:root {
            --bg-color: #f8fafc;
            --text-color: #0f172a;
            --toggle-bg: #e2e8f0;
            --toggle-text: #1e293b;
            --img-border: #f1f5f9;
            --btn-twitter-bg: #000000;
            --btn-twitter-border: #334155;
            --btn-github-bg: #1e293b;
            --btn-github-text: #ffffff;
        }

        .dark {
            --bg-color: #0f172a;
            --text-color: #ffffff;
            --toggle-bg: #1e293b;
            --toggle-text: #e2e8f0;
            --img-border: #1e293b;
            --btn-twitter-bg: #1e293b;
            --btn-twitter-border: transparent;
            --btn-github-bg: #ffffff;
            --btn-github-text: #0f172a;
        }

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

        html {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            transition: background-color 0.4s ease, color 0.4s ease;
        }

        @media (min-width: 640px) {
            body { padding: 3rem; }
        }

        a { text-decoration: none; color: inherit; }
        button { border: none; background: none; cursor: pointer; }

        .theme-toggle {
            position: absolute;
            bottom: 0.5rem;
            right: 0.5rem;
            width: 3rem;
            height: 3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--toggle-bg);
            color: var(--toggle-text);
            transition: transform 0.2s, background-color 0.4s, color 0.4s;
            outline: none;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
            z-index: 10;
        }

        .theme-toggle:hover { transform: scale(1.1); }
        .hidden { display: none !important; }
        .text-xl { font-size: 1.25rem; line-height: 1.75rem; }

        .main-container {
            width: 100%;
            max-width: 64rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2.5rem;
        }

        @media (min-width: 768px) {
            .main-container {
                flex-direction: row;
                gap: 4rem;
            }
        }

        .img-wrapper {
            flex-shrink: 0;
            position: relative;
        }

        .img-backdrop {
            position: absolute;
            inset: -0.25rem;
            background: linear-gradient(to right, #3b82f6, #a855f7);
            border-radius: 9999px;
            filter: blur(16px);
            opacity: 0.2;
            transition: opacity 0.5s;
        }

        .img-wrapper:hover .img-backdrop { opacity: 0.4; }

        .profile-img {
            position: relative;
            width: 12rem;
            height: 12rem;
            object-fit: cover;
            border-radius: 9999px;
            border: 4px solid var(--img-border);
            box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
        }

        @media (min-width: 640px) {
            .profile-img { width: 14rem; height: 14rem; }
        }

        @media (min-width: 768px) {
            .profile-img { width: 16rem; height: 16rem; }
        }

        .content-wrapper {
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 100%;
        }

        .title {
            font-size: 2.25rem;
            line-height: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.025em;
            margin-bottom: 2.5rem;
            text-align: center;
        }

        @media (min-width: 640px) {
            .title { font-size: 3rem; line-height: 1; }
        }

        @media (min-width: 768px) {
            .content-wrapper { align-items: flex-start; }
            .title { font-size: 3.75rem; text-align: left; }
        }

        .btn-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }

        @media (min-width: 768px) {
            .btn-container { justify-content: flex-start; }
        }

        .pill-btn {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            border-radius: 9999px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        }

        .pill-btn::after {
            content: '';
            position: absolute;
            top: 0; 
            left: 0; 
            width: 100%; 
            height: 100%;
            background-color: currentColor;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }

        .pill-btn:hover::after { opacity: 0.1; }
        .pill-btn:active { transform: scale(0.97); }

        .btn-instagram { background: linear-gradient(to right, #a855f7, #ec4899, #f97316); color: #fff; box-shadow: 0 10px 15px -3px rgba(236, 72, 153, 0.2); }
        .btn-twitter { background-color: var(--btn-twitter-bg); color: #fff; border: 1px solid var(--btn-twitter-border); box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2); }
        .btn-github { background-color: var(--btn-github-bg); color: var(--btn-github-text); box-shadow: 0 10px 15px -3px rgba(100, 116, 139, 0.2); }
        .btn-spotify { background-color: #1DB954; color: #fff; box-shadow: 0 10px 15px -3px rgba(34, 197, 94, 0.2); }
        .btn-email { background-color: #e11d48; color: #fff; box-shadow: 0 10px 15px -3px rgba(244, 63, 94, 0.2); }
        .btn-bionluk { background-color: #fd4056; color: #fff; box-shadow: 0 10px 15px -3px rgba(239, 68, 68, 0.2); }
        .btn-linkedin { background-color: #0077b5; color: #fff; box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2); }
        .btn-patreon { background-color: #FF424D; color: #fff; box-shadow: 0 10px 15px -3px rgba(255, 66, 77, 0.2); }