/* ============================================
   Panel Framework Styles
   ============================================ */

/* ----- Overlay Backdrop ----- */
.panel-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    z-index: 1000;
    transition: background 0.3s ease;
    pointer-events: none;
}

.panel-overlay-visible {
    background: rgba(0, 0, 0, 0.5);
    pointer-events: auto;
}

/* ----- Sidebar Panel ----- */
.panel-sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 360px;
    background: #1e1e3a;
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.3);
    z-index: 1001;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    max-width: 90vw;
}

.panel-sidebar-right {
    right: 0;
    transform: translateX(100%);
}

.panel-sidebar-left {
    left: 0;
    transform: translateX(-100%);
}

.panel-sidebar-visible {
    transform: translateX(0);
}

/* Panel Header */
.panel-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.panel-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: #eee;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.panel-close {
    background: none;
    border: none;
    color: #888;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
    flex-shrink: 0;
    margin-left: 12px;
}

.panel-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #eee;
}

.panel-close:active {
    background: rgba(255, 255, 255, 0.15);
}

/* Panel Content */
.panel-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 20px;
}

/* Panel Content Scrollbar Styling */
.panel-content::-webkit-scrollbar {
    width: 8px;
}

.panel-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.panel-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.panel-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ----- Modal Dialog ----- */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    pointer-events: none;
}

.modal-backdrop-visible {
    background: rgba(0, 0, 0, 0.7);
    pointer-events: auto;
}

.modal-container {
    background: #1e1e3a;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    width: 600px;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: scale(0.95) translateY(-20px);
}

.modal-container-visible {
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* Modal Header */
.modal-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-title {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: #eee;
}

.modal-close {
    background: none;
    border: none;
    color: #888;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
    flex-shrink: 0;
    margin-left: 12px;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #eee;
}

/* Modal Content */
.modal-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
    min-height: 0;
}

/* Modal Footer */
.modal-footer {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-btn {
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background 0.2s, transform 0.1s;
}

.modal-btn:active {
    transform: translateY(1px);
}

.modal-btn-cancel {
    background: rgba(255, 255, 255, 0.1);
    color: #ccc;
}

.modal-btn-cancel:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #eee;
}

.modal-btn-confirm {
    background: #4fc3f7;
    color: #1a1a2e;
}

.modal-btn-confirm:hover {
    background: #29b6f6;
}

/* ----- Toast Notifications ----- */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background: #2a2a4a;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 12px 16px;
    min-width: 280px;
    max-width: 400px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: auto;
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(20px);
}

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

.toast-dismissed {
    opacity: 0;
    transform: translateX(100%);
}

.toast-icon {
    font-size: 18px;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
}

.toast-message {
    flex: 1;
    font-size: 14px;
    color: #eee;
    line-height: 1.4;
}

.toast-dismiss {
    background: none;
    border: none;
    color: #888;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.2s, color 0.2s;
    flex-shrink: 0;
}

.toast-dismiss:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #eee;
}

/* Toast Type Variants */
.toast-success {
    border-color: rgba(102, 187, 106, 0.4);
    background: linear-gradient(135deg, rgba(102, 187, 106, 0.2), rgba(76, 175, 80, 0.1));
}

.toast-success .toast-icon {
    color: #66bb6a;
}

.toast-info {
    border-color: rgba(79, 195, 247, 0.4);
    background: linear-gradient(135deg, rgba(79, 195, 247, 0.2), rgba(66, 165, 245, 0.1));
}

.toast-info .toast-icon {
    color: #4fc3f7;
}

.toast-warning {
    border-color: rgba(255, 167, 38, 0.4);
    background: linear-gradient(135deg, rgba(255, 167, 38, 0.2), rgba(255, 152, 0, 0.1));
}

.toast-warning .toast-icon {
    color: #ffa726;
}

.toast-error {
    border-color: rgba(239, 83, 80, 0.4);
    background: linear-gradient(135deg, rgba(239, 83, 80, 0.2), rgba(244, 67, 54, 0.1));
}

.toast-error .toast-icon {
    color: #ef5350;
}

/* ----- Mode Toggle Bar ----- */
.mode-toggle-bar {
    position: fixed;
    top: 40px;
    left: 0;
    right: 0;
    height: 44px;
    background: rgba(0, 0, 0, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0 16px;
    z-index: 90;
}

.mode-toggle-btn {
    background: transparent;
    border: none;
    color: #888;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    position: relative;
}

.mode-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ccc;
}

.mode-toggle-btn.active {
    background: rgba(79, 195, 247, 0.15);
    color: #4fc3f7;
}

.mode-toggle-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: #4fc3f7;
    border-radius: 1px 1px 0 0;
}

/* ----- Panel Content Common Styles ----- */

/* Form Groups */
.panel-form-group {
    margin-bottom: 16px;
}

.panel-form-group label {
    display: block;
    font-size: 13px;
    color: #aaa;
    margin-bottom: 6px;
    font-weight: 500;
}

.panel-form-group input[type="text"],
.panel-form-group input[type="number"],
.panel-form-group input[type="password"],
.panel-form-group input[type="email"],
.panel-form-group input[type="url"],
.panel-form-group select,
.panel-form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    color: #eee;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.panel-form-group input:focus,
.panel-form-group select:focus,
.panel-form-group textarea:focus {
    outline: none;
    border-color: #4fc3f7;
    box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.15);
}

.panel-form-group input::placeholder,
.panel-form-group textarea::placeholder {
    color: #555;
}

.panel-form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

/* Range Slider */
.panel-form-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    margin: 10px 0;
}

.panel-form-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: #4fc3f7;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

.panel-form-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.panel-form-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: #4fc3f7;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.panel-form-range-value {
    font-size: 13px;
    color: #4fc3f7;
    font-weight: 500;
    text-align: right;
    margin-top: -8px;
    margin-bottom: 8px;
}

/* Checkbox */
.panel-form-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 6px 0;
}

.panel-form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #4fc3f7;
    cursor: pointer;
    flex-shrink: 0;
}

.panel-form-checkbox label {
    margin: 0;
    cursor: pointer;
    flex: 1;
}

/* Section Headers */
.panel-section {
    margin-bottom: 20px;
}

.panel-section-header {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #888;
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Buttons */
.panel-btn {
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.panel-btn:active {
    transform: translateY(1px);
}

.panel-btn-primary {
    background: #4fc3f7;
    color: #1a1a2e;
}

.panel-btn-primary:hover {
    background: #29b6f6;
}

.panel-btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #ccc;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.panel-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #eee;
}

.panel-btn-danger {
    background: rgba(244, 67, 54, 0.2);
    color: #ef5350;
    border: 1px solid rgba(244, 67, 54, 0.3);
}

.panel-btn-danger:hover {
    background: rgba(244, 67, 54, 0.3);
}

.panel-btn-full {
    width: 100%;
}

.panel-btn-group {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

/* Info Cards */
.panel-info-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 12px;
}

.panel-info-card-title {
    font-size: 13px;
    font-weight: 600;
    color: #eee;
    margin-bottom: 4px;
}

.panel-info-card-value {
    font-size: 20px;
    font-weight: 600;
    color: #4fc3f7;
}

.panel-info-card-subtitle {
    font-size: 11px;
    color: #888;
    margin-top: 4px;
}

/* Divider */
.panel-divider {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: 20px 0;
}

/* Loading State */
.panel-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: #888;
}

.panel-loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(79, 195, 247, 0.2);
    border-top-color: #4fc3f7;
    border-radius: 50%;
    animation: panel-spin 0.8s linear infinite;
    margin-right: 12px;
}

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

/* Empty State */
.panel-empty {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.panel-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.panel-empty-text {
    font-size: 14px;
}

/* Responsive */
@media (max-width: 600px) {
    .panel-sidebar {
        width: 100%;
        max-width: 100%;
    }

    .modal-container {
        width: 100vw;
        height: 100vh;
        max-width: 100vw;
        max-height: 100vh;
        border-radius: 0;
    }

    #toast-container {
        left: 10px;
        right: 10px;
        bottom: 10px;
    }

    .toast {
        min-width: 0;
        width: 100%;
    }

    .mode-toggle-bar {
        overflow-x: auto;
        justify-content: flex-start;
    }

    .mode-toggle-btn {
        padding: 8px 12px;
        white-space: nowrap;
    }
}