feat: enhance logo animations with interactive tilt and mixed mode support

css/styles.css

@@ -185,6 +185,12 @@ html, body {
     }
 }
 
+/* Interactive Tilt - responds to cursor/gyroscope, controlled by JavaScript */
+.logo--interactive {
+    transition: transform 0.15s ease-out;
+    will-change: transform;
+}
+
 /* All Full Logo Animations Combined */
 .logo--all {
     animation:
@@ -357,19 +363,25 @@ html, body {
     top: 20px;
     left: 50%;
     transform: translateX(-50%) translateY(-100px);
-    background: rgba(0, 0, 0, 0.85);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.08));
     color: #fff;
     padding: 16px 24px;
-    border-radius: 8px;
+    border-radius: 16px;
     font-size: 14px;
     font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
-    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
+    box-shadow:
+        0 8px 32px rgba(0, 0, 0, 0.3),
+        0 2px 8px rgba(0, 0, 0, 0.2),
+        inset 0 1px 0 rgba(255, 255, 255, 0.3),
+        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
     z-index: 999;
     opacity: 0;
-    transition: all 0.3s ease;
+    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
     pointer-events: none;
-    backdrop-filter: blur(10px);
-    border: 1px solid rgba(255, 255, 255, 0.1);
+    backdrop-filter: blur(40px) saturate(180%);
+    -webkit-backdrop-filter: blur(40px) saturate(180%);
+    border: 1px solid rgba(255, 255, 255, 0.25);
+    min-width: 200px;
 }
 
 .toast.show {
@@ -378,27 +390,29 @@ html, body {
 }
 
 .toast-title {
-    font-weight: bold;
+    font-weight: 600;
     margin-bottom: 4px;
-    color: var(--gradient-color-1);
+    color: rgba(255, 255, 255, 0.95);
+    font-size: 14px;
 }
 
 .toast-message {
     font-size: 13px;
-    opacity: 0.9;
+    color: rgba(255, 255, 255, 0.85);
 }
 
 /* ===== Help Button ===== */
 .help-button {
     position: fixed;
-    top: 20px;
+    bottom: 20px;
     right: 20px;
     width: 44px;
     height: 44px;
+    padding: 0;
     border-radius: 50%;
-    background: rgba(0, 0, 0, 0.75);
-    color: #fff;
-    border: 2px solid rgba(255, 255, 255, 0.2);
+    background: transparent;
+    color: rgba(255, 255, 255, 0.5);
+    border: 2px solid transparent;
     font-size: 24px;
     font-weight: bold;
     cursor: pointer;
@@ -407,15 +421,23 @@ html, body {
     align-items: center;
     justify-content: center;
     transition: all 0.3s ease;
-    backdrop-filter: blur(10px);
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
+    backdrop-filter: none;
+    box-shadow: none;
+    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
 }
 
 .help-button:hover {
-    background: rgba(102, 126, 234, 0.9);
-    border-color: rgba(255, 255, 255, 0.4);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.1));
+    border-color: rgba(255, 255, 255, 0.3);
+    color: #fff;
     transform: scale(1.1);
-    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
+    box-shadow:
+        0 8px 32px rgba(0, 0, 0, 0.2),
+        inset 0 1px 0 rgba(255, 255, 255, 0.4),
+        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
+    backdrop-filter: blur(40px) saturate(180%);
+    -webkit-backdrop-filter: blur(40px) saturate(180%);
+    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
 }
 
 .help-button:active {
@@ -430,16 +452,21 @@ html, body {
     width: 500px;
     max-width: calc(100vw - 40px);
     max-height: calc(100vh - 120px);
-    background: rgba(20, 20, 30, 0.95);
-    border: 1px solid rgba(255, 255, 255, 0.15);
-    border-radius: 12px;
-    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
-    backdrop-filter: blur(20px);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
+    border: 1px solid rgba(255, 255, 255, 0.25);
+    border-radius: 20px;
+    box-shadow:
+        0 8px 32px rgba(0, 0, 0, 0.3),
+        0 2px 8px rgba(0, 0, 0, 0.2),
+        inset 0 1px 0 rgba(255, 255, 255, 0.3),
+        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
+    backdrop-filter: blur(40px) saturate(180%);
+    -webkit-backdrop-filter: blur(40px) saturate(180%);
     z-index: 1000;
     opacity: 0;
     transform: translateY(-20px) scale(0.95);
     pointer-events: none;
-    transition: all 0.3s ease;
+    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
     overflow: hidden;
     font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
 }
@@ -455,8 +482,10 @@ html, body {
     justify-content: space-between;
     align-items: center;
     padding: 20px 24px;
-    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
-    background: rgba(102, 126, 234, 0.15);
+    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
+    backdrop-filter: blur(20px);
+    -webkit-backdrop-filter: blur(20px);
 }
 
 .help-header h2 {
@@ -469,22 +498,26 @@ html, body {
 .help-close {
     width: 32px;
     height: 32px;
-    border: none;
-    background: rgba(255, 255, 255, 0.1);
+    border: 1px solid rgba(255, 255, 255, 0.2);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
     color: #fff;
     font-size: 24px;
     line-height: 1;
-    border-radius: 6px;
+    border-radius: 8px;
     cursor: pointer;
     transition: all 0.2s ease;
     display: flex;
     align-items: center;
     justify-content: center;
+    backdrop-filter: blur(10px);
+    -webkit-backdrop-filter: blur(10px);
 }
 
 .help-close:hover {
-    background: rgba(255, 255, 255, 0.2);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.1));
+    border-color: rgba(255, 255, 255, 0.3);
     transform: rotate(90deg);
+    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
 }
 
 .help-content {
@@ -495,21 +528,25 @@ html, body {
 }
 
 .help-content::-webkit-scrollbar {
-    width: 8px;
+    width: 10px;
 }
 
 .help-content::-webkit-scrollbar-track {
     background: rgba(255, 255, 255, 0.05);
-    border-radius: 4px;
+    border-radius: 5px;
+    margin: 4px 0;
 }
 
 .help-content::-webkit-scrollbar-thumb {
-    background: rgba(102, 126, 234, 0.5);
-    border-radius: 4px;
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.15));
+    border-radius: 5px;
+    border: 2px solid transparent;
+    background-clip: padding-box;
 }
 
 .help-content::-webkit-scrollbar-thumb:hover {
-    background: rgba(102, 126, 234, 0.7);
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.25));
+    background-clip: padding-box;
 }
 
 .help-section {
@@ -523,7 +560,7 @@ html, body {
 .help-section h3 {
     font-size: 14px;
     font-weight: 600;
-    color: var(--gradient-color-1);
+    color: rgba(255, 255, 255, 0.9);
     margin: 0 0 12px 0;
     text-transform: uppercase;
     letter-spacing: 0.5px;
@@ -541,16 +578,38 @@ html, body {
     display: inline-block;
     min-width: 28px;
     padding: 4px 8px;
-    margin-right: 12px;
-    background: rgba(102, 126, 234, 0.2);
-    border: 1px solid rgba(102, 126, 234, 0.4);
-    border-radius: 4px;
+    margin: 0 6px;
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
+    border: 1px solid rgba(255, 255, 255, 0.3);
+    border-radius: 6px;
     font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;
     font-size: 13px;
     font-weight: 600;
     text-align: center;
-    color: var(--gradient-color-1);
-    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
+    color: rgba(255, 255, 255, 0.95);
+    box-shadow:
+        0 2px 4px rgba(0, 0, 0, 0.2),
+        inset 0 1px 0 rgba(255, 255, 255, 0.25);
+    cursor: pointer;
+    transition: all 0.2s ease;
+    user-select: none;
+    -webkit-user-select: none;
+}
+
+.help-item kbd:hover {
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.15));
+    border-color: rgba(255, 255, 255, 0.4);
+    transform: translateY(-1px);
+    box-shadow:
+        0 4px 8px rgba(0, 0, 0, 0.3),
+        inset 0 1px 0 rgba(255, 255, 255, 0.35);
+}
+
+.help-item kbd:active {
+    transform: translateY(0);
+    box-shadow:
+        0 1px 2px rgba(0, 0, 0, 0.2),
+        inset 0 1px 0 rgba(255, 255, 255, 0.2);
 }
 
 .help-section-url {
@@ -562,13 +621,13 @@ html, body {
 .help-code {
     background: rgba(0, 0, 0, 0.4);
     padding: 12px;
-    border-radius: 6px;
+    border-radius: 8px;
+    border: 1px solid rgba(255, 255, 255, 0.15);
     font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;
     font-size: 12px;
-    color: var(--gradient-color-3);
+    color: rgba(255, 255, 255, 0.85);
     margin-bottom: 16px;
     word-break: break-all;
-    border: 1px solid rgba(249, 147, 251, 0.2);
 }
 
 .help-params {
@@ -582,7 +641,7 @@ html, body {
 }
 
 .help-params strong {
-    color: var(--gradient-color-1);
+    color: rgba(255, 255, 255, 0.9);
     font-weight: 600;
     margin-right: 8px;
 }
@@ -650,6 +709,19 @@ html, body {
     .footer p {
         font-size: 12px;
     }
+
+    .help-button {
+        bottom: 15px;
+        right: 15px;
+        font-size: 20px;
+        width: 40px;
+        height: 40px;
+    }
+
+    .help-button:hover {
+        width: 40px;
+        height: 40px;
+    }
 }
 
 @media (max-width: 480px) {
@@ -713,6 +785,19 @@ html, body {
     .footer p {
         font-size: 11px;
     }
+
+    .help-button {
+        bottom: 12px;
+        right: 12px;
+        font-size: 18px;
+        width: 36px;
+        height: 36px;
+    }
+
+    .help-button:hover {
+        width: 36px;
+        height: 36px;
+    }
 }
 
 /* ===== Accessibility ===== */

index.html

@@ -12,7 +12,6 @@
     <div class="background" id="background"></div>
     <div class="logo-container">
         <svg xmlns="http://www.w3.org/2000/svg" id="logo" class="logo" viewBox="-745 -745 2000 2000">
-            <!-- Logo centered at origin (0,0) in a 2000x2000 viewBox that extends from -745 to 1255 in both directions -->
             <g id="shadoll_l" class="logo-element logo-element-l" fill="#222">
                 <path d="m286.7 401.2 61.9 60.2v-389.4l-62.4-60.6z" stroke="none" stroke-width="2" stroke-miterlimit="10"/>
             </g>
@@ -37,28 +36,28 @@
         <div class="help-content">
             <div class="help-section">
                 <h3>Background</h3>
-                <div class="help-item"><kbd>B</kbd> Toggle background animation (static ↔ animated)</div>
-                <div class="help-item"><kbd>G</kbd> Cycle gradient types (linear → radial → conic)</div>
+                <div class="help-item"><kbd data-key="b">B</kbd> Toggle background animation (static ↔ animated)</div>
+                <div class="help-item"><kbd data-key="g">G</kbd> Cycle gradient types (linear → radial → conic)</div>
             </div>
 
             <div class="help-section">
                 <h3>Logo Animations</h3>
-                <div class="help-item"><kbd>L</kbd> Cycle logo states (static → animated → full)</div>
-                <div class="help-item"><kbd>A</kbd> Cycle logo body animations (shake → rotate → tilt → all)</div>
-                <div class="help-item"><kbd>E</kbd> Cycle element animations (neon → color → explosion → fly → all)</div>
+                <div class="help-item"><kbd data-key="l">L</kbd> Cycle logo states (static → animated → full)</div>
+                <div class="help-item"><kbd data-key="a">A</kbd> Cycle logo body animations (shake → rotate → tilt → interactive → mixed → all)</div>
+                <div class="help-item"><kbd data-key="e">E</kbd> Cycle element animations (neon → color → explosion → fly → all)</div>
             </div>
 
             <div class="help-section">
                 <h3>Animation Speed</h3>
-                <div class="help-item"><kbd>+</kbd> Increase speed (+0.25x)</div>
-                <div class="help-item"><kbd>-</kbd> Decrease speed (-0.25x)</div>
-                <div class="help-item"><kbd>0</kbd> Reset speed to 1x</div>
+                <div class="help-item"><kbd data-key="+">+</kbd> Increase speed (+0.25x)</div>
+                <div class="help-item"><kbd data-key="-">-</kbd> Decrease speed (-0.25x)</div>
+                <div class="help-item"><kbd data-key="0">0</kbd> Reset speed to 1x</div>
             </div>
 
             <div class="help-section">
                 <h3>Other</h3>
-                <div class="help-item"><kbd>R</kbd> Reset all to defaults</div>
-                <div class="help-item"><kbd>H</kbd> or <kbd>?</kbd> Toggle this help</div>
+                <div class="help-item"><kbd data-key="r">R</kbd> Reset all to defaults</div>
+                <div class="help-item"><kbd data-key="h">H</kbd> or  <kbd data-key="?">?</kbd> Toggle this help</div>
             </div>
 
             <div class="help-section help-section-url">
@@ -68,7 +67,7 @@
                     <div><strong>bg:</strong> static | animated</div>
                     <div><strong>gradient:</strong> linear | radial | conic</div>
                     <div><strong>logo:</strong> static | animated | full</div>
-                    <div><strong>logoAnim:</strong> shake | rotate | tilt | all</div>
+                    <div><strong>logoAnim:</strong> shake | rotate | tilt | interactive | mixed | all</div>
                     <div><strong>elementAnim:</strong> neon | color | explosion | fly | all</div>
                     <div><strong>speed:</strong> 0.1 to 5 (default: 1)</div>
                 </div>

js/app.js

@@ -11,7 +11,7 @@
         bg: 'animated',           // static | animated
         gradient: 'linear',       // linear | radial | conic
         logo: 'full',            // static | animated | full
-        logoAnim: 'tilt',         // shake | rotate | tilt | all
+        logoAnim: 'mixed',        // shake | rotate | tilt | interactive | mixed | all
         elementAnim: 'neon',      // neon | color | explosion | fly | all
         speed: 0.5                 // 0.5 (slow) - 3 (fast)
     };
@@ -95,6 +95,23 @@
                 hideHelp();
             }
         });
+
+        // Make kbd elements clickable for touch devices
+        const kbdElements = document.querySelectorAll('.help-item kbd[data-key]');
+        kbdElements.forEach(kbd => {
+            kbd.addEventListener('click', (e) => {
+                e.stopPropagation();
+                const key = kbd.getAttribute('data-key');
+                // Simulate keyboard event
+                const event = new KeyboardEvent('keydown', {
+                    key: key,
+                    code: key,
+                    bubbles: true,
+                    cancelable: true
+                });
+                document.dispatchEvent(event);
+            });
+        });
     }
 
     // ===== Background Configuration =====
@@ -113,12 +130,170 @@
         }
     }
 
+    // ===== Interactive Tilt Controller =====
+    function createInteractiveTiltController(logoElement, mixedMode = false) {
+        let isActive = false;
+        let mode = 'cursor'; // 'cursor' or 'gyro'
+        let lastGyroTime = 0;
+        let lastCursorTime = 0;
+        let idleTimeout = null;
+        const SWITCH_TIMEOUT = 1000; // ms - time before switching modes
+        const IDLE_TIMEOUT = 2000; // ms - time with no movement before returning to tilt animation
+
+        // Tilt ranges
+        const MAX_TILT_X = 20; // degrees
+        const MAX_TILT_Y = 20; // degrees
+
+        function setInteractiveMode(active) {
+            if (mixedMode) {
+                if (active) {
+                    // Switch to interactive control
+                    logoElement.classList.remove('logo--tilt');
+                    logoElement.classList.add('logo--interactive');
+                } else {
+                    // Return to tilt animation
+                    logoElement.classList.remove('logo--interactive');
+                    logoElement.classList.add('logo--tilt');
+                    logoElement.style.transform = '';
+                }
+            }
+        }
+
+        function resetIdleTimer() {
+            if (!mixedMode) return;
+
+            if (idleTimeout) {
+                clearTimeout(idleTimeout);
+            }
+
+            // Switch to interactive mode
+            setInteractiveMode(true);
+
+            // Set timer to return to tilt animation after idle period
+            idleTimeout = setTimeout(() => {
+                setInteractiveMode(false);
+            }, IDLE_TIMEOUT);
+        }
+
+        function handleMouseMove(e) {
+            if (!isActive) return;
+
+            lastCursorTime = Date.now();
+
+            // Reset idle timer in mixed mode
+            resetIdleTimer();
+
+            // Auto-switch to cursor mode if gyro was active
+            if (mode === 'gyro' && (lastCursorTime - lastGyroTime) > SWITCH_TIMEOUT) {
+                mode = 'cursor';
+            }
+
+            if (mode === 'cursor') {
+                // Calculate cursor position (-1 to 1)
+                const x = (e.clientX / window.innerWidth) * 2 - 1;
+                const y = (e.clientY / window.innerHeight) * 2 - 1;
+
+                // Apply tilt based on cursor position
+                const rotateY = x * MAX_TILT_Y;
+                const rotateX = -y * MAX_TILT_X;
+
+                logoElement.style.transform = `perspective(400px) rotateY(${rotateY}deg) rotateX(${rotateX}deg)`;
+            }
+        }
+
+        function handleDeviceOrientation(e) {
+            if (!isActive) return;
+
+            // Check if we have valid gyroscope data
+            if (e.beta === null || e.gamma === null) return;
+
+            lastGyroTime = Date.now();
+
+            // Reset idle timer in mixed mode
+            resetIdleTimer();
+
+            // Auto-switch to gyro mode if cursor was active
+            if (mode === 'cursor' && (lastGyroTime - lastCursorTime) > SWITCH_TIMEOUT) {
+                mode = 'gyro';
+            }
+
+            if (mode === 'gyro') {
+                // beta: front-to-back tilt (-180 to 180)
+                // gamma: left-to-right tilt (-90 to 90)
+
+                // Normalize and clamp values
+                let rotateX = Math.max(-MAX_TILT_X, Math.min(MAX_TILT_X, e.beta / 4));
+                let rotateY = Math.max(-MAX_TILT_Y, Math.min(MAX_TILT_Y, e.gamma / 3));
+
+                logoElement.style.transform = `perspective(400px) rotateY(${rotateY}deg) rotateX(${rotateX}deg)`;
+            }
+        }
+
+        function requestPermission() {
+            // Request permission for iOS 13+ devices
+            if (typeof DeviceOrientationEvent !== 'undefined' && typeof DeviceOrientationEvent.requestPermission === 'function') {
+                DeviceOrientationEvent.requestPermission()
+                    .then(permissionState => {
+                        if (permissionState === 'granted') {
+                            window.addEventListener('deviceorientation', handleDeviceOrientation);
+                        }
+                    })
+                    .catch(console.error);
+            } else {
+                // Non-iOS or older browsers
+                window.addEventListener('deviceorientation', handleDeviceOrientation);
+            }
+        }
+
+        return {
+            start() {
+                if (isActive) return;
+                isActive = true;
+                mode = 'cursor';
+                lastCursorTime = Date.now();
+
+                // In mixed mode, start with tilt animation
+                if (mixedMode) {
+                    setInteractiveMode(false);
+                }
+
+                // Add cursor listener
+                document.addEventListener('mousemove', handleMouseMove);
+
+                // Try to add gyroscope listener
+                requestPermission();
+            },
+            stop() {
+                if (!isActive) return;
+                isActive = false;
+
+                // Clear idle timer
+                if (idleTimeout) {
+                    clearTimeout(idleTimeout);
+                    idleTimeout = null;
+                }
+
+                // Remove listeners
+                document.removeEventListener('mousemove', handleMouseMove);
+                window.removeEventListener('deviceorientation', handleDeviceOrientation);
+
+                // Reset transform
+                logoElement.style.transform = '';
+            }
+        };
+    }
+
     // ===== Logo Full-Body Animation Configuration =====
     function configureLogoAnimation(config) {
         const { logo, logoAnim } = config;
 
         // Remove all logo animation classes
-        elements.logo.classList.remove('logo--shake', 'logo--rotate', 'logo--tilt', 'logo--all');
+        elements.logo.classList.remove('logo--shake', 'logo--rotate', 'logo--tilt', 'logo--interactive', 'logo--all');
+
+        // Stop interactive mode if active
+        if (window.interactiveTiltController) {
+            window.interactiveTiltController.stop();
+        }
 
         // Apply logo animation if not static
         if (logo !== 'static') {
@@ -130,6 +305,20 @@
                 elements.logo.classList.add('logo--rotate');
             } else if (logoAnim === 'tilt') {
                 elements.logo.classList.add('logo--tilt');
+            } else if (logoAnim === 'interactive') {
+                elements.logo.classList.add('logo--interactive');
+                // Start interactive tilt mode (pure interactive, no mixed mode)
+                if (!window.interactiveTiltController) {
+                    window.interactiveTiltController = createInteractiveTiltController(elements.logo, false);
+                }
+                window.interactiveTiltController.start();
+            } else if (logoAnim === 'mixed') {
+                // Mixed mode: starts with tilt animation, switches to interactive on movement
+                elements.logo.classList.add('logo--tilt');
+                if (!window.interactiveTiltController) {
+                    window.interactiveTiltController = createInteractiveTiltController(elements.logo, true);
+                }
+                window.interactiveTiltController.start();
             }
         }
     }
@@ -277,7 +466,7 @@
                     break;
                 case 'a':
                     // Cycle logo body animations
-                    const logoAnims = ['shake', 'rotate', 'tilt', 'all'];
+                    const logoAnims = ['shake', 'rotate', 'tilt', 'interactive', 'mixed', 'all'];
                     const animIndex = logoAnims.indexOf(currentConfig.logoAnim);
                     currentConfig.logoAnim = logoAnims[(animIndex + 1) % logoAnims.length];
                     break;