:root {
            --bg: #09120e;
            --surface: rgba(20, 36, 26, 0.6);
            --surface-hover: rgba(30, 50, 36, 0.8);
            --text-primary: #f0f7f3;
            --text-secondary: #9db8a6;
            --accent: #6dbf83;
        }

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

        body {
            font-family: 'Outfit', sans-serif;
            background-color: var(--bg);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Hero Section */
        header {
            position: relative;
            height: 45vh;
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }

        header img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.6;
            transform: scale(1.05);
            animation: zoomOut 15s infinite alternate ease-in-out;
            z-index: 1;
        }

        .header-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to bottom, rgba(9, 18, 14, 0.2) 0%, rgba(9, 18, 14, 1) 100%);
            z-index: 2;
        }

        header h1 {
            position: relative;
            z-index: 3;
            font-family: 'Outfit', sans-serif;
            color: rgb(255, 192, 32) !important;
            /*font-family: 'Playfair Display', serif;*/
            font-size: clamp(3.5rem, 6vw, 6rem);
            font-weight: 600;
            color: #fff;
            text-align: center;
            text-shadow: 2px 4px 10px rgba(0, 0, 0, 0.8);
            animation: fadeInDown 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
            letter-spacing: 1px;
        }

        /* TOC Container */
        main {
            flex: 1;
            max-width: 800px;
            width: 100%;
            margin: -40px auto 60px;
            padding: 0 20px;
            position: relative;
            z-index: 10;
        }

        .toc-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .toc-item {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.8s forwards;
        }

        .toc-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--surface);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 24px 32px;
            border-radius: 16px;
            text-decoration: none;
            color: var(--text-primary);
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }

        .toc-link:hover {
            transform: translateY(-4px) scale(1.02);
            background: var(--surface-hover);
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
        }

        .toc-link:active {
            transform: translateY(0) scale(0.98);
        }

        .toc-name {
            font-size: 1.5rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .icon-container {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(109, 191, 131, 0.15);
            color: var(--accent);
            transition: transform 0.3s ease;
        }

        .toc-link:hover .icon-container {
            transform: rotate(5deg) scale(1.1);
            background: rgba(109, 191, 131, 0.25);
            box-shadow: 0 0 15px rgba(109, 191, 131, 0.3);
        }

        .icon-container svg {
            width: 24px;
            height: 24px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .error-msg {
            text-align: center;
            padding: 40px;
            color: #ff6b6b;
            background: rgba(255, 107, 107, 0.1);
            border-radius: 12px;
            border: 1px solid rgba(255, 107, 107, 0.2);
        }

        .spinner {
            width: 50px;
            height: 50px;
            border: 4px solid rgba(255,255,255,0.1);
            border-left-color: var(--accent);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 40px auto;
        }

        /* Essential Animations */
        @keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes zoomOut {
            from { transform: scale(1.05); }
            to { transform: scale(1); }
        }

        @keyframes spin {
            100% { transform: rotate(360deg); }
        }