/* =========================================
   GIAO DIỆN SOFT NEO-BRUTALISM (PASTEL)
========================================= */
:root {
    --border-soft: 2px solid #2d3142;
    --shadow-soft: 4px 4px 0px rgba(45, 49, 66, 0.8);
    --shadow-soft-hover: 2px 2px 0px rgba(45, 49, 66, 0.8);
    
    --clr-bg: #faf9f6;        
    --clr-surface: #ffffff;   
    --clr-primary: #8fb8ed;   /* Xanh dương nhạt */
    --clr-secondary: #f2cc8f; /* Vàng nhạt */
    --clr-pink: #f4acb7;      /* Hồng nhạt */
    --clr-success: #81b29a;   /* Xanh lá nhạt */
    --clr-text: #2d3142;      
}

.pattern-soft-wrapper {
    max-width: 900px; margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
    color: var(--clr-text); background: var(--clr-bg);
    padding: 25px; border: var(--border-soft); border-radius: 16px;
    box-shadow: var(--shadow-soft);
}
.pattern-soft-wrapper * { box-sizing: border-box; }

/* Header */
.pattern-soft-header {
    background: var(--clr-surface); padding: 20px;
    border: var(--border-soft); border-radius: 12px;
    text-align: center; margin-bottom: 25px; box-shadow: var(--shadow-soft);
}
.pattern-soft-header h2 { margin: 0 0 8px 0; font-size: 1.8rem; font-weight: 800; }
.pattern-soft-header p { margin: 0; font-weight: 500; font-size: 1rem; color: #555;}

/* Bố cục Grid 2 cột */
.pattern-editor-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; }

/* Khu vực Preview */
.pattern-preview-box { display: flex; flex-direction: column; }
.preview-bg {
    width: 100%; aspect-ratio: 1/1;
    border: var(--border-soft); border-radius: 12px;
    box-shadow: inset 3px 3px 10px rgba(0,0,0,0.08); 
    transition: background 0.15s ease;
}

/* Bảng Điều khiển */
.pattern-controls-box {
    background: var(--clr-surface); border: var(--border-soft);
    border-radius: 12px; padding: 25px 20px; box-shadow: var(--shadow-soft);
}
.box-title { margin: 0 0 15px 0; font-size: 1.05rem; font-weight: 800; text-transform: uppercase; border-bottom: 2px dashed #eee; padding-bottom: 8px;}
.separator { height: 20px; }

.control-group { margin-bottom: 15px; }
.label-title { display: block; font-weight: 800; font-size: 0.95rem; margin-bottom: 10px; color: var(--clr-text); }
.label-row { display: flex; justify-content: space-between; font-weight: 700; font-size: 0.9rem; margin-bottom: 10px; color: #555;}
.label-row span { background: #eee; padding: 2px 8px; border-radius: 6px; color: var(--clr-text);}

/* Lưới nút chọn Họa tiết */
.pattern-type-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.type-btn { padding: 10px 5px; font-size: 0.9rem; font-weight: 700; background: var(--clr-bg); color: var(--clr-text); border: var(--border-soft); border-radius: 8px; cursor: pointer; transition: all 0.15s ease; text-align: center;}
.type-btn:hover { background: #eee; transform: translateY(-2px); box-shadow: 2px 2px 0px rgba(45, 49, 66, 0.3); }
.type-btn.active { background: var(--clr-text); color: #fff; }

/* Color Pickers */
.color-picker-row { display: flex; gap: 15px; }
.color-picker-item { flex: 1; display: flex; flex-direction: column; gap: 5px; font-size: 0.85rem; font-weight: 700; color: #555;}
input[type="color"] { -webkit-appearance: none; border: var(--border-soft); border-radius: 8px; width: 100%; height: 45px; padding: 0; cursor: pointer; background: #fff;}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
input[type="color"]::-webkit-color-swatch { border: 1.5px solid var(--clr-text); border-radius: 5px; }

/* Thanh trượt (Slider) */
.soft-slider { -webkit-appearance: none; width: 100%; background: transparent; }
.soft-slider:focus { outline: none; }
.soft-slider::-webkit-slider-runnable-track { width: 100%; height: 10px; cursor: pointer; background: var(--clr-bg); border-radius: 5px; border: 1.5px solid var(--clr-text); }
.soft-slider::-webkit-slider-thumb { height: 22px; width: 22px; border-radius: 50%; background: var(--clr-primary); border: 1.5px solid var(--clr-text); cursor: pointer; -webkit-appearance: none; margin-top: -7px; box-shadow: 2px 2px 0px rgba(0,0,0,0.2); transition: transform 0.1s;}
.soft-slider::-webkit-slider-thumb:active { transform: scale(1.1); }

/* Nút Actions */
.action-btn { padding: 12px; font-size: 0.95rem; font-weight: 700; background: var(--clr-bg); color: var(--clr-text); border: var(--border-soft); border-radius: 10px; box-shadow: 3px 3px 0px rgba(45, 49, 66, 0.3); cursor: pointer; transition: all 0.15s ease; text-align: center;}
.action-btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0px rgba(45, 49, 66, 0.3); }
.btn-success { background: var(--clr-success); box-shadow: var(--shadow-soft); }

.btn-primary-soft { width: 100%; padding: 16px; font-size: 1.05rem; font-weight: 800; background: var(--clr-primary); color: var(--clr-text); border: var(--border-soft); border-radius: 12px; box-shadow: var(--shadow-soft); cursor: pointer; text-transform: uppercase; transition: all 0.15s ease; }
.btn-primary-soft:active { transform: translate(2px, 2px); box-shadow: var(--shadow-soft-hover); }

@media (max-width: 700px) {
    .pattern-editor-grid { grid-template-columns: 1fr; }
}