body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f2f5;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}

.page-header {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
    width: 100%;
    max-width: 860px; /* Match main content max-width */
}

.page-header h1 {
    font-size: 2.2em;
    margin-bottom: 8px;
    color: #2c3e50;
}

.page-header p {
    font-size: 1.1em;
    color: #555;
    line-height: 1.6;
}

.main-content-wrapper {
    display: flex;
    flex-direction: row;
    gap: 25px;
    width: 100%;
    max-width: 860px; /* Adjusted max-width */
    align-items: flex-start;
}

.aroma-info-panel {
    flex-basis: 280px; /* Increased width for perfume details */
    flex-shrink: 0;
    background-color: #ffffff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.perfume-details {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}
.perfume-details h2 {
    font-size: 1.6em;
    color: #34495e;
    margin-top: 0;
    margin-bottom: 5px;
}
.perfume-details p {
    font-size: 1em;
    color: #666;
    font-style: italic;
    margin-top: 0;
}


.aroma-legend h3 { /* Changed from h2 */
    font-size: 1.2em; /* Adjusted size */
    color: #34495e;
    margin-top: 0;
    margin-bottom: 15px;
    text-align: center;
}

.aroma-legend table {
    width: 100%;
    border-collapse: collapse;
}

.aroma-legend th, .aroma-legend td {
    text-align: left;
    padding: 8px 5px;
    font-size: 0.9em; /* Slightly smaller for compactness */
    border-bottom: 1px solid #f0f0f0;
    vertical-align: middle;
}
.aroma-legend th {
    color: #555;
    font-weight: 600;
}
.aroma-legend tr:last-child td {
    border-bottom: none;
}
.aroma-legend td:nth-child(1), .aroma-legend th:nth-child(1) { /* # column */
    text-align: center;
    width: 20px;
}
.aroma-legend td:nth-child(4), .aroma-legend th:nth-child(4) { /* Dose column */
    text-align: right;
    width: 40px;
    font-weight: bold;
}


.color-swatch {
    display: inline-block;
    width: 16px; /* Adjusted size */
    height: 16px;
    border-radius: 3px;
    border: 1px solid #ccc;
    margin-right: 6px;
    vertical-align: middle;
}

.app-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0; /* Important for flex item to shrink properly */
}

/* Image Upload Section */
.image-upload-section {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-align: center;
    margin-bottom: 20px;
    width: 100%;
    max-width: 400px; /* Match dispenser width */
}

.image-upload-label {
    display: block;
    width: 100%;
    height: 200px; /* Adjust as needed */
    border: 2px dashed #ccc;
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #f9f9f9;
    overflow: hidden; /* To contain the image */
}
.image-upload-label:hover {
    border-color: #999;
}
.image-upload-label img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain; /* Changed from cover to contain for placeholder */
}
.image-upload-label span {
    margin-top: 10px;
    color: #777;
    font-size: 0.9em;
}
.image-upload-section button {
    padding: 10px 20px;
    font-size: 1em;
    background-color: #5cb85c;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}
.image-upload-section button:hover {
    background-color: #4cae4c;
}
.image-upload-section button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}
#loadingIndicator {
    margin-top: 10px;
    color: #337ab7;
}
.error-message {
    color: red;
    font-size: 0.9em;
    margin-top: 10px;
}


.dispenser-area {
    position: relative;
    width: 100%; /* Make it responsive within its container */
    max-width: 400px; /* Max size of the dispenser visuals */
    aspect-ratio: 400 / 450; /* Maintain aspect ratio */
    height: auto; /* Let aspect-ratio define height */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start; /* Aligns drum to top */
    margin-bottom: 20px;
    border: 2px solid #b0b0b0;
    padding: 5%; /* Use percentage padding */
    background-color: #fdfdfd;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    box-sizing: border-box;
}

.motor-base {
    width: 15%; /* Relative width */
    height: 7.5%; /* Relative height */
    background-color: #6c757d;
    border-radius: 5px;
    position: absolute;
    /* Position relative to drum */
    top: calc(7.5% + 31.25% - 3.75%); /* drum.marginTop + drum.height/2 - motor.height/2 */
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    z-index: 1;
}

.drum {
    width: 62.5%; /* 250px / 400px */
    height: 62.5%; /* 250px / 400px */
    background-image: radial-gradient(circle, #e0e0e0, #c0c0c0 60%, #a0a0a0);
    border-radius: 50%;
    position: relative;
    margin-top: 7.5%; /* 30px / 400px */
    border: 1%; /* 4px / 400px */
    border-style: solid;
    border-color: #555;
    box-shadow: 0 1% 3% rgba(0,0,0,0.25), inset 0 0 4.5% rgba(0,0,0,0.1);
    transition: transform 0.7s ease-in-out;
    transform-style: preserve-3d;
    z-index: 2;
    box-sizing: border-box;
}

.drum::before {
    content: '';
    position: absolute;
    width: 14%; /* 35px / 250px drum width */
    height: 14%;
    background-color: #4a4a4a;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1.2%; /* 3px / 250px */
    border-style: solid;
    border-color: #333;
    box-shadow: inset 0 0 3.2% rgba(0,0,0,0.6);
    z-index: 3;
}

.bottle-slot {
    position: absolute;
    width: 9.6%; /* 24px / 250px drum width */
    height: 50%; /* Drum radius */
    left: calc(50% - 4.8%); /* 50% - (width/2) */
    top: 50%;
    transform-origin: center top;
    z-index: 4;
}

.base-aroma-bottle {
    width: 100%; /* Full width of slot */
    height: 36%; /* 45px / 125px slot height */
    border: 0.8%; /* 1px / 125px slot height */
    border-style: solid;
    border-color: #4a2d0a;
    border-radius: 5px 5px 3px 3px; /* Keep somewhat fixed for shape */
    position: absolute;
    bottom: -4%; /* -5px / 125px */
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7em; /* Make font responsive */
    font-weight: bold;
    color: white;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.9);
    box-shadow: 1px 2px 5px rgba(0,0,0,0.3);
    cursor: default;
    box-sizing: border-box;
}

.base-aroma-bottle::before {
    content: '';
    position: absolute;
    top: -15.5%; /* -7px / 45px bottle height */
    left: 50%;
    transform: translateX(-50%);
    width: 66.6%; /* 16px / 24px bottle width */
    height: 15.5%; /* 7px / 45px bottle height */
    background-color: #282828;
    border-radius: 3px 3px 0 0;
    border: 0.4%; /* 1px / 250px drum width (approx for small elements) */
    border-style: solid;
    border-color: #111;
}

.perfume-flask {
    width: 13.75%; /* 55px / 400px */
    height: 20%;    /* 90px / 450px */
    background-color: rgba(200, 225, 255, 0.75);
    border: 0.5%; /* 2px / 400px */
    border-style: solid;
    border-color: #adcdea;
    border-radius: 6px 6px 25px 25px;
    position: absolute;
    bottom: 5.5%; /* 25px / 450px */
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0.8% 1.6% rgba(0,0,0,0.1);
    z-index: 3;
    box-sizing: border-box;
}
.perfume-flask::before {
    content: '';
    position: absolute;
    top: -20%; /* -18px / 90px flask height */
    left: 50%;
    transform: translateX(-50%);
    width: 40%; /* 22px / 55px flask width */
    height: 20%; /* 18px / 90px flask height */
    background-color: rgba(200, 225, 255, 0.75);
    border: 0.5%; /* 2px / 400px */
    border-style: solid;
    border-color: #adcdea;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
    border-bottom: none;
}
.perfume-liquid {
    width: 100%;
    height: 0%;
    position: absolute;
    bottom: 0;
    border-radius: 0 0 23px 23px;
    transition: height 0.5s ease-out, background-color 0.5s ease;
}

.dispensing-stream {
    position: absolute;
    width: 0.75%; /* 3px / 400px */
    height: 0px;
    left: 50%;
    transform: translateX(-50%);
    transition: height 0.25s ease-out;
    z-index: 1; /* Behind drum */
    border-radius: 2px;
}

.controls {
    display: flex; /* Will be shown by JS */
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px; /* Match dispenser max width */
    margin-top: 10px; /* Space from dispenser if it's visible */
}
.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    justify-content: space-between;
}
 .control-group label, .control-group > span:not(#aromaNumberDisplay):not(#doseDisplay) {
    flex-shrink: 0;
}
#doseSlider {
    flex-grow: 1;
}

.controls button {
    padding: 10px 18px;
    font-size: 1em;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid #ced4da;
    background-color: #f8f9fa;
    color: #343a40;
    border-radius: 5px;
    transition: background-color 0.2s, box-shadow 0.2s;
}
.controls button:hover {
    background-color: #e9ecef;
    border-color: #adb5bd;
}
.controls button:active {
    background-color: #dee2e6;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}
.controls button:disabled {
    background-color: #e9ecef;
    color: #6c757d;
    cursor: not-allowed;
}
.display { /* This is for the animation controls display */
    padding: 10px 15px;
    background-color: #343a40;
    color: #90ee90;
    border-radius: 4px;
    width: calc(100% - 30px); /* Full width minus padding */
    text-align: center;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 1em;
    border: 1px solid #495057;
    margin-bottom: 5px;
}

/* Adaptive Design */
@media (max-width: 880px) { /* Slightly wider than main content for smoother transition */
    .main-content-wrapper {
        flex-direction: column;
        align-items: center; /* Center items when stacked */
        gap: 20px;
    }
    .aroma-info-panel {
        flex-basis: auto; /* Allow it to take full width */
        width: 100%;
        max-width: 450px; /* Limit width when stacked */
    }
    .app-area {
        width: 100%;
        align-items: center; /* Ensure app area children are centered */
    }
    .image-upload-section, .dispenser-area, .controls {
        max-width: 450px; /* Allow them to be a bit wider if info panel is full width */
    }
}

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 1.8em;
    }
    .page-header p {
        font-size: 1em;
    }
    .aroma-info-panel, .image-upload-section, .dispenser-area, .controls {
        padding: 15px;
    }
    .controls button, .display, .image-upload-section button {
        font-size: 0.9em;
    }
    .aroma-legend th, .aroma-legend td {
        font-size: 0.85em;
        padding: 6px 3px;
    }
    .base-aroma-bottle {
        font-size: 0.6em; /* Further reduce for very small screens */
    }
}