/* ============ RESET & BASE ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{background:#f8f8f7;color:#111827;font-family:'DM Sans',sans-serif;min-height:100vh;overflow-x:hidden}

/* ============ HEADER ============ */
#site-header{background:#fff;border-bottom:1px solid #e5e7eb;padding:24px 40px;display:flex;align-items:center;gap:32px;flex-wrap:wrap}
.header-brand{display:flex;align-items:baseline;gap:10px;margin-right:auto}
.header-brand .wordmark{font-size:14px;font-weight:700;letter-spacing:5px;color:#374151;text-transform:uppercase}
.header-brand .wordmark-sub{font-size:14px;font-weight:300;letter-spacing:2px;color:#9ca3af;text-transform:lowercase}
.header-project{display:flex;flex-direction:column;gap:3px;text-align:right}
.header-project .project-title{font-size:18px;font-weight:600;color:#111827;letter-spacing:-.01em}
.header-project .project-meta{font-size:12px;color:#6b7280;letter-spacing:.5px}

/* ============ TOOLBAR ============ */
#toolbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid #e5e7eb;padding:12px 40px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.filters{display:flex;gap:6px}
.filters button{background:#fff;border:1px solid #e5e7eb;color:#6b7280;padding:7px 16px;border-radius:8px;font-size:13px;cursor:pointer;font-family:'DM Sans',sans-serif;transition:all .15s;font-weight:500}
.filters button:hover{border-color:#d1d5db;color:#374151;background:#f9fafb}
.filters button.active{background:#111827;border-color:#111827;color:#fff;font-weight:600}
.toolbar-sep{width:1px;height:24px;background:#e5e7eb;margin:0 8px}
.toolbar-tools{display:flex;gap:6px}
.toolbar-tools button{background:#fff;border:1px solid #e5e7eb;color:#6b7280;padding:7px 16px;border-radius:8px;font-size:13px;cursor:pointer;font-family:'DM Sans',sans-serif;transition:all .15s;font-weight:500}
.toolbar-tools button:hover{border-color:#d1d5db;color:#374151;background:#f9fafb}
.toolbar-tools button.active{background:#166534;border-color:#166534;color:#fff}

/* ============ SUMMARY BAR ============ */
#summary-bar{background:#f9fafb;border-bottom:1px solid #e5e7eb;padding:12px 40px;font-size:13px;color:#6b7280;letter-spacing:.3px;display:flex;gap:8px;align-items:center}
#summary-bar .sep{color:#d1d5db}

/* ============ GALLERY ============ */
#gallery{background:#2a2a2e;display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:40px;padding:48px 40px 72px}

/* ============ PANEL CARDS ============ */
.panel-card{cursor:pointer;transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column;align-items:center}
.panel-card:hover{transform:translateY(-4px)}
.panel-card:hover .panel-scaler{box-shadow:0 20px 60px rgba(0,0,0,.5),0 0 40px rgba(255,255,255,.04)}
.panel-card.hidden{display:none}
.panel-scaler{overflow:hidden;border-radius:3px;box-shadow:0 4px 20px rgba(0,0,0,.4);position:relative}
.panel-label{margin-top:16px;text-align:center;max-width:200px}
.panel-name{font-size:14px;font-weight:500;color:#f4f4f5;display:block;line-height:1.3}
.panel-type-badge{font-size:10px;color:#a1a1aa;letter-spacing:1px;display:block;margin-top:5px;text-transform:uppercase}
.panel-number{font-size:10px;color:#4ade80;letter-spacing:3px;display:block;margin-bottom:3px}

/* ============ SHARED PANEL STYLES ============ */
.panel{position:relative;overflow:hidden;transform-origin:top left}
.panel-inner{position:absolute;inset:0;display:flex;flex-direction:column;padding:28px 24px;z-index:1}
.panel .section-badge{font-size:8px;letter-spacing:4px;text-transform:uppercase;opacity:.7}
.panel .panel-title{font-family:'Playfair Display',serif;font-weight:700;text-transform:uppercase;line-height:1.1}
.panel .panel-subtitle{font-family:'Cormorant Garamond',serif;font-weight:300;font-style:italic;line-height:1.3}
.panel .panel-body{font-family:'Source Sans 3',sans-serif;font-weight:300;line-height:1.65;font-size:11px}
.panel .img-placeholder{border:1.5px dashed;border-radius:4px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;opacity:.5;font-size:9px;text-align:center;font-family:'DM Sans',sans-serif;letter-spacing:.5px}
.panel .img-placeholder svg{width:24px;height:24px;opacity:.6}
.panel .gold-line{height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent)}
.panel .credit{font-size:8px;letter-spacing:2px;text-transform:uppercase;opacity:.5;text-align:center}

/* ============ BATCH DIVIDERS ============ */
.batch-divider{width:100%;display:flex;align-items:center;gap:20px;padding:0 40px;margin:16px 0}
.batch-divider::before,.batch-divider::after{content:'';flex:1;height:1px;background:#3f3f46}
.batch-divider span{font-size:12px;font-weight:500;letter-spacing:2px;color:#a1a1aa;text-transform:uppercase;white-space:nowrap}

/* ============ DETAIL OVERLAY ============ */
#detail-overlay{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.92);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .35s ease}
#detail-overlay.open{opacity:1;pointer-events:all}
#detail-viewport{position:relative;display:flex;align-items:center;justify-content:center}
#detail-panel-wrapper{overflow:hidden;border-radius:3px;box-shadow:0 20px 80px rgba(0,0,0,.7);transition:transform .3s ease}
#detail-close{position:fixed;top:20px;right:24px;background:none;border:none;color:#888;font-size:32px;cursor:pointer;z-index:210;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s}
#detail-close:hover{color:#fff;background:rgba(255,255,255,.1)}
#detail-prev,#detail-next{position:fixed;top:50%;transform:translateY(-50%);background:none;border:none;color:#666;font-size:36px;cursor:pointer;z-index:210;width:50px;height:80px;display:flex;align-items:center;justify-content:center;transition:color .2s}
#detail-prev{left:16px}
#detail-next{right:16px}
#detail-prev:hover,#detail-next:hover{color:#166534}
#detail-info{position:fixed;bottom:0;left:0;right:0;background:rgba(0,0,0,.75);backdrop-filter:blur(12px);padding:18px 40px;display:flex;align-items:center;gap:20px;z-index:210;border-top:1px solid rgba(255,255,255,.08)}
#detail-info .info-num{font-size:13px;color:#4ade80;letter-spacing:3px;font-weight:600}
#detail-info .info-title{font-size:18px;font-weight:500;color:#f4f4f5}
#detail-info .info-dims{font-size:13px;color:#71717a;margin-left:auto;letter-spacing:.5px}
#detail-guide-btn{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);color:#a1a1aa;padding:6px 14px;border-radius:6px;font-size:12px;cursor:pointer;font-family:'DM Sans',sans-serif;font-weight:500;transition:all .15s;margin-left:16px}
#detail-guide-btn:hover{background:rgba(255,255,255,.15);color:#e5e7eb}
#detail-guide-btn.active{background:#166534;border-color:#166534;color:#fff}
#detail-download-btn,#detail-pdf-btn{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);color:#a1a1aa;padding:6px 14px;border-radius:6px;font-size:12px;cursor:pointer;font-family:'DM Sans',sans-serif;font-weight:500;transition:all .15s;margin-left:4px;display:flex;align-items:center;gap:6px}
#detail-download-btn:hover,#detail-pdf-btn:hover{background:rgba(255,255,255,.15);color:#e5e7eb}
#detail-download-btn.saving,#detail-pdf-btn.saving{opacity:.5;pointer-events:none}

/* Keyboard hint (shown once) */
#keyboard-hint{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);z-index:220;background:rgba(0,0,0,.8);border:1px solid #333;border-radius:8px;padding:12px 24px;display:flex;gap:24px;font-size:13px;color:#999;pointer-events:none;opacity:0;transition:opacity .4s}
#keyboard-hint.show{opacity:1}
#keyboard-hint kbd{display:inline-block;background:#222;border:1px solid #444;border-radius:4px;padding:2px 8px;font-family:inherit;font-size:12px;color:#ccc;margin:0 3px}

/* ============ CVZ ZONE GUIDES (Designer view) ============ */
.zone-guides{display:none;position:absolute;inset:0;pointer-events:none;z-index:50}
body.show-guides .zone-guides{display:block}
.zone-guide{position:absolute;left:0;right:0;border-top:1px dashed;font-family:'DM Sans',sans-serif;font-size:6px;letter-spacing:1px;padding-left:3px}
.zone-guide.cvz-top{border-color:rgba(0,200,100,.6);color:rgba(0,200,100,.7)}
.zone-guide.cvz-bot{border-color:rgba(0,200,100,.6);color:rgba(0,200,100,.7)}
.zone-guide.eye-level{border-color:rgba(255,200,0,.5);color:rgba(255,200,0,.6)}
.zone-guide.ada{border-color:rgba(100,180,255,.5);color:rgba(100,180,255,.6)}
.zone-guide.secondary{border-color:rgba(255,100,100,.4);color:rgba(255,100,100,.5)}
.zone-fill{position:absolute;left:0;right:0}
.zone-fill.cvz-zone{background:rgba(0,200,100,.04)}

/* ============ SPEC NOTES (Designer view) ============ */
#spec-notes{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.97);border-top:1px solid #e5e7eb;padding:24px 40px;z-index:150;transform:translateY(100%);transition:transform .3s ease;color:#374151;display:flex;gap:32px;flex-wrap:wrap;backdrop-filter:blur(12px);box-shadow:0 -4px 20px rgba(0,0,0,.08)}
#spec-notes.open{transform:translateY(0)}
#spec-notes .spec-col{flex:1;min-width:200px}
#spec-notes .spec-col h3{font-size:12px;color:#166534;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:8px;font-weight:700}
#spec-notes .spec-col p{font-size:13px;line-height:1.6;color:#6b7280}
#spec-notes .spec-col strong{color:#111827;font-weight:600}
#spec-notes-close{position:absolute;top:16px;right:20px;background:none;border:none;color:#9ca3af;font-size:22px;cursor:pointer;transition:color .15s}
#spec-notes-close:hover{color:#374151}

/* ============ HELP POPOVER ============ */
#help-btn{width:26px;height:26px;border-radius:50%;border:1px solid #d1d5db;background:#fff;color:#9ca3af;font-size:13px;font-weight:600;font-family:'DM Sans',sans-serif;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s;margin-left:2px;flex-shrink:0}
#help-btn:hover{border-color:#9ca3af;color:#374151;background:#f9fafb}
#help-popover{position:absolute;top:calc(100% + 10px);left:0;width:320px;background:#fff;border:1px solid #e5e7eb;border-radius:10px;box-shadow:0 12px 40px rgba(0,0,0,.12);padding:20px;z-index:300;opacity:0;pointer-events:none;transform:translateY(-4px);transition:all .2s ease}
#help-popover.open{opacity:1;pointer-events:all;transform:translateY(0)}
#help-popover h3{font-size:14px;font-weight:600;color:#111827;margin-bottom:8px}
#help-popover p{font-size:13px;line-height:1.6;color:#6b7280}

/* ============ FOOTER ============ */
#site-footer{background:#fff;border-top:1px solid #e5e7eb;padding:28px 40px;text-align:center;font-size:12px;letter-spacing:1px;color:#9ca3af}
#site-footer a{color:#6b7280;text-decoration:none}
#site-footer a:hover{color:#166534}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.panel-card{animation:fadeInUp .5s ease both}
.panel-card:nth-child(2){animation-delay:.05s}
.panel-card:nth-child(3){animation-delay:.1s}
.panel-card:nth-child(4){animation-delay:.15s}
.panel-card:nth-child(5){animation-delay:.2s}
.panel-card:nth-child(6){animation-delay:.25s}
.panel-card:nth-child(7){animation-delay:.3s}
.panel-card:nth-child(8){animation-delay:.35s}
.panel-card:nth-child(9){animation-delay:.4s}
.panel-card:nth-child(10){animation-delay:.45s}
.panel-card:nth-child(n+12){animation-delay:.1s}
.panel-card:nth-child(13){animation-delay:.15s}
.panel-card:nth-child(14){animation-delay:.2s}
.panel-card:nth-child(15){animation-delay:.25s}
.panel-card:nth-child(16){animation-delay:.3s}
.panel-card:nth-child(17){animation-delay:.35s}
.panel-card:nth-child(18){animation-delay:.4s}
.panel-card:nth-child(19){animation-delay:.45s}
.panel-card:nth-child(20){animation-delay:.5s}
.panel-card:nth-child(21){animation-delay:.55s}