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+<!DOCTYPE html>
+<html lang="tr">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Numex Codex Resim Düzenleyici</title>
+    <style>
+        body {
+            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            background-color: #f0f2f5;
+            margin: 0;
+            padding: 20px;
+            color: #333;
+        }
+        .container {
+            background-color: #fff;
+            border-radius: 12px;
+            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
+            padding: 30px;
+            width: 100%;
+            max-width: min(900px, 95vw); /* Geniş ekranda 900px, dar ekranda %95 — taşmaz */
+            box-sizing: border-box;
+            display: flex;
+            flex-direction: column;
+            gap: 25px;
+        }
+        h1 {
+            color: #1a202c;
+            margin-bottom: 20px;
+            text-align: center;
+            font-size: 1.6em;        /* mobil: küçük */
+            line-height: 1.2;
+        }
+        @media (min-width: 640px) { h1 { font-size: 1.9em; } }   /* sm */
+        @media (min-width: 768px) { h1 { font-size: 2.2em; } }   /* md */
+        .controls, .filters, .actions {
+            display: flex;
+            flex-wrap: wrap;
+            gap: 15px;
+            justify-content: center;
+            padding: 15px 0;
+            border-top: 1px solid #eee;
+            border-bottom: 1px solid #eee;
+        }
+        .controls label, .filters label {
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            font-size: 0.9em;
+            color: #555;
+            min-width: 80px;
+            min-height: 44px;
+            justify-content: center;
+        }
+        .controls input[type="range"] {
+            width: 100px;
+            margin-top: 8px;
+            -webkit-appearance: none;
+            appearance: none;
+            height: 44px; /* Dokunma/işaret hedefi büyük */
+            background: transparent;
+            outline: none;
+            opacity: 0.8;
+            transition: opacity .2s;
+            background-image: linear-gradient(#ddd, #ddd);
+            background-repeat: no-repeat;
+            background-size: 100% 6px;
+            background-position: center;
+        }
+        .controls input[type="range"]::-webkit-slider-thumb {
+            -webkit-appearance: none;
+            appearance: none;
+            width: 18px;
+            height: 18px;
+            border-radius: 50%;
+            background: #007bff;
+            cursor: pointer;
+            box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
+        }
+        .controls input[type="range"]::-moz-range-thumb {
+            width: 18px;
+            height: 18px;
+            border-radius: 50%;
+            background: #007bff;
+            cursor: pointer;
+            box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
+        }
+        button {
+            background-color: #0b5ed7; /* Daha koyu → kontrast güçlü */
+            color: #fff;
+            border: none;
+            padding: 10px 20px;
+            min-height: 44px; /* Dokunma hedefi ≥ 44px */
+            border-radius: 8px;
+            cursor: pointer;
+            font-size: 1em;
+            transition: background-color 0.3s ease, transform 0.2s ease;
+            box-shadow: 0 2px 10px rgba(11, 94, 215, 0.25);
+        }
+        button:hover {
+            background-color: #084298;
+            transform: translateY(-2px);
+        }
+        button:active {
+            transform: translateY(0);
+        }
+        button#downloadBtn {
+            background-color: #198754;
+        }
+        button#downloadBtn:hover {
+            background-color: #157347;
+        }
+        button#resetBtn {
+            background-color: #bb2d3b;
+        }
+        button#resetBtn:hover {
+            background-color: #b02a37;
+        }
+        /* Aktif filtre durumu işareti (gri tonlama / sepia) */
+        button.active-filter {
+            outline: 3px solid #ffc107;
+            outline-offset: 2px;
+            box-shadow: 0 0 0 4px rgba(255, 193, 7, 0.4);
+        }
+        .canvas-area {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            background-color: #e9ecef;
+            border-radius: 8px;
+            padding: 20px;
+            min-height: 400px;
+            overflow: hidden; /* Canvas'ı taşma durumunda gizle */
+        }
+        canvas {
+            max-width: 100%;
+            max-height: 60vh; /* Ekran yüksekliğinin %60'ı */
+            border: 1px solid #ccc;
+            background-color: #fff;
+            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
+            display: block; /* Alt boşluğu engellemek için */
+        }
+        input[type="file"] {
+            position: absolute;
+            width: 1px;
+            height: 1px;
+            clip-path: inset(50%);
+            overflow: hidden;
+            white-space: nowrap;
+        }
+        .file-upload-label {
+            background-color: #565e64;
+            color: #fff;
+            padding: 10px 20px;
+            min-height: 44px;
+            display: inline-flex;
+            align-items: center;
+            border-radius: 8px;
+            cursor: pointer;
+            font-size: 1em;
+            transition: background-color 0.3s ease;
+            box-shadow: 0 2px 10px rgba(86, 94, 100, 0.25);
+        }
+        .file-upload-label:hover {
+            background-color: #4b5257;
+        }
+
+        @media (max-width: 768px) {
+            .container {
+                padding: 20px;
+                gap: 20px;
+            }
+            h1 {
+                font-size: 1.8em;
+            }
+            .controls, .filters, .actions {
+                flex-direction: column;
+                align-items: center;
+            }
+            .controls label, .filters label {
+                width: 100%;
+                text-align: center;
+            }
+            .controls input[type="range"] {
+                width: 80%;
+            }
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <h1>Numex Codex Resim Düzenleyici</h1>
+
+        <div class="actions">
+            <input type="file" id="imageLoader" accept="image/*">
+            <label for="imageLoader" class="file-upload-label">Resim Yükle</label>
+            <button id="rotateLeftBtn">Sola Döndür</button>
+            <button id="rotateRightBtn">Sağa Döndür</button>
+            <button id="cropBtn">Kırp</button>
+        </div>
+
+        <div class="controls">
+            <label>Parlaklık: <input type="range" id="brightness" min="0" max="200" value="100"></label>
+            <label>Kontrast: <input type="range" id="contrast" min="0" max="200" value="100"></label>
+            <label>Doygunluk: <input type="range" id="saturation" min="0" max="200" value="100"></label>
+        </div>
+
+        <div class="filters">
+            <button id="grayscaleBtn">Gri Tonlama</button>
+            <button id="sepiaBtn">Sepia</button>
+            <button id="resetFiltersBtn">Filtreleri Sıfırla</button>
+        </div>
+
+        <div class="canvas-area">
+            <canvas id="imageCanvas"></canvas>
+        </div>
+
+        <div class="actions">
+            <button id="downloadBtn">Resmi İndir</button>
+            <button id="resetBtn">Sıfırla</button>
+        </div>
+    </div>
+
+    <script>
+        /**
+         * Numex Codex Resim Düzenleyici
+         * Saf Canvas API — harici kütüphane yok.
+         * Modüler yaklaşım: her davranış (durum, canvas, görüntü, filtre,
+         * kırpma, döndürme, işlemler) kendi küçük nesnesinde toplanır.
+         */
+        (function () {
+            'use strict';
+
+            /* ==========================================================
+             * 1. DURUM (State) — Uygulamanın tek gerçek kaynağı
+             * ========================================================== */
+            const State = {
+                originalImage: null,      // Orijinal Image nesnesi (yüklenen)
+                displayImage: null,       // Mevcut düzenlenmiş Image (kırp/döndür sonrası)
+                brightness: 100,          // % (100 = nötr)
+                contrast: 100,            // % (100 = nötr)
+                saturation: 100,          // % (100 = nötr)
+                grayscale: false,         // Gri tonlama aktif mi
+                sepia: false,             // Sepia aktif mi
+                cropMode: false,          // Kırpma modu açık mı
+
+                // Orijinal değerlere dönmek için saklanan yedek
+                backup() {
+                    return {
+                        displayImage: this.displayImage,
+                        brightness: this.brightness,
+                        contrast: this.contrast,
+                        saturation: this.saturation,
+                        grayscale: this.grayscale,
+                        sepia: this.sepia
+                    };
+                },
+                restore(snapshot) {
+                    this.displayImage = snapshot.displayImage;
+                    this.brightness = snapshot.brightness;
+                    this.contrast = snapshot.contrast;
+                    this.saturation = snapshot.saturation;
+                    this.grayscale = snapshot.grayscale;
+                    this.sepia = snapshot.sepia;
+                }
+            };
+
+            /* ==========================================================
+             * 2. DOM YARDIMCILARI — Element erişimini tek yerden yönet
+             * ========================================================== */
+            const Dom = {
+                fileInput: document.getElementById('imageLoader'),
+                canvas: document.getElementById('imageCanvas'),
+                ctx: null,
+
+                init() {
+                    this.ctx = this.canvas.getContext('2d');
+                }
+            };
+
+            /* ==========================================================
+             * 3. GÖRÜNTÜ (Image) — Yükleme, ayarlama, sıfırlama
+             * ========================================================== */
+            const ImageManager = {
+                load(file) {
+                    if (!file) return;
+                    const reader = new FileReader();
+                    reader.onload = (event) => {
+                        const img = new Image();
+                        img.onload = () => {
+                            State.originalImage = img;
+                            State.displayImage = img;
+                            resetAdjustments();
+                            CanvasD.setup(img.width, img.height);
+                            Renderer.render();
+                        };
+                        img.onerror = () => alert('Resim yüklenemedi! Lütfen geçerli bir resim dosyası seçin.');
+                        img.src = event.target.result;
+                    };
+                    reader.readAsDataURL(file);
+                }
+            };
+
+            /* ==========================================================
+             * 4. CANVAS — Boyut ayarlama ve tuvale çizim
+             * ========================================================== */
+            const CanvasD = {
+                setup(width, height) {
+                    const maxW = 800, maxH = 600;
+                    let w = width, h = height;
+                    if (w > maxW || h > maxH) {
+                        const ratio = Math.min(maxW / w, maxH / h);
+                        w = Math.round(w * ratio);
+                        h = Math.round(h * ratio);
+                    }
+                    Dom.canvas.width = w;
+                    Dom.canvas.height = h;
+                },
+                get ctx() { return Dom.ctx; }
+            };
+
+            /* ==========================================================
+             * 5. RENDER; — Tüm görsel ayarları uygulayıp tuvale çizer
+             * ========================================================== */
+            const Renderer = {
+                render() {
+                    const img = State.displayImage;
+                    if (!img) return;
+                    const ctx = CanvasD.ctx;
+
+                    // Mevcut kanvas boyutuna resmi sığdır (boyut korunsun)
+                    CanvasD.setup(img.width, img.height);
+                    ctx.clearRect(0, 0, Dom.canvas.width, Dom.canvas.height);
+                    ctx.drawImage(img, 0, 0, Dom.canvas.width, Dom.canvas.height);
+
+                    // CSS filtreleri tek seferde birleştirip uygula
+                    let filterString = 'none';
+                    if (State.brightness !== 100 || State.contrast !== 100 || State.saturation !== 100
+                        || State.grayscale || State.sepia) {
+                        const parts = [];
+                        parts.push('brightness(' + State.brightness + '%)');
+                        parts.push('contrast(' + State.contrast + '%)');
+                        parts.push('saturate(' + State.saturation + '%)');
+                        if (State.grayscale) parts.push('grayscale(1)');
+                        if (State.sepia) parts.push('sepia(1)');
+                        filterString = parts.join(' ');
+                    }
+                    ctx.filter = filterString;
+                    ctx.drawImage(img, 0, 0, Dom.canvas.width, Dom.canvas.height);
+                    ctx.filter = 'none'; // Sonraki çizimleri etkilemesin
+                }
+            };
+
+            /* ==========================================================
+             * 6. AYARLAR (Filters) — Parlaklık/kontrast/doygunluk + renk filtreleri
+             * ========================================================== */
+            const Adjustments = {
+                brightness() { State.brightness = +DomBrightness.value; Renderer.render(); },
+                contrast() { State.contrast = +DomContrast.value; Renderer.render(); },
+                saturation() { State.saturation = +DomSaturation.value; Renderer.render(); },
+                toggleGrayscale() {
+                    State.grayscale = !State.grayscale;
+                    if (State.grayscale) State.sepia = false; // ikisi birden olmaz
+                    updateFilterButtons();
+                    Renderer.render();
+                },
+                toggleSepia() {
+                    State.sepia = !State.sepia;
+                    if (State.sepia) State.grayscale = false;
+                    updateFilterButtons();
+                    Renderer.render();
+                },
+                reset() {
+                    State.brightness = 100;
+                    State.contrast = 100;
+                    State.saturation = 100;
+                    State.grayscale = false;
+                    State.sepia = false;
+                    updateFilterButtons();
+                    syncSliders();
+                    Renderer.render();
+                }
+            };
+
+            /* ==========================================================
+             * 7. KIRPMA (Crop) — Sürükleme ile bölge seç, naklet
+             * ========================================================== */
+            const Crop = {
+                startX: 0, startY: 0, endX: 0, endY: 0,
+                active: false,
+
+                enterMode() {
+                    if (!State.displayImage) { alert('Önce bir resim yükleyin!'); return; }
+                    State.cropMode = true;
+                    this.capture();
+                },
+
+                capture() {
+                    State.cropMode = true;
+                    const rect = Dom.canvas.getBoundingClientRect();
+                    const scaleX = Dom.canvas.width / rect.width;
+                    const scaleY = Dom.canvas.height / rect.height;
+
+                    Dom.canvas.style.cursor = 'crosshair';
+                    const onMouseDown = (e) => {
+                        this.active = true;
+                        this.startX = (e.clientX - rect.left) * scaleX;
+                        this.startY = (e.clientY - rect.top) * scaleY;
+                        this.endX = this.startX;
+                        this.endY = this.startY;
+                    };
+                    const onMouseMove = (e) => {
+                        if (!this.active) return;
+                        this.endX = (e.clientX - rect.left) * scaleX;
+                        this.endY = (e.clientY - rect.top) * scaleY;
+                        this.drawOverlay();
+                    };
+                    const onMouseUp = () => {
+                        if (!this.active) return;
+                        this.active = false;
+                        Dom.canvas.style.cursor = 'default';
+                        this.commit();
+                        Dom.canvas.removeEventListener('mousedown', onMouseDown);
+                        Dom.canvas.removeEventListener('mousemove', onMouseMove);
+                        Dom.canvas.removeEventListener('mouseup', onMouseUp);
+                    };
+
+                    Dom.canvas.addEventListener('mousedown', onMouseDown);
+                    Dom.canvas.addEventListener('mousemove', onMouseMove);
+                    Dom.canvas.addEventListener('mouseup', onMouseUp);
+                },
+
+                drawOverlay() {
+                    const ctx = CanvasD.ctx;
+                    ctx.clearRect(0, 0, Dom.canvas.width, Dom.canvas.height);
+                    // Orijinal görüntüyü çiz, sonra seçimi vurgula
+                    ctx.drawImage(State.displayImage, 0, 0, Dom.canvas.width, Dom.canvas.height);
+                    const x = Math.min(this.startX, this.endX);
+                    const y = Math.min(this.startY, this.endY);
+                    const w = Math.abs(this.endX - this.startX);
+                    const h = Math.abs(this.endY - this.startY);
+
+                    ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
+                    // Dört kenar boyunca karart
+                    ctx.fillRect(0, 0, Dom.canvas.width, y);
+                    ctx.fillRect(0, y + h, Dom.canvas.width, Dom.canvas.height - (y + h));
+                    ctx.fillRect(0, y, x, h);
+                    ctx.fillRect(x + w, y, Dom.canvas.width - (x + w), h);
+
+                    ctx.strokeStyle = 'rgba(0, 123, 255, 0.9)';
+                    ctx.lineWidth = 2;
+                    ctx.strokeRect(x, y, w, h);
+                },
+
+                commit() {
+                    const x = Math.min(this.startX, this.endX);
+                    const y = Math.min(this.startY, this.endY);
+                    const w = Math.abs(this.endX - this.startX);
+                    const h = Math.abs(this.endY - this.startY);
+
+                    if (w < 5 || h < 5) {
+                        Renderer.render(); // Çok küçük seçim → iptal
+                        return;
+                    }
+
+                    // Yeni bir offscreen canvas'ta seçilen bölgeyi kırp
+                    const cropCanvas = document.createElement('canvas');
+                    cropCanvas.width = Math.round(w);
+                    cropCanvas.height = Math.round(h);
+                    const cropCtx = cropCanvas.getContext('2d');
+                    cropCtx.drawImage(State.displayImage, Math.round(x), Math.round(y), Math.round(w), Math.round(h), 0, 0, Math.round(w), Math.round(h));
+
+                    // Kırpılmış görüntüyü yeni bir Image olarak ayarla
+                    const img = new Image();
+                    img.onload = () => {
+                        State.displayImage = img;
+                        Renderer.render();
+                    };
+                    img.src = cropCanvas.toDataURL();
+                    State.cropMode = false;
+                }
+            };
+
+            /* ==========================================================
+             * 8. DÖNDÜRME (Rotate) — 90° adımlarla, resim yeniden örneklenir
+             * ========================================================== */
+            const Rotator = {
+                rotate(angle) {
+                    if (!State.displayImage) { alert('Önce bir resim yükleyin!'); return; }
+                    const img = State.displayImage;
+                    const rotated = document.createElement('canvas');
+                    if (angle === 90 || angle === -90) {
+                        rotated.width = img.height;
+                        rotated.height = img.width;
+                    } else {
+                        rotated.width = img.width;
+                        rotated.height = img.height;
+                    }
+                    const rctx = rotated.getContext('2d');
+                    rctx.translate(rotated.width / 2, rotated.height / 2);
+                    rctx.rotate(angle * Math.PI / 180);
+                    rctx.drawImage(img, -img.width / 2, -img.height / 2);
+                    const result = new Image();
+                    result.onload = () => {
+                        State.displayImage = result;
+                        Renderer.render();
+                    };
+                    result.src = rotated.toDataURL();
+                },
+                left() { this.rotate(90); },
+                right() { this.rotate(-90); }
+            };
+
+            /* ==========================================================
+             * 9. İNDİRME (Export) — Canvas'ı PNG olarak kaydet
+             * ========================================================== */
+            const Export = {
+                download() {
+                    if (!State.displayImage) { alert('Önce bir resim yükleyin!'); return; }
+                    const link = document.createElement('a');
+                    link.download = 'duzenlenmis-resim.png';
+                    link.href = Dom.canvas.toDataURL('image/png');
+                    link.click();
+                },
+                reset() {
+                    if (!State.originalImage) { alert('Henüz resim yüklenmedi, sıfırlanacak bir şey yok.'); return; }
+                    State.displayImage = State.originalImage;
+                    resetAdjustments();
+                    Renderer.render();
+                }
+            };
+
+            /* ==========================================================
+             * 10. SLAYT SENKRON VE SIFIRLAMA YARDIMCILARI
+             * ========================================================== */
+            const DomBrightness = document.getElementById('brightness');
+            const DomContrast = document.getElementById('contrast');
+            const DomSaturation = document.getElementById('saturation');
+
+            function resetAdjustments() {
+                State.brightness = 100;
+                State.contrast = 100;
+                State.saturation = 100;
+                State.grayscale = false;
+                State.sepia = false;
+                updateFilterButtons();
+                syncSliders();
+            }
+            function updateFilterButtons() {
+                const gBtn = document.getElementById('grayscaleBtn');
+                const sBtn = document.getElementById('sepiaBtn');
+                gBtn.classList.toggle('active-filter', State.grayscale);
+                sBtn.classList.toggle('active-filter', State.sepia);
+            }
+            function syncSliders() {
+                DomBrightness.value = State.brightness;
+                DomContrast.value = State.contrast;
+                DomSaturation.value = State.saturation;
+            }
+
+            /* ==========================================================
+             * 11. OLAY BAĞLANTILARI (Event Wiring)
+             * ========================================================== */
+            function wireEvents() {
+                Dom.fileInput.addEventListener('change', (e) => ImageManager.load(e.target.files[0]));
+
+                document.getElementById('brightness').addEventListener('input', Adjustments.brightness);
+                document.getElementById('contrast').addEventListener('input', Adjustments.contrast);
+                document.getElementById('saturation').addEventListener('input', Adjustments.saturation);
+
+                document.getElementById('grayscaleBtn').addEventListener('click', Adjustments.toggleGrayscale);
+                document.getElementById('sepiaBtn').addEventListener('click', Adjustments.toggleSepia);
+                document.getElementById('resetFiltersBtn').addEventListener('click', Adjustments.reset);
+
+                document.getElementById('rotateLeftBtn').addEventListener('click', () => Rotator.left());
+                document.getElementById('rotateRightBtn').addEventListener('click', () => Rotator.right());
+                document.getElementById('cropBtn').addEventListener('click', () => Crop.enterMode());
+
+                document.getElementById('downloadBtn').addEventListener('click', Export.download);
+                document.getElementById('resetBtn').addEventListener('click', Export.reset);
+            }
+
+            /* ==========================================================
+             * 12. UYGULAMA BAŞLATMA
+             * ========================================================== */
+            function init() {
+                Dom.init();
+                wireEvents();
+            }
+
+            document.addEventListener('DOMContentLoaded', init);
+        })();
+    </script>
+</body>
+</html>
