:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --radius: 12px;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
}

.app-container {
    max-width: 800px;
    margin: 60px auto;
    padding: 0 20px;
}

.app-header {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeInDown 0.6s ease-out;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.header-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    border-radius: 20px;
    margin-bottom: 16px;
    color: #a855f7;
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.app-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #a5b4fc, #d8b4fe);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0 0 10px 0;
    letter-spacing: -0.02em;
}

.app-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:active {
    transform: scale(0.97);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background-color: var(--surface-hover);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

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

.btn-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.btn-danger:hover {
    color: var(--danger-hover);
    background-color: rgba(239, 68, 68, 0.2);
}

.actions-bar {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 24px;
}

.menu-list-container {
    background-color: var(--surface-color);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu-item {
    display: flex;
    flex-direction: column;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--surface-color);
    transition: background-color 0.2s;
}

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

.menu-item:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.menu-item.sortable-ghost {
    opacity: 0.4;
    background-color: var(--surface-hover);
}

.menu-item-content-wrapper {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 12px;
}

.menu-item-left {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.drag-handle {
    cursor: grab;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    padding: 8px;
    margin-left: -8px;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
}

.drag-handle:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

.drag-handle:active {
    cursor: grabbing;
}

.menu-item-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.menu-item-title {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-main);
}

.menu-item-url {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.menu-item-url a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
    word-break: break-all;
}

.menu-item-url a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.target-badge {
    font-size: 0.7rem;
    background: var(--surface-hover);
    padding: 2px 6px;
    border-radius: 4px;
    color: #cbd5e1;
    border: 1px solid var(--border-color);
    white-space: nowrap;
}

.menu-item-actions-row {
    display: flex;
    gap: 10px;
    padding-left: 40px; /* Align with text, after drag handle */
}

.icon-btn {
    background: var(--surface-hover);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
}

.icon-btn span {
    display: inline-block;
}

.icon-btn:hover {
    background: var(--border-color);
    color: var(--text-main);
    border-color: #475569;
}

.icon-btn.delete-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border-color: rgba(239, 68, 68, 0.2);
}

.empty-state {
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.empty-icon {
    width: 64px;
    height: 64px;
    background: var(--surface-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    opacity: 0.7;
}

.embed-section {
    margin-top: 40px;
    background-color: var(--surface-color);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.embed-section h2 {
    margin-top: 0;
    font-size: 1.35rem;
    margin-bottom: 8px;
}

.embed-section p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.code-block {
    position: relative;
    background-color: #0d1117;
    padding: 24px;
    border-radius: 8px;
    font-family: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.9rem;
    color: #e6edf3;
    overflow-x: auto;
    border: 1px solid #30363d;
}

.code-block code {
    white-space: pre-wrap;
    line-height: 1.5;
}

.code-block span {
    color: #79c0ff;
}

.code-block .btn {
    position: absolute;
    top: 16px;
    right: 16px;
    opacity: 0.8;
}

.code-block .btn:hover {
    opacity: 1;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--surface-color);
    border-radius: 16px;
    width: 100%;
    max-width: 450px;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    transform: scale(0.95);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal.active .modal-content {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.close-btn {
    background: var(--surface-hover);
    border: none;
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
}

.close-btn:hover {
    background: var(--border-color);
    color: var(--text-main);
}

.modal-body {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px 14px;
    background-color: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    box-sizing: border-box;
    transition: all 0.2s;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background-color: rgba(15, 23, 42, 0.3);
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
}

/* Toast Notification */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 14px 20px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    animation: slideInRight 0.3s ease-out;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast.success .toast-icon {
    color: var(--success-color);
}

.toast.error .toast-icon {
    color: var(--danger-color);
}

.toast.fadeOut {
    animation: fadeOutRight 0.3s ease-in forwards;
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}