:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --secondary: #059669;
            --dark: #1f2937;
            --darker: #111827;
            --light: #f9fafb;
            --lighter: #ffffff;
            --gray: #6b7280;
            --gray-light: #e5e7eb;
            --danger: #dc2626;
            --success: #10b981;
            --warning: #f59e0b;
            --border-radius: 12px;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        }

        .main-container {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            min-height: 100vh;
            padding: 0;
            margin: 0;
        }

        .container {
            width: 95%;
            margin: 0 auto;
            padding: 0 20px;
        }

        .header-title {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 40px 0;
            margin-bottom: 40px;
            box-shadow: var(--shadow);
        }

        .header-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            font-weight: 800;
        }

        .subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto 30px;
        }

        .main-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .card {
            background-color: var(--lighter);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 30px;
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .card-title {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 600;
        }

        .card-title i {
            margin-right: 12px;
            font-size: 1.8rem;
        }

        .input-group {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 12px;
            margin-bottom: 20px;
        }

        .file-input-group {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
            margin-bottom: 20px;
        }

        textarea, input, select {
            width: 100%;
            padding: 14px 16px;
            border: 1px solid var(--gray-light);
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
            background-color: var(--lighter);
            color: var(--dark);
        }

        textarea {
            min-height: 120px;
            resize: vertical;
            font-family: 'Consolas', 'Monaco', monospace;
        }

        textarea:focus, input:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
        }

        button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px 24px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            white-space: nowrap;
        }

        button:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        button:active {
            transform: translateY(0);
        }

        button i {
            margin-right: 8px;
        }

        .btn-secondary {
            background-color: var(--gray-light);
            color: var(--dark);
        }

        .btn-secondary:hover {
            background-color: #d1d5db;
        }

        .btn-success {
            background-color: var(--success);
        }

        .btn-success:hover {
            background-color: #0d9b6c;
        }

        .btn-danger {
            background-color: var(--danger);
        }

        .btn-danger:hover {
            background-color: #c82323;
        }

        .algorithm-selector {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }

        .algorithm-option {
            flex: 1 1 200px;
        }

        .algorithm-option input[type="radio"] {
            display: none;
        }

        .algorithm-option label {
            display: block;
            padding: 12px 16px;
            background-color: var(--gray-light);
            border-radius: var(--border-radius);
            cursor: pointer;
            text-align: center;
            transition: var(--transition);
            font-weight: 500;
        }

        .algorithm-option input[type="radio"]:checked + label {
            background-color: var(--primary);
            color: white;
        }

        .result-container {
            margin-top: 30px;
        }

        .hash-result {
            font-family: 'Consolas', 'Monaco', monospace;
            background-color: var(--darker);
            color: var(--lighter);
            padding: 16px;
            border-radius: var(--border-radius);
            word-break: break-all;
            margin-bottom: 20px;
            position: relative;
        }

        .hash-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .comparison-section {
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid var(--gray-light);
        }

        .comparison-result {
            margin-top: 15px;
            font-weight: 600;
            padding: 10px;
            border-radius: var(--border-radius);
            text-align: center;
        }

        .match {
            background-color: rgba(16, 185, 129, 0.1);
            color: var(--success);
        }

        .no-match {
            background-color: rgba(220, 38, 38, 0.1);
            color: var(--danger);
        }

        .file-info {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 10px;
            padding: 10px;
            background-color: var(--gray-light);
            border-radius: var(--border-radius);
        }

        .file-info i {
            font-size: 1.2rem;
        }

        .history-container {
            margin-top: 30px;
        }

        .history-item {
            padding: 12px 16px;
            background-color: var(--lighter);
            border-radius: var(--border-radius);
            margin-bottom: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-left: 4px solid var(--primary);
        }

        .history-hash {
            font-family: 'Consolas', 'Monaco', monospace;
            font-size: 0.9rem;
            color: var(--gray);
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .history-algorithm {
            background-color: var(--primary-light);
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            margin-left: 10px;
        }

        .info-section {
            margin-top: 40px;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }

        .info-card {
            background-color: var(--lighter);
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }

        .info-card h3 {
            color: var(--primary);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .info-card h3 i {
            font-size: 1.5rem;
        }

        

        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 15px 25px;
            background-color: var(--success);
            color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-lg);
            transform: translateX(150%);
            transition: transform 0.3s ease;
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .notification.show {
            transform: translateX(0);
        }

        .notification.error {
            background-color: var(--danger);
        }

        .notification.warning {
            background-color: var(--warning);
        }

        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255,255,255,.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 1s ease-in-out infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .strength-meter {
            height: 6px;
            background-color: var(--gray-light);
            border-radius: 3px;
            margin-top: 15px;
            overflow: hidden;
        }

        .strength-bar {
            height: 100%;
            width: 0;
            transition: width 0.5s ease;
        }

        .strength-weak {
            background-color: var(--danger);
        }

        .strength-medium {
            background-color: var(--warning);
        }

        .strength-strong {
            background-color: var(--success);
        }

        .strength-label {
            margin-top: 5px;
            font-size: 0.8rem;
            text-align: right;
            color: var(--gray);
        }

        .tooltip {
            position: relative;
            display: inline-block;
            cursor: pointer;
            margin-left: 5px;
        }

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

        .tooltip .tooltiptext {
            visibility: hidden;
            width: 200px;
            background-color: var(--darker);
            color: var(--light);
            text-align: center;
            border-radius: 6px;
            padding: 10px;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 0.9rem;
            font-weight: normal;
        }

        .tooltip:hover .tooltiptext {
            visibility: visible;
            opacity: 1;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            
            .input-group {
                grid-template-columns: 1fr;
            }
            
            .card {
                padding: 20px;
            }
            
            .algorithm-option {
                flex: 1 1 100%;
            }
        }


/* ===== ARTICLE SPECIFIC STYLES - NO BODY STYLES ===== */
#sha-guide-article {
      width: 95%;
      margin: 0 auto;
      padding: 2rem 1.5rem 3rem 1.5rem;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }

    /* Hero Section */
    .sha-guide-hero {
      text-align: center;
      margin-bottom: 2.5rem;
      padding: 2rem 1.5rem;
      background: linear-gradient(135deg, #2563eb 0%, #059669 100%);
      border-radius: 32px;
      box-shadow: 0 12px 30px rgba(37, 99, 235, 0.3);
    }

    .sha-guide-hero h2 {
      font-size: 2.6rem;
      font-weight: 800;
      color: white;
      margin-bottom: 1rem;
      letter-spacing: -0.02em;
      font-family: 'Montserrat', serif;
    }

    .sha-guide-hero .sha-hero-sub {
      font-size: 1.2rem;
      color: rgba(255, 255, 255, 0.9);
      max-width: 720px;
      margin: 0 auto;
      line-height: 1.5;
    }

    .sha-guide-meta {
      display: flex;
      justify-content: center;
      gap: 2rem;
      color: rgba(255, 255, 255, 0.8);
      font-weight: 500;
      margin-top: 1.2rem;
      flex-wrap: wrap;
    }

    .sha-guide-meta span i {
      margin-right: 0.5rem;
    }

    /* Main Content */
    .sha-main-content {
      background: white;
      border-radius: 28px;
      padding: 2rem 2rem 2.5rem 2rem;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
      border: 1px solid rgba(37, 99, 235, 0.15);
    }

    .sha-main-content h2 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-top: 2rem;
      margin-bottom: 1rem;
      color: #2563eb;
      border-left: 5px solid #059669;
      padding-left: 1rem;
      font-family: 'Montserrat', serif;
    }

    .sha-main-content h2:first-of-type {
      margin-top: 0;
    }

    .sha-main-content h3 {
      font-size: 1.35rem;
      font-weight: 600;
      margin: 1.5rem 0 0.75rem 0;
      color: #059669;
    }

    .sha-main-content p {
      font-size: 1.05rem;
      color: #2d3748;
      margin-bottom: 1.2rem;
      line-height: 1.6;
    }

    .sha-main-content ul, .sha-main-content ol {
      margin: 1rem 0 1.2rem 1.8rem;
      color: #2d3748;
      line-height: 1.6;
    }

    .sha-main-content li {
      margin-bottom: 0.5rem;
    }

    .sha-highlight-box {
      background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(5, 150, 105, 0.05));
      border-left: 6px solid #059669;
      padding: 1.25rem 1.5rem;
      border-radius: 20px;
      margin: 1.75rem 0;
    }

    .sha-pro-tip {
      background: rgba(5, 150, 105, 0.1);
      border-radius: 20px;
      padding: 1.2rem 1.5rem;
      margin: 1.5rem 0;
      display: flex;
      gap: 1rem;
      align-items: flex-start;
      border: 1px solid rgba(37, 99, 235, 0.3);
    }

    .sha-pro-tip i {
      font-size: 1.8rem;
      color: #059669;
    }

    .sha-stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1.2rem;
      margin: 2rem 0;
    }

    .sha-stat-card {
      background: #f8f9fa;
      border-radius: 20px;
      padding: 1.2rem;
      text-align: center;
      transition: all 0.2s;
      border: 1px solid rgba(37, 99, 235, 0.2);
    }

    .sha-stat-card .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: #2563eb;
      margin-bottom: 0.25rem;
    }

    .sha-quote-block {
      background: #f8f9fa;
      padding: 1.5rem;
      border-radius: 24px;
      text-align: center;
      font-style: italic;
      margin: 1.5rem 0;
      border: 1px solid rgba(37, 99, 235, 0.2);
    }

    .sha-quote-block i {
      font-size: 2rem;
      color: #059669;
      margin-bottom: 0.5rem;
      display: inline-block;
    }

    .sha-table-wrapper {
      overflow-x: auto;
      margin: 1.5rem 0;
    }

    .sha-algorithms-table {
      width: 100%;
      border-collapse: collapse;
      background: #f8f9fa;
      border-radius: 16px;
      overflow: hidden;
    }

    .sha-algorithms-table th, .sha-algorithms-table td {
      padding: 12px 16px;
      text-align: left;
      border-bottom: 1px solid rgba(37, 99, 235, 0.2);
    }

    .sha-algorithms-table th {
      background: rgba(37, 99, 235, 0.1);
      font-weight: 600;
      color: #2563eb;
    }

    .sha-algorithms-table tr:hover {
      background: rgba(5, 150, 105, 0.05);
    }

    .sha-applications-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.2rem;
      margin: 1.5rem 0;
    }

    .sha-app-card {
      background: #f8f9fa;
      border-radius: 16px;
      padding: 1.2rem;
      border: 1px solid rgba(37, 99, 235, 0.2);
      transition: all 0.2s;
    }

    .sha-app-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(37, 99, 235, 0.1);
    }

    .sha-app-title {
      font-weight: 700;
      color: #2563eb;
      margin-bottom: 0.5rem;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .sha-footer-note {
      margin-top: 2.5rem;
      text-align: center;
      font-size: 0.85rem;
      color: #718096;
      border-top: 1px solid #e2e8f0;
      padding-top: 2rem;
    }

    @media (max-width: 768px) {
      .sha-guide-hero h2 {
        font-size: 2rem;
      }
      .sha-main-content {
        padding: 1.5rem;
      }
      #sha-guide-article {
        padding: 1rem;
      }
    }