/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f8f9f7;--surface:#ffffff;--surface-alt:#f1f3ef;
  --text:#1a1f1a;--text-muted:#5a635a;--text-light:#8a948a;
  --accent:#4a7c59;--accent-hover:#3d6a4a;--accent-light:#e8f0ea;
  --warn:#c0392b;--warn-bg:#fdf0ef;--border:#d4dacf;
  --radius:8px;--shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  --font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:var(--font);cursor:pointer}
input,select,textarea{font-family:var(--font);font-size:.95rem}

/* ===== Header ===== */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.header-inner{max-width:1280px;margin:0 auto;padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.logo{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.1rem;color:var(--text)}
.logo:hover{text-decoration:none;color:var(--accent)}
.logo svg{color:var(--accent)}
.site-nav{display:flex;gap:1.5rem}
.site-nav a{color:var(--text-muted);font-size:.9rem;font-weight:500}
.site-nav a:hover{color:var(--accent)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:.35rem;padding:.5rem 1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);font-size:.85rem;font-weight:500;transition:all .15s}
.btn:hover{background:var(--surface-alt);border-color:var(--text-light)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}
.btn-secondary{background:var(--accent-light);color:var(--accent);border-color:var(--accent-light)}
.btn-small{padding:.35rem .7rem;font-size:.8rem}

/* ===== Planner Section ===== */
.planner-section{max-width:1280px;margin:0 auto;padding:2rem 1.5rem 4rem}
.planner-header{text-align:center;margin-bottom:2rem}
.planner-header h1{font-size:2rem;font-weight:800;line-height:1.2;margin-bottom:.5rem}
.subtitle{font-size:1.05rem;color:var(--text-muted);max-width:600px;margin:0 auto}

/* ===== Layout ===== */
.planner-layout{display:grid;grid-template-columns:280px 1fr;gap:1.5rem;align-items:start}

/* ===== Palette Panel ===== */
.palette-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;max-height:calc(100vh - 120px);overflow-y:auto;position:sticky;top:70px}
.panel-section{margin-bottom:1.5rem}
.panel-section h2{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.75rem}
.panel-section h3{font-size:.8rem;color:var(--text-muted);margin:.75rem .5rem .4rem}
.field-row{margin-bottom:.5rem}
.field-row label{display:block;font-size:.8rem;color:var(--text-muted);margin-bottom:.2rem}
.field-row input,.field-row select{width:100%;padding:.4rem .6rem;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text)}
.field-row input:focus,.field-row select:focus{outline:2px solid var(--accent);outline-offset:1px}
.field-row.half{display:inline-block;width:48%}
.field-row.half+.half{margin-left:4%}
.hint{font-size:.78rem;color:var(--text-light);margin:.4rem 0}
.hint.small{font-size:.75rem}

.wall-btns{display:grid;grid-template-columns:1fr 1fr;gap:.4rem;margin-bottom:.5rem}
.wall-btn{padding:.4rem;border:1px solid var(--border);border-radius:6px;background:var(--bg);font-size:.8rem;font-weight:500}
.wall-btn.active,.wall-btn:hover{border-color:var(--accent);background:var(--accent-light);color:var(--accent)}
.feature-opts{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:.4rem}
.feature-btn{padding:.35rem .6rem;border:1px solid var(--border);border-radius:6px;background:var(--bg);font-size:.8rem}
.feature-btn.active,.feature-btn:hover{border-color:var(--accent);background:var(--accent-light)}

.furniture-category{margin-bottom:.75rem}
.furniture-list{list-style:none;display:flex;flex-direction:column;gap:.25rem}
.furniture-btn{width:100%;text-align:left;padding:.35rem .6rem;border:1px solid transparent;border-radius:6px;background:var(--bg);font-size:.8rem;color:var(--text);transition:all .15s}
.furniture-btn:hover{background:var(--accent-light);border-color:var(--accent-light);color:var(--accent)}
.add-custom{border-top:1px solid var(--border);padding-top:.75rem;margin-top:.75rem}
.add-custom h3{margin-bottom:.5rem}

/* ===== Canvas Area ===== */
.canvas-area{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.canvas-toolbar{display:flex;align-items:center;justify-content:space-between;padding:.5rem .75rem;background:var(--surface-alt);border-bottom:1px solid var(--border);gap:.5rem;flex-wrap:wrap}
.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.grid-label{font-size:.78rem;color:var(--text-muted)}
.clearance-status{font-size:.78rem;padding:.2rem .5rem;border-radius:4px;font-weight:500}
.clearance-status.ok{background:var(--accent-light);color:var(--accent)}
.clearance-status.warn{background:var(--warn-bg);color:var(--warn)}

.canvas-wrapper{position:relative;overflow:auto;max-height:600px}
#room-canvas{min-width:400px;min-height:350px;display:block;background:#fff}
.canvas-footer{display:flex;gap:1.5rem;padding:.5rem .75rem;border-top:1px solid var(--border);font-size:.78rem;color:var(--text-muted)}

/* ===== Saved Layouts ===== */
.saved-layouts{margin-top:2rem}
.saved-layouts h2{font-size:1.2rem;margin-bottom:1rem}
.saved-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem}
.saved-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem}
.saved-card h3{font-size:.95rem;margin-bottom:.25rem}
.saved-card p{font-size:.8rem;color:var(--text-muted);margin-bottom:.75rem}
.saved-card-actions{display:flex;gap:.4rem}
.empty-state{color:var(--text-light);font-size:.9rem;padding:1rem}

/* ===== Tips Section ===== */
.tips-section{max-width:1280px;margin:0 auto;padding:3rem 1.5rem}
.tips-section h2{font-size:1.4rem;margin-bottom:1.5rem;text-align:center}
.tips-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.25rem}
.tip-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem}
.tip-card h3{font-size:1rem;margin-bottom:.5rem;color:var(--accent)}
.tip-card p{font-size:.9rem;color:var(--text-muted);line-height:1.55}

/* ===== About Section ===== */
.about-section{max-width:1280px;margin:0 auto;padding:3rem 1.5rem 4rem}
.about-section h2{font-size:1.4rem;margin-bottom:1.25rem;text-align:center}
.about-content{max-width:720px;margin:0 auto}
.about-content p{margin-bottom:1rem;font-size:.95rem;color:var(--text-muted);line-height:1.7}
.version-note{font-size:.8rem;color:var(--text-light);border-top:1px solid var(--border);padding-top:.75rem;margin-top:1.5rem}

/* ===== Footer ===== */
.site-footer{background:var(--surface);border-top:1px solid var(--border);padding:1.5rem;margin-top:2rem}
.footer-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.footer-nav{display:flex;gap:1.25rem}
.footer-nav a{font-size:.85rem;color:var(--text-muted)}
.footer-copy{font-size:.8rem;color:var(--text-light)}

/* ===== Canvas SVG Elements ===== */
.wall-line{stroke:var(--text);stroke-width:3;fill:none}
.room-fill{fill:var(--bg)}
.door-arc{fill:none;stroke:var(--accent);stroke-width:2;stroke-dasharray:4 2}
.door-swing{fill:var(--accent-light);fill-opacity:.4;stroke:none}
.window-mark{stroke:var(--accent);stroke-width:2;fill:none}
.furniture-rect{stroke:rgba(0,0,0,.2);stroke-width:1;rx:3}
.furniture-label{font-size:9px;fill:var(--text);text-anchor:middle;pointer-events:none}
.warning-line{stroke:var(--warn);stroke-width:2;stroke-dasharray:6 3}
.warning-label{font-size:8px;fill:var(--warn);text-anchor:middle;pointer-events:none}
.dimension-label{font-size:8px;fill:var(--text-muted);text-anchor:middle}

/* ===== Responsive ===== */
@media(max-width:900px){
  .planner-layout{grid-template-columns:1fr}
  .palette-panel{position:static;max-height:none;display:grid;grid-template-columns:1fr 1fr;gap:1rem}
  .panel-section{margin-bottom:0}
  .furniture-palette{grid-column:1/-1}
}
@media(max-width:600px){
  .header-inner{padding:.6rem 1rem}
  .site-nav{gap:.8rem}
  .site-nav a{font-size:.8rem}
  .planner-header h1{font-size:1.5rem}
  .palette-panel{grid-template-columns:1fr}
  .canvas-toolbar{flex-direction:column;align-items:flex-start}
  .footer-inner{flex-direction:column;align-items:flex-start}
}

/* ===== Print ===== */
@media print{
  .site-header,.site-footer,.palette-panel,.canvas-toolbar,.saved-layouts,.tips-section,.about-section,.site-nav{display:none!important}
  .planner-section{padding:0}
  .canvas-wrapper{overflow:visible}
  #room-canvas{max-width:100%;height:auto}
}

/* ===== Focus Styles ===== */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ===== Scrollbar ===== */
.palette-panel::-webkit-scrollbar{width:6px}
.palette-panel::-webkit-scrollbar-track{background:transparent}
.palette-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

/* ===== Selection ===== */
::selection{background:var(--accent-light);color:var(--text)}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}