*, *::before, *::after {
    box-sizing: border-box;
}
::-webkit-scrollbar {
    display: none;
    width: 0;
    background: transparent;
}
::-webkit-scrollbar-corner {
    display: none;
    background: transparent;
}
:root {
    --bg-color: #d5dbe6; 
    --text-color: #4a4a4a;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --accent-color: #2bbfff;
    --hover-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}
:root.dark {
    --bg-color: #121212; 
    --text-color: #e0e0e0;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --hover-shadow: 0 12px 30px rgba(0, 0, 0, 0.8);
}
html {
    overflow-y: auto; 
    overflow-x: hidden;
    overscroll-behavior: none; 
    background-color: var(--bg-color);
    transition: background-color 0.5s ease;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600; 
    margin: 0; 
    padding: 0 0 env(safe-area-inset-bottom) 0; 
    min-height: 100dvh; 
    display: flex; 
    flex-direction: column; 
    align-items: center;
    background-color: var(--bg-color); 
    color: var(--text-color);
    transition: background-color 0.5s ease, color 0.5s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overscroll-behavior: none; 
}
button, a {
    -webkit-tap-highlight-color: transparent; 
}
@keyframes pop-icon {
    0% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.3) rotate(180deg) translateZ(0); }
    100% { transform: scale(1) rotate(360deg) translateZ(0); }
}
.animate-icon { animation: pop-icon 0.5s cubic-bezier(0.34, 1.56, 0.64, 1); }
.theme-toggle {
    position: fixed; 
    bottom: max(30px, env(safe-area-inset-bottom)); 
    right: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: none;
    color: var(--text-color);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1000;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backface-visibility: hidden;
    transform: translateZ(0);
}
.theme-toggle:hover { background: rgba(150, 150, 150, 0.2); transform: scale(1.05) translateZ(0); }
.theme-toggle:active { transform: scale(0.92) translateZ(0); }
.burger-toggle {
    position: fixed;
    top: 20px; 
    right: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: none;
    color: var(--text-color);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 900;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backface-visibility: hidden;
    transform: translateZ(0);
}
.burger-toggle:hover { background: rgba(150, 150, 150, 0.2); transform: scale(1.05) translateZ(0); }
.burger-toggle:active { transform: scale(0.92) translateZ(0); }
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100dvh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    z-index: 1001; 
}
.menu-overlay.active {
    opacity: 1;
    pointer-events: auto;
}
.side-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px; 
    max-width: 80vw;
    height: 100dvh;
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-radius: 30px 0 0 30px; 
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1002; 
    display: flex;
    flex-direction: column;
    padding: 80px 30px 30px;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
}
.side-menu.active {
    transform: translateX(0);
}
.close-menu {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: var(--text-color);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.close-menu:hover {
    background: rgba(150, 150, 150, 0.2);
    transform: scale(1.05);
}
.close-menu:active {
    transform: scale(0.92);
}
.menu-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}
.menu-link {
    display: block;
    width: 100%;
    text-align: center;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600; 
    padding: 15px 20px;
    border-radius: 980px; 
    background: transparent;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    backface-visibility: hidden;
    transform: translateZ(0);
}
.menu-link:hover {
    background: rgba(150, 150, 150, 0.15); 
    color: var(--text-color); 
    transform: scale(1.05) translateZ(0); 
}
.menu-link:active {
    transform: scale(0.92) translateZ(0); 
}
.container { 
    width: 100%; 
    max-width: 800px; 
    padding: 60px 20px 30px; 
    text-align: center; 
    flex: 1; 
}
.profile-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 40px; }
.sticky-nav {
    position: sticky;
    top: max(15px, env(safe-area-inset-top));
    z-index: 900;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-bottom: 40px;
}
.filter-menu { 
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-radius: 980px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    display: flex; 
    align-items: center;
    gap: 5px; 
    padding: 0 16px; 
    width: fit-content;
    max-width: 100%;
    height: 54px; 
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; 
}
.filter-menu::-webkit-scrollbar { display: none; }
.filter-menu button {
    background: transparent;
    border: none;
    color: var(--text-color);
    padding: 10px 20px; 
    border-radius: 980px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    font-weight: 600;
    white-space: nowrap; 
    backface-visibility: hidden;
    transform: translateZ(0);
}
.filter-menu button:hover { 
    background: rgba(150, 150, 150, 0.15); 
    transform: scale(1.05) translateZ(0); 
}
.filter-menu button:active { 
    transform: scale(0.92) translateZ(0); 
}
.filter-menu button.active {
    background: rgba(120, 120, 120, 0.2);
    color: var(--text-color);
}
.spotify-wrapper { 
    margin-top: 20px; 
    height: 352px; 
    border-radius: 24px; 
    background: var(--glass-bg); 
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: none;
    transition: box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}
.spotify-wrapper:hover { box-shadow: var(--hover-shadow); }
.spotify-wrapper iframe { 
    display: block; width: 100%; height: 100%; border: none; border-radius: 24px;
}
.playlist-card { opacity: 1; transition: all 0.5s ease; max-height: 400px; }
.playlist-card.hidden { opacity: 0; max-height: 0; pointer-events: none; margin: 0; }
.text-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    border-radius: 24px;
    padding: 40px;
    text-align: left;
    line-height: 1.6;
    margin-bottom: 20px;
}
.text-panel h1 { color: var(--text-color); margin-top: 0; }
.text-panel h2, .text-panel h3 { color: var(--text-color); }
.text-panel a.text-link { color: var(--accent-color); text-decoration: none; font-weight: bold; }
.text-panel a.text-link:hover { text-decoration: underline; }
.btn-back {
    display: inline-block;
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    border: none;
    color: var(--text-color);
    padding: 10px 20px;
    border-radius: 980px;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    font-weight: 600;
    margin-top: 20px;
}
.btn-back:hover { 
    background: rgba(255, 255, 255, 0.1); 
    transform: scale(1.05); 
    color: var(--text-color);
}
.btn-back:active { 
    transform: scale(0.92); 
}
footer { 
    margin-top: 40px; 
    padding: 40px; 
    color: var(--text-color); 
    opacity: 0.6; 
    font-size: 0.8rem; 
    text-align: center; 
    font-weight: 600; 
}
footer a { color: var(--text-color); text-decoration: none; margin: 0 10px; transition: color 0.3s ease; }
footer a:hover { color: var(--accent-color); }
@media (max-width: 600px) {
    .container { 
        padding: 30px 15px 15px; 
    }
    .profile-title { font-size: 1.8rem; margin-bottom: 20px; }
    .sticky-nav {
        justify-content: flex-start;
        align-items: center; 
        gap: 12px; 
        width: 100%;
    }
    .filter-menu { 
        margin: 0; 
        padding: 0 16px; 
        flex: 1 1 auto; 
        min-width: 0; 
        height: 54px; 
    }
    .filter-menu button { 
        padding: 8px 14px; 
        font-size: 0.85rem; 
    }
    .burger-toggle {
        position: relative; 
        top: auto;
        right: auto;
        width: 54px; 
        height: 54px; 
        flex: 0 0 54px; 
    }
    .side-menu {
        width: 220px; 
    }
}