/* ============================================================
   ROOT VARIABLES & RESET
   ============================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #007bff;
    --primary-dark: #0056b3;
    --success: #28a745;
    --danger: #bd2130;
    --bg-dark: #000000;
    --bg-card: #0d0d0d;
    --bg-app: #272727;
    --bg-item: #141414;
    --bg-hover: #1a1a1a;
    --border-color: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #c0c0c0;
    --text-muted: #666666;
    --text-light: #aaaaaa;
    --radius: 10px;
    --radius-sm: 6px;
    --transition: all 0.3s ease;
    --font-base: 14px;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    font-size: var(--font-base);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 920px;
    padding-bottom: 30px;
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 10px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-area h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.logo-area h1 span {
    color: var(--primary);
}

.logo-area .badge {
    background: var(--primary);
    color: #fff;
    font-size: 9px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.main-nav {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    align-items: center;
}

.main-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    background: var(--primary);
    color: #ffffff;
}

/* ===== TOMBOL BAHASA DI HEADER ===== */
.lang-toggle-btn {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.lang-toggle-btn:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 14px;
    padding: 4px 0;
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px 28px;
    margin-bottom: 20px;
}

.hero-section h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.hero-section p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 700px;
}

.hero-section .highlight {
    color: #4caf50;
    font-weight: 600;
}

/* ============================================================
   APP SECTION
   ============================================================ */
.app-section {
    background: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 24px;
}

.app-section .section-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* ============================================================
   PLAYLIST MANAGEMENT
   ============================================================ */
.playlist-management-row {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.select-box {
    flex: 2;
    min-width: 160px;
    position: relative;
}

.select-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--primary);
    font-size: 13px;
}

.select-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
}

select {
    flex: 1;
    padding: 10px 14px;
    background-color: var(--bg-item);
    color: #ffffff;
    border: 1px solid var(--primary);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    min-height: 42px;
}

.select-wrapper select {
    padding-right: 32px;
}

.btn-edit-playlist-name {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: none;
    flex-shrink: 0;
    line-height: 1;
    height: 42px;
    align-items: center;
    justify-content: center;
}

.btn-edit-playlist-name:hover {
    background-color: var(--primary);
    color: #ffffff;
}

.btn-edit-playlist-name.visible {
    display: flex;
}

.btn-add-playlist {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
    min-height: 42px;
    flex: 0.6;
}

.btn-add-playlist:hover {
    background-color: var(--primary-dark);
}

.btn-delete-playlist {
    background-color: #2c0d11;
    color: #ff4d4d;
    border: 1px solid #5a181e;
    padding: 10px 14px;
    font-size: 13px;
    border-radius: 8px;
    cursor: pointer;
    min-height: 42px;
    flex: 0.6;
    font-weight: 600;
    transition: var(--transition);
}

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

/* ============================================================
   UPLOAD BUTTON
   ============================================================ */
input[type="file"] {
    display: none;
}

.btn-upload {
    display: block;
    background-color: var(--primary);
    color: #ffffff;
    text-align: center;
    padding: 14px 18px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
    min-height: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.btn-upload:hover {
    background-color: var(--primary-dark);
}

.btn-upload:active {
    transform: scale(0.98);
}

.btn-upload .sub-text {
    font-size: 11px;
    opacity: 0.75;
    font-weight: 400;
    margin-top: 2px;
}

/* ============================================================
   STATUS & PLAYER
   ============================================================ */
#status {
    font-size: 13px;
    color: var(--primary);
    text-align: center;
    margin-top: 12px;
    margin-bottom: 14px;
    min-height: 20px;
    font-weight: 500;
}

#current-title {
    font-size: 15px;
    text-align: center;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

audio {
    width: 100%;
    margin-bottom: 14px;
    height: 40px;
}

/* ============================================================
   CONTROLS
   ============================================================ */
.controls-wrapper {
    margin-top: 6px;
    margin-bottom: 20px;
}

.controls-label {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.controls-row {
    display: flex;
    gap: 8px;
}

.btn-control {
    flex: 1;
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    min-height: 40px;
}

.btn-control:hover {
    background-color: var(--primary-dark);
}

/* ============================================================
   PLAYLIST CONTAINER - SCROLL 6 AUDIO
   ============================================================ */
.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 18px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

.playlist-header h3 {
    margin: 0;
    border: none;
    padding: 0;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}

.btn-move {
    background: var(--bg-item);
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 14px;
    cursor: pointer;
    flex: none;
    width: auto;
    display: inline-block;
    transition: var(--transition);
    min-height: 36px;
}

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

.btn-move:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-move:disabled:hover {
    background: var(--bg-item);
    color: var(--primary);
}

/* ===== TOMBOL TIMER ===== */
.btn-timer {
    background: var(--bg-item);
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 16px;
    cursor: pointer;
    flex: none;
    width: auto;
    display: inline-block;
    transition: var(--transition);
    min-height: 36px;
    line-height: 1;
}

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

.btn-timer.active {
    background-color: #28a745;
    border-color: #28a745;
    color: #ffffff;
    animation: pulse-timer 1.5s ease-in-out infinite;
}

@keyframes pulse-timer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ============================================================
   PLAYLIST ITEMS
   ============================================================ */
#playlist-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 350px;
    overflow-y: auto;
    padding-right: 4px;
    scroll-behavior: smooth;
    overflow-x: visible;
    padding-bottom: 10px;
}

#playlist-container::-webkit-scrollbar {
    width: 4px;
}

#playlist-container::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 4px;
}

#playlist-container::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

.empty-message {
    text-align: center;
    padding: 20px 0;
    color: var(--text-muted);
    font-size: 14px;
}

.empty-message .empty-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 6px;
}

.empty-message .empty-hint {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

.playlist-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background-color: var(--bg-item);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    gap: 8px;
    transition: var(--transition);
    overflow: visible;
    position: relative;
}

.playlist-item:hover {
    background-color: var(--bg-hover);
}

.playlist-item span.track-title-text {
    flex: 1;
    cursor: pointer;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-item.active-track span.track-title-text {
    color: var(--primary);
    font-weight: 600;
}

.track-selector {
    width: 20px;
    height: 20px;
    border: 2px solid #444;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    transition: var(--transition);
    flex-shrink: 0;
    font-size: 13px;
    color: transparent;
    user-select: none;
}

.track-selector.selected {
    background-color: var(--success);
    border-color: var(--success);
    color: #ffffff;
}

.track-selector.selected::after {
    content: "✓";
    color: #ffffff;
    font-weight: bold;
    font-size: 13px;
}

.track-selector:hover {
    border-color: var(--primary);
}

/* ============================================================
   KEBA MENU - FIXED
   ============================================================ */
.kebab-menu-wrapper {
    position: relative;
    display: inline-block;
    z-index: 9999;
}

.btn-kebab {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 4px 10px;
    font-size: 14px;
    border-radius: 4px;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

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

/* ===== DROPDOWN - MUNCUL KE ATAS (FIXED) ===== */
.kebab-dropdown {
    display: none;
    position: fixed;
    background-color: #1a1a1a;
    border: 1px solid var(--primary);
    border-radius: 6px;
    min-width: 150px;
    z-index: 999999;
    box-shadow: 0 4px 20px rgba(0,0,0,0.95);
    overflow: hidden;
    padding: 4px 0;
}

.kebab-dropdown.show {
    display: block;
}

.kebab-dropdown button {
    display: block;
    width: 100%;
    padding: 10px 16px;
    background: #222222;
    color: var(--text-secondary);
    border: none;
    border-bottom: 1px solid #2a2a2a;
    text-align: left;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.kebab-dropdown button:last-child {
    border-bottom: none;
}

.kebab-dropdown button:hover {
    background-color: var(--primary);
    color: #ffffff;
}

.kebab-dropdown button.danger:hover {
    background-color: var(--danger);
    color: #ffffff;
}

/* ============================================================
   NEXT BADGE
   ============================================================ */
.playlist-item.up-next {
    border-left: 3px solid var(--success);
}

.playlist-item.up-next .track-title-text {
    color: var(--success);
}

.next-badge {
    background-color: var(--success);
    color: #000;
    font-size: 10px;
    font-weight: bold;
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: 4px;
}

/* ============================================================
   LOOP INFO
   ============================================================ */
.loop-info {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 12px;
    text-align: center;
    padding: 10px 14px;
    background: var(--bg-item);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    line-height: 1.7;
}

.loop-info .highlight-green {
    color: var(--success);
    font-weight: 600;
}

.loop-info .visual-hint {
    display: inline-block;
    background: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 10px;
    margin: 0 2px;
    font-size: 11px;
}

.loop-info .visual-hint .check {
    color: var(--success);
    font-weight: bold;
}

.loop-info .visual-hint .empty {
    color: #444;
}

.loop-info .step-arrow {
    color: var(--text-muted);
    margin: 0 4px;
}

.loop-info .learn-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.loop-info .learn-more:hover {
    text-decoration: underline;
}

/* ============================================================
   PLAYLIST SELECT ITEM (MODAL)
   ============================================================ */
.playlist-select-item {
    padding: 12px;
    background-color: #222222;
    border: 1px solid #444;
    border-radius: 6px;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
}

.playlist-select-item:active {
    transform: scale(0.97);
}

.playlist-select-item.selected {
    background-color: #000000 !important;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: bold;
    transform: scale(0.97);
}

.playlist-select-item:hover {
    background-color: #2a2a2a;
}

/* ============================================================
   TRASH MODAL
   ============================================================ */
.trash-content-wrapper {
    position: relative;
    min-height: 60px;
}

.trash-content-wrapper .trash-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #666;
    font-size: 14px;
}

.trash-content-wrapper .trash-content-inner {
    transition: opacity 0.15s ease;
}

.trash-content-wrapper .trash-content-inner.fade-out {
    opacity: 0;
}

.trash-content-wrapper .trash-content-inner.fade-in {
    opacity: 1;
}

.btn-delete {
    background-color: #2c0d11;
    color: #ff4d4d;
    border: 1px solid #5a181e;
    padding: 6px 10px;
    font-size: 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ============================================================
   TIMER MODAL (SLEEP TIMER)
   ============================================================ */
.timer-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100000;
}

.timer-modal {
    background: #111;
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 24px 28px;
    width: 90%;
    max-width: 420px;
    font-family: sans-serif;
    color: white;
    position: relative;
}

.timer-modal .modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: transparent;
    border: none;
    color: #666;
    font-size: 22px;
    cursor: pointer;
    transition: var(--transition);
}

.timer-modal .modal-close:hover {
    color: #fff;
}

.timer-modal .modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.timer-modal .modal-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* ===== TIMER INPUTS ===== */
.timer-input-group {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.timer-input-group .input-box {
    flex: 1;
}

.timer-input-group .input-box label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.timer-input-group .input-box input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-item);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    outline: none;
    transition: var(--transition);
}

.timer-input-group .input-box input:focus {
    border-color: var(--primary);
}

.timer-input-group .input-box input[type="number"]::-webkit-inner-spin-button {
    opacity: 1;
}

/* ===== QUICK BUTTONS ===== */
.timer-quick {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
    justify-content: center;
}

.timer-quick .quick-btn {
    background: var(--bg-item);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.timer-quick .quick-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.timer-quick .quick-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ===== TIMER STATUS ===== */
.timer-status {
    text-align: center;
    padding: 10px;
    background: var(--bg-item);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.timer-status .timer-time {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.timer-status .timer-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.timer-status .timer-time.warning {
    color: #ffc107;
}

.timer-status .timer-time.danger {
    color: #ff4d4d;
    animation: blink-danger 1s ease-in-out infinite;
}

@keyframes blink-danger {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ===== TIMER ACTIONS ===== */
.timer-actions {
    display: flex;
    gap: 10px;
}

.timer-actions .btn-cancel-timer {
    flex: 1;
    background: #444;
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.timer-actions .btn-cancel-timer:hover {
    background: #555;
}

.timer-actions .btn-start-timer {
    flex: 1;
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.timer-actions .btn-start-timer:hover {
    background: var(--primary-dark);
}

.timer-actions .btn-start-timer:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.timer-actions .btn-stop-timer {
    flex: 1;
    background: var(--danger);
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.timer-actions .btn-stop-timer:hover {
    background: #a71d2a;
}

/* ============================================================
   LANGUAGE MODAL
   ============================================================ */
.lang-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100000;
}

.lang-modal {
    background: #111;
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 24px 28px;
    width: 90%;
    max-width: 400px;
    font-family: sans-serif;
    color: white;
    position: relative;
}

.lang-modal .modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: transparent;
    border: none;
    color: #666;
    font-size: 22px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-modal .modal-close:hover {
    color: #fff;
}

.lang-modal .modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.lang-modal .modal-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* ===== LANGUAGE OPTIONS ===== */
.lang-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    background: var(--bg-item);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-option:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.lang-option.active {
    border-color: var(--primary);
    background: rgba(0, 123, 255, 0.1);
}

.lang-option .flag {
    font-size: 28px;
    width: 40px;
    text-align: center;
}

.lang-option .info {
    flex: 1;
}

.lang-option .info .name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.lang-option .info .desc {
    font-size: 12px;
    color: var(--text-muted);
}

.lang-option .check {
    font-size: 20px;
    color: var(--success);
    opacity: 0;
    transition: var(--transition);
}

.lang-option.active .check {
    opacity: 1;
}

/* ============================================================
   LANGUAGE LOADING SCREEN
   ============================================================ */
.lang-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200000;
}

.lang-loading {
    text-align: center;
    color: white;
}

.lang-loading .spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.lang-loading .loading-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.lang-loading .loading-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.lang-loading .loading-bar {
    width: 200px;
    height: 4px;
    background: var(--border-color);
    border-radius: 4px;
    margin: 12px auto 0;
    overflow: hidden;
}

.lang-loading .loading-bar .fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    width: 0%;
    animation: loading-fill 3s ease-in-out forwards;
}

@keyframes loading-fill {
    0% { width: 0%; }
    30% { width: 25%; }
    60% { width: 60%; }
    85% { width: 85%; }
    100% { width: 100%; }
}

/* ============================================================
   CONTENT SECTION - SEO
   ============================================================ */
.content-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin-bottom: 24px;
}

.content-section h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.content-section h3 {
    font-size: 17px;
    color: #4caf50;
    margin-top: 20px;
    margin-bottom: 10px;
}

.content-section h4 {
    font-size: 15px;
    color: var(--text-secondary);
    margin-top: 16px;
    margin-bottom: 6px;
}

.content-section p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.content-section ul,
.content-section ol {
    color: var(--text-secondary);
    line-height: 1.9;
    padding-left: 22px;
    margin-bottom: 14px;
}

.content-section ul li,
.content-section ol li {
    margin-bottom: 2px;
    font-size: 14px;
}

.content-section ul li strong,
.content-section ol li strong {
    color: #ffffff;
}

.content-section .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 14px 0 18px;
}

.content-section .feature-item {
    background: var(--bg-item);
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    text-align: center;
}

.content-section .feature-item .icon {
    font-size: 24px;
    display: block;
    margin-bottom: 4px;
}

.content-section .feature-item .desc {
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 600;
}

.content-section .feature-item .label {
    font-size: 11px;
    color: var(--text-muted);
}

.content-section .btn-guide {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 1px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    margin: 1px 2px;
}

.content-section .btn-guide.danger {
    background: var(--danger);
}

.content-section .btn-guide.green {
    background: var(--success);
}

.content-section .btn-guide.dark {
    background: #444;
}

.content-section .keyboard-shortcut {
    display: inline-block;
    background: #222;
    border: 1px solid #444;
    border-radius: 4px;
    padding: 1px 10px;
    font-size: 11px;
    color: #aaa;
    font-family: monospace;
}

.content-section .tip-box {
    background: #0a1a0a;
    border: 1px solid #1a3a1a;
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    margin: 14px 0;
}

.content-section .tip-box strong {
    color: #4caf50;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 16px;
}

.footer-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 18px 20px;
}

.footer-card .card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-card p,
.footer-card li {
    font-size: 13px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.footer-card ul {
    list-style: none;
    padding-left: 0;
    margin: 4px 0;
}

.footer-card ul li {
    padding: 3px 0 3px 20px;
    position: relative;
    font-size: 13px;
}

.footer-card ul li::before {
    content: "▸";
    position: absolute;
    left: 2px;
    color: var(--primary);
    font-weight: bold;
}

.footer-card .contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    border-bottom: 1px solid #161616;
}

.footer-card .contact-item:last-child {
    border-bottom: none;
}

.footer-card .contact-item .icon {
    font-size: 17px;
    width: 28px;
    text-align: center;
}

.footer-card .contact-item .info {
    color: var(--text-secondary);
    font-size: 13px;
}

.footer-card .contact-item .info strong {
    color: var(--primary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 16px;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    margin-top: 4px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .main-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .logo-area { justify-content: center; }
    .main-nav { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; }
    .content-section .feature-grid { grid-template-columns: 1fr 1fr; }
    .playlist-management-row { flex-wrap: wrap; }
    .select-box { flex: 1 1 100%; min-width: unset; }
    .btn-add-playlist,
    .btn-delete-playlist { flex: 1; min-width: unset; }
    .hero-section { padding: 16px 18px; }
    .hero-section h2 { font-size: 19px; }
    .app-section { padding: 14px 16px; }
    .content-section { padding: 16px 18px; }
    #playlist-container { max-height: 280px; }
    .timer-modal { padding: 18px 16px; }
    .lang-modal { padding: 18px 16px; }
    #waveform { height: 80px; }
    .cut-marker { height: 30px; top: -10px; }
    .cut-marker::after { font-size: 10px; top: -14px; }
}

@media (max-width: 480px) {
    .content-section .feature-grid { grid-template-columns: 1fr; }
    .footer-card { padding: 14px 16px; }
    .container { padding: 0 2px; }
    .logo-area h1 { font-size: 17px; }
    .btn-upload { font-size: 14px; padding: 12px; min-height: 42px; }
    .btn-upload .sub-text { font-size: 10px; }
    select { font-size: 13px; padding: 8px 10px; min-height: 38px; }
    .btn-add-playlist,
    .btn-delete-playlist { font-size: 12px; padding: 8px 10px; min-height: 38px; }
    .btn-control { font-size: 12px; padding: 8px 10px; min-height: 36px; }
    .btn-move { font-size: 12px; padding: 4px 8px; min-height: 32px; }
    .btn-timer { font-size: 14px; padding: 4px 8px; min-height: 32px; }
    .hero-section h2 { font-size: 17px; }
    .hero-section p { font-size: 13px; }
    .content-section h2 { font-size: 18px; }
    .content-section p,
    .content-section ul li,
    .content-section ol li { font-size: 13px; }
    #playlist-container { max-height: 220px; }
    .playlist-item { padding: 6px 8px; font-size: 13px; }
    .playlist-item span.track-title-text { font-size: 13px; }
    .timer-modal .modal-title { font-size: 17px; }
    .timer-input-group { flex-direction: column; gap: 10px; }
    .timer-quick .quick-btn { font-size: 12px; padding: 5px 10px; }
    .timer-status .timer-time { font-size: 22px; }
    .lang-modal .modal-title { font-size: 17px; }
    .lang-option { padding: 10px 12px; }
    .lang-option .flag { font-size: 22px; width: 32px; }
    .lang-option .info .name { font-size: 14px; }
    .lang-option .info .desc { font-size: 11px; }
}