:root {
    --primary-color: #ffffff;
    --secondary-color: #f8f9fa;
    --accent-color: #4dabf7;
    --accent-light: #e7f5ff;
    --text-color: #343a40;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --success-color: #20c997;
    --error-color: #fa5252;
    --card-bg: #ffffff;
    --input-bg: #f8f9fa;
    --shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
    --btn-hover: #339af0;
    --danger-color: #fa5252;
    --danger-hover: #e03131;
    --overlay-bg: rgba(0, 0, 0, 0.8);
}

body {
    background-color: #f1f3f5;
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    margin: 0;
    padding: 0;
}

.container {
    padding: 0 15px;
    max-width: 100%;
}

/* Password Overlay - Cải tiến */
.password-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.password-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    width: 90%;
    max-width: 400px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 100000;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

.password-header {
    background-color: var(--accent-color);
    color: white;
    padding: 15px;
    font-weight: 600;
    font-size: 18px;
    display: flex;
    align-items: center;
}

    .password-header i {
        margin-right: 10px;
    }

.password-body {
    padding: 20px;
}

.password-error {
    color: var(--danger-color);
    background-color: #fff5f5;
    padding: 10px;
    border-radius: 4px;
    font-size: 14px;
    display: flex;
    align-items: center;
}

    .password-error i {
        margin-right: 8px;
    }

/* Thêm hiệu ứng rung khi mật khẩu sai */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }

    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }

    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.6s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

/* Card Styles */
.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.card-header {
    background-color: var(--secondary-color);
    color: var(--text-color);
    padding: 12px 15px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

    .card-header i {
        margin-right: 8px;
        color: var(--accent-color);
    }

.card-body {
    padding: 15px;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 15px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
    font-size: 14px;
}

    .btn i {
        margin-right: 8px;
    }

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

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

.btn-reload {
    background-color: #e9ecef;
    color: var(--text-color);
}

    .btn-reload:hover {
        background-color: #dee2e6;
    }

.btn-settings {
    background-color: var(--accent-color);
    color: white;
}

    .btn-settings:hover {
        background-color: var(--btn-hover);
    }

.btn-action {
    background-color: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 13px;
    padding: 8px 10px;
    box-shadow: var(--shadow);
}

    .btn-action:hover {
        background-color: var(--accent-light);
        color: var(--accent-color);
    }

.btn-danger-custom {
    background-color: #fff5f5;
    color: var(--danger-color);
    border-color: #ffe3e3;
}

    .btn-danger-custom:hover {
        background-color: #ffe3e3;
        color: var(--danger-hover);
    }

.btn-video {
    background-color: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    text-align: left;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    box-shadow: var(--shadow);
}

    .btn-video:hover {
        background-color: var(--accent-light);
    }

    .btn-video i {
        color: var(--accent-color);
        margin-right: 8px;
    }

/* Nút video mới */
.video-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-video-action {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 15px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

    .btn-video-action:hover {
        background-color: var(--btn-hover);
        color: white;
        text-decoration: none;
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .btn-video-action i {
        margin-right: 8px;
        font-size: 16px;
    }

.btn-copy {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-left: none;
    padding: 8px 12px;
}

    .btn-copy:hover {
        background-color: var(--accent-light);
        color: var(--accent-color);
    }

.btn-accent {
    background-color: var(--accent-color);
    color: white;
}

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

.btn-secondary {
    background-color: #e9ecef;
    color: var(--text-color);
}

    .btn-secondary:hover {
        background-color: #dee2e6;
    }

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-outline-secondary {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

    .btn-outline-secondary:hover {
        background-color: var(--secondary-color);
    }

/* Form Controls */
.form-control {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 6px;
    width: 100%;
    font-size: 14px;
}

.input-group {
    display: flex;
    margin-bottom: 10px;
    box-shadow: var(--shadow);
}

    .input-group .form-control {
        border-radius: 0 6px 6px 0;
        border-left: none;
    }

.input-group-text {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 12px;
    border-radius: 6px 0 0 6px;
    display: flex;
    align-items: center;
}

.textarea-custom {
    min-height: 120px;
    resize: vertical;
}

label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: var(--text-muted);
}

.form-text {
    font-size: 12px;
    color: var(--text-muted);
}

/* Action Buttons Row */
.action-buttons {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 5px;
    margin-bottom: 15px;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.video-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.video-column-header {
    font-weight: 600;
    text-align: center;
    padding: 5px;
    background-color: var(--accent-light);
    color: var(--accent-color);
    border-radius: 4px;
    margin-bottom: 8px;
}

/* Link and Video Lists */
.link-list,
.video-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.link-item,
.video-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background-color: var(--secondary-color);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.link-url,
.video-url {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
}

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

    .video-url i {
        color: var(--accent-color);
        margin-right: 8px;
    }

/* Settings Styles */
.settings-menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.settings-menu-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background-color: var(--secondary-color);
    border-radius: 6px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
}

    .settings-menu-item i {
        margin-right: 12px;
        color: var(--accent-color);
        font-size: 18px;
        width: 24px;
        text-align: center;
    }

    .settings-menu-item:hover {
        background-color: var(--accent-light);
    }

    .settings-menu-item.active {
        background-color: var(--accent-light);
        color: var(--accent-color);
        font-weight: 500;
    }

.settings-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.settings-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 15px 10px;
    background-color: var(--secondary-color);
    border-radius: 6px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
    text-align: center;
}

    .settings-action-btn i {
        font-size: 24px;
        margin-bottom: 8px;
        color: var(--accent-color);
    }

    .settings-action-btn:hover {
        background-color: var(--accent-light);
        color: var(--accent-color);
    }

.settings-group {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.settings-header {
    background-color: var(--secondary-color);
    padding: 10px 15px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
}

    .setting-item:last-child {
        border-bottom: none;
    }

/* Sub-setting style */
.sub-setting {
    background-color: var(--accent-light);
    padding-left: 30px;
}

    .sub-setting .setting-label i {
        color: var(--accent-color);
    }

.setting-label {
    display: flex;
    align-items: center;
}

    .setting-label i {
        margin-right: 10px;
        color: var(--accent-color);
        width: 20px;
        text-align: center;
    }

/* Sortable List */
.sortable-list {
    margin-top: 10px;
}

.sortable-item {
    display: flex;
    align-items: center;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 15px;
    margin-bottom: 8px;
    cursor: move;
}

.sortable-handle {
    margin-right: 15px;
    color: var(--text-muted);
    cursor: grab;
}

.sortable-content {
    flex: 1;
}

    .sortable-content i {
        margin-right: 10px;
        color: var(--accent-color);
    }

.ui-sortable-helper {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.ui-sortable-placeholder {
    visibility: visible !important;
    background-color: var(--accent-light);
    border: 1px dashed var(--accent-color);
    border-radius: 6px;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

    .switch input {
        opacity: 0;
        width: 0;
        height: 0;
    }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ced4da;
    transition: .4s;
}

    .slider:before {
        position: absolute;
        content: "";
        height: 16px;
        width: 16px;
        left: 4px;
        bottom: 4px;
        background-color: white;
        transition: .4s;
    }

input:checked + .slider {
    background-color: var(--accent-color);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 24px;
}

    .slider.round:before {
        border-radius: 50%;
    }

/* Alert Styles */
.alert-custom {
    padding: 12px 15px;
    border-radius: 6px;
    position: relative;
    display: flex;
    align-items: center;
}

.alert-success-custom {
    background-color: #d3f9d8;
    border-left: 4px solid var(--success-color);
    color: #0b7a4d;
}

.alert-danger-custom {
    background-color: #ffe3e3;
    border-left: 4px solid var(--danger-color);
    color: #c92a2a;
}

.alert-custom i {
    margin-right: 10px;
}

.alert-close {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
}

    .alert-close:hover {
        opacity: 1;
    }

/* Form Check */
.form-check {
    display: flex;
    align-items: center;
    margin-top: 8px;
}

.form-check-input {
    margin-right: 8px;
}

.form-check-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Utility Classes */
.mb-1 {
    margin-bottom: 5px;
}

.mb-2 {
    margin-bottom: 10px;
}

.mb-3 {
    margin-bottom: 15px;
}

.mt-3 {
    margin-top: 15px;
}

.mt-4 {
    margin-top: 20px;
}

.d-flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.align-items-center {
    align-items: center;
}

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

.w-100 {
    width: 100%;
}

/* Copy Feedback */
.copy-feedback {
    display: none;
    color: var(--success-color);
    font-size: 12px;
    margin-top: 3px;
}

/* Empty Message */
.empty-message {
    color: var(--text-muted);
    text-align: center;
    margin: 10px 0;
    font-size: 14px;
}

/* Alert */
.alert {
    background-color: #fff9db;
    border-left: 3px solid #fcc419;
    padding: 12px;
    color: #e67700;
    font-size: 14px;
    border-radius: 4px;
}

.alert-link {
    color: #e67700;
    text-decoration: underline;
}

/* Code Result */
.code-result {
    background-color: white;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.code-header {
    background-color: var(--accent-color);
    color: white;
    padding: 10px 15px;
    font-weight: 600;
    font-size: 14px;
}

.code-loading {
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(74, 171, 247, 0.2);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s linear infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.code-data {
    padding: 15px;
}

.success-message {
    color: var(--success-color);
    margin-bottom: 10px;
    font-weight: 500;
    font-size: 14px;
}

.code-error {
    padding: 12px;
    background-color: #fff5f5;
    border-left: 3px solid var(--error-color);
    color: #e03131;
    margin: 15px;
    border-radius: 4px;
    font-size: 14px;
}

/* Video List */
#videoList {
    max-height: 300px;
    overflow-y: auto;
}

/* Modal Styling */
.modal-content {
    border-radius: 8px;
    border: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.modal-header {
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
}

.modal-footer {
    background-color: var(--secondary-color);
    border-top: 1px solid var(--border-color);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f3f5;
}

::-webkit-scrollbar-thumb {
    background: #ced4da;
    border-radius: 3px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--accent-color);
    }

/* Responsive adjustments */
@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .video-column-header {
        font-size: 13px;
        padding: 4px;
    }

    .btn-video {
        font-size: 13px;
        padding: 8px;
    }

    .link-item,
    .video-item {
        padding: 6px 10px;
        font-size: 13px;
    }

    .settings-actions {
        grid-template-columns: 1fr;
    }

    .password-container {
        width: 95%;
    }
}