/* ---------- общие сбросы и база ---------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #f8f9fa;
    color: #212529;
    padding: 20px;
    line-height: 1.5;
}
.container {
    max-width: 640px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    padding: 32px 24px;
}
/* для viewer контейнер шире */
.viewer-container {
    max-width: 960px;
}

h2 {
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.6rem;
    color: #1a1a1a;
}
h3 {
    font-weight: 500;
    margin: 16px 0 8px;
    font-size: 1.1rem;
}

/* ---------- формы и кнопки ---------- */
label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    cursor: pointer;
}
input[type="file"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    background: #fff;
    font-size: 0.95rem;
}
input[type="number"] {
    width: 70px;
    padding: 6px 8px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    text-align: center;
}
fieldset {
    border: 1px solid #dee2e6;
    border-radius: 6px;
    padding: 12px 16px;
    margin: 16px 0;
}
legend {
    font-weight: 500;
    color: #495057;
}
button {
    display: inline-block;
    padding: 10px 24px;
    background-color: #0d6efd;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-right: 8px;
    margin-bottom: 4px;
}
button:hover {
    background-color: #0b5ed7;
}

/* ---------- блок лога (главная) ---------- */
#log {
    background: #f1f3f5;
    padding: 16px;
    border-radius: 6px;
    height: 200px;
    overflow-y: auto;
    font-family: "SF Mono", "Fira Code", Consolas, monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    border: 1px solid #dee2e6;
    margin-top: 12px;
}
#status {
    color: #0d6efd;
}

/* ---------- просмотрщик ---------- */
.controls-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
select {
    padding: 8px 12px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    background: white;
    font-size: 0.95rem;
}
#viewport {
    width: 100%;
    
    max-height: 500px;
    overflow: auto;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    background: white;
    margin-bottom: 20px;
}
#canvas-wrapper {
    position: relative;
    background: white;
    /* width/height задаются инлайн из Python */
}
.color-layer {
    position: absolute;
    top: 0;
    left: 0;
    mix-blend-mode: multiply;
}
.sliders-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 12px;
}
.sliders-table td {
    padding: 6px 8px;
    vertical-align: middle;
}
.sliders-table td:first-child {
    font-weight: 500;
    min-width: 90px;
}
input[type="range"] {
    width: 100%;
}

/* ---------- адаптивность ---------- */
@media (max-width: 600px) {
    body {
        padding: 12px;
    }
    .container, .viewer-container {
        padding: 20px 16px;
        max-width: 100%;
    }
    h2 {
        font-size: 1.4rem;
    }
    button {
        width: 100%;
        padding: 12px;
    }
    fieldset label {
        margin-bottom: 8px;
    }
    .controls-row {
        flex-direction: column;
        align-items: flex-start;
    }
    #viewport {
        max-height: 350px;
    }
}