/* ==========================================================================
   THE BLUEPRINT - MWIT Exercise Form Generator (Ultra-Premium Modern UI)
   ========================================================================== */

:root {
    --primary: #1e3a8a;       /* Deep Navy (MWIT Vibe) */
    --primary-hover: #1d4ed8; /* Electric Blue */
    --primary-light: #eff6ff;
    --success: #10b981;       /* Emerald Green */
    --success-hover: #059669;
    --success-light: #ecfdf5;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --danger-light: #fef2f2;
    --background: #f8fafc;    /* Soft Slate White */
    --card-bg: #ffffff;
    --text-main: #1e293b;     /* Slate Dark */
    --text-muted: #64748b;    /* Cool Grey */
    --border-color: #e2e8f0;  /* Smooth Border */
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 25px -5px rgba(30, 58, 138, 0.05), 0 8px 10px -6px rgba(30, 58, 138, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Kanit', sans-serif;
    max-width: 900px;
    margin: auto;
    padding: 40px 20px;
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1 {
    text-align: center;
    color: var(--primary);
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 35px;
    letter-spacing: -0.5px;
}

/* === MAIN CONTAINER CARD === */
.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

/* === TOP USER INFO BAR === */
.info-summary {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 18px 24px;
    border-radius: var(--radius-md);
    margin-bottom: 30px;
    border-left: 6px solid var(--primary);
    border-top: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.info-summary p { margin: 0; font-size: 15px; color: var(--text-main); }
.info-summary p strong { color: var(--primary); font-weight: 500; }

.btn-edit-info {
    font-family: 'Kanit', sans-serif;
    background-color: #ffffff;
    color: var(--primary);
    border: 1.5px solid var(--border-color);
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.btn-edit-info:hover { 
    border-color: var(--primary); 
    background-color: var(--primary-light);
    transform: translateY(-1px);
}

/* === FORM CONFIGURATIONS === */
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 8px; font-size: 15px; color: var(--text-main); }

input, select {
    font-family: 'Kanit', sans-serif;
    display: block;
    padding: 12px 16px;
    width: 100%;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-sizing: border-box;
    font-size: 15px;
    color: var(--text-main);
    background-color: #ffffff;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.02);
    transition: var(--transition);
}
input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.12);
    background-color: #ffffff;
}
input[readonly] { background-color: #f1f5f9; color: var(--text-muted); cursor: not-allowed; box-shadow: none; border-color: var(--border-color); }

/* === PAGE NAVIGATION PANEL (แถบ สลับ/เพิ่ม/ลบ หน้า) === */
.page-navigation-panel {
    background: #ffffff;
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin: 25px 0;
}
.page-navigation-panel button {
    padding: 8px 16px !important;
    font-size: 14px !important;
    border-radius: var(--radius-sm) !important;
}

/* === PHOTO UPLOAD SLOTS GRID === */
#slots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 22px;
    margin: 30px 0;
}

.slot {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    background: #ffffff;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
}
.slot:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 20px -5px rgba(30, 58, 138, 0.06);
    border-color: #cbd5e1;
}
.slot h3 { margin: 0; font-size: 16px; font-weight: 500; color: var(--primary); border-bottom: 2px solid #f1f5f9; padding-bottom: 10px; }

/* แต่งกรอบ Input File ให้ดูเป็น Dropzone พรีเมียม */
.slot input[type="file"] { 
    font-size: 13px; 
    padding: 14px 10px; 
    background: #f8fafc; 
    border: 2px dashed #cbd5e1; 
    border-radius: var(--radius-sm);
    cursor: pointer; 
    text-align: center;
    transition: var(--transition);
}
.slot input[type="file"]:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

.btn-trigger-crop {
    background-color: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 10px 14px;
    border: 1px solid #bfdbfe;
    border-radius: var(--radius-sm);
    cursor: pointer;
    width: 100%;
    transition: var(--transition);
}
.btn-trigger-crop:hover { 
    background-color: var(--primary); 
    color: white; 
    border-color: var(--primary);
}

/* === BUTTONS SYSTEM === */
.btn-group {
    display: flex;
    justify-content: flex-end;
    gap: 14px;
    margin-top: 35px;
    border-top: 1px solid var(--border-color);
    padding-top: 25px;
}

button {
    font-family: 'Kanit', sans-serif;
    padding: 12px 26px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
button:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
button:active { transform: translateY(0) scale(0.98); }
button:disabled { background-color: #cbd5e1 !important; color: #94a3b8 !important; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ยกเลิกการใช้ first-child/last-child แบบเดาสุ่ม แล้วระบุให้เคลียร์ตามฟังก์ชัน */
button[onclick="executeFormGenerationPipeline()"] { background-color: var(--success); color: white; }
button[onclick="executeFormGenerationPipeline()"]:hover { background-color: var(--success-hover); }

button[onclick="downloadMultiPagePDF()"] { background-color: var(--primary); color: white; }
button[onclick="downloadMultiPagePDF()"]:hover { background-color: var(--primary-hover); }

/* === PREVIEW CANVAS === */
canvas {
    width: 100%;
    margin-top: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

/* === LUXURY MODAL POP-UP & CROP WORKSPACE === */
.modal {
    display: flex;
    position: fixed;
    z-index: 9999;
    left: 0; top: 0; width: 100%; height: 100%;
    background-color: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.25s ease-out;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 460px;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
    animation: slideUp 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.crop-modal-content { max-width: 640px !important; padding: 28px !important; }
.modal-content h2 { margin-top: 0; color: var(--primary); font-size: 1.6rem; font-weight: 600; margin-bottom: 6px; }
.modal-content p { color: var(--text-muted); margin-bottom: 25px; font-size: 14px; }

#submitModalBtn { width: 100%; margin-top: 25px; padding: 14px; font-size: 16px; background-color: var(--primary); color: white; border-radius: var(--radius-sm); }
#submitModalBtn:hover { background-color: var(--primary-hover); }

/* โซนกระดานตัดรูป */
#cropWorkspace {
    position: relative;
    width: 100%;
    height: 380px;
    background-color: #0b0f19;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
}

.crop-bright-box {
    position: absolute;
    top: 50%; left: 50%;
    width: 350px; height: 240px; 
    transform: translate(-50%, -50%);
    border: 2px dashed var(--success);
    box-sizing: border-box;
    box-shadow: 0 0 0 2000px rgba(11, 15, 25, 0.82);
    z-index: 5;
    pointer-events: none;
}

#cropTargetImg, .crop-movable-img {
    position: absolute;
    cursor: grab;
    transform-origin: top left;
    -webkit-user-drag: none;
    user-select: none;
    max-width: none !important;
    z-index: 1;
}
#cropTargetImg:active { cursor: grabbing; }

#cropFaceRing, .crop-movable-ring {
    position: absolute;
    border: 3px solid var(--danger);
    background-color: rgba(239, 68, 68, 0.22);
    box-shadow: 0 0 0 2px rgba(255,255,255,0.5), inset 0 0 8px rgba(239,68,68,0.5);
    border-radius: 50%;
    cursor: move;
    box-sizing: border-box;
    z-index: 10;
}

/* พาเนลควบคุมย่อยในหน้าต่าง Crop */
.crop-control-panel {
    background: #f8fafc;
    padding: 18px;
    border-radius: var(--radius-md);
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    border: 1px solid var(--border-color);
}
.crop-control-item { display: flex; align-items: center; gap: 14px; }
.crop-control-item label { font-size: 14px; font-weight: 500; width: 110px; color: var(--text-main); }

/* ปรับแต่งดีไซน์แถบสไลเดอร์ (Range Input) ให้ดูโมเดิร์นแบบแอป iOS/Android */
.crop-control-item input[type="range"] { 
    flex: 1; 
    height: 6px; 
    background: #cbd5e1; 
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}
.crop-control-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.crop-control-item input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-hover);
}

.crop-face-buttons { display: flex; gap: 12px; margin-left: auto; }
.crop-face-buttons button { padding: 8px 16px; font-size: 13px; width: auto; border-radius: var(--radius-sm); }
.btn-face-add { background: var(--primary-light); color: var(--primary); border: 1px solid #bfdbfe; }
.btn-face-add:hover { background: var(--primary); color: white; }
.btn-face-del { background: var(--danger-light); color: var(--danger); border: 1px solid #fecaca; }
.btn-face-del:hover { background: var(--danger); color: white; }

.crop-modal-footer { margin-top: 18px; }
.btn-crop-save { background-color: var(--success) !important; color: white; width: 100%; padding: 12px; font-size: 15px; border-radius: var(--radius-sm); }
.btn-crop-save:hover { background-color: var(--success-hover) !important; }

/* === ANIMATIONS === */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* === RESPONSIVE DESIGN === */
@media (max-width: 640px) {
    body { padding: 20px 10px; }
    .card { padding: 24px; }
    .info-summary { flex-direction: column; align-items: flex-start; padding: 15px; }
    .btn-edit-info { width: 100%; text-align: center; }
    .page-navigation-panel { flex-direction: column; gap: 15px; align-items: center; }
    .page-navigation-panel div { width: 100%; display: flex; justify-content: space-between; }
    .btn-group { flex-direction: column; }
    button { width: 100%; }
    .crop-bright-box { width: 260px; height: 180px; }
    .crop-control-item { flex-direction: column; align-items: flex-start; gap: 6px; }
    .crop-control-item input[type="range"] { width: 100%; }
    .crop-face-buttons { margin-left: 0; width: 100%; }
    .crop-face-buttons button { flex: 1; }
}
/* ---------- กล่องคำเตือน/ข้อจำกัด ---------- */
.notice-box{
    background: #fff7ed;
    border: 1px solid #fdba74;
    border-radius: 8px;
    padding: 12px 16px;
    margin: 14px 0;
    text-align: left;
}
.notice-box p{ margin: 0 0 6px; font-size: 13.5px; color: #9a3412; }
.notice-box ul{ margin: 0; padding-left: 18px; }
.notice-box li{ font-size: 12.5px; color: #7c2d12; line-height: 1.7; margin-bottom: 4px; }

/* ---------- Custom dropdown (แทน native select) ---------- */
.hf-csel{ position: relative; }
.hf-csel-native{
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}
.hf-csel-trigger{
    font-family: 'Kanit', sans-serif;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    width: 100%;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-sizing: border-box;
    font-size: 15px;
    color: var(--text-main);
    background-color: #ffffff;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.02);
    cursor: pointer;
    text-align: left;
}
.hf-csel-trigger::after{
    content: '';
    width: 8px; height: 8px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    margin-left: 10px;
    flex-shrink: 0;
    transition: transform .15s ease;
}
.hf-csel-trigger.open::after{ transform: rotate(-135deg); }
.hf-csel-trigger:disabled{ opacity: .55; cursor: default; }
.hf-csel-trigger:focus{ outline: none; border-color: var(--primary-hover); box-shadow: 0 0 0 3px rgba(29,78,216,0.15); }

.hf-csel-panel{
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    z-index: 50;
    max-height: 260px;
    overflow-y: auto;
    background: #ffffff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 6px;
}
.hf-csel-panel[hidden]{ display: none; }
.hf-csel-group-label{
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-muted);
    font-weight: 700;
    padding: 8px 10px 4px;
}
.hf-csel-option{
    display: block;
    width: 100%;
    text-align: left;
    border: none;
    background: transparent;
    color: var(--text-main);
    padding: 9px 10px;
    border-radius: 6px;
    font-size: 14px;
    font-family: 'Kanit', sans-serif;
    cursor: pointer;
}
.hf-csel-option:hover{ background: var(--primary-light); }
.hf-csel-option:disabled{ color: var(--text-muted); cursor: default; }