/* تمام استایل‌ها دقیقاً مانند نسخه قبلی */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        :root {
            --bg: #f5f7fa;
            --text: #2c3e50;
            --box-bg: #ffffff;
            --box-border: #e4e4e4;
            --sidebar-settings-width: 300px;
            --sidebar-icons-width: 90px;
            --sidebar-gap: 15px;
            --sidebar-radius: 12px;
        }

        body.dark {
            --bg: #1f1f22;
            --text: #f1f1f1;
            --box-bg: #26272a;
            --box-border: #3a3a3c;
        }

        body {
            margin: 0;
            padding: 0;
            background: var(--bg);
            color: var(--text);
            font-family: 'IRAN Yekan', 'IranYekan', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            transition: background-color 0.3s, color 0.3s;
            background-image: radial-gradient(circle, rgba(44, 62, 80, 0.12) 1px, transparent 1px);
            background-size: 20px 20px;
        }

        body.dark {
            background-image: radial-gradient(circle, rgba(241, 241, 241, 0.08) 1px, transparent 1px);
        }

        .app-container {
            display: flex;
            min-height: 100vh;
            max-width: 100%;
            margin: 0 auto;
            position: relative;
        }

        .main-wrapper {
            flex: 1;
            margin-right: calc(var(--sidebar-settings-width) + var(--sidebar-icons-width) + var(--sidebar-gap) * 3);
            padding: 0 20px;
            width: 100%;
            min-width: 0;
        }

        .right-sidebar-settings {
            width: var(--sidebar-settings-width);
            background: var(--box-bg);
            border: 1px solid var(--box-border);
            border-radius: var(--sidebar-radius);
            position: fixed;
            right: calc(var(--sidebar-icons-width) + var(--sidebar-gap) * 2);
            top: var(--sidebar-gap);
            height: calc(100vh - var(--sidebar-gap) * 2);
            overflow-y: auto;
            z-index: 1000;
            display: flex;
            flex-direction: column;
        }

        .settings-header {
            padding: 20px 18px;
            border-bottom: 1px solid var(--box-border);
            text-align: center;
        }

        .settings-header h3 {
            margin: 0;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .settings-content {
            padding: 10px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .sidebar-download-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px;
            background: #10b981;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .sidebar-download-btn:hover {
            background: #059669;
            transform: scale(1.02);
        }

        .sidebar-download-btn svg {
            width: 16px;
            height: 16px;
            stroke: white;
        }

        .sidebar-reset-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 11px;
            background: transparent;
            color: var(--text);
            border: 1px solid var(--box-border);
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }

        .sidebar-reset-btn:hover {
            background: #ef4444;
            color: white;
            border-color: #ef4444;
        }

        .sidebar-reset-btn svg {
            width: 15px;
            height: 15px;
        }

        .right-sidebar-icons {
            width: var(--sidebar-icons-width);
            background: var(--box-bg);
            border: 1px solid var(--box-border);
            border-radius: var(--sidebar-radius);
            position: fixed;
            right: var(--sidebar-gap);
            top: var(--sidebar-gap);
            height: calc(100vh - var(--sidebar-gap) * 2);
            overflow-y: auto;
            z-index: 1000;
            display: flex;
            flex-direction: column;
        }

        .sidebar-icons-header {
            padding: 20px 0;
            text-align: center;
            border-bottom: 1px solid var(--box-border);
        }

        .sidebar-icons-nav {
            flex: 1;
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 12px 5px;
            color: var(--text);
            text-decoration: none;
            transition: all 0.3s;
            cursor: pointer;
            text-align: center;
            font-size: 10px;
            border-right: 3px solid transparent;
        }

        .icon-nav-item:hover {
            background: var(--bg);
            border-right-color: #4f46e5;
        }

        .icon-nav-item.active {
            background: var(--bg);
            border-right-color: #4f46e5;
        }

        .icon-nav-item svg {
            width: 24px;
            height: 24px;
            stroke: currentColor;
            fill: none;
        }

        header {
            background: var(--box-bg);
            border: 1px solid var(--box-border);
            padding: 15px;
            margin-top: 15px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s, border-color 0.3s;
            flex-wrap: wrap;
            gap: 10px;
        }

        .title {
            font-size: 20px;
            font-weight: bold;
            display: flex;
            align-items: baseline;
            gap: 12px;
            flex-wrap: wrap;
        }

        .title2 {
            font-size: 10px;
            background: #f4f5f6;
            border-radius: 15px;
            padding: 7px;
            text-align: center;
        }

        body.dark .title2 {
            background: #3a3a3c;
        }

        .header-right {
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .theme-buttons {
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: 8px;
        }

        .theme-buttons button,
        .header-random-btn {
            display: inline-flex;
            padding: 6px 10px;
            border-radius: 6px;
            border: 1px solid var(--box-border);
            background: var(--box-bg);
            color: var(--text);
            cursor: pointer;
            font-size: 12px;
            transition: all 0.3s;
            white-space: nowrap;
        }

        .theme-buttons button:hover,
        .header-random-btn:hover {
            background: #4f46e5;
            color: white;
        }

        .header-random-btn {
            background: #f59e0b;
            color: white;
            border-color: #f59e0b;
        }

        .header-random-btn:hover {
            background: #d97706;
            border-color: #d97706;
        }

        .converter-card {
            background: var(--box-bg);
            border: 1px solid var(--box-border);
            border-radius: 12px;
            padding: 24px;
            margin-top: 20px;
            margin-bottom: 20px;
            transition: all 0.3s;
        }

        .converter-title {
            text-align: center;
            margin-bottom: 24px;
        }

        .converter-title h2 {
            margin-bottom: 8px;
            color: var(--text);
            font-size: 24px;
        }

        .converter-title p {
            color: var(--text);
            opacity: 0.7;
            font-size: 13px;
        }

        .gradient-preview-wrapper {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 20px;
            border: 1px solid var(--box-border);
            height: 350px;
        }

        .gradient-preview-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(45deg, rgba(128,128,128,0.05) 25%, transparent 25%),
                linear-gradient(-45deg, rgba(128,128,128,0.05) 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, rgba(128,128,128,0.05) 75%),
                linear-gradient(-45deg, transparent 75%, rgba(128,128,128,0.05) 75%);
            background-size: 20px 20px;
            background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
            z-index: 0;
        }

        .gradient-preview {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            transition: background 0.3s;
        }

        .gradient-info {
            text-align: center;
            font-size: 13px;
            font-family: monospace;
            opacity: 0.8;
            margin-top: 12px;
            padding: 8px 16px;
            background: var(--bg);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .copy-btn {
            background: var(--box-bg);
            border: 1px solid var(--box-border);
            border-radius: 4px;
            cursor: pointer;
            padding: 4px 8px;
            font-size: 11px;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .copy-btn:hover {
            background: #4f46e5;
            color: white;
        }

        .copy-btn svg {
            stroke: currentColor;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
            gap: 6px;
            margin-top: 20px;
        }

        .gallery-item {
            height: 40px;
            border-radius: 6px;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.2s;
        }

        .gallery-item:hover {
            border-color: #4f46e5;
            transform: scale(1.05);
        }

        .acc-section {
            border: 1px solid var(--box-border);
            border-radius: 8px;
            margin-bottom: 8px;
            overflow: hidden;
        }

        .acc-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 12px;
            cursor: pointer;
            user-select: none;
            background: var(--bg);
            transition: background 0.2s;
        }

        .acc-header:hover { background: var(--box-border); }

        .acc-title {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
        }

        .acc-arrow {
            transition: transform 0.2s;
            opacity: 0.5;
        }

        .acc-body {
            display: none;
            padding: 10px 12px;
            border-top: 1px solid var(--box-border);
        }

        .acc-body.open { display: block; }

        .acc-header.active .acc-arrow { transform: rotate(180deg); }

        .compact-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            margin-bottom: 8px;
        }

        .compact-row label {
            font-size: 11px;
            opacity: 0.75;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .compact-row select,
        .compact-row input[type="range"],
        .compact-row input[type="number"] {
            flex: 1;
            padding: 4px 6px;
            border-radius: 5px;
            border: 1px solid var(--box-border);
            background: var(--bg);
            color: var(--text);
            font-size: 11px;
            min-width: 0;
        }

        .compact-check {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 11px;
            margin-bottom: 4px;
        }

        .compact-check input { cursor: pointer; width: 13px; height: 13px; }
        .compact-check label { cursor: pointer; opacity: 0.8; }

        .compact-input {
            width: 100%;
            padding: 5px 7px;
            border-radius: 5px;
            border: 1px solid var(--box-border);
            background: var(--bg);
            color: var(--text);
            font-size: 12px;
        }

        .dimension-row {
            display: flex;
            gap: 8px;
            margin-bottom: 8px;
        }

        .dimension-row > div {
            flex: 1;
        }

        .dimension-row label {
            font-size: 9px;
            opacity: 0.6;
            display: block;
            margin-bottom: 3px;
        }

        .color-track-wrapper {
            position: relative;
            height: 60px;
            margin: 12px 0 8px 0;
            user-select: none;
        }

        .color-track {
            position: absolute;
            top: 30px;
            left: 10px;
            right: 10px;
            height: 4px;
            background: var(--box-border);
            border-radius: 2px;
        }

        .stop-square {
            position: absolute;
            top: 14px;
            width: 24px;
            height: 24px;
            border-radius: 4px;
            cursor: grab;
            border: 2px solid white;
            box-shadow: 0 1px 3px rgba(0,0,0,0.2);
            transform: translateX(-50%);
            z-index: 5;
            transition: box-shadow 0.1s;
        }

        .stop-square.active {
            box-shadow: 0 0 0 4px rgba(79,70,229,0.3);
            border-color: #4f46e5;
        }

        .delete-stop {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 14px;
            height: 14px;
            background: #ef4444;
            color: white;
            border-radius: 50%;
            font-size: 9px;
            line-height: 14px;
            text-align: center;
            cursor: pointer;
            display: none;
        }

        .stop-square:hover .delete-stop {
            display: block;
        }

        .add-color-btn {
            width: 100%;
            padding: 8px;
            background: #4f46e5;
            color: white;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 12px;
            font-weight: 600;
            transition: all 0.2s;
            margin-bottom: 10px;
        }

        .add-color-btn:hover {
            background: #4338ca;
        }

        footer {
            margin-top: 40px;
            padding: 20px;
            text-align: center;
            border-top: 1px solid var(--box-border);
            font-size: 12px;
        }

        @media (max-width: 900px) {
            :root {
                --sidebar-settings-width: 280px;
                --sidebar-icons-width: 80px;
            }
            .main-wrapper {
                margin-right: calc(280px + 80px + var(--sidebar-gap) * 3);
            }
        }

        @media (max-width: 768px) {
            .right-sidebar-settings,
            .right-sidebar-icons {
                display: none;
            }
            .main-wrapper {
                margin-right: 0;
            }
            header {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }
            .title {
                font-size: 18px;
                text-align: center;
                justify-content: center;
            }
            .header-right {
                width: 100%;
                justify-content: center;
            }
            .gradient-preview-wrapper {
                height: 250px;
            }
        }

        @media (max-width: 480px) {
            .title { font-size: 16px; }
            .converter-title h2 { font-size: 20px; }
        }




        #rotate-warning {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            backdrop-filter: blur(12px);
            background: rgba(0,0,0,0.4);
            font-family: sans-serif;
          }
          
          .rotate-box {
            text-align: center;
            color: white;
            padding: 40px;
            border-radius: 20px;
            background: rgba(20,20,20,0.6);
            box-shadow: 0 0 30px rgba(0,0,0,0.6);
            animation: pop 0.4s ease;
          }
          
          .rotate-icon {
            font-size: 60px;
            margin-bottom: 20px;
          }
          
          @keyframes pop {
            from { transform: scale(0.8); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
          }