/* Minimalist Dark Theme Styles */

/* Layout Components */
.page-centered {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    padding: 40px;
    width: 90%;
}

/* Header Styles */
.header {
    margin-bottom: 80px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border-primary);
}

.header h1 {
    font-size: 5rem;
    font-weight: 100;
    letter-spacing: -3px;
    margin-bottom: 10px;
    color: var(--color-text-primary);
    line-height: 1;
}

.tagline {
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: 300;
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* Action Grid */
.actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.action-item {
    padding: 40px 0;
    border-top: 2px solid var(--color-border-accent);
    position: relative;
    transition: all 0.3s ease;
}

.action-item:hover {
    padding-left: 20px;
}

.action-item h2 {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.action-item a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    padding-bottom: 5px;
}

.action-item a::after {
    content: '→';
    position: absolute;
    right: -25px;
    opacity: 0;
    transition: all 0.3s ease;
}

.action-item a:hover {
    color: var(--color-hover);
}

.action-item a:hover::after {
    opacity: 1;
    right: -30px;
}

/* Decoration Elements */
.decoration {
    position: fixed;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    font-size: 20rem;
    color: var(--color-bg-secondary);
    font-weight: 900;
    z-index: -1;
    user-select: none;
}

/* Footer Note */
.footer-note {
    margin-top: 100px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border-primary);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* Form Styles */
.form-container {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.form-group input {
    width: 100%;
    padding: 15px 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border-primary);
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-bottom-color: var(--color-border-accent);
}

.form-group input::placeholder {
    color: var(--color-text-tertiary);
}

/* Button Styles */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px 50px;
    background: transparent;
    border: 2px solid var(--color-border-accent);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-accent);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn:hover {
    color: var(--color-bg-primary);
}

.btn:hover::before {
    left: 0;
}

.btn-primary {
    width: 100%;
    margin-top: 20px;
}

/* Link Styles */
.text-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    padding-bottom: 2px;
}

.text-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.text-link:hover {
    color: var(--color-hover);
}

.text-link:hover::after {
    width: 100%;
}

.form-footer {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--color-border-primary);
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

/* Navigation Styles */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-primary);
    z-index: 1000;
    padding: 20px 0;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 2px;
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
    z-index: 1001;
}

.nav-logo:hover {
    color: var(--color-accent);
}

/* Hamburger Menu Button */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: relative;
}

.nav-hamburger span {
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    transition: all 0.3s ease;
    transform-origin: center;
}

.nav-hamburger:hover span {
    background: var(--color-accent);
}

.nav-hamburger.active span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
}

.nav-hamburger.active span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--color-text-primary);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a.active {
    color: var(--color-accent);
}

/* Account for fixed nav spacing */
.has-nav {
    padding-top: 80px;
}

/* Content Section Styles */
.content-section {
    margin-bottom: 80px;
}

.content-section h2 {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 1px;
    color: var(--color-text-primary);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-border-primary);
}

/* Table Styles */
.table-container {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead th {
    text-align: left;
    padding: 20px 15px;
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border-accent);
}

.data-table tbody td {
    padding: 20px 15px;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-primary);
    font-size: 0.95rem;
}

.data-table tbody tr {
    transition: background 0.2s ease;
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-tertiary);
    font-style: italic;
}

/* Custom Audio Player - Mini Version */
.audio-player-mini {
    display: flex;
    align-items: center;
    gap: 15px;
}

.audio-player-mini audio {
    display: none;
}

.play-pause-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--color-accent);
    background: transparent;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.play-pause-btn:hover {
    background: var(--color-accent);
    transform: scale(1.1);
}

.play-pause-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-40%, -50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 0 8px 14px;
    border-color: transparent transparent transparent var(--color-accent);
    transition: all 0.3s ease;
}

.play-pause-btn:hover::before {
    border-left-color: var(--color-bg-primary);
}

.play-pause-btn.playing::before {
    border: none;
    width: 12px;
    height: 16px;
    background: linear-gradient(to right,
            var(--color-accent) 0%,
            var(--color-accent) 35%,
            transparent 35%,
            transparent 65%,
            var(--color-accent) 65%,
            var(--color-accent) 100%);
    transform: translate(-50%, -50%);
}

.play-pause-btn.playing:hover::before {
    background: linear-gradient(to right,
            var(--color-bg-primary) 0%,
            var(--color-bg-primary) 35%,
            transparent 35%,
            transparent 65%,
            var(--color-bg-primary) 65%,
            var(--color-bg-primary) 100%);
}

.audio-time {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 300;
    letter-spacing: 0.5px;
    min-width: 80px;
}

/* Action Buttons in Table */
.btn-group {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: center;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.btn-danger {
    border-color: #ff4444;
}

.btn-danger:hover {
    background: #ff4444;
    color: var(--color-bg-primary);
}

.btn-info {
    border-color: var(--color-accent);
}

.btn-info:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-container {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-primary);
    border-radius: 0;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-md {
    width: 90%;
    max-width: 600px;
}

.modal-lg {
    width: 90%;
    max-width: 900px;
}

.modal-header {
    padding: 30px 40px;
    border-bottom: 1px solid var(--color-border-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 1px;
    color: var(--color-text-primary);
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 2.5rem;
    line-height: 1;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--color-accent);
    transform: rotate(90deg);
}

.modal-body {
    padding: 40px;
}

/* File Input Styles */
.file-input-wrapper {
    position: relative;
    margin-top: 10px;
}

.file-input-label {
    display: block;
    padding: 40px;
    border: 2px dashed var(--color-border-primary);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
}

.file-input-label:hover {
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.02);
}

.file-input-label.has-file {
    border-color: var(--color-accent);
    border-style: solid;
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    overflow: hidden;
    z-index: -1;
}

.file-input-text {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.file-input-label:hover .file-input-text {
    color: var(--color-text-primary);
}

.file-name {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--color-accent);
    letter-spacing: 0.5px;
}

.form-help-text {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
    margin-top: 8px;
    letter-spacing: 0.5px;
}

/* Checkbox Styles */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border-primary);
    background: transparent;
    cursor: pointer;
    position: relative;
    appearance: none;
    -webkit-appearance: none;
    transition: all 0.3s ease;
}

.checkbox-wrapper input[type="checkbox"]:hover {
    border-color: var(--color-accent);
}

.checkbox-wrapper input[type="checkbox"]:checked {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.checkbox-wrapper input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-bg-primary);
    font-size: 14px;
    font-weight: bold;
}

.checkbox-label {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    letter-spacing: 0.5px;
    cursor: pointer;
    margin: 0;
    text-transform: none;
}

/* Textarea Styles */
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: transparent;
    border: 1px solid var(--color-border-primary);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    font-weight: 300;
    letter-spacing: 0.5px;
    line-height: 1.6;
    font-family: 'Courier New', monospace;
    transition: all 0.3s ease;
    resize: vertical;
    min-height: 200px;
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--color-border-accent);
}

.form-group textarea::placeholder {
    color: var(--color-text-tertiary);
}

/* Details Grid Layout */
.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.detail-column {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

@media (max-width: 768px) {
    .details-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Player Tabs */
.player-tabs {
    display: flex;
    gap: 2px;
    margin-bottom: -1px;
    position: relative;
    z-index: 1;
}

.player-tab {
    padding: 12px 30px;
    background: transparent;
    border: 1px solid var(--color-border-primary);
    border-bottom: none;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

.player-tab:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.player-tab.active {
    color: var(--color-accent);
    background: var(--color-bg-secondary);
    border-bottom-color: var(--color-bg-secondary);
}

/* Full Audio Player Styles */
.audio-player-full {
    padding: 40px;
    border: 1px solid var(--color-border-primary);
    background: var(--color-bg-secondary);
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
    position: relative;
}

.player-view {
    width: 100%;
    display: none;
    min-height: 200px;
}

.player-view.active {
    display: block;
}

#visualizer {
    width: 100%;
    max-width: 800px;
    height: 200px;
    border: 1px solid var(--color-border-primary);
    background: var(--color-bg-secondary);
    border-radius: 5px;
    margin: 0 auto;
    display: block;
}

/* Lyrics Display */
.lyrics-display {
    max-height: 300px;
    overflow-y: auto;
    padding: 20px;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent) var(--color-bg-primary);
}

.lyrics-display::-webkit-scrollbar {
    width: 8px;
}

.lyrics-display::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

.lyrics-display::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 4px;
}

.lyrics-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.lyrics-line {
    padding: 12px 20px;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-tertiary);
    transition: all 0.3s ease;
    border-radius: 4px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.lyrics-line.active {
    color: var(--color-accent);
    font-size: 1.3rem;
    font-weight: 400;
    background: rgba(0, 255, 0, 0.05);
    transform: scale(1.02);
}

.lyrics-line.passed {
    color: var(--color-text-secondary);
}

.lyrics-tag {
    padding: 8px 20px;
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 300;
    opacity: 0.5;
    margin: 20px 0 10px 0;
}

.lyrics-spacer {
    height: 20px;
}

.audio-player-full audio {
    width: 100%;
    max-width: 600px;
    height: 50px;
    border-radius: 5px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-primary);
    outline: none;
}

.audio-player-full audio:focus {
    border-color: var(--color-accent);
}

/* Webkit browsers (Chrome, Safari, Edge) */
.audio-player-full audio::-webkit-media-controls-panel {
    background-color: var(--color-bg-primary);
    border-radius: 5px;
}

.audio-player-full audio::-webkit-media-controls-play-button {
    background-color: var(--color-accent);
    border-radius: 50%;
}

.audio-player-full audio::-webkit-media-controls-current-time-display,
.audio-player-full audio::-webkit-media-controls-time-remaining-display {
    color: var(--color-text-primary);
    text-shadow: none;
}

.audio-player-full audio::-webkit-media-controls-timeline {
    background-color: var(--color-border-primary);
    border-radius: 25px;
    margin: 0 10px;
}

.audio-player-full audio::-webkit-media-controls-timeline::-webkit-slider-thumb {
    background-color: var(--color-accent);
    border-radius: 50%;
}

.audio-player-full audio::-webkit-media-controls-volume-slider {
    background-color: var(--color-border-primary);
    border-radius: 25px;
}

.audio-player-full audio::-webkit-media-controls-mute-button {
    filter: brightness(1.5);
}

/* Error Page Styles */
.error-container {
    text-align: center;
    max-width: 600px;
    padding: 3rem 2rem;
}

.error-code {
    font-size: 8rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(0, 255, 0, 0.3);
}

.error-container .header {
    margin-bottom: 1rem;
    padding-bottom: 0;
    border-bottom: none;
}

.error-container .tagline {
    margin-bottom: 2.5rem;
    opacity: 0.7;
}

.error-container .actions {
    justify-content: center;
}

/* Responsive Design - Mobile Friendly */
@media (max-width: 768px) {
    /* Reduce padding for mobile to maximize screen space */
    .container {
        padding: 20px 15px;
        width: 100%;
    }

    .has-nav {
        padding-top: 70px;
    }

    /* Header styles for mobile */
    .header {
        margin-bottom: 40px;
        padding-bottom: 20px;
    }

    .header h1 {
        font-size: 2.5rem;
        letter-spacing: -2px;
    }

    .tagline {
        font-size: 0.85rem;
        letter-spacing: 2px;
    }

    .header-top-row {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }

    .header-top-row h1 {
        font-size: 2rem;
    }

    .btn-login {
        width: 100%;
        justify-content: center;
    }

    .header-actions {
        flex-direction: column;
        gap: 10px;
    }

    .header-actions .btn {
        width: 100%;
        justify-content: center;
    }

    /* Actions grid to single column */
    .actions {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .action-item {
        padding: 30px 0;
    }

    .action-item h2 {
        font-size: 1.3rem;
    }

    /* Decoration - hide or minimize on mobile */
    .decoration {
        font-size: 8rem;
        right: 50%;
        transform: translate(50%, -50%);
        opacity: 0.3;
    }

    /* Form improvements for mobile */
    .form-container {
        padding: 0;
        width: 100%;
    }

    .form-group {
        margin-bottom: 25px;
    }

    .form-group label {
        font-size: 0.85rem;
        margin-bottom: 8px;
    }

    .form-group input,
    .form-group textarea {
        padding: 12px 0;
        font-size: 1rem;
    }

    /* Larger touch-friendly buttons */
    .btn {
        padding: 16px 30px;
        font-size: 0.85rem;
        min-height: 48px;
        letter-spacing: 1.5px;
    }

    .btn-sm {
        padding: 10px 16px;
        font-size: 0.75rem;
        min-height: 44px;
    }

    /* Navigation mobile optimization - Hamburger Menu */
    .nav-container {
        padding: 15px 0;
    }

    .nav-content {
        padding: 0 15px;
    }

    .nav-logo {
        font-size: 1.2rem;
        letter-spacing: 1px;
    }

    /* Show hamburger menu on mobile */
    .nav-hamburger {
        display: flex;
    }

    /* Hide menu by default on mobile, show as dropdown when active */
    .nav-menu {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: calc(100vh - 60px);
        background: var(--color-bg-secondary);
        border-left: 1px solid var(--color-border-primary);
        flex-direction: column;
        gap: 0;
        padding: 30px 0;
        transition: right 0.3s ease;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
        overflow-y: auto;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--color-border-primary);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        display: block;
        padding: 18px 25px;
        font-size: 0.85rem;
        width: 100%;
        text-align: left;
    }

    .nav-menu a::after {
        display: none;
    }

    .nav-menu a:hover {
        background: rgba(0, 255, 0, 0.05);
        color: var(--color-accent);
    }

    /* Prevent body scroll when menu is open */
    body.nav-open {
        overflow: hidden;
    }

    /* Add overlay when menu is open */
    body.nav-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    /* Content sections mobile spacing */
    .content-section {
        margin-bottom: 40px;
    }

    .content-section h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
        padding-bottom: 10px;
    }

    /* Table optimization for mobile - card layout */
    .table-container {
        overflow-x: visible;
    }

    .data-table {
        display: block;
    }

    .data-table thead {
        display: none;
    }

    .data-table tbody {
        display: block;
    }

    .data-table tbody tr {
        display: block;
        margin-bottom: 20px;
        border: 1px solid var(--color-border-primary);
        padding: 15px;
        border-radius: 4px;
    }

    .data-table tbody td {
        display: block;
        padding: 12px 0;
        border-bottom: none;
        text-align: left;
    }

    .data-table tbody td::before {
        content: attr(data-label);
        display: block;
        font-size: 0.75rem;
        color: var(--color-text-secondary);
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 5px;
        font-weight: 300;
    }

    .data-table tbody td:first-child {
        padding-top: 0;
        font-size: 1.1rem;
        font-weight: 400;
        color: var(--color-accent);
        border-bottom: 1px solid var(--color-border-primary);
        padding-bottom: 12px;
        margin-bottom: 8px;
    }

    .data-table tbody td:last-child {
        padding-bottom: 0;
        margin-top: 12px;
    }

    /* Audio player mobile optimization */
    .audio-player-mini {
        gap: 10px;
        flex-wrap: wrap;
    }

    .play-pause-btn {
        width: 48px;
        height: 48px;
    }

    .audio-time {
        min-width: 60px;
        font-size: 0.8rem;
    }

    /* Button groups for mobile */
    .btn-group {
        flex-direction: column;
        gap: 8px;
        width: 100%;
    }

    .btn-group .btn,
    .btn-group form {
        width: 100%;
    }

    .btn-group button {
        width: 100%;
    }

    /* Modal mobile optimization */
    .modal-container {
        max-height: 95vh;
        width: 95%;
    }

    .modal-md,
    .modal-lg {
        width: 95%;
        max-width: none;
    }

    .modal-header {
        padding: 20px 15px;
    }

    .modal-title {
        font-size: 1.4rem;
    }

    .modal-body {
        padding: 20px 15px;
    }

    .modal-close {
        width: 36px;
        height: 36px;
        font-size: 2rem;
    }

    /* File input mobile */
    .file-input-label {
        padding: 30px 15px;
    }

    /* Details grid mobile */
    .details-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .detail-column {
        gap: 20px;
    }

    /* Player tabs mobile */
    .player-tabs {
        gap: 1px;
    }

    .player-tab {
        padding: 12px 15px;
        font-size: 0.75rem;
        flex: 1;
        text-align: center;
    }

    /* Audio player full mobile */
    .audio-player-full {
        padding: 20px 15px;
        gap: 20px;
    }

    #visualizer {
        height: 150px;
    }

    .audio-player-full audio {
        max-width: 100%;
        height: 48px;
    }

    /* Lyrics display mobile */
    .lyrics-display {
        max-height: 250px;
        padding: 15px 10px;
    }

    .lyrics-line {
        padding: 10px 15px;
        font-size: 1rem;
        line-height: 1.6;
    }

    .lyrics-line.active {
        font-size: 1.15rem;
    }

    .lyrics-tag {
        padding: 6px 15px;
        font-size: 0.7rem;
        margin: 15px 0 8px 0;
    }

    /* Error page mobile */
    .error-code {
        font-size: 4rem;
    }

    .error-container {
        padding: 2rem 1rem;
    }

    /* Footer notes mobile */
    .footer-note {
        margin-top: 50px;
        padding-top: 30px;
        font-size: 0.8rem;
    }

    /* Form footer mobile */
    .form-footer {
        margin-top: 30px;
        padding-top: 20px;
        font-size: 0.8rem;
    }

    /* Checkbox mobile - larger touch target */
    .checkbox-wrapper input[type="checkbox"] {
        width: 24px;
        height: 24px;
    }

    /* Empty state mobile */
    .empty-state {
        padding: 40px 15px;
        font-size: 0.9rem;
    }
}

/* Tablet - show full navbar */
@media (min-width: 769px) and (max-width: 1024px) {
    .nav-content {
        padding: 0 30px;
    }

    .nav-menu {
        gap: 25px;
    }

    .nav-menu a {
        font-size: 0.85rem;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .header h1 {
        font-size: 2rem;
        letter-spacing: -1px;
    }

    .header-top-row h1 {
        font-size: 1.75rem;
    }

    .tagline {
        font-size: 0.75rem;
        letter-spacing: 1.5px;
    }

    .btn-login {
        padding: 12px 20px;
        font-size: 0.85rem;
    }

    .action-item h2 {
        font-size: 1.1rem;
    }

    .content-section h2 {
        font-size: 1.3rem;
    }

    .nav-logo {
        font-size: 1rem;
    }

    .nav-hamburger {
        width: 26px;
        height: 20px;
    }

    .nav-menu {
        width: 80%;
        top: 54px;
        height: calc(100vh - 54px);
    }

    .nav-menu a {
        font-size: 0.8rem;
        padding: 16px 20px;
    }

    .decoration {
        font-size: 6rem;
    }

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

    .error-code {
        font-size: 3rem;
    }
}

/* Landscape mobile optimization */
@media (max-width: 768px) and (orientation: landscape) {
    .header h1 {
        font-size: 2rem;
    }

    .header {
        margin-bottom: 30px;
        padding-bottom: 15px;
    }

    .actions {
        gap: 20px;
    }

    .action-item {
        padding: 20px 0;
    }

    .content-section {
        margin-bottom: 30px;
    }

    .modal-container {
        max-height: 90vh;
    }

    .audio-player-full {
        padding: 15px;
    }

    #visualizer {
        height: 120px;
    }
}