Realistic Modern Pendant Lamp Animation | HTML, CSS & JavaScript

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

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    background: #0a0a0a;
    overflow: hidden;
    font-family: system-ui, -apple-system, sans-serif;
}

/* Hidden Checkbox for Click Interaction */
#lamp-switch {
    display: none;
}

/* UI Hint */
.hint {
    position: absolute;
    top: 20px;
    color: #444;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: 0.5s;
    pointer-events: none;
}

/* Room Ambient Light */
.room-light {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 30%, rgba(255, 200, 100, 0.15), transparent 70%);
    opacity: 0;
    transition: opacity 0.8s ease;
    pointer-events: none;
}

/* Lamp Assembly (Handles the swing) */
.lamp-wrapper {
    position: relative;
    transform-origin: top center;
    animation: swing 5s ease-in-out infinite;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 10;
    cursor: pointer;
}

/* Braided Wire */
.wire {
    width: 4px;
    height: 25vh; /* Responsive height */
    background: linear-gradient(to right, #222, #444, #222);
    box-shadow: inset 1px 0 2px rgba(255,255,255,0.1);
}

/* Modern Rounded Shade */
.shade {
    position: relative;
    width: 160px;
    height: 90px;
    background: linear-gradient(to right, #1a1a1a, #333 30%, #111 80%, #1a1a1a);
    border-radius: 60px 60px 0 0;
    box-shadow: inset 0 -5px 15px rgba(0,0,0,0.9);
}

/* Inner Metallic Rim */
.shade::after {
    content: "";
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100%;
    height: 12px;
    background: linear-gradient(to right, #6b4c1a, #b8860b, #6b4c1a);
    border-radius: 50%;
    box-shadow: 
        inset 0 2px 5px rgba(0,0,0,0.8),
        0 5px 10px rgba(0,0,0,0.5);
    z-index: 2;
}

/* Edison Style Bulb */
.bulb {
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 45px;
    height: 45px;
    background: #333;
    border-radius: 50%;
    transition: all 0.5s ease;
    z-index: 1;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.9);
}

/* Soft Light Beam */
.beam {
    position: absolute;
    top: calc(25vh + 90px); /* Starts right below shade */
    left: 50%;
    transform: translateX(-50%);
    width: 350px;
    height: 75vh;
    background: linear-gradient(to bottom, rgba(255, 220, 120, 0.4), transparent 80%);
    clip-path: polygon(38% 0%, 62% 0%, 100% 100%, 0% 100%);
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
    filter: blur(12px);
}

/* Dynamic Floor Reflection */
.floor {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 70vw; /* Responsive width */
    height: 15vh;
    background: radial-gradient(ellipse at center, rgba(255, 200, 80, 0.25), transparent 60%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.8s ease;
    pointer-events: none;
}

/* =========================================
   ON STATES (Triggered by hidden checkbox)
   ========================================= */

#lamp-switch:checked ~ .lamp-wrapper .bulb {
    background: #fff8d0;
    box-shadow: 
        0 0 20px #fff2a6,
        0 0 50px #ffd76a,
        0 0 100px #ffcf4a;
    animation: flicker 0.2s infinite alternate;
}

#lamp-switch:checked ~ .lamp-wrapper .beam {
    opacity: 1;
}

#lamp-switch:checked ~ .floor {
    opacity: 1;
}

#lamp-switch:checked ~ .room-light {
    opacity: 1;
}

#lamp-switch:checked ~ .hint {
    opacity: 0;
}

/* Smooth Swing Motion */
@keyframes swing {
    0%, 100% { transform: rotate(-4deg); }
    50% { transform: rotate(4deg); }
}

/* Subtle Flicker for Realism */
@keyframes flicker {
    from { filter: brightness(100%); }
    to { filter: brightness(110%); }
}

- Realistic Modern Pendant Lamp Animation

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