* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
    background: #0f0f0f;
    color: #fff;
    min-height: 100vh;
    transition: background 0.3s, color 0.3s;
}

/* Editor Page */
.editor-page {
    display: flex;
    height: 100vh;
    width: 100vw;
}

.container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

.sidebar-nav {
    width: 64px;
    background: #161616;
    border-right: 1px solid #252525;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 0;
    flex-shrink: 0;
    z-index: 10;
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    overflow: hidden;
}

.nav-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.nav-divider {
    width: 32px;
    height: 1px;
    background: #252525;
    margin-bottom: 12px;
}

.nav-item {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 4px;
    position: relative;
    color: #666;
}

.nav-item:hover {
    background: #1e1e1e;
    color: #999;
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    color: #a5b4fc;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: linear-gradient(180deg, #667eea, #764ba2);
    border-radius: 0 3px 3px 0;
}

.nav-item svg {
    width: 22px;
    height: 22px;
    stroke-width: 1.8;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-tooltip {
    position: absolute;
    left: 56px;
    background: #1e1e1e;
    border: 1px solid #333;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 100;
}

.nav-item:hover .nav-tooltip {
    opacity: 1;
}

.nav-bottom {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.config-panel {
    width: 340px;
    background: #1a1a1a;
    border-left: 1px solid #252525;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transform: translateX(0);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 5;
    overflow: hidden;
}

.config-panel.collapsed {
    width: 0;
    border-left: none;
}

.config-panel-header {
    padding: 20px 20px 12px;
    border-bottom: 1px solid #252525;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 340px;
}

.config-panel-title {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
}

.config-panel-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: #252525;
    color: #888;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.config-panel-close:hover {
    background: #333;
    color: #fff;
}

.config-panel-close svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.config-panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    scrollbar-width: thin;
    scrollbar-color: #333 transparent;
    min-width: 340px;
}

.config-panel-content::-webkit-scrollbar {
    width: 5px;
}

.config-panel-content::-webkit-scrollbar-track {
    background: transparent;
}

.config-panel-content::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 3px;
}

.config-panel-content::-webkit-scrollbar-thumb:hover {
    background: #444;
}

.preview-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: #0a0a0a;
    position: relative;
    transition: margin-right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 0;
}

.canvas-wrapper {
    position: relative;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.9);
    border-radius: 16px;
    overflow: visible;
    transition: transform 0.3s;
}

.canvas-wrapper:hover {
    transform: scale(1.01);
}

#coverCanvas {
    display: block;
    border-radius: 16px;
    cursor: crosshair;
}

.size-info {
    margin-top: 16px;
    font-size: 12px;
    color: #444;
    font-family: monospace;
}

.drag-hint {
    margin-top: 10px;
    font-size: 12px;
    color: #333;
    margin-bottom: 80px;
}

.bottom-bar {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: #161616;
    border: 1px solid #2a2a2a;
    border-radius: 14px;
    padding: 8px;
    z-index: 20;
}

.bottom-btn {
    padding: 10px 18px;
    border: none;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.bottom-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.bottom-btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.bottom-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.bottom-btn-secondary {
    background: #252525;
    color: #aaa;
}

.bottom-btn-secondary:hover {
    background: #333;
    color: #fff;
}

.form-group {
    margin-bottom: 16px;
}

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

label {
    display: block;
    font-size: 12px;
    color: #888;
    margin-bottom: 8px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    background: #242424;
    border: 1px solid #333;
    border-radius: 10px;
    color: #fff;
    font-size: 13px;
    outline: none;
    transition: all 0.2s;
    font-family: inherit;
}

textarea {
    min-height: 100px;
    resize: vertical;
    font-family: monospace;
    font-size: 11px;
    line-height: 1.5;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    border-color: #667eea;
    background: #2a2a2a;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: #333;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #1a1a1a;
    transition: transform 0.15s, box-shadow 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.3);
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid #1a1a1a;
}

.range-value {
    text-align: right;
    font-size: 11px;
    color: #667eea;
    margin-top: 4px;
    font-weight: 600;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #242424;
    border: 1px solid #333;
    border-radius: 10px;
    padding: 6px 10px;
    transition: all 0.2s;
    cursor: pointer;
}

.color-picker-wrapper:hover {
    border-color: #444;
}

.color-picker-wrapper:focus-within {
    border-color: #667eea;
    background: #2a2a2a;
}

.color-preview-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid #444;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.color-preview-circle:hover {
    transform: scale(1.1);
}

.color-value-text {
    font-family: monospace;
    font-size: 12px;
    color: #888;
    flex: 1;
    text-transform: uppercase;
}

input[type="color"] {
    width: 0;
    height: 0;
    padding: 0;
    border: none;
    visibility: hidden;
    position: absolute;
}

.card {
    background: #242424;
    border-radius: 14px;
    padding: 16px;
    border: 1px solid #2a2a2a;
    margin-bottom: 12px;
}

.card-title {
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title .icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.card-title .icon svg {
    width: 100%;
    height: 100%;
    stroke: #a5b4fc;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #333;
    color: #fff;
}

.btn-secondary:hover {
    background: #444;
}

.btn-success {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
    color: #0a0a0a;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(67, 233, 123, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
    color: #fff;
}

.btn-small {
    padding: 6px 12px;
    font-size: 11px;
    border-radius: 8px;
    width: auto;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.platform-item {
    padding: 12px 8px;
    background: #1a1a1a;
    border: 2px solid #333;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
    user-select: none;
}

.platform-item:hover {
    border-color: #667eea;
    transform: translateY(-2px);
}

.platform-item.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border-color: #667eea;
    color: #a5b4fc;
}

.platform-item .ratio {
    font-size: 10px;
    color: #555;
    margin-top: 4px;
}

.platform-item.active .ratio {
    color: #818cf8;
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.preset-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 6px;
    background: #1a1a1a;
    border: 2px solid #333;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 11px;
    color: #888;
}

.preset-item:hover {
    border-color: #667eea;
    transform: translateY(-2px);
}

.preset-preview {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid #333;
}

.color-preview-bar {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    padding: 10px;
    background: #1a1a1a;
    border-radius: 12px;
    border: 1px solid #2a2a2a;
    position: relative;
    flex-wrap: wrap;
}

.color-bar {
    flex: 1;
    height: 48px;
    border-radius: 10px;
    border: 2px solid transparent;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    overflow: visible;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    min-width: 60px;
}

.color-bar:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.color-bar::after {
    content: attr(data-color);
    position: absolute;
    bottom: 4px;
    right: 8px;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.8);
    font-family: monospace;
    text-transform: uppercase;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.color-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.15), transparent);
    border-radius: 10px 10px 0 0;
}

.svg-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.svg-item {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 12px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.svg-box-preview {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.svg-box-preview img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.svg-info {
    flex: 1;
    font-size: 11px;
    color: #888;
    line-height: 1.6;
}

.svg-actions {
    display: flex;
    gap: 6px;
}

.hint-text {
    font-size: 12px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 12px;
    padding: 12px;
    background: #1a1a1a;
    border-radius: 10px;
    border: 1px dashed #333;
}

.hint-text a {
    color: #667eea;
    text-decoration: none;
}

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

.empty-state {
    text-align: center;
    padding: 30px 20px;
    color: #444;
    font-size: 13px;
}

.pos-display {
    font-size: 11px;
    color: #555;
    font-family: monospace;
    margin-top: 4px;
    padding: 6px 10px;
    background: #1a1a1a;
    border-radius: 8px;
    display: inline-block;
}

.config-area {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.config-area .btn {
    flex: 1;
    font-size: 12px;
    padding: 8px;
}

#importFileInput {
    display: none;
}

.upload-area {
    border: 2px dashed #333;
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 12px;
}

.upload-area:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.05);
}

.upload-area svg {
    width: 32px;
    height: 32px;
    stroke: #555;
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    margin-bottom: 8px;
}

.upload-area p {
    font-size: 12px;
    color: #666;
}

.upload-area .upload-hint {
    font-size: 11px;
    color: #444;
    margin-top: 4px;
}

.bg-image-preview {
    width: 100%;
    height: 120px;
    border-radius: 10px;
    object-fit: cover;
    border: 2px solid #333;
    margin-bottom: 12px;
}

.bg-image-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.bg-image-actions .btn {
    flex: 1;
    font-size: 12px;
    padding: 8px;
}

.loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 14px;
}

.loading.show {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #333;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.toast-container {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: #1e1e1e;
    border: 1px solid #333;
    border-radius: 16px;
    padding: 14px 18px;
    min-width: 280px;
    max-width: 360px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: toastSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
    position: relative;
    overflow: hidden;
}

.toast.toast-exit {
    animation: toastSlideOut 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    border-radius: 3px 0 0 3px;
}

.toast.toast-success::before {
    background: linear-gradient(180deg, #43e97b, #38f9d7);
}

.toast.toast-error::before {
    background: linear-gradient(180deg, #ff6b6b, #ee5a6f);
}

.toast.toast-info::before {
    background: linear-gradient(180deg, #667eea, #764ba2);
}

.toast.toast-warning::before {
    background: linear-gradient(180deg, #f59e0b, #f97316);
}

.toast-icon {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    background: rgba(67, 233, 123, 0.15);
}

.toast-error .toast-icon {
    background: rgba(255, 107, 107, 0.15);
}

.toast-info .toast-icon {
    background: rgba(102, 126, 234, 0.15);
}

.toast-warning .toast-icon {
    background: rgba(245, 158, 11, 0.15);
}

.toast-icon svg {
    width: 16px;
    height: 16px;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.toast-success .toast-icon svg {
    stroke: #43e97b;
}

.toast-error .toast-icon svg {
    stroke: #ff6b6b;
}

.toast-info .toast-icon svg {
    stroke: #667eea;
}

.toast-warning .toast-icon svg {
    stroke: #f59e0b;
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 2px;
}

.toast-message {
    font-size: 12px;
    color: #888;
    line-height: 1.5;
}

.toast-close {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: #555;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    flex-shrink: 0;
    transition: all 0.2s;
}

.toast-close:hover {
    background: #333;
    color: #fff;
}

.toast-close svg {
    width: 12px;
    height: 12px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(-30px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes toastSlideOut {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
    }

    to {
        opacity: 0;
        transform: translateX(-30px) scale(0.95);
    }
}

.confirm-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 2500;
    align-items: center;
    justify-content: center;
}

.confirm-overlay.show {
    display: flex;
}

.confirm-dialog {
    background: #1e1e1e;
    border: 1px solid #333;
    border-radius: 20px;
    padding: 24px;
    width: 340px;
    max-width: 90vw;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: confirmPopIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes confirmPopIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(10px);
    }

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

.confirm-dialog .confirm-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(245, 158, 11, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.confirm-dialog .confirm-icon svg {
    width: 24px;
    height: 24px;
    stroke: #f59e0b;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.confirm-dialog .confirm-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.confirm-dialog .confirm-message {
    font-size: 13px;
    color: #888;
    line-height: 1.6;
    margin-bottom: 20px;
}

.confirm-dialog .confirm-actions {
    display: flex;
    gap: 10px;
}

.confirm-dialog .confirm-actions .btn {
    flex: 1;
    padding: 10px;
    font-size: 13px;
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 20px;
    padding: 0;
    width: 400px;
    max-width: 90vw;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.modal-overlay.show .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: 24px 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.modal-close-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: #252525;
    color: #888;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close-btn:hover {
    background: #333;
    color: #fff;
}

.modal-close-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.modal-body {
    padding: 20px 24px;
}

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

.modal-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: #242424;
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-option:hover {
    border-color: #667eea;
    background: #2a2a2a;
}

.modal-option.selected {
    border-color: #667eea;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
}

.modal-option input[type="radio"] {
    accent-color: #667eea;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.modal-option-label {
    flex: 1;
    cursor: pointer;
}

.modal-option-label .label-title {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    display: block;
    margin-bottom: 2px;
}

.modal-option-label .label-desc {
    font-size: 12px;
    color: #666;
}

.modal-option-label .file-size {
    font-size: 11px;
    color: #4a90d9;
    margin-top: 4px;
    display: block;
    font-weight: 500;
}

.modal-quality-section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #2a2a2a;
}

.modal-footer {
    padding: 16px 24px 24px;
    display: flex;
    gap: 10px;
}

.modal-footer .btn {
    flex: 1;
}

.font-select-list {
    max-height: 300px;
    overflow-y: auto;
    border-radius: 10px;
    border: 1px solid #333;
    background: #242424;
}

.font-select-list::-webkit-scrollbar {
    width: 5px;
}

.font-select-list::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 3px;
}

.font-option {
    padding: 12px 14px;
    cursor: pointer;
    transition: all 0.15s;
    border-bottom: 1px solid #2a2a2a;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.font-option:last-child {
    border-bottom: none;
}

.font-option:hover {
    background: #2a2a2a;
}

.font-option.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    color: #a5b4fc;
}

.font-option .font-preview {
    font-size: 18px;
    width: 30px;
    text-align: center;
}

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

.font-option .font-name {
    font-size: 13px;
    font-weight: 500;
}

.font-option .font-desc {
    font-size: 11px;
    color: #666;
    margin-top: 2px;
}

.font-select {
    width: 100%;
    padding: 8px 12px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 13px;
    cursor: pointer;
    outline: none;
    transition: all 0.2s;
}

.font-select:hover {
    border-color: #555;
}

.font-select:focus {
    border-color: #667eea;
}

.font-select option {
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 4px;
}

.lang-switcher {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(22, 22, 22, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid #2a2a2a;
    border-radius: 10px;
    padding: 6px 8px;
}

.lang-btn {
    padding: 4px 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #666;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.lang-btn:hover {
    color: #999;
}

.lang-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.custom-size-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.custom-size-row input {
    text-align: center;
}

.custom-text-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.custom-text-item {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 12px;
    padding: 12px;
}

.custom-text-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.custom-text-item-label {
    font-size: 12px;
    font-weight: 600;
    color: #aaa;
}

.custom-text-remove {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: none;
    background: #333;
    color: #888;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all 0.2s;
}

.custom-text-remove:hover {
    background: #ff6b6b;
    color: #fff;
}

.pattern-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 10px;
}

.pattern-item {
    height: 60px;
    border-radius: 10px;
    border: 2px solid #333;
    cursor: pointer;
    transition: all 0.2s;
    overflow: hidden;
    position: relative;
}

.pattern-item:hover {
    border-color: #667eea;
    transform: translateY(-2px);
}

.pattern-item.active {
    border-color: #667eea;
}

.pattern-item canvas {
    width: 100%;
    height: 100%;
}

.pattern-item-label {
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(0, 0, 0, 0.5);
    padding: 2px 0;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

       /* ===== Inline Color Picker ===== */
       .inline-color-picker {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 14px;
    padding: 16px;
    margin-top: 8px;
    animation: pickerSlideIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 100;
    width: 100%;
    box-sizing: border-box;
}

@keyframes pickerSlideIn {
    from { opacity: 0; transform: translateY(-8px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.picker-sb-area {
    width: 100%;
    height: 160px;
    border-radius: 10px;
    position: relative;
    cursor: crosshair;
    overflow: hidden;
    border: 1px solid #333;
    margin-bottom: 12px;
}

.picker-sb-cursor {
    position: absolute;
    width: 14px;
    height: 14px;
    border: 2px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 1px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.3);
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: none;
}

.picker-hue-track {
    width: 100%;
    height: 16px;
    border-radius: 8px;
    background: linear-gradient(to right,
        #ff0000 0%, #ffff00 17%, #00ff00 33%,
        #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
    position: relative;
    cursor: pointer;
    border: 1px solid #333;
    margin-bottom: 12px;
}

.picker-hue-thumb {
    position: absolute;
    top: -3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
    pointer-events: none;
    transform: translateX(-50%);
    transition: none;
}

.picker-preview-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.picker-preview {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 2px solid #333;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.picker-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(45deg, #333 25%, transparent 25%),
        linear-gradient(-45deg, #333 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #333 75%),
        linear-gradient(-45deg, transparent 75%, #333 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
    z-index: 0;
}

.picker-preview-fill {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.picker-close-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: #333;
    color: #888;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.picker-close-btn:hover {
    background: #444;
    color: #fff;
}

.picker-close-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        overflow: auto;
    }

    .sidebar-nav {
        width: 100%;
        flex-direction: row;
        justify-content: center;
        padding: 12px 0;
        border-right: none;
        border-bottom: 1px solid #252525;
        overflow-x: auto;
        overflow-y: visible;
        gap: 4px;
    }

    .sidebar-nav::-webkit-scrollbar {
        display: none;
    }

    .nav-logo {
        display: none;
    }

    .nav-divider {
        display: none;
    }

    .nav-bottom {
        margin-top: 0;
        flex-direction: row;
    }

    .nav-tooltip {
        left: 50%;
        top: calc(100% + 8px);
        transform: translateX(-50%);
        white-space: nowrap;
    }

    .preview-area {
        padding: 15px;
        min-height: 50vh;
    }

    .canvas-wrapper {
        max-width: 100%;
    }

    #coverCanvas {
        max-width: 100%;
        height: auto;
        border-radius: 12px;
    }

    .config-panel {
        width: 100%;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        height: 60vh;
        border-left: none;
        border-top: 1px solid #252525;
        transform: translateY(100%);
        z-index: 100;
    }

    .config-panel.collapsed {
        width: 100%;
        transform: translateY(0);
    }

    .config-panel-header,
    .config-panel-content {
        min-width: auto;
    }

    .bottom-bar {
        bottom: 70vh;
        padding: 6px;
    }

    .bottom-btn {
        padding: 8px 14px;
        font-size: 12px;
    }

    .sidebar-toggle {
        display: block !important;
    }
}

@media (max-width: 480px) {
    .sidebar-nav {
        padding: 8px 0;
    }

    .nav-item {
        width: 40px;
        height: 40px;
    }

    .nav-item svg {
        width: 18px;
        height: 18px;
    }

    .preview-area {
        padding: 10px;
    }

    .bottom-bar {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }

    .platform-grid,
    .preset-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.sidebar-toggle {
    display: none;
    position: fixed;
    bottom: 16px;
    right: 16px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    z-index: 200;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(102, 126, 234, 0.5);
}

.sidebar-toggle svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

/* ===== Action Feedback Animations ===== */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-4px);
    }
    75% {
        transform: translateX(4px);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes successCheck {
    0% {
        stroke-dashoffset: 24;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

.nav-item:active {
    animation: pulse 0.2s ease-out;
}

.btn:active {
    animation: pulse 0.15s ease-out;
}

.card {
    animation: fadeInUp 0.3s ease-out;
}

.card:nth-child(2) { animation-delay: 0.05s; }
.card:nth-child(3) { animation-delay: 0.1s; }
.card:nth-child(4) { animation-delay: 0.15s; }
.card:nth-child(5) { animation-delay: 0.2s; }

.toast {
    animation: fadeInUp 0.3s ease-out;
}

.toast.success .toast-icon svg {
    stroke-dasharray: 24;
    stroke-dashoffset: 24;
    animation: successCheck 0.4s ease-out 0.2s forwards;
}

.nav-item[disabled]:active {
    animation: none;
}

.preset-item:active {
    animation: scaleIn 0.15s ease-out;
}

.platform-item:active {
    animation: scaleIn 0.15s ease-out;
}

/* ===== SVG Style Options ===== */
.svg-style-section {
    margin-bottom: 12px;
}

.svg-style-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 8px;
    margin-top: 8px;
}

.svg-style-option {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    background: #1a1a1a;
    border: 2px solid #333;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
    color: #888;
}

.svg-style-option:hover {
    border-color: #667eea;
    color: #fff;
}

.svg-style-option input[type="radio"] {
    display: none;
}

.svg-style-option:has(input:checked) {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    border-color: #667eea;
    color: #a5b4fc;
}

.svg-effect-row {
    display: flex;
    gap: 12px;
    margin: 12px 0;
}

.svg-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
    color: #888;
}

.svg-toggle:hover {
    border-color: #444;
    color: #fff;
}

.svg-toggle input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #667eea;
    cursor: pointer;
}

.svg-toggle:has(input:checked) {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border-color: #667eea;
    color: #a5b4fc;
}

.svg-select {
    width: 100%;
    padding: 8px 12px;
    background: #242424;
    border: 1px solid #333;
    border-radius: 8px;
    color: #fff;
    font-size: 12px;
    cursor: pointer;
}

.svg-select:focus {
    border-color: #667eea;
    outline: none;
}

.svg-gradient-section,
.svg-solid-section,
.svg-border-section {
    margin-top: 12px;
}