/* ==========================================================================
   CSS VARIABLE-ÖK (VILÁGOSKÉK / CYAN NEON PALETTA)
   ========================================================================== */
:root {
    /* Background Colors */
    --bg-main: #060913;
    --bg-header: #0d1322;
    --bg-card: #151d30;
    --bg-card-hover: #1e2942;
    --bg-element: #111827;
    --bg-element-hover: #1b2438;

    /* Accent / Highlight Colors (Sky Blue & Neon Cyan) */
    --accent-primary: #38bdf8;       /* Bright Sky Blue */
    --accent-primary-hover: #0284c7;
    --accent-secondary: #06b6d4;     /* Electric Cyan */
    --accent-glow: rgba(56, 189, 248, 0.35);

    /* Text Colors */
    --text-primary: #f0f9ff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Slider Track Colors */
    --slider-track-bg: #1e293b;

    /* Borders & Dividers */
    --border-color: rgba(56, 189, 248, 0.12);
    --border-color-hover: rgba(56, 189, 248, 0.3);
    --border-focus: rgba(56, 189, 248, 0.6);

    /* Shadows & Glows */
    --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.6);
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px var(--accent-glow);

    /* Status Colors */
    --danger: #f43f5e;
    --danger-hover: #e11d48;

    /* Transitions */
    --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.25);
}

/* ==========================================================================
   BASE STYLES & BACKGROUND ANIMATION CONTAINER
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html, body {
    min-height: 100vh;
    overflow-y: auto; 
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

#btn-notifications {
    display: none !important;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(56, 189, 248, 0.2);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(56, 189, 248, 0.4);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
#header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 30px;
    background-color: rgba(13, 19, 34, 0.85);
    backdrop-filter: blur(12px);
    min-height: 75px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    position: relative;
    z-index: 1001;
}

.header-left, .header-right {
    position: relative; /* Ez kell ide! */
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Navigációs indikátor csík */
.header-left {
    position: relative; /* Biztosítja, hogy az indikátor ehhez a konténerhez képest pozicionáljon */
}

.nav-indicator {
    position: absolute;
    bottom: -4px; /* A gombok alja alatt helyezkedik el */
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 3px;
    box-shadow: 0 0 10px var(--accent-glow);
    transition: left var(--transition-normal), width var(--transition-normal);
    pointer-events: none; /* Ne zavarja a kattintásokat */
}

.nav-item {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    position: relative;
    padding: 8px 10px;
    border-radius: 10px;
    transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: rgba(56, 189, 248, 0.08);
}

.nav-item:active {
    transform: scale(0.95);
}

.nav-item.active {
    color: var(--accent-primary);
}



.now-playing-btn {
    padding: 6px 12px;
    border-radius: 12px;
    text-align: left;
    background-color: var(--bg-element);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.now-playing-btn:hover {
    background-color: var(--bg-element-hover);
    border-color: var(--border-color-hover);
}

.now-playing {
    display: flex;
    align-items: center;
    gap: 12px;
}

.now-playing-cover {
    width: 42px;
    height: 42px;
    background-color: var(--bg-card);
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.now-playing-info {
    display: flex;
    flex-direction: column;
    max-width: 150px;
}

.now-playing-title {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.now-playing-artist {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Account Dropdown */
.account-dropdown-container {
    position: relative;
    display: flex;
    align-items: center;
}

.account-menu {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-hover);
    border-radius: 16px;
    padding: 10px;
    width: 210px;
    box-shadow: var(--shadow-soft);
    z-index: 1000;
    transform-origin: top right;
}

@keyframes dropdownSlide {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.account-menu.show {
    display: flex;
    flex-direction: column;
    gap: 4px;
    animation: dropdownSlide var(--transition-fast) forwards;
}

.account-menu-header {
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-primary);
}

.menu-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 4px 0;
}

.account-menu-item {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 10px 12px;
    text-align: left;
    border-radius: 10px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.account-menu-item:hover {
    background-color: var(--bg-element-hover);
}

.account-menu-item.logout-btn {
    color: var(--danger);
}

.account-menu-item.logout-btn:hover {
    background-color: rgba(244, 63, 94, 0.12);
}

/* ==========================================================================
   MAIN & PAGES
   ========================================================================== */
#main {
    padding: 25px 40px;
    position: relative;
    z-index: 2;
}

.side-indicator {
    position: absolute;
    right: 15px;
    top: 25px;
    width: 22px;
    height: 45px;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.side-indicator-inner {
    width: 3px;
    height: 20px;
    background-color: #ffffff;
    border-radius: 2px;
    box-shadow: -5px 0 0 #ffffff, 5px 0 0 #ffffff;
}

.page {
    display: none;
}

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

.page.active {
    display: block;
    animation: pageFadeIn var(--transition-normal) forwards;
}

.section {
    margin-bottom: 35px;
}

.section-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

/* ==========================================================================
   CARDS & GRIDS
   ========================================================================== */
.grid-container {
    display: flex;
    gap: 16px;
    overflow-x: auto; 
    overflow-y: hidden; 
    padding-bottom: 12px; 
    scroll-behavior: smooth; 
    -webkit-overflow-scrolling: touch;
}

.grid-container .card {
    flex: 0 0 150px; 
    min-width: 150px;
}

.card {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    background-color: rgba(21, 29, 48, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 20px;
    transition: transform var(--transition-bounce), box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card), 0 0 15px var(--accent-glow);
    border-color: var(--border-color-hover);
}

.card:active {
    transform: translateY(-2px) scale(0.98);
}

.card-cover {
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: var(--bg-element);
    border-radius: 14px;
    margin-bottom: 12px;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.card:hover .card-cover {
    transform: scale(1.03);
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ==========================================================================
   SEARCH PAGE
   ========================================================================== */
.search-bar {
    width: 100%;
    position: relative;
    margin-bottom: 30px;
}

.search-input {
    width: 100%;
    height: 52px;
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 26px;
    padding: 0 55px 0 24px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: all var(--transition-fast);
}

.search-input:focus {
    background-color: var(--bg-element-hover);
    border-color: var(--border-focus);
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.15);
}

.search-bar-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
    transition: color var(--transition-fast);
}

.search-input:focus + .search-bar-icon {
    color: var(--accent-primary);
}

.tag-container {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tag {
    background-color: var(--bg-element);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 22px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #000000;
    box-shadow: 0 4px 12px var(--accent-glow);
    transform: translateY(-2px);
}

/* ==========================================================================
   LISTS (SONGS & QUEUE)
   ========================================================================== */
.song-list, .queue-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.queue-list {
    flex: 1;
    overflow-y: auto;
    padding-right: 6px;
}

.song-item, .queue-item {
    background-color: rgba(17, 24, 39, 0.75);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.song-item:hover, .queue-item:hover {
    background-color: var(--bg-element-hover);
    border-color: var(--border-color-hover);
    transform: translateX(4px);
}

.queue-item.active {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #000000;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.queue-item.active .song-name,
.queue-item.active .song-artist {
    color: #0b0f17;
}

.song-item-left, .queue-item-left {
    display: flex;
    align-items: center;
    gap: 15px;
    min-width: 0;
}

.song-cover, .queue-cover {
    width: 48px;
    height: 48px;
    background-color: var(--bg-card);
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
}

.song-details {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.song-name {
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.song-artist {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.song-item-right {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 13px;
}

/* ==========================================================================
   PLAYLISTS PAGE
   ========================================================================== */
.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.add-playlist-btn {
    background-color: var(--accent-primary);
    border: none;
    color: #0b0f17;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--accent-glow);
    transition: all var(--transition-fast);
}

.add-playlist-btn:hover {
    background-color: var(--accent-primary-hover);
    color: #ffffff;
    transform: scale(1.05);
}

.playlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 22px;
}

.playlist-card {
    position: relative;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    background-color: rgba(21, 29, 48, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 12px;
    transition: transform var(--transition-bounce), box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.playlist-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
}

.playlist-delete-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--danger);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 5;
}

.playlist-delete-btn:hover {
    background-color: var(--danger);
    color: #ffffff;
    transform: scale(1.15);
}

.playlist-cover-box {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: var(--bg-element);
    border-radius: 14px;
    margin-bottom: 10px;
    overflow: hidden;
}

.playlist-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.playlist-title {
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    color: var(--text-primary);
}

.playlist-count {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 2px;
}

/* ==========================================================================
   PLAYER PAGE & SLIDERS (EGYÉRTELMŰ VILÁGOSKÉK SZÍNEZÉSSEL)
   ========================================================================== */
.player-container {
    display: flex;
    gap: 25px;
    height: calc(100vh - 125px);
    box-sizing: border-box;
}

.player-left, .player-right {
    flex: 1;
    background-color: rgba(21, 29, 48, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-soft);
}

.player-right {
    height: 100%;
    min-height: 0;
}

.player-left {
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.player-main-cover {
    width: 240px;
    height: 240px;
    max-width: 100%;
    background-color: var(--bg-element);
    border-radius: 20px;
    object-fit: cover;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6), 0 0 20px var(--accent-glow);
    transition: transform var(--transition-normal);
}

.player-main-cover:hover {
    transform: scale(1.02);
}

.player-meta {
    text-align: center;
}

.player-meta .title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.player-meta .artist {
    font-size: 15px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.player-meta .album {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* --- SLIDER STYLES --- */
.player-progress-container {
    width: 100%;
}

input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: var(--slider-track-bg);
    border-radius: 8px;
    outline: none;
    cursor: pointer;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

input[type=range]::-webkit-slider-runnable-track {
    height: 8px;
    border-radius: 8px;
    background: var(--slider-track-bg);
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ffffff;
    box-shadow: -400px 0 0 393px var(--accent-primary), 0 0 12px var(--accent-glow);
    border: 2px solid var(--accent-primary);
    margin-top: -3px;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

input[type=range]:hover::-webkit-slider-thumb {
    background: #ffffff;
    border-color: var(--accent-secondary);
}

input[type=range]::-moz-range-track {
    height: 8px;
    border-radius: 8px;
    background: var(--slider-track-bg);
}

input[type=range]::-moz-range-progress {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    height: 8px;
    border-radius: 8px;
}

input[type=range]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-glow);
}

.progress-slider {
    height: 8px;
}

.progress-times {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
    font-variant-numeric: tabular-nums;
    font-weight: 500;
}

/* Player Controls */
.player-controls {
    display: flex;
    align-items: center;
    gap: 25px;
}

.control-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.control-btn:hover {
    color: var(--text-primary);
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.92);
}

.control-btn.active {
    color: var(--accent-primary);
}

.play-main-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #0b0f17;
    box-shadow: 0 6px 20px var(--accent-glow);
}

.play-main-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.6);
    color: #000000;
}

.player-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

#btn-like.liked svg {
    fill: var(--danger);
    stroke: var(--danger);
    filter: drop-shadow(0 0 8px rgba(244, 63, 94, 0.4));
}

.volume-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-slider {
    width: 90px;
    height: 8px;
}

.queue-header {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* ==========================================================================
   TOAST & MODALS
   ========================================================================== */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--accent-primary);
    color: #0b0f17;
    padding: 12px 28px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(0,0,0,0.5), 0 0 15px var(--accent-glow);
    transition: transform var(--transition-bounce);
    z-index: 2000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content .input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.modal-content .input-group label {
    font-size: 12px;
    color: var(--text-secondary);
}

.modal-content input[type="file"] {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
}

.modal-content input[type="file"]::file-selector-button {
    background: var(--bg-element-hover);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    margin-right: 10px;
    transition: background-color var(--transition-fast);
}

.modal-content input[type="file"]::file-selector-button:hover {
    background: var(--accent-primary);
    color: #0b0f17;
}

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.92) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-hover);
    border-radius: 24px;
    padding: 28px;
    width: 90%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: relative;
    box-shadow: var(--shadow-soft);
}

.modal.active .modal-content {
    animation: modalPop var(--transition-bounce) forwards;
}

.close-modal-btn {
    position: absolute;
    top: 18px;
    right: 22px;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.close-modal-btn:hover {
    color: var(--text-primary);
}

.playlist-select-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 250px;
    overflow-y: auto;
}

.playlist-select-item {
    background: var(--bg-element);
    border: 1px solid var(--border-color);
    padding: 14px;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.playlist-select-item:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #0b0f17;
    transform: translateX(4px);
}

.modal-content input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-element);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all var(--transition-fast);
}

.modal-content input:focus {
    border-color: var(--border-focus);
    background-color: var(--bg-element-hover);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 5px;
}

.modal-btn {
    padding: 10px 20px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.modal-btn:active {
    transform: scale(0.95);
}

.modal-btn.cancel {
    background: var(--bg-element);
    color: var(--text-secondary);
}

.modal-btn.cancel:hover {
    background: var(--bg-element-hover);
    color: var(--text-primary);
}

.modal-btn.confirm {
    background: var(--accent-primary);
    color: #0b0f17;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.modal-btn.confirm:hover {
    background: var(--accent-primary-hover);
    color: #ffffff;
}

/* ==========================================================================
   FUTURISZTIKUS ELMOSÓDOTT SZIMBÓLUM HÁTTÉR ANIMÁCIÓ
   ========================================================================== */
.bg-symbol-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.bg-symbol {
    position: absolute;
    color: var(--accent-primary);
    opacity: 0.08;
    filter: blur(8px);
    user-select: none;
    animation: floatSymbol 25s infinite ease-in-out;
}

.bg-symbol:nth-child(1) { top: 10%; left: 15%; font-size: 120px; animation-duration: 22s; }
.bg-symbol:nth-child(2) { top: 60%; left: 80%; font-size: 180px; animation-duration: 28s; animation-delay: -5s; }
.bg-symbol:nth-child(3) { top: 75%; left: 20%; font-size: 140px; animation-duration: 20s; animation-delay: -10s; }
.bg-symbol:nth-child(4) { top: 20%; left: 70%; font-size: 160px; animation-duration: 26s; animation-delay: -15s; }

@keyframes floatSymbol {
    0% {
        transform: translateY(0) rotate(0deg) scale(1);
    }
    50% {
        transform: translateY(-40px) rotate(180deg) scale(1.15);
        opacity: 0.15;
        filter: blur(12px);
    }
    100% {
        transform: translateY(0) rotate(360deg) scale(1);
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN (FRISSÍTVE)
   ========================================================================== */

@media (max-width: 900px) {
    html, body {
        min-height: 100vh;
        overflow-y: auto; /* Engedélyezi a görgetést, ha a tartalom túlnő az oldalon */
    }

    body {
        display: flex;
        flex-direction: column;
    }

    #main {
        flex: 1;
        padding: 15px;
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    .page.active {
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    #header {
        padding: 8px 12px !important;
        min-height: 60px !important;
        position: relative;
        z-index: 1000;
        overflow: visible !important; /* Nem takarja el a lenyíló fiók menüt */
    }

    .header-left, .header-right {
        gap: 10px !important;
        position: relative;
        overflow: visible;
    }

    .nav-item {
        padding: 6px 8px !important;
        font-size: 13px;
    }

    .now-playing-info {
        max-width: 80px;
    }

    .now-playing-cover {
        width: 34px;
        height: 34px;
    }

    .player-container {
        flex-direction: column;
        height: auto;
        gap: 12px;
    }

    .player-left {
        flex: 0 0 auto;
        padding: 16px;
        gap: 12px;
        width: 100%;
    }

    .player-main-cover {
        width: 110px;
        height: 110px;
    }

    .player-meta .title {
        font-size: 16px;
    }

    .player-meta .artist, .player-meta .album {
        font-size: 12px;
    }

    .player-right {
        flex: 1;
        padding: 15px;
        min-height: 0;
        width: 100%;
    }

    .queue-header {
        font-size: 16px;
        margin-bottom: 12px;
    }

    .queue-list {
        flex: 1;
        max-height: none;
        overflow-y: auto;
    }

    .side-indicator {
        display: none;
    }
}

@media (max-width: 650px) {
    .volume-container {
        display: none !important;
    }

    .player-actions {
        justify-content: center;
        width: auto;
    }

    .nav-item span:not(.now-playing-title):not(.now-playing-artist) {
        display: none;
    }

    /* Kártyák kisebbre vétele: 130px helyett 100px, így több fér el egy sorban */
    .grid-container, .playlist-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 10px;
    }
}

@media (max-width: 420px) {
    #main {
        padding: 10px;
    }

    .now-playing-info {
        display: none !important;
    }

    /* Kisméretű mobilon 3 oszlopos rács és kompaktabb kártyák */
    .grid-container, .playlist-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .card, .playlist-card {
        padding: 8px;
        border-radius: 14px;
    }

    .card-title, .playlist-title {
        font-size: 12px;
    }

    .card-subtitle, .playlist-count {
        font-size: 10px;
    }

    .song-item, .queue-item {
        padding: 10px 12px;
    }

    .song-cover, .queue-cover {
        width: 40px;
        height: 40px;
    }

    .song-name {
        font-size: 13px;
    }

    .song-artist {
        font-size: 11px;
    }
}