:root[data-theme="dark"] {
    --bg-color: #0b0712;
    --card-bg: #161024;
    --text-color: #e2d9f3;
    --accent-color: #9d4edd;
    --border-color: #2a1b4e;
}

:root[data-theme="light"] {
    --bg-color: #f7f5fb;
    --card-bg: #ffffff;
    --text-color: #2b1810;
    --accent-color: #7b2cbf;
    --border-color: #e0d6f0;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
}

.container { padding: 2rem; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.2rem;
    border-radius: 12px;
}

/* Floating Persistent Mini-Player */
.mini-player {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 340px;
    background: var(--card-bg);
    border: 2px solid var(--accent-color);
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    z-index: 9999;
    padding: 1rem;
}

button {
    background: var(--accent-color);
    color: #fff;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    cursor: pointer;
}

/* Modal & Auth Tabs Overlay Styles */
.modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.7); z-index: 100000; display: flex;
    align-items: center; justify-content: center;
}
.modal-content {
    background: var(--card-bg); border: 2px solid var(--accent-color);
    padding: 2rem; border-radius: 14px; width: 320px; position: relative;
}
.close-btn {
    position: absolute; top: 10px; right: 15px; font-size: 1.5rem; cursor: pointer;
}
.tab-buttons { display: flex; gap: 10px; margin-bottom: 15px; }
.tab-buttons button { flex: 1; background: #2a1b4e; }
.tab-buttons button.active-tab { background: var(--accent-color); }
.modal input {
    width: 100%; padding: 0.6rem; margin: 5px 0 15px 0; border-radius: 6px;
    border: 1px solid var(--border-color); background: var(--bg-color); color: var(--text-color);
    box-sizing: border-box;
}