:root {
    --bg-gradient: radial-gradient(circle at 50% 0%, #1e1b4b 0%, #0f172a 70%, #020617 100%);
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-hover: rgba(51, 65, 85, 0.85);
    --border-color: rgba(56, 189, 248, 0.2);
    --border-hover: rgba(56, 189, 248, 0.6);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --accent-glow: 0 0 25px rgba(56, 189, 248, 0.35);
    --shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-main);
    margin: 0;
    padding: 2.5rem 1rem;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Profil Alanı */
.profile-container { text-align: center; margin-bottom: 2.5rem; position: relative; }
.profile-pic-wrapper { position: relative; width: 130px; height: 130px; margin: 0 auto 15px auto; }
.profile-pic { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 3px solid var(--accent); box-shadow: var(--accent-glow), var(--shadow); background-color: #0f172a; }
.verified-badge { position: absolute; bottom: 5px; right: 5px; background: #38bdf8; color: #0f172a; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; box-shadow: 0 4px 10px rgba(0,0,0,0.5); }
h1 { font-size: 1.8rem; font-weight: 700; margin: 0.3rem 0; letter-spacing: 0.5px; }
.subscriber-counter { display: inline-block; background: rgba(56, 189, 248, 0.1); color: var(--accent); padding: 6px 16px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; border: 1px solid rgba(56, 189, 248, 0.3); margin-bottom: 12px; }
.bio { font-size: 1.05rem; color: var(--text-muted); margin: 0 auto; max-width: 650px; line-height: 1.6; }

/* Sekme Menüsü */
.tab-menu { display: flex; background: rgba(15, 23, 42, 0.8); backdrop-filter: blur(16px); border: 1px solid var(--border-color); border-radius: 16px; padding: 6px; margin-bottom: 2.5rem; max-width: 450px; margin-left: auto; margin-right: auto; box-shadow: var(--shadow); }
.tab-btn { flex: 1; padding: 12px 0; font-size: 1rem; font-weight: 600; color: var(--text-muted); background: transparent; border: none; border-radius: 12px; cursor: pointer; transition: all 0.3s ease; font-family: 'Outfit', sans-serif; }
.tab-btn.active { color: #0f172a; background: var(--accent); box-shadow: 0 4px 20px rgba(56, 189, 248, 0.5); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Linkler */
.links-container { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 2rem; }
.link-btn { display: flex; align-items: center; background: var(--card-bg); backdrop-filter: blur(12px); color: var(--text-main); text-decoration: none; padding: 1.1rem 1.4rem; border-radius: 16px; border: 1px solid var(--border-color); font-size: 1.1rem; font-weight: 600; box-shadow: var(--shadow); transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); position: relative; overflow: hidden; }
.link-btn:hover { background: var(--card-hover); transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--accent-glow), var(--shadow); }
.icon-wrapper { width: 45px; font-size: 1.6rem; display: flex; justify-content: center; }
.text-wrapper { flex-grow: 1; text-align: left; padding-left: 14px; display: flex; flex-direction: column; }
.store-badge { font-size: 0.85rem; color: var(--text-muted); font-weight: 400; margin-top: 3px; }
.external-icon { color: var(--text-muted); font-size: 0.9rem; transition: transform 0.3s; }
.link-btn:hover .external-icon { transform: translate(3px, -3px); color: var(--accent); }

.section-title { font-size: 1.1rem; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 2px; margin: 3rem 0 1.5rem; text-align: center; display: flex; align-items: center; justify-content: center; gap: 10px; }
.section-title::before, .section-title::after { content: ""; height: 1px; background: rgba(56, 189, 248, 0.3); flex: 1; max-width: 60px; }

/* Oynatma Listeleri */
.playlists-grid { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 2.5rem; }
.playlist-card { background: var(--card-bg); backdrop-filter: blur(12px); border-radius: 16px; overflow: hidden; text-decoration: none; color: var(--text-main); box-shadow: var(--shadow); border: 1px solid var(--border-color); transition: all 0.3s ease; display: flex; flex-direction: column; }
.playlist-card:hover { transform: translateY(-6px); background: var(--card-hover); border-color: var(--border-hover); box-shadow: var(--accent-glow), var(--shadow); }
.playlist-cover-wrapper { width: 100%; background-color: #000; aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.playlist-cover { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.playlist-card:hover .playlist-cover { transform: scale(1.04); }
.playlist-overlay-icon { position: absolute; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(5px); color: #fff; width: 45px; height: 45px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; opacity: 0.8; transition: opacity 0.3s, transform 0.3s; }
.playlist-card:hover .playlist-overlay-icon { opacity: 1; transform: scale(1.1); color: var(--accent); }
.playlist-title-text { padding: 16px; font-size: 1rem; font-weight: 600; text-align: left; flex-grow: 1; display: flex; align-items: center; justify-content: space-between; line-height: 1.4; }
.playlist-title-text i { font-size: 0.9rem; color: var(--text-muted); }

@media (min-width: 768px) { .playlists-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .links-container { grid-template-columns: repeat(2, 1fr); } .playlists-grid { grid-template-columns: repeat(3, 1fr); } }

/* Video ve İş Birliği */
.video-responsive { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: 20px; box-shadow: var(--shadow); margin-bottom: 2.5rem; background: #000; border: 1px solid var(--border-color); }
.video-responsive iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

.collab-box { background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9)); backdrop-filter: blur(16px); border: 1px solid var(--border-color); border-radius: 20px; padding: 2.5rem 2rem; text-align: center; box-shadow: var(--shadow); margin-top: 3.5rem; position: relative; overflow: hidden; }
.collab-box::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, #E1306C, #38bdf8, #F27A1A); }
.collab-box h3 { margin-top: 0; font-size: 1.4rem; color: #fff; font-weight: 700; }
.collab-box p { font-size: 1rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1.5rem; max-width: 600px; margin-left: auto; margin-right: auto; }
.collab-btn { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045); color: #fff; padding: 14px 28px; border-radius: 14px; text-decoration: none; font-weight: 700; font-size: 1.05rem; box-shadow: 0 8px 25px rgba(225, 48, 108, 0.4); transition: all 0.3s ease; }
.collab-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(225, 48, 108, 0.6); }

/* Yukarı Kaydır (Back to Top) Butonu */
#backToTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99;
    background: var(--accent);
    color: #0f172a;
    border: none;
    outline: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
#backToTopBtn.show {
    opacity: 1;
    visibility: visible;
}
#backToTopBtn:hover {
    transform: translateY(-4px);
    background: #fff;
}

/* 📱 MOBİL İÇİN YUKARI TAŞIMA AYARI */
@media (max-width: 480px) {
    #backToTestBtn, #backToTopBtn {
        bottom: 95px; /* Mobilde konum kartının üstünde kalması için yukarı kaydırıldı */
        right: 20px;  /* Mobilde sağ kenardan biraz içeri alındı */
    }
}
/* Webkit tabanlı tarayıcılar (Chrome, Edge, Safari, Opera) için */
::-webkit-scrollbar {
    width: 10px; /* Çubuğun kalınlığı */
}

::-webkit-scrollbar-track {
    background: #0f172a; /* Arkadaki rayın rengi (Koyu tema rengin) */
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #38bdf8; /* Tıpkı logon gibi canlı mavi (tutamaç rengi) */
    border-radius: 10px;
    border: 2px solid #0f172a; /* Kenar boşluğu efekti için */
}

::-webkit-scrollbar-thumb:hover {
    background: #0284c7; /* Üzerine gelince rengin koyulaşması */
}

/* Firefox için modern kaydırma çubuğu desteği */
* {
    scrollbar-width: thin;
    scrollbar-color: #38bdf8 #0f172a; /* Tutamaç rengi ve ray rengi */
}