: #2c5282;
            margin-bottom: 0.25rem;
        }

        .journal-date {
            color: #718096;
            font-size: 0.875rem;
        }

        .journal-meta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }

        .meta-tag {
            background-color: #edf2f7;
            color: #4a5568;
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            font-size: 0.875rem;
        }

        .index-badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .index-badge.sinta-1 {
            background-color: #fef5e7;
            color: #d69e2e;
        }

        .index-badge.sinta-2 {
            background-color: #fff5f0;
            color: #c05621;
        }

        .index-badge.sinta-3 {
            background-color: #f0fff4;
            color: #38a169;
        }

        .index-badge.sinta-4 {
            background-color: #ebf8ff;
            color: #3182ce;
        }

        .index-badge.sinta-5 {
            background-color: #faf5ff;
            color: #805ad5;
        }

        .index-badge.sinta-6 {
            background-color: #f7fafc;
            color: #718096;
        }

        .index-badge.scopus {
            background-color: #fff5f5;
            color: #e53e3e;
        }

        .index-badge.non-sinta {
            background-color: #edf2f7;
            color: #a0aec0;
        }

        .journal-description {
            color: #4a5568;
            margin-bottom: 1rem;
        }

        .journal-footer {
            display: flex;
            gap: 1rem;
        }

        .btn {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.875rem;
            text-decoration: none;
            display: inline-block;
            transition: background-color 0.2s;
        }

        .btn-primary {
            background-color: #2c5282;
            color: white;
        }

        .btn-primary:hover {
            background-color: #2a4365;
        }

        .btn-secondary {
            background-color: #e2e8f0;
            color: #4a5568;
        }

        .btn-secondary:hover {
            background-color: #cbd5e0;
        }

        footer {
            background-color: #2d3748;
            color: white;
            padding: 2rem 0;
            margin-top: 4rem;
            text-align: center;
        }

        @media (max-width: 768px) {
            .journal-header {
                flex-direction: column;
            }
        }