/* =========================================
   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 pastel */
    --clr-pink: #f4acb7;      /* Hồng nhạt */
    --clr-text: #2d3142;      
}

.ce-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);
}

.ce-soft-wrapper * { box-sizing: border-box; }

/* Header */
.ce-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);
}
.ce-soft-header h2 { margin: 0 0 8px 0; font-size: 1.8rem; font-weight: 800; }
.ce-soft-header p { margin: 0; font-weight: 500; font-size: 1rem; color: #555;}

/* Upload Area */
.upload-label {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 15px; background: var(--clr-primary); padding: 50px 20px;
    border: 2px dashed var(--clr-text); border-radius: 12px; cursor: pointer; transition: all 0.2s ease;
}
.upload-label:hover { background: #7aa5d6; transform: translateY(-2px); box-shadow: var(--shadow-soft); border-style: solid; }
.upload-icon { font-size: 3.5rem; }
.upload-text { font-size: 1.15rem; font-weight: 700; color: #fff; text-shadow: 1px 1px 0px rgba(0,0,0,0.2);}

/* Layout Preview & Màu chủ đạo */
.preview-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.image-box {
    position: relative;
    background: #e9ecef;
    border: var(--border-soft);
    border-radius: 12px;
    padding: 10px;
    box-shadow: inset 2px 2px 5px rgba(0,0,0,0.08);
    display: flex; align-items: center; justify-content: center;
}
.image-box img {
    max-width: 100%;
    max-height: 250px;
    border-radius: 6px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    object-fit: contain;
}
.btn-change-float {
    position: absolute; top: 10px; right: 10px;
    background: var(--clr-surface); color: var(--clr-text); font-weight: 700; font-size: 0.85rem;
    border: var(--border-soft); border-radius: 8px; padding: 6px 12px; cursor: pointer;
    box-shadow: 2px 2px 0px rgba(0,0,0,0.3); transition: all 0.15s;
}
.btn-change-float:active { transform: translate(2px,2px); box-shadow: 0px 0px 0px; }

.section-title { margin: 0 0 15px 0; font-size: 1.05rem; font-weight: 800; border-bottom: 2px dashed #ccc; padding-bottom: 5px;}

/* Color Cards (Phong cách Thẻ Pantone) */
.color-card {
    background: var(--clr-surface);
    border: var(--border-soft);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex; flex-direction: column;
}
.color-card:hover { transform: translateY(-4px); box-shadow: 6px 6px 0px rgba(45, 49, 66, 0.8); }
.color-card:active { transform: translateY(0px); box-shadow: 2px 2px 0px rgba(45, 49, 66, 0.8); }

.color-preview { width: 100%; height: 100px; } /* Màu sẽ fill vào đây */
.dominant-card .color-preview { height: 180px; } /* Thẻ chủ đạo bự hơn */

.color-info { padding: 12px; text-align: center; display: flex; flex-direction: column; gap: 4px; background: #fff;}
.hex-code { font-family: monospace, system-ui; font-size: 1.1rem; font-weight: 800; color: var(--clr-text); text-transform: uppercase;}
.copy-hint { font-size: 0.75rem; font-weight: 600; color: #888; transition: color 0.2s;}
.color-card:hover .copy-hint { color: var(--clr-primary); }

/* Báo Copy thành công */
.color-card.copied .copy-hint { color: #81b29a; font-weight: 800; }

/* Grid cho các bảng màu phụ */
.palettes-container { display: flex; flex-direction: column; gap: 30px; }
.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}
.palette-grid .color-preview { height: 80px; }

@media (max-width: 700px) {
    .preview-layout { grid-template-columns: 1fr; }
    .dominant-card .color-preview { height: 120px; }
}