/* PCB Developer Pro - Clean Light UI */
:root {
    --pcb-bg: #faf9f7;
    --pcb-white: #ffffff;
    --pcb-border: #e5e2dc;
    --pcb-border-hover: #d0cdc7;
    --pcb-text: #1a1a1a;
    --pcb-text-mid: #444444;
    --pcb-text-muted: #888888;
    --pcb-accent: #7F54B3;
    --pcb-accent-dark: #6B3FA0;
    --pcb-accent-light: #F3EDFA;
    --pcb-green: #16a34a;
    --pcb-radius: 12px;
    --pcb-radius-sm: 8px;
    --pcb-radius-xs: 6px;
    --pcb-font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.pcb-app {
    max-width: 1200px !important;
    width: 100% !important;
    margin: 0 auto !important;
    padding: 40px 20px !important;
    font-family: var(--pcb-font) !important;
    color: var(--pcb-text);
    background: var(--pcb-bg);
    display: block !important;
    float: none !important;
    overflow: visible !important;
}
.pcb-app *, .pcb-app *::before, .pcb-app *::after { box-sizing: border-box !important; }

/* Header */
.pcb-header { text-align: center; margin-bottom: 36px; }
.pcb-header h2 { font-size: 28px; font-weight: 800; margin: 0 0 8px; color: var(--pcb-text); line-height: 1.3; }
.pcb-header p { font-size: 15px; color: var(--pcb-text-muted); margin: 0; }

/* Main Grid - force 2-col on desktop */
.pcb-main-grid {
    display: grid !important;
    grid-template-columns: 1fr 340px !important;
    gap: 28px !important;
    align-items: start !important;
    width: 100% !important;
}
.pcb-left-col {
    display: flex !important;
    flex-direction: column !important;
    gap: 0 !important;
    min-width: 0 !important;
    overflow: visible !important;
}
.pcb-right-col {
    display: block !important;
    min-width: 0 !important;
    overflow: visible !important;
}

/* Upload Widget */
.pcb-upload-widget { max-width: 100%; margin: 0 0 20px; }
.pcb-dropzone { border: 1.5px dashed var(--pcb-border); border-radius: var(--pcb-radius-sm); padding: 22px 28px; cursor: pointer; transition: all 0.2s ease; background: var(--pcb-white); position: relative; display: flex !important; align-items: center; justify-content: center; gap: 14px; }
.pcb-dropzone:hover, .pcb-dropzone.pcb-drag-over { border-color: var(--pcb-accent); background: var(--pcb-accent-light); }
.pcb-upload-icon { flex-shrink: 0; pointer-events: none; }
.pcb-dropzone-inner { pointer-events: none; text-align: left; }
.pcb-dropzone-title { font-size: 13px; font-weight: 700; color: var(--pcb-text); margin: 0 0 2px; }
.pcb-dropzone-sub { font-size: 11px; color: var(--pcb-text-muted); margin: 0; }
.pcb-dropzone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

/* Progress & Messages */
.pcb-progress { margin-top: 8px; }
.pcb-progress-bar { height: 3px; background: #eee; border-radius: 2px; overflow: hidden; margin-bottom: 6px; }
.pcb-progress-fill { height: 100%; background: var(--pcb-accent); border-radius: 2px; width: 0%; transition: width 0.3s ease; }
.pcb-status-text { font-size: 11px; color: var(--pcb-text-muted); margin: 0; }
.pcb-error { margin-top: 8px; background: #fef2f2; border: 1px solid #fecaca; color: #dc2626; padding: 8px 12px; border-radius: var(--pcb-radius-xs); font-size: 12px; }
.pcb-upload-success { display: flex !important; align-items: center; gap: 6px; margin-top: 8px; padding: 8px 12px; background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: var(--pcb-radius-xs); font-size: 12px; color: var(--pcb-green); font-weight: 600; }
.pcb-remove-btn { margin-left: auto; background: none; border: none; color: #dc2626; cursor: pointer; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 4px; font-family: var(--pcb-font); transition: background 0.15s; }
.pcb-remove-btn:hover { background: #fef2f2; }

/* Section Cards */
.pcb-spec-section {
    background: var(--pcb-white);
    border: 1px solid var(--pcb-border);
    border-radius: var(--pcb-radius);
    padding: 20px 24px;
    margin-bottom: 16px;
    overflow: visible !important;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}
.pcb-section-title { font-size: 14px; font-weight: 700; margin: 0 0 16px; color: var(--pcb-text); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pcb-readonly-badge { font-size: 10px; font-weight: 600; color: var(--pcb-accent-dark); background: var(--pcb-accent-light); padding: 2px 8px; border-radius: 10px; text-transform: uppercase; letter-spacing: 0.5px; }

/* Board Info (read-only) */
.pcb-board-info { background: #f8faf8; border-color: #d4e8d4; }
.pcb-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pcb-info-item { display: flex; flex-direction: column; gap: 2px; padding: 8px 12px; background: var(--pcb-white); border: 1px solid #e8efe8; border-radius: var(--pcb-radius-xs); }
.pcb-info-label { font-size: 11px; font-weight: 600; color: var(--pcb-text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.pcb-info-value { font-size: 14px; font-weight: 700; color: var(--pcb-text); }

/* PCB Preview */
.pcb-preview-section.pcb-preview-hidden { display: none !important; }
.pcb-preview-section { padding-bottom: 20px; position: relative; }
.pcb-preview-close { position: absolute; top: 14px; right: 18px; background: var(--pcb-white); border: 1px solid var(--pcb-border); color: var(--pcb-text-muted); cursor: pointer; font-size: 13px; font-weight: 600; font-family: var(--pcb-font); line-height: 1; padding: 4px 10px; border-radius: var(--pcb-radius-xs); transition: all 0.15s; z-index: 2; }
.pcb-preview-close:hover { background: #fef2f2; color: #dc2626; border-color: #fecaca; }
.pcb-preview-grid { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 16px; }
.pcb-preview-box { display: flex !important; flex-direction: column; gap: 8px; }
.pcb-preview-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; color: var(--pcb-text-muted); text-align: center; }
.pcb-preview-canvas { background: #1e1e2e; border-radius: var(--pcb-radius-sm); min-height: 140px; max-height: 180px; display: flex !important; align-items: center; justify-content: center; overflow: hidden; border: 1px solid rgba(255, 255, 255, 0.08); }
.pcb-preview-canvas svg { display: block; width: 100%; height: auto; }
.pcb-preview-placeholder { font-size: 12px; color: rgba(200, 200, 220, 0.4); font-weight: 500; }

/* Spec Rows */
.pcb-spec-row {
    display: flex !important;
    align-items: center !important;
    gap: 16px;
    padding: 10px 0;
    border-bottom: 1px solid #f3f2f0;
    visibility: visible !important;
    overflow: visible !important;
}
.pcb-spec-row:last-child { border-bottom: none; padding-bottom: 0; }
.pcb-spec-row:first-child { padding-top: 0; }
.pcb-spec-row > label { font-size: 13px; font-weight: 600; color: var(--pcb-text); min-width: 140px; flex-shrink: 0; }

/* Button Groups - always visible, wrap properly */
.pcb-btn-group {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 6px !important;
    visibility: visible !important;
    overflow: visible !important;
    min-height: 32px;
}
.pcb-opt {
    padding: 6px 12px;
    border: 1px solid var(--pcb-border);
    border-radius: var(--pcb-radius-xs);
    background: var(--pcb-white);
    color: var(--pcb-text-mid);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: var(--pcb-font);
    white-space: nowrap;
    display: inline-flex !important;
    align-items: center;
    visibility: visible !important;
}
.pcb-opt:hover { border-color: var(--pcb-border-hover); background: #f9f8f6; }
.pcb-opt.active { border-color: var(--pcb-text); background: var(--pcb-text); color: #fff; }

/* Mask color buttons */
.pcb-mask-green.active { background: #166534; border-color: #166534; }
.pcb-mask-white.active { background: #e5e5e5; border-color: #aaa; color: #333; }
.pcb-mask-red.active { background: #991b1b; border-color: #991b1b; }
.pcb-mask-blue.active { background: #1e40af; border-color: #1e40af; }
.pcb-mask-black.active { background: #171717; border-color: #171717; }
.pcb-mask-yellow.active { background: #854d0e; border-color: #854d0e; }

/* Dimension Inputs */
.pcb-dim-inputs { display: flex !important; align-items: center; gap: 8px; }
.pcb-dim-inputs input { width: 72px; padding: 7px 10px; border: 1px solid var(--pcb-border); border-radius: var(--pcb-radius-xs); font-size: 13px; font-weight: 500; text-align: center; background: var(--pcb-white); color: var(--pcb-text); font-family: var(--pcb-font); outline: none; }
.pcb-dim-inputs input:focus { border-color: var(--pcb-accent); box-shadow: 0 0 0 2px var(--pcb-accent-light); }
.pcb-dim-inputs span { font-size: 13px; color: var(--pcb-text-muted); }

/* Qty Input */
.pcb-qty-input { width: 80px; padding: 7px 10px; border: 1px solid var(--pcb-border); border-radius: var(--pcb-radius-xs); font-size: 13px; font-weight: 500; text-align: center; background: var(--pcb-white); color: var(--pcb-text); font-family: var(--pcb-font); outline: none; }
.pcb-qty-input:focus { border-color: var(--pcb-accent); box-shadow: 0 0 0 2px var(--pcb-accent-light); }

/* RIGHT COLUMN - Charge Card */
.pcb-charge-card {
    background: var(--pcb-white);
    border: 1px solid var(--pcb-border);
    border-radius: var(--pcb-radius);
    overflow: visible !important;
    position: sticky;
    top: 20px;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}
.pcb-charge-header { display: flex !important; align-items: center; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid var(--pcb-border); }
.pcb-charge-header h3 { margin: 0; font-size: 15px; font-weight: 700; }
.pcb-badge-india { background: var(--pcb-accent); color: #fff; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 20px; }
.pcb-charge-body { padding: 18px; display: block !important; visibility: visible !important; }

/* Price */
.pcb-price-block, .pcb-total-block { margin-bottom: 16px; display: block !important; visibility: visible !important; }
.pcb-price-block h5, .pcb-build-block h5, .pcb-shipping-block h5 { font-size: 13px; font-weight: 700; margin: 0 0 8px; }
.pcb-price-row { display: flex !important; justify-content: space-between; align-items: center; padding: 5px 0; font-size: 13px; color: var(--pcb-text-mid); visibility: visible !important; }
.pcb-price-row span:last-child { font-weight: 600; color: var(--pcb-text); }
.pcb-price-subtotal { border-top: 1px solid var(--pcb-border); padding-top: 8px; margin-top: 4px; }
.pcb-price-subtotal span:last-child { font-size: 15px; font-weight: 800; }
.pcb-price-total { border-top: 2px solid var(--pcb-text); padding-top: 8px; margin-top: 4px; }
.pcb-price-total span:last-child { font-size: 17px; font-weight: 800; }

/* Build Time & Shipping */
.pcb-build-block, .pcb-shipping-block { margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid #f3f2f0; display: block !important; visibility: visible !important; }
.pcb-radio-grid { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 6px; }
.pcb-radio { display: flex !important; align-items: center; gap: 6px; padding: 7px 10px; border: 1px solid var(--pcb-border); border-radius: var(--pcb-radius-xs); font-size: 12px; color: var(--pcb-text-mid); cursor: pointer; transition: all 0.15s ease; visibility: visible !important; }
.pcb-radio:hover { border-color: var(--pcb-border-hover); }
.pcb-radio input { display: none; }
.pcb-radio-dot { width: 12px; height: 12px; border: 2px solid var(--pcb-border); border-radius: 50%; flex-shrink: 0; position: relative; transition: all 0.15s ease; }
.pcb-radio.active .pcb-radio-dot { border-color: var(--pcb-accent); }
.pcb-radio.active .pcb-radio-dot::after { content: ''; position: absolute; top: 1.5px; left: 1.5px; width: 5px; height: 5px; background: var(--pcb-accent); border-radius: 50%; }
.pcb-radio small { color: var(--pcb-text-muted); font-size: 10px; }

/* Cart Button */
.pcb-cart-btn {
    width: 100% !important;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--pcb-accent), var(--pcb-accent-dark));
    border: none;
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    font-family: var(--pcb-font);
    visibility: visible !important;
    opacity: 1;
    border-radius: 0;
}
.pcb-cart-btn:hover:not(:disabled) { opacity: 0.9; }
.pcb-cart-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.pcb-cart-hint { text-align: center; padding: 8px 20px 14px; margin: 0; font-size: 12px; color: var(--pcb-accent-dark); }
.pcb-cart-success { text-align: center; padding: 8px 20px 14px; margin: 0; font-size: 13px; color: var(--pcb-green); font-weight: 600; }
.pcb-cart-success a { color: var(--pcb-green); text-decoration: underline; }

/* Lock Icon */
.pcb-lock-icon { color: var(--pcb-text-muted); vertical-align: middle; margin-left: 2px; opacity: 0.5; }

/* Locked Buttons */
.pcb-locked { cursor: not-allowed !important; opacity: 0.6; position: relative; }
.pcb-locked:not(.active):hover { background: var(--pcb-white) !important; border-color: var(--pcb-border) !important; }
.pcb-locked:hover::after {
    content: 'Please contact sales team';
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a1a;
    color: #fff;
    font-size: 11px;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 5px;
    white-space: nowrap;
    z-index: 100;
    pointer-events: none;
}
.pcb-locked:hover::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: #1a1a1a;
    z-index: 100;
    pointer-events: none;
}
.pcb-locked-input { cursor: not-allowed !important; opacity: 0.7; background: #f5f4f2 !important; position: relative; }
.pcb-locked-group { position: relative; }

/* Locked Popup Overlay - hidden by default, JS shows via inline style */
.pcb-locked-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.45);
    z-index: 999999;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(3px);
}
.pcb-locked-modal {
    background: #fff;
    border-radius: 16px;
    padding: 32px 36px;
    max-width: 380px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    position: relative;
    animation: pcbPopIn 0.2s ease;
}
@keyframes pcbPopIn { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.pcb-locked-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--pcb-text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}
.pcb-locked-close:hover { color: var(--pcb-text); }
.pcb-locked-modal h4 { font-size: 17px; font-weight: 700; margin: 0 0 8px; color: var(--pcb-text); }
.pcb-locked-modal p { font-size: 13px; color: var(--pcb-text-mid); margin: 0 0 18px; line-height: 1.5; }
.pcb-locked-email {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: linear-gradient(135deg, var(--pcb-accent), var(--pcb-accent-dark));
    color: #fff !important;
    text-decoration: none !important;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: opacity 0.2s;
}
.pcb-locked-email:hover { opacity: 0.9; }

/* Responsive - tablet */
@media (max-width: 900px) {
    .pcb-main-grid { grid-template-columns: 1fr !important; }
    .pcb-charge-card { position: static !important; }
    .pcb-right-col { order: -1; }
}
/* Responsive - mobile */
@media (max-width: 600px) {
    .pcb-app { padding: 20px 12px !important; }
    .pcb-header h2 { font-size: 20px; }
    .pcb-upload-widget { max-width: 100%; }
    .pcb-info-grid { grid-template-columns: 1fr !important; }
    .pcb-preview-grid { grid-template-columns: 1fr !important; }
    .pcb-spec-row { flex-direction: column !important; align-items: flex-start !important; gap: 8px; }
    .pcb-spec-row > label { min-width: unset; }
    .pcb-radio-grid { grid-template-columns: 1fr !important; }
    .pcb-charge-body { padding: 14px; }
    .pcb-spec-section { padding: 16px; }
}