@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-main: #07080c;
    --bg-card: rgba(15, 18, 36, 0.35);
    --bg-card-hover: rgba(25, 30, 58, 0.5);
    --bg-input: rgba(10, 11, 22, 0.5);
    
    --accent-purple: #8e2de2;
    --accent-purple-glow: rgba(142, 45, 226, 0.3);
    --accent-pink: #ff007f;
    --accent-pink-glow: rgba(255, 0, 127, 0.3);
    --accent-blue: #00f2fe;
    --accent-blue-glow: rgba(0, 242, 254, 0.3);
    --accent-premium: #f39c12;
    --accent-premium-glow: rgba(243, 156, 18, 0.3);
    
    --text-primary: #f5f6fa;
    --text-secondary: #a0a5c0;
    --text-muted: #676b85;
    
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-premium: rgba(243, 156, 18, 0.3);
    
    --font-sans: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
}

/* Background Animated Gradient Blobs */
.bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: blob-float 20s infinite alternate;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-purple);
    top: -10%;
    left: -10%;
}

.blob-2 {
    width: 600px;
    height: 600px;
    background: var(--accent-pink);
    bottom: -15%;
    right: -10%;
    animation-delay: -5s;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-blue);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes blob-float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(80px, 50px) scale(1.1); }
}

/* App Wrapper Layout */
.app-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Sidebar Styling */
aside.sidebar {
    width: 280px;
    background: rgba(10, 11, 16, 0.85);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
    position: fixed;
    height: 100vh;
    z-index: 10;
    transition: var(--transition);
    overflow-y: auto;
}

aside.sidebar::-webkit-scrollbar {
    width: 0px;
    background: transparent;
}
/* Sidebar Header (Hidden on Desktop, Visible inside Mobile Drawer) */
.sidebar-header {
    display: none;
}

/* Main Content Header (Desktop & Mobile Layout) */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 20px;
    margin-bottom: 25px;
    width: 100%;
}

.header-left-wrap {
    display: flex;
    align-items: center;
    gap: 15px;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-logo i {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px var(--accent-purple-glow));
}

.app-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(to right, #ffffff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.app-header-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 5px;
}

.app-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

.header-right-wrap {
    display: flex;
    align-items: center;
}

/* Admin shortcut inside header */
.btn-admin-shortcut {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.btn-admin-shortcut:hover {
    background: rgba(142, 45, 226, 0.1);
    border-color: var(--accent-purple);
    color: var(--accent-blue);
    box-shadow: 0 0 10px var(--accent-purple-glow);
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 14px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.sidebar-menu li a:hover {
    color: var(--text-primary);
    background: var(--bg-card);
    border-color: var(--border);
    transform: translateX(5px);
}

.sidebar-menu li.active a {
    color: var(--text-primary);
    background: linear-gradient(135deg, rgba(142, 45, 226, 0.25), rgba(255, 0, 127, 0.15));
    border-color: rgba(142, 45, 226, 0.4);
    box-shadow: 0 4px 15px rgba(142, 45, 226, 0.15);
}

.sidebar-menu li a i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 20px 10px 0 10px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.admin-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
    border-radius: 8px;
}

.admin-link:hover {
    color: var(--accent-blue);
    background: rgba(0, 242, 254, 0.05);
}

/* Main Content Area */
main.main-content {
    flex-grow: 1;
    margin-left: 280px;
    padding: 40px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Status Ticker Marquee Wrapper */
.status-ticker-wrap {
    display: flex;
    align-items: center;
    background: rgba(15, 18, 36, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 12px;
    padding: 12px 20px;
    overflow: hidden;
    gap: 15px;
    box-shadow: var(--shadow);
    position: relative;
}

.ticker-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-pink);
    text-shadow: 0 0 8px var(--accent-pink-glow);
    white-space: nowrap;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    padding-right: 15px;
    z-index: 2;
}

.ticker-content-box {
    flex-grow: 1;
    overflow: hidden;
    position: relative;
    height: 24px;
    display: flex;
    align-items: center;
}

.ticker-items {
    display: flex;
    white-space: nowrap;
    position: absolute;
    left: 0;
    width: max-content;
    align-items: center;
    height: 100%;
    will-change: transform;
    animation: marquee 35s linear infinite;
}

.status-ticker-wrap:hover .ticker-items {
    animation-play-state: paused;
}

.ticker-item {
    padding-right: 80px; /* Large space between messages */
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.ticker-item i {
    color: var(--accent-blue);
}

@keyframes marquee {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-50%, 0, 0); }
}

/* Top Premium Bar */
.premium-bar {
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 16px;
    padding: 20px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
    transition: var(--transition);
    flex-wrap: wrap;
    gap: 15px;
}

.premium-bar.unlocked {
    border-color: var(--border-premium);
    background: linear-gradient(135deg, rgba(22, 24, 43, 0.8), rgba(243, 156, 18, 0.05));
    box-shadow: 0 0 20px rgba(243, 156, 18, 0.1);
}

.premium-status-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.premium-badge {
    background: rgba(142, 45, 226, 0.05);
    border: 1px solid rgba(142, 45, 226, 0.35);
    padding: 8px 16px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.78rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #a0a5c5;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: inset 0 0 10px rgba(142, 45, 226, 0.1);
    transition: var(--transition);
}

.unlocked .premium-badge {
    background: linear-gradient(135deg, #f39c12, #f1c40f);
    color: #000 !important;
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 0 15px rgba(243, 156, 18, 0.4), inset 0 1px 1px rgba(255,255,255,0.4);
    font-weight: 800;
}

.premium-status-text h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

.premium-status-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.premium-key-form {
    display: none !important;
}

.premium-key-form input {
    flex-grow: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.premium-key-form input:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 10px var(--accent-purple-glow);
}

.unlocked .premium-key-form input {
    border-color: var(--accent-premium);
    color: var(--accent-premium);
}

.premium-key-form button {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    color: white;
    border: none;
    padding: 0 24px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.premium-key-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 0, 127, 0.4);
}

.unlocked .premium-key-form button.deactivate-btn {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.unlocked .premium-key-form button.deactivate-btn:hover {
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
}

/* Tabs Display */
.tab-content {
    display: none;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.tab-content.active {
    display: grid;
    opacity: 1;
    transform: translateY(0);
}

/* Tab: Music Player */
#music-tab.tab-content.active {
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
}

@media(max-width: 1024px) {
    #music-tab.tab-content.active {
        grid-template-columns: 1fr;
    }
}

.music-player-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 20px;
    padding: 20px 25px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.25, 0.8, 0.25, 1), padding 0.6s, opacity 0.6s;
    max-height: 330px;
    width: 100%;
}

.music-player-panel.collapsed {
    padding: 15px 25px;
    max-height: 65px;
}

.music-player-panel-inner {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 1;
    transition: opacity 0.4s ease;
}

.music-player-panel.collapsed .music-player-panel-inner {
    opacity: 0;
    pointer-events: none;
}

.player-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.music-player-panel.collapsed .player-placeholder {
    opacity: 1;
    pointer-events: auto;
}

.player-placeholder i {
    font-size: 1.6rem;
    color: var(--accent-purple);
    text-shadow: 0 0 10px var(--accent-purple-glow);
}

.music-player-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--accent-purple), var(--accent-pink));
}


.track-details {
    text-align: center;
    margin-bottom: 12px;
}

.track-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 3px;
    letter-spacing: 0.5px;
}

.track-artist {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Audio Visualizer Canvas */
.visualizer-container {
    width: 100%;
    height: 45px;
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.visualizer-container canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Player Controls & Seekbar */
.player-controls-wrap {
    width: 100%;
}

.progress-time-container {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 5px;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    cursor: pointer;
}

.slider-progress {
    position: absolute;
    height: 100%;
    width: 0%;
    background: linear-gradient(to right, var(--accent-purple), var(--accent-pink));
    border-radius: 3px;
    pointer-events: none;
}

.slider-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-primary);
    top: 50%;
    left: 0%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 8px var(--accent-pink-glow);
    transition: width 0.1s, height 0.1s;
    pointer-events: none;
}

.slider-container:hover .slider-handle {
    width: 14px;
    height: 14px;
}

/* Controls buttons */
.buttons-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 25px;
    margin-top: 15px;
}

.control-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.15rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.control-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.control-btn.active {
    color: var(--accent-blue);
    text-shadow: 0 0 8px var(--accent-blue-glow);
}

.play-pause-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 8px 20px rgba(142, 45, 226, 0.3);
}

.play-pause-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(255, 0, 127, 0.4);
    color: white;
}

/* Volume & Speed Settings Grid */
.audio-settings-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 20px;
    width: 100%;
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.setting-control-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.setting-control-row i {
    color: var(--text-secondary);
    font-size: 0.9rem;
    width: 18px;
    text-align: center;
}

.setting-slider-container {
    flex-grow: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    position: relative;
    cursor: pointer;
}

.setting-slider-progress {
    position: absolute;
    height: 100%;
    border-radius: 2px;
}

.volume-progress-bar {
    width: 70%; /* Default volume */
    background: var(--text-secondary);
}

.speed-progress-bar {
    width: 50%; /* Default 1.0x speed */
    background: var(--accent-blue);
    box-shadow: 0 0 6px var(--accent-blue-glow);
}

/* Playlist Panel */
.playlist-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    max-height: 550px;
}

.playlist-header {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
}

.playlist-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.playlist-header h3 i {
    color: var(--accent-purple);
}

.tracks-list-container {
    overflow-y: auto;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-right: 5px;
}

/* Custom scrollbar */
.tracks-list-container::-webkit-scrollbar,
.utility-panel::-webkit-scrollbar,
textarea::-webkit-scrollbar {
    width: 6px;
}

.tracks-list-container::-webkit-scrollbar-track,
.utility-panel::-webkit-scrollbar-track,
textarea::-webkit-scrollbar-track {
    background: transparent;
}

.tracks-list-container::-webkit-scrollbar-thumb,
.utility-panel::-webkit-scrollbar-thumb,
textarea::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.tracks-list-container::-webkit-scrollbar-thumb:hover,
.utility-panel::-webkit-scrollbar-thumb:hover,
textarea::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

.track-item {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    gap: 15px;
}

.track-item:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--border);
    transform: translateY(-1px);
}

.track-item.active {
    background: rgba(142, 45, 226, 0.15);
    border-color: rgba(142, 45, 226, 0.3);
}

.track-item-cover-icon {
    width: 45px;
    height: 45px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: var(--transition);
    flex-shrink: 0;
}

.track-item:hover .track-item-cover-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(255,255,255,0.15);
}

.track-item-info {
    flex-grow: 1;
    overflow: hidden;
}

.track-item-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-item-artist {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-item-status-icon {
    color: var(--accent-pink);
    font-size: 0.85rem;
    display: none;
}

.track-item.active .track-item-status-icon {
    display: block;
}

/* Utilities Section */
#utils-tab.tab-content.active {
    grid-template-columns: 1fr;
    gap: 30px;
}

.utilities-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
}

.utilities-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.utilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.utility-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.utility-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
    background: var(--bg-card-hover);
}

.utility-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--accent-blue), var(--accent-purple));
    opacity: 0.7;
}

.utility-card.premium-card::before {
    background: linear-gradient(to right, #f39c12, #f1c40f);
}

.utility-icon-wrap {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--accent-blue);
    margin-bottom: 25px;
    transition: var(--transition);
}

.utility-card:hover .utility-icon-wrap {
    background: rgba(0, 242, 254, 0.1);
    border-color: var(--accent-blue);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.premium-card .utility-icon-wrap {
    color: var(--accent-premium);
}

.premium-card:hover .utility-icon-wrap {
    background: rgba(243, 156, 18, 0.1);
    border-color: var(--accent-premium);
    box-shadow: 0 0 15px rgba(243, 156, 18, 0.2);
}

.utility-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.utility-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-premium-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 0.75rem;
    background: rgba(243, 156, 18, 0.15);
    border: 1px solid var(--border-premium);
    color: var(--accent-premium);
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Locked Card Overlay */
.card-lock-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 11, 16, 0.6);
    backdrop-filter: blur(2px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: var(--transition);
    z-index: 5;
}

.card-lock-overlay i {
    font-size: 2rem;
    color: var(--accent-premium);
    margin-bottom: 8px;
    text-shadow: 0 0 10px var(--accent-premium-glow);
}

.card-lock-overlay span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.unlocked .card-lock-overlay {
    opacity: 0;
    pointer-events: none;
}

/* Tool View Display Container */
.utility-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    min-height: 400px;
    animation: fadeIn 0.4s ease forwards;
}

.utility-panel.active {
    display: flex;
}

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

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
    margin-bottom: 25px;
}

.panel-title-wrap {
    display: flex;
    align-items: center;
    gap: 15px;
}

.back-to-grid-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.85rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.back-to-grid-btn:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
    border-color: var(--border-hover);
}

/* Interactive Utility Inputs */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.textarea-wrap {
    position: relative;
    width: 100%;
}

textarea.tool-input,
textarea.tool-output {
    width: 100%;
    min-height: 180px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    color: var(--text-primary);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    resize: vertical;
    transition: var(--transition);
}

textarea.tool-input:focus,
textarea.tool-output:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px var(--accent-blue-glow);
}

.tool-output-readonly {
    background: rgba(255,255,255,0.02) !important;
    cursor: text;
}

/* Utility buttons */
.tool-actions-wrap {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.btn-tool {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-tool:hover {
    background: var(--accent-purple);
    border-color: transparent;
    box-shadow: 0 5px 15px var(--accent-purple-glow);
}

.btn-tool-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border: none;
    color: white;
}

.btn-tool-primary:hover {
    box-shadow: 0 5px 15px var(--accent-blue-glow);
}

/* Specific Utility Interfaces */
/* QR Code UI */
.qr-layout {
    display: flex;
    gap: 30px;
}

.qr-inputs {
    flex-grow: 1;
}

.qr-result-box {
    width: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-input);
    padding: 20px;
    gap: 15px;
    flex-shrink: 0;
}

#qrcode-output {
    width: 180px;
    height: 180px;
    background: white;
    border-radius: 8px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#qrcode-output img {
    max-width: 100%;
    max-height: 100%;
}

@media(max-width: 768px) {
    .qr-layout {
        flex-direction: column;
    }
    .qr-result-box {
        width: 100%;
    }
}

/* Password Gen UI */
.pw-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.checkbox-option {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-option input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-premium);
}

/* Split Pane for Markdown */
.split-pane {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    min-height: 300px;
}

.markdown-preview-pane {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    background: rgba(255,255,255,0.01);
    color: var(--text-primary);
    overflow-y: auto;
    font-size: 0.95rem;
    line-height: 1.6;
}

.markdown-preview-pane h1,
.markdown-preview-pane h2,
.markdown-preview-pane h3 {
    margin-top: 15px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 5px;
}

.markdown-preview-pane ul,
.markdown-preview-pane ol {
    margin-left: 20px;
    margin-bottom: 10px;
}

.markdown-preview-pane code {
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

@media(max-width: 768px) {
    .split-pane {
        grid-template-columns: 1fr;
    }
}

/* Notification Dialogs */
.toast-msg {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: rgba(20, 20, 30, 0.95);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 15px 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 100;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast-msg.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-msg.success {
    border-color: #2ecc71;
}

.toast-msg.success i {
    color: #2ecc71;
}

.toast-msg.error {
    border-color: #e74c3c;
}

.toast-msg.error i {
    color: #e74c3c;
}

.toast-msg.info {
    border-color: var(--accent-blue);
}

.toast-msg.info i {
    color: var(--accent-blue);
}

/* Key prompt Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #07080c;
    backdrop-filter: none;
    z-index: 99999;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 80px;
}

.modal-overlay.active {
    display: flex;
}

.key-modal {
    background: #0f1224;
    border: 1px solid var(--border-premium);
    border-radius: 20px;
    padding: 35px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: scaleUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes scaleUp {
    from { transform: scale(0.85); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.key-modal-icon {
    font-size: 3rem;
    color: var(--accent-premium);
    margin-bottom: 20px;
    text-shadow: 0 0 15px var(--accent-premium-glow);
}

.key-modal h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.key-modal p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.5;
}

.key-modal-input-wrap {
    width: 100%;
    margin-bottom: 20px;
}

.key-modal-input-wrap input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px;
    color: var(--text-primary);
    text-align: center;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.key-modal-input-wrap input:focus {
    outline: none;
    border-color: var(--accent-premium);
    box-shadow: 0 0 10px var(--accent-premium-glow);
}

.key-modal-btns {
    display: flex;
    gap: 15px;
    width: 100%;
}

.key-modal-btns button {
    flex-grow: 1;
    padding: 12px;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-cancel-modal {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-cancel-modal:hover {
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
}

.btn-submit-modal {
    background: linear-gradient(135deg, #f39c12, #f1c40f);
    border: none;
    color: #000;
}

.btn-submit-modal:hover {
    box-shadow: 0 5px 15px var(--accent-premium-glow);
    transform: translateY(-2px);
}

/* Mobile Menu Toggle Button (Hamburger Menu) */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    color: var(--text-primary);
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background: rgba(0, 242, 254, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    box-shadow: 0 0 12px rgba(0, 242, 254, 0.25);
    transform: scale(1.05);
}

.mobile-menu-toggle i {
    transition: transform 0.3s ease;
}

/* Responsive Styles & Mobile Left slide-out navigation */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
        position: relative;
        top: auto;
        left: auto;
        box-shadow: none;
        z-index: 1;
    }

    /* Convert Sidebar to off-canvas slide-out Left menu */
    aside.sidebar {
        width: 280px;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 999;
        transform: translateX(-100%);
        transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        border-right: 1px solid var(--border);
        border-top: none;
        border-radius: 0 20px 20px 0;
        box-shadow: 10px 0 30px rgba(0,0,0,0.5);
        background: rgba(10, 11, 16, 0.96);
        backdrop-filter: blur(25px) saturate(180%);
        padding: 30px 20px;
        display: flex;
        flex-direction: column;
    }

    aside.sidebar.active {
        transform: translateX(0);
    }

    /* Sidebar Drawer Header (Mobile Only) */
    .sidebar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        margin-bottom: 25px;
        padding-bottom: 15px;
        border-bottom: 1px solid var(--border);
    }

    .sidebar-logo-small {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .sidebar-logo-small i {
        font-size: 1.5rem;
        background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        filter: drop-shadow(0 0 10px var(--accent-purple-glow));
    }

    .sidebar-logo-small h1 {
        font-size: 1.25rem;
        font-weight: 700;
        letter-spacing: 0.5px;
        color: var(--text-primary);
    }

    .sidebar-close-btn {
        background: none;
        border: none;
        color: var(--text-secondary);
        font-size: 2rem;
        cursor: pointer;
        line-height: 1;
        transition: var(--transition);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar-close-btn:hover {
        color: var(--accent-pink);
    }

    .sidebar-menu {
        flex-direction: column;
        justify-content: flex-start;
        width: 100%;
        gap: 8px;
        margin-bottom: 0;
    }

    .sidebar-menu li {
        flex-grow: 0;
        text-align: left;
    }

    .sidebar-menu li a {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 15px;
        padding: 14px 20px;
        font-size: 0.9rem;
        border-radius: 12px;
        background: transparent;
        border-color: transparent;
    }

    .sidebar-menu li a i {
        font-size: 1.2rem;
        width: 24px;
    }

    .sidebar-menu li a span {
        font-size: 0.9rem;
    }

    .sidebar-menu li.active a {
        background: linear-gradient(135deg, rgba(142, 45, 226, 0.25), rgba(255, 0, 127, 0.15));
        border-color: rgba(142, 45, 226, 0.4);
    }

    .sidebar-footer {
        display: flex; /* Show admin link inside mobile drawer footer */
    }

    #mobile-admin-btn {
        display: none !important; /* Hide button in utilities since we have footer */
    }

    /* Shift Main Content to take full space, with standard padding since hamburger sits in-line */
    main.main-content {
        margin-left: 0;
        padding: 25px 15px;
        gap: 20px;
    }

    /* Mobile header improvements */
    .app-header {
        padding-bottom: 15px;
        margin-bottom: 20px;
    }

    @media (max-width: 576px) {
        .app-desc, .app-header-divider {
            display: none !important;
        }
    }

    /* Premium key bar adjustments */
    .premium-bar {
        padding: 15px 20px;
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }

    .premium-status-info {
        justify-content: flex-start;
    }

    .premium-key-form {
        max-width: 100%;
    }

    /* Music Player modifications */
    #music-tab.tab-content.active {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .music-player-panel {
        padding: 25px 20px;
    }

    .album-art-container {
        width: 180px;
        height: 180px;
        margin-bottom: 20px;
    }

    .vinyl-center-cover {
        width: 80px;
        height: 80px;
        border-width: 3px;
    }

    .track-title {
        font-size: 1.2rem;
    }

    .volume-control-wrap {
        width: 90%;
        margin-left: 5%;
    }

    .playlist-panel {
        padding: 20px;
        max-height: 400px;
    }

    /* Utilities cards and panels */
    .utilities-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .utility-card {
        padding: 20px;
    }

    .utility-icon-wrap {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
        margin-bottom: 15px;
    }

    .utility-panel {
        padding: 20px;
    }

    /* Markdown Editor responsive split */
    .split-pane {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    textarea.tool-input,
    textarea.tool-output {
        min-height: 140px;
    }

    .qr-layout {
        flex-direction: column;
        gap: 20px;
    }

    .qr-result-box {
        width: 100%;
        padding: 15px;
    }

    /* Modal dialog */
    .key-modal {
        padding: 25px 20px;
    }

    .key-modal-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .key-modal h3 {
        font-size: 1.25rem;
    }
}

/* Anti-Copy and Text Selection Prevention */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Allow text selection inside utility input fields, textareas and output zones */
input, textarea, select, [contenteditable="true"], .markdown-preview-pane, .markdown-preview-pane * {
    -webkit-user-select: text !important;
    -moz-user-select: text !important;
    -ms-user-select: text !important;
    user-select: text !important;
}

/* App Footer Layout */
.app-footer {
    margin-top: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(25px) saturate(180%);
    border-radius: 16px;
    padding: 20px 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-links a:hover {
    color: var(--accent-pink);
    text-shadow: 0 0 8px var(--accent-pink-glow);
}

@media(max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        justify-content: center;
    }
}

/* File Uploader Drag Zone Styling overrides */
.file-drag-zone:hover {
    border-color: var(--accent-pink) !important;
    background: rgba(255, 255, 255, 0.05) !important;
}

/* File Download Cards Design System */
.file-download-card {
    position: relative;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
}

/* Diagonal glass reflection effect */
.file-download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        to right, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.04) 50%, 
        rgba(255, 255, 255, 0) 100%
    );
    transform: skewX(-25deg);
    transition: 0.75s;
}

.file-download-card:hover::before {
    left: 150%;
}

.file-download-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 242, 254, 0.35);
    box-shadow: 0 20px 45px 0 rgba(0, 242, 254, 0.15), 0 0 0 1px rgba(0, 242, 254, 0.2);
}

.file-card-top {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.file-card-icon-wrap {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.1), rgba(0, 102, 255, 0.15));
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    font-size: 1.3rem;
    flex-shrink: 0;
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

.file-card-meta {
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.file-card-title {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-card-filename {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: monospace;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
}

.file-label-badge {
    font-size: 0.65rem;
    padding: 3px 8px;
    border-radius: 6px;
    color: white;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 1px solid transparent;
}

.absolute-top-right {
    position: absolute;
    top: 15px;
    right: 15px;
    margin: 0 !important;
}

.file-access-badge {
    font-size: 0.68rem;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.free-badge {
    background: rgba(46, 204, 113, 0.12);
    color: #2ecc71;
    border: 1px solid rgba(46, 204, 113, 0.25);
}

.premium-badge {
    background: rgba(241, 196, 15, 0.12);
    color: #f1c40f;
    border: 1px solid rgba(241, 196, 15, 0.25);
    text-shadow: 0 0 8px rgba(241, 196, 15, 0.3);
}

.btn-download-file {
    width: 100%;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.btn-download-file.active {
    background: linear-gradient(135deg, var(--accent-blue), #00f2fe);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
}

.btn-download-file.active:hover {
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.35);
    transform: translateY(-1px);
}

.btn-download-file.locked {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-download-file.locked:hover {
    background: rgba(241, 196, 15, 0.12);
    color: #f1c40f;
    border-color: rgba(241, 196, 15, 0.4);
}

/* Glowing Pulse Animations for Vietnamese Tags */
.label-glow-hot {
    animation: glow-pulse-hot 1.8s infinite;
}
.label-glow-docquyen {
    animation: glow-pulse-docquyen 1.8s infinite;
}
.label-glow-vip {
    animation: glow-pulse-vip 1.8s infinite;
}
.label-glow-sieupham {
    animation: glow-pulse-sieupham 1.8s infinite;
}
.label-glow-cucpham {
    animation: glow-pulse-cucpham 1.8s infinite;
}
.label-glow-update {
    animation: glow-pulse-update 1.8s infinite;
}

@keyframes glow-pulse-hot {
    0% { box-shadow: 0 0 4px rgba(255, 51, 102, 0.4); border-color: rgba(255, 51, 102, 0.4); }
    50% { box-shadow: 0 0 12px rgba(255, 51, 102, 0.7); border-color: rgba(255, 51, 102, 0.9); }
    100% { box-shadow: 0 0 4px rgba(255, 51, 102, 0.4); border-color: rgba(255, 51, 102, 0.4); }
}
@keyframes glow-pulse-docquyen {
    0% { box-shadow: 0 0 4px rgba(255, 159, 67, 0.4); border-color: rgba(255, 159, 67, 0.4); }
    50% { box-shadow: 0 0 12px rgba(255, 159, 67, 0.7); border-color: rgba(255, 159, 67, 0.9); }
    100% { box-shadow: 0 0 4px rgba(255, 159, 67, 0.4); border-color: rgba(255, 159, 67, 0.4); }
}
@keyframes glow-pulse-vip {
    0% { box-shadow: 0 0 4px rgba(241, 196, 15, 0.4); border-color: rgba(241, 196, 15, 0.4); }
    50% { box-shadow: 0 0 12px rgba(241, 196, 15, 0.7); border-color: rgba(241, 196, 15, 0.9); }
    100% { box-shadow: 0 0 4px rgba(241, 196, 15, 0.4); border-color: rgba(241, 196, 15, 0.4); }
}
@keyframes glow-pulse-sieupham {
    0% { box-shadow: 0 0 4px rgba(165, 94, 234, 0.4); border-color: rgba(165, 94, 234, 0.4); }
    50% { box-shadow: 0 0 12px rgba(165, 94, 234, 0.7); border-color: rgba(165, 94, 234, 0.9); }
    100% { box-shadow: 0 0 4px rgba(165, 94, 234, 0.4); border-color: rgba(165, 94, 234, 0.4); }
}
@keyframes glow-pulse-cucpham {
    0% { box-shadow: 0 0 4px rgba(253, 121, 168, 0.4); border-color: rgba(253, 121, 168, 0.4); }
    50% { box-shadow: 0 0 12px rgba(253, 121, 168, 0.7); border-color: rgba(253, 121, 168, 0.9); }
    100% { box-shadow: 0 0 4px rgba(253, 121, 168, 0.4); border-color: rgba(253, 121, 168, 0.4); }
}
@keyframes glow-pulse-update {
    0% { box-shadow: 0 0 4px rgba(46, 204, 113, 0.4); border-color: rgba(46, 204, 113, 0.4); }
    50% { box-shadow: 0 0 12px rgba(46, 204, 113, 0.7); border-color: rgba(46, 204, 113, 0.9); }
    100% { box-shadow: 0 0 4px rgba(46, 204, 113, 0.4); border-color: rgba(46, 204, 113, 0.4); }
}

.btn-copy-file:hover {
    background: rgba(0, 242, 254, 0.1) !important;
    border-color: var(--accent-blue) !important;
    color: var(--accent-blue) !important;
    box-shadow: 0 0 12px rgba(0, 242, 254, 0.3) !important;
    transform: scale(1.05);
}

/* Post Card Layout */
.post-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 25px;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
    text-align: left;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        to right, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.04) 50%, 
        rgba(255, 255, 255, 0) 100%
    );
    transform: skewX(-25deg);
    transition: 0.75s;
}

.post-card:hover::before {
    left: 150%;
}

.post-card:hover {
    transform: translateY(-4px);
    border-color: rgba(142, 45, 226, 0.35);
    box-shadow: 0 20px 45px 0 rgba(142, 45, 226, 0.15), 0 0 0 1px rgba(142, 45, 226, 0.2);
}

/* ==========================================================================
   PREMIUM THEME OVERRIDES (Luxury Gold & Amber Palette)
   ========================================================================== */
body.unlocked {
    --accent-purple: #f39c12;
    --accent-purple-glow: rgba(243, 156, 18, 0.3);
    --accent-pink: #f1c40f;
    --accent-pink-glow: rgba(241, 196, 15, 0.3);
    --border-hover: rgba(243, 156, 18, 0.25);
}

/* Crown Pulse Glow in Header */
.unlocked .premium-badge i {
    animation: crown-glow 2s infinite ease-in-out;
}

@keyframes crown-glow {
    0% { text-shadow: 0 0 5px rgba(243, 156, 18, 0.4); transform: scale(1); }
    50% { text-shadow: 0 0 15px rgba(243, 156, 18, 0.9); transform: scale(1.15); }
    100% { text-shadow: 0 0 5px rgba(243, 156, 18, 0.4); transform: scale(1); }
}

/* verified status logo rotation */
body.unlocked .app-logo i {
    color: #f39c12 !important;
    text-shadow: 0 0 15px rgba(243, 156, 18, 0.6);
    animation: spin-glow 10s infinite linear;
}

@keyframes spin-glow {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

/* Premium Card Border glows in grid */
body.unlocked .utility-card.premium-card {
    border-color: rgba(243, 156, 18, 0.35);
    box-shadow: 0 8px 32px 0 rgba(243, 156, 18, 0.15);
}

body.unlocked .utility-card.premium-card:hover {
    border-color: #f1c40f;
    box-shadow: 0 12px 40px 0 rgba(243, 156, 18, 0.35);
}

/* Gold Vinyl Disc Frame border */
body.unlocked .vinyl-disc {
    border-color: #f39c12 !important;
    box-shadow: 0 0 25px rgba(243, 156, 18, 0.3), inset 0 0 0 4px #000, 0 15px 35px rgba(0,0,0,0.5);
}

/* Tab button highlight update */
body.unlocked .sidebar-menu li.active a {
    color: #f39c12 !important;
    text-shadow: 0 0 8px rgba(243, 156, 18, 0.4);
}

body.unlocked .sidebar-menu li.active::before {
    background: linear-gradient(to bottom, #f39c12, #f1c40f) !important;
}

/* ==========================================================================
   FLOATING CHAT DRAWER STYLING
   ========================================================================== */
.chat-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 380px;
    height: 100dvh;
    background: #0f1224;
    border-left: 1px solid var(--border);
    box-shadow: -10px 0 35px rgba(0,0,0,0.6);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    overflow: hidden;
}

.chat-drawer.active {
    transform: translateX(0);
}

@media(max-width: 480px) {
    .chat-drawer {
        width: 100vw;
        height: 100dvh;
    }
}

.chat-drawer-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 11, 16, 0.4);
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
}

.chat-online-badge {
    font-size: 0.75rem;
    color: #2ecc71;
    background: rgba(46, 204, 113, 0.15);
    padding: 3px 8px;
    border-radius: 20px;
    margin-left: 8px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.chat-online-badge i {
    font-size: 0.5rem;
    animation: pulse-badge 1.5s infinite alternate;
}

@keyframes pulse-badge {
    0% { transform: scale(0.85); opacity: 0.5; }
    100% { transform: scale(1.15); opacity: 1; }
}

.chat-close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.chat-close-btn:hover {
    color: var(--accent-pink);
    transform: scale(1.1);
}

/* Chat Welcome/Login view */
.chat-login-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 30px;
    flex-grow: 1;
    text-align: center;
    max-height: 100%;
    overflow-y: auto;
}

.chat-login-avatar-wrap {
    position: relative;
    width: 100px;
    height: 100px;
    margin-bottom: 20px;
}

.chat-login-avatar-wrap img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid var(--accent-purple);
    background: rgba(255,255,255,0.05);
    box-shadow: 0 0 20px rgba(142, 45, 226, 0.3);
}

#chat-refresh-avatar-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: var(--transition);
}

#chat-refresh-avatar-btn:hover {
    transform: rotate(180deg) scale(1.1);
}

.chat-login-box h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.chat-login-box p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 25px;
}

/* Chat Main Layout */
.chat-main-box {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow: hidden;
    position: relative;
}

.chat-messages-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-messages-container::-webkit-scrollbar {
    width: 4px;
}

.chat-messages-container::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
}

/* Chat bubble styling */
.chat-msg-row {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    max-width: 85%;
}

.chat-msg-row.me {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.chat-msg-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    object-fit: cover;
}

.chat-msg-content-wrapper {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-msg-sender {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.chat-msg-sender.premium-sender {
    color: #f1c40f;
    text-shadow: 0 0 5px rgba(241, 196, 15, 0.3);
}

.chat-msg-bubble {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 10px 14px;
    border-radius: 0 16px 16px 16px;
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.4;
    word-break: break-word;
}

.chat-msg-row.me .chat-msg-bubble {
    background: rgba(142, 45, 226, 0.15);
    border-color: rgba(142, 45, 226, 0.3);
    border-radius: 16px 0 16px 16px;
}

/* If sender is premium, add golden tint to their bubble border */
.chat-msg-row.premium-msg .chat-msg-bubble {
    border-color: rgba(243, 156, 18, 0.25);
    background: linear-gradient(135deg, rgba(15, 18, 36, 0.6), rgba(243, 156, 18, 0.03));
}

.chat-msg-row.me.premium-msg .chat-msg-bubble {
    border-color: rgba(243, 156, 18, 0.4);
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.15), rgba(241, 196, 15, 0.05));
}

.chat-msg-time {
    font-size: 0.65rem;
    color: var(--text-muted);
    align-self: flex-end;
}

.chat-msg-row.me .chat-msg-time {
    align-self: flex-start;
}

/* Sticker display inside bubble */
.chat-sticker-img {
    max-width: 120px;
    border-radius: 8px;
    margin-top: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Emojis & Stickers panels */
.chat-selector-panel {
    position: absolute;
    bottom: 95px;
    left: 20px;
    right: 20px;
    background: #0f1224;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    display: none;
    z-index: 10;
}

.chat-selector-panel.active {
    display: block;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
    max-height: 150px;
    overflow-y: auto;
}

.emoji-item {
    font-size: 1.4rem;
    text-align: center;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: var(--transition);
}

.emoji-item:hover {
    background: rgba(255,255,255,0.08);
    transform: scale(1.15);
}

.sticker-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    max-height: 180px;
    overflow-y: auto;
}

.sticker-item {
    cursor: pointer;
    border-radius: 6px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid transparent;
}

.sticker-item img {
    width: 100%;
    height: auto;
    object-fit: contain;
    aspect-ratio: 1;
}

.sticker-item:hover {
    border-color: var(--accent-purple);
    transform: scale(1.05);
    background: rgba(255,255,255,0.02);
}

/* Chat Input Footer wrapper */
.chat-input-wrapper {
    padding: 15px 20px 20px 20px;
    border-top: 1px solid var(--border);
    background: rgba(10, 11, 16, 0.4);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-input-actions {
    display: flex;
    gap: 12px;
}

.chat-input-actions button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.15rem;
    cursor: pointer;
    transition: var(--transition);
}

.chat-input-actions button:hover {
    color: var(--accent-pink);
    transform: scale(1.1);
}

.chat-input-row {
    display: flex;
    gap: 10px;
}

.chat-input-row input {
    flex-grow: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.chat-input-row input:focus {
    border-color: var(--accent-purple);
}

.chat-input-row button {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.chat-input-row button:hover {
    box-shadow: 0 4px 12px var(--accent-purple-glow);
    transform: translateY(-2px);
}

/* Premium Overrides for Chat active state */
body.unlocked .chat-drawer {
    background: #0f1224;
    border-left-color: rgba(243, 156, 18, 0.2);
}

body.unlocked .chat-msg-row.me .chat-msg-bubble {
    background: rgba(243, 156, 18, 0.12);
}

body.unlocked #chat-refresh-avatar-btn {
    background: linear-gradient(135deg, #f39c12, #f1c40f);
    color: #000;
}

body.unlocked .chat-input-row button {
    background: linear-gradient(135deg, #f39c12, #f1c40f);
    color: #000;
}

body.unlocked .chat-input-row button:hover {
    box-shadow: 0 4px 12px rgba(243, 156, 18, 0.4);
}