/* ==========================================================================
   Image → 3D | Master Design System  |  imageto3dmodel.online
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

/* ── Light-mode tokens ── */
:root {
  --color-bg:               #F7F4EC;
  --color-surface:          #FFFFFF;
  --color-surface-alt:      #EFEBE0;
  --color-ink:              #1B2430;
  --color-ink-soft:         #4A5568;
  --color-brand-blue:       #1B4F91;
  --color-brand-blue-hover: #163F74;
  --color-accent-amber:     #E8933D;
  --color-grid-line:        #C7D3E0;
  --color-success:          #2F9E63;
  --color-error:            #D64545;
  --color-border:           #E2DED0;
  /* Glass */
  --glass-bg:     rgba(255,255,255,0.60);
  --glass-border: rgba(255,255,255,0.40);
  --glass-blur:   14px;
  --glass-radius: 16px;
  /* Signature gradient — exactly 4 uses */
  --gradient-transform: linear-gradient(135deg,var(--color-brand-blue) 0%,var(--color-accent-amber) 100%);
  /* Fonts */
  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  /* Space scale */
  --sp-xs:.25rem; --sp-sm:.5rem;  --sp-md:1rem;   --sp-lg:1.5rem;
  --sp-xl:2rem;   --sp-2xl:3rem;  --sp-3xl:5rem;
  /* Radii */
  --r-sm:6px; --r-md:10px; --r-lg:16px; --r-xl:24px;
  /* Shadows */
  --sh-sm: 0 1px 3px rgba(27,36,48,.08),0 1px 2px rgba(27,36,48,.05);
  --sh-md: 0 4px 12px rgba(27,36,48,.10),0 2px 4px rgba(27,36,48,.06);
  --sh-lg: 0 8px 32px rgba(27,36,48,.13),0 4px 8px rgba(27,36,48,.08);
  --sh-xl: 0 20px 60px rgba(27,36,48,.15),0 8px 16px rgba(27,36,48,.10);
  /* Transitions */
  --t-fast:150ms ease; --t-base:200ms ease; --t-slow:300ms ease;
}

/* ── Dark-mode tokens ── */
[data-theme="dark"] {
  --color-bg:               #10161F;
  --color-surface:          #171F2A;
  --color-surface-alt:      #1E2732;
  --color-ink:              #E9EDF2;
  --color-ink-soft:         #A6B0BD;
  --color-brand-blue:       #5B9BD9;
  --color-brand-blue-hover: #7BB0E3;
  --color-accent-amber:     #F2A65A;
  --color-grid-line:        #24303D;
  --color-success:          #3FBE82;
  --color-error:            #E3675F;
  --color-border:           #263140;
  --glass-bg:     rgba(23,31,42,0.55);
  --glass-border: rgba(255,255,255,0.08);
  --sh-sm: 0 1px 3px rgba(0,0,0,.25);
  --sh-md: 0 4px 12px rgba(0,0,0,.30);
  --sh-lg: 0 8px 32px rgba(0,0,0,.40);
  --sh-xl: 0 20px 60px rgba(0,0,0,.50);
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);font-size:1rem;line-height:1.65;color:var(--color-ink);background:var(--color-bg);transition:background var(--t-base),color var(--t-base);overflow-x:hidden}
img,video{max-width:100%;height:auto;display:block}
a{color:var(--color-brand-blue);text-decoration:none;transition:color var(--t-fast)}
a:hover{color:var(--color-brand-blue-hover)}
ul,ol{list-style:none}
button{cursor:pointer;font-family:inherit;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:inherit}

/* ── Typography ── */
h1,h2,h3,h4,h5,h6{font-family:var(--font-sans);font-weight:700;line-height:1.25;color:var(--color-ink)}
h1{font-size:clamp(2rem,4vw,2.5rem)}
h2{font-size:1.75rem;font-weight:600}
h3{font-size:1.25rem;font-weight:600}
h4{font-size:1.1rem;font-weight:600}
p{color:var(--color-ink-soft)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.caption{font-size:.875rem;color:var(--color-ink-soft)}

/* ── Blueprint grid ── */
.blueprint-grid{position:relative}
.blueprint-grid::before{
  content:'';position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(var(--color-grid-line) 1px,transparent 1px),
    linear-gradient(90deg,var(--color-grid-line) 1px,transparent 1px);
  background-size:32px 32px;opacity:.18;
}
@media(prefers-reduced-motion:no-preference){.blueprint-grid::before{animation:gridPan 60s linear infinite}}
@keyframes gridPan{from{background-position:0 0}to{background-position:32px 32px}}

/* ── Layout ── */
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 var(--sp-lg)}
.section{padding:var(--sp-3xl) 0}
.section-header{text-align:center;margin-bottom:var(--sp-2xl)}
.section-header h2{margin-bottom:var(--sp-sm)}
.section-header p{font-size:1.05rem;max-width:56ch;margin:0 auto}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:var(--sp-sm);padding:.625rem 1.25rem;border-radius:var(--r-md);font-size:.9375rem;font-weight:600;transition:all var(--t-fast);white-space:nowrap;line-height:1.4}
.btn-primary{background:var(--color-brand-blue);color:#fff;box-shadow:0 2px 6px rgba(27,79,145,.30)}
.btn-primary:hover{background:var(--gradient-transform);color:#fff;box-shadow:0 4px 14px rgba(27,79,145,.40);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:var(--color-surface);color:var(--color-brand-blue);border:1.5px solid var(--color-border)}
.btn-secondary:hover{background:var(--color-surface-alt);border-color:var(--color-brand-blue)}
.btn-ghost{color:var(--color-brand-blue);padding:.5rem .75rem}
.btn-ghost:hover{background:var(--color-surface-alt);border-radius:var(--r-sm)}
.btn-lg{padding:.875rem 1.75rem;font-size:1rem}
.btn-sm{padding:.375rem .875rem;font-size:.875rem}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ── Badges ── */
.badge{display:inline-flex;align-items:center;gap:4px;padding:.2rem .55rem;border-radius:20px;font-size:.75rem;font-weight:600;letter-spacing:.02em}
.badge-ai{background:rgba(27,79,145,.12);color:var(--color-brand-blue)}
.badge-free{background:rgba(47,158,99,.12);color:var(--color-success)}
.badge-amber{background:rgba(232,147,61,.15);color:var(--color-accent-amber)}
[data-theme="dark"] .badge-ai{background:rgba(91,155,217,.18)}
[data-theme="dark"] .badge-free{background:rgba(63,190,130,.18)}
[data-theme="dark"] .badge-amber{background:rgba(242,166,90,.18)}

/* ── Header ── */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;
  display:flex;align-items:center;
  transition:background var(--t-base),box-shadow var(--t-base),backdrop-filter var(--t-base);
  border-bottom:1px solid transparent;
}
.site-header:not(.scrolled){background:var(--color-bg)}
.site-header.scrolled{
  background:var(--glass-bg);
  backdrop-filter:blur(var(--glass-blur));
  -webkit-backdrop-filter:blur(var(--glass-blur));
  border-bottom-color:var(--glass-border);
  box-shadow:var(--sh-md);
}
.header-inner{display:flex;align-items:center;gap:var(--sp-xl);width:100%;max-width:1180px;margin:0 auto;padding:0 var(--sp-lg)}
/* Logo */
.site-logo{display:flex;align-items:center;gap:var(--sp-sm);font-size:1.05rem;font-weight:700;color:var(--color-ink);text-decoration:none;white-space:nowrap;flex-shrink:0}
.site-logo:hover{text-decoration:none;color:var(--color-ink)}
.logo-mark{width:34px;height:34px;background:var(--color-brand-blue);border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:700;font-family:var(--font-mono)}
.arrow-glyph{color:var(--color-brand-blue);margin:0 2px}
.three-d{color:var(--color-accent-amber)}
/* Nav */
.primary-nav{display:flex;align-items:center;gap:4px;flex:1}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:4px;padding:.5rem .75rem;border-radius:var(--r-sm);font-size:.9375rem;font-weight:500;color:var(--color-ink-soft);transition:all var(--t-fast)}
.nav-link:hover{color:var(--color-ink);background:var(--color-surface-alt)}
.nav-link .chevron{font-size:.7rem;transition:transform var(--t-fast);display:inline-block}
.nav-item:hover .chevron{transform:rotate(180deg)}
/* Tools dropdown */
.tools-dropdown{
  position:absolute;top:calc(100% + 8px);left:-16px;width:500px;
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--r-lg);box-shadow:var(--sh-xl);padding:var(--sp-md);
  display:grid;grid-template-columns:1fr 1fr;gap:4px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all var(--t-base);pointer-events:none;z-index:200;
}
.nav-item:hover .tools-dropdown{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.dropdown-item{display:flex;align-items:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);border-radius:var(--r-md);transition:background var(--t-fast);text-decoration:none}
.dropdown-item:hover{background:var(--color-surface-alt)}
.dropdown-icon{width:32px;height:32px;border-radius:var(--r-sm);background:var(--color-surface-alt);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.dropdown-text strong{display:block;font-size:.875rem;font-weight:600;color:var(--color-ink)}
.dropdown-text span{font-size:.78rem;color:var(--color-ink-soft);line-height:1.3}
/* Header right */
.header-right{display:flex;align-items:center;gap:var(--sp-sm);flex-shrink:0}
.no-signup-badge{font-size:.78rem;font-weight:600;color:var(--color-success);background:rgba(47,158,99,.10);padding:.25rem .6rem;border-radius:20px;border:1px solid rgba(47,158,99,.20);white-space:nowrap}
.theme-toggle{width:36px;height:36px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;color:var(--color-ink-soft);transition:all var(--t-fast);font-size:1.1rem;border:1.5px solid var(--color-border)}
.theme-toggle:hover{background:var(--color-surface-alt);color:var(--color-ink)}
/* Hamburger */
.hamburger{display:none;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:var(--r-sm);transition:background var(--t-fast)}
.hamburger:hover{background:var(--color-surface-alt)}
.hamburger span{display:block;width:22px;height:2px;background:var(--color-ink);border-radius:2px;transition:all var(--t-base)}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* Mobile menu */
.mobile-menu{position:fixed;top:0;right:0;width:min(360px,100vw);height:100dvh;background:var(--color-surface);z-index:999;padding:var(--sp-xl) var(--sp-lg);overflow-y:auto;transform:translateX(100%);transition:transform 300ms cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;gap:var(--sp-lg)}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:998;opacity:0;visibility:hidden;transition:all var(--t-base)}
.mobile-menu-overlay.open{opacity:1;visibility:visible}
.mobile-menu-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:var(--sp-lg);border-bottom:1px solid var(--color-border)}
.mobile-menu-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--r-sm);font-size:1.2rem;color:var(--color-ink-soft)}
.mobile-menu-close:hover{background:var(--color-surface-alt)}
.mobile-nav-section h4{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--color-ink-soft);margin-bottom:var(--sp-sm)}
.mobile-nav-list{display:flex;flex-direction:column;gap:2px}
.mobile-nav-link{display:flex;align-items:center;gap:var(--sp-sm);padding:.6rem .75rem;border-radius:var(--r-sm);color:var(--color-ink);font-size:.9375rem;font-weight:500;transition:background var(--t-fast)}
.mobile-nav-link:hover{background:var(--color-surface-alt);color:var(--color-ink)}
.mobile-nav-icon{font-size:1.05rem;width:24px;text-align:center}

/* ── Hero ── */
.hero{min-height:100svh;padding-top:64px;display:flex;align-items:center;position:relative;overflow:hidden}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-3xl);align-items:center;padding:var(--sp-3xl) 0}
.hero-content{display:flex;flex-direction:column;gap:var(--sp-lg)}
.hero-eyebrow{display:inline-flex;align-items:center;gap:var(--sp-sm);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--color-brand-blue)}
.hero-eyebrow::before{content:'';width:20px;height:2px;background:var(--color-brand-blue);border-radius:1px}
.hero h1{font-size:clamp(2.2rem,5vw,3rem);font-weight:700;line-height:1.15}
.hero h1 em{font-style:normal;color:var(--color-brand-blue)}
.hero-subhead{font-size:1.125rem;color:var(--color-ink-soft);line-height:1.6}
.hero-reassurance{display:flex;flex-wrap:wrap;gap:var(--sp-md)}
.reassurance-item{display:flex;align-items:center;gap:6px;font-size:.875rem;font-weight:500;color:var(--color-ink-soft)}
.reassurance-item .icon{width:22px;height:22px;border-radius:50%;background:rgba(47,158,99,.12);color:var(--color-success);display:flex;align-items:center;justify-content:center;font-size:.75rem;flex-shrink:0}
/* Hero drop zone */
.hero-visual{position:relative}
.hero-dropzone{
  background:var(--color-surface);border:2.5px dashed var(--color-border);
  border-radius:var(--r-xl);padding:var(--sp-2xl);text-align:center;
  cursor:pointer;transition:all var(--t-fast);position:relative;overflow:hidden;
  min-height:340px;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:var(--sp-md);
}
.hero-dropzone:hover,.hero-dropzone.drag-over{border-color:var(--color-accent-amber);border-style:solid;box-shadow:0 0 0 4px rgba(232,147,61,.15),var(--sh-lg)}
@keyframes amberPulse{0%,100%{box-shadow:0 0 0 0 rgba(232,147,61,.25)}50%{box-shadow:0 0 0 10px rgba(232,147,61,.06)}}
.hero-dropzone.drag-over{animation:amberPulse 150ms ease forwards}
.dropzone-icon{width:72px;height:72px;background:var(--color-surface-alt);border-radius:var(--r-lg);display:flex;align-items:center;justify-content:center;font-size:2.2rem;transition:transform var(--t-base)}
.hero-dropzone:hover .dropzone-icon{transform:scale(1.06) translateY(-2px)}
.dropzone-label{font-size:1.05rem;font-weight:600;color:var(--color-ink)}
.dropzone-sublabel{font-size:.875rem;color:var(--color-ink-soft)}
.dropzone-formats{display:flex;gap:var(--sp-sm);flex-wrap:wrap;justify-content:center}
.format-chip{padding:.2rem .6rem;background:var(--color-surface-alt);border:1px solid var(--color-border);border-radius:20px;font-size:.75rem;font-weight:600;font-family:var(--font-mono);color:var(--color-ink-soft)}
.hero-dropzone input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
/* Hero glow — allowed gradient use #1 */
.hero-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:500px;height:500px;background:radial-gradient(circle,rgba(27,79,145,.08) 0%,rgba(232,147,61,.05) 60%,transparent 70%);pointer-events:none;z-index:0}
/* Hero animate */
.hero-animate{opacity:0;transform:translateY(12px);animation:heroIn 400ms ease forwards}
@keyframes heroIn{to{opacity:1;transform:translateY(0)}}

/* ── Reassurance strip ── */
.reassurance-strip{background:var(--color-surface);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);padding:var(--sp-xl) 0}
.reassurance-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-lg);text-align:center}
.reassurance-fact strong{display:block;font-family:var(--font-mono);font-size:1.5rem;font-weight:400;font-variant-numeric:tabular-nums;color:var(--color-brand-blue);margin-bottom:4px}
.reassurance-fact p{font-size:.875rem;color:var(--color-ink-soft);margin:0}

/* ── How it works ── */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-xl);position:relative}
.steps-grid::before{content:'';position:absolute;top:36px;left:calc(16.66% + 24px);right:calc(16.66% + 24px);height:2px;background:linear-gradient(90deg,var(--color-brand-blue),var(--color-accent-amber));opacity:.3}
.step-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--sp-md);opacity:0;transform:translateY(20px);transition:opacity 350ms ease,transform 350ms ease}
.step-card.visible{opacity:1;transform:translateY(0)}
.step-number{width:72px;height:72px;border-radius:50%;background:var(--color-surface);border:2px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0;position:relative;box-shadow:var(--sh-sm)}
.step-num-label{position:absolute;top:-8px;right:-8px;width:22px;height:22px;background:var(--color-brand-blue);color:#fff;border-radius:50%;font-size:.7rem;font-weight:700;display:flex;align-items:center;justify-content:center}
.step-card h3{font-size:1.1rem}
.step-card p{font-size:.9rem}

/* ── Gallery ── */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--sp-lg)}
.gallery-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);overflow:hidden;cursor:pointer;transition:transform var(--t-fast),box-shadow var(--t-fast)}
.gallery-item:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.gallery-preview{height:200px;background:var(--color-surface-alt);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;font-size:4rem}
.gallery-before,.gallery-after{width:50%;height:100%;display:flex;align-items:center;justify-content:center;font-size:2.5rem;transition:transform 4s ease}
.gallery-before{background:var(--color-surface-alt);border-right:2px solid var(--color-border)}
.gallery-after{background:linear-gradient(135deg,rgba(27,79,145,.08),rgba(232,147,61,.08))}
.gallery-item:hover .gallery-after{transform:rotate(8deg) scale(1.05)}
.gallery-divider-label{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--color-accent-amber);color:#fff;font-size:.65rem;font-weight:700;padding:.15rem .4rem;border-radius:4px}
.gallery-meta{padding:var(--sp-sm) var(--sp-md);border-top:1px solid var(--color-border)}
.gallery-meta strong{font-size:.875rem;display:block;color:var(--color-ink)}
.gallery-meta span{font-size:.78rem;color:var(--color-ink-soft)}

/* ── Tools grid ── */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(195px,1fr));gap:var(--sp-lg)}
.tool-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);padding:var(--sp-lg);display:flex;flex-direction:column;gap:var(--sp-sm);transition:transform var(--t-fast),box-shadow var(--t-fast),border-color var(--t-fast);text-decoration:none;color:inherit}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--color-brand-blue);color:inherit}
.tool-card-icon{width:48px;height:48px;border-radius:var(--r-md);background:var(--color-surface-alt);display:flex;align-items:center;justify-content:center;font-size:1.5rem;transition:transform var(--t-fast)}
.tool-card:hover .tool-card-icon{transform:scale(1.08)}
.tool-card-badges{display:flex;gap:4px;flex-wrap:wrap;margin-top:2px}
.tool-card h3{font-size:.9375rem;margin-top:4px}
.tool-card p{font-size:.8125rem}
.tool-card-arrow{font-size:.8rem;color:var(--color-brand-blue);margin-top:auto;font-weight:600;opacity:0;transition:opacity var(--t-fast),transform var(--t-fast)}
.tool-card:hover .tool-card-arrow{opacity:1;transform:translateX(3px)}

/* ── Comparison table ── */
.cmp-wrap{overflow-x:auto}
.comparison-table{width:100%;border-collapse:collapse;background:var(--color-surface);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md)}
.comparison-table th{background:var(--color-surface-alt);padding:var(--sp-md) var(--sp-lg);text-align:left;font-size:.875rem;font-weight:700;color:var(--color-ink-soft);text-transform:uppercase;letter-spacing:.05em;border-bottom:2px solid var(--color-border)}
.comparison-table th.col-us{color:var(--color-brand-blue)}
.comparison-table td{padding:var(--sp-md) var(--sp-lg);font-size:.9375rem;border-bottom:1px solid var(--color-border);transition:background var(--t-fast);vertical-align:middle}
.comparison-table tr:last-child td{border-bottom:none}
.comparison-table tr:hover td{background:var(--color-surface-alt)}
.comparison-table td.row-label{font-weight:600;color:var(--color-ink)}
.comparison-table td.col-us{color:var(--color-success);font-weight:600}
.cmp-no{color:var(--color-error)}.cmp-yes{color:var(--color-success)}

/* ── FAQ ── */
.faq-list{display:flex;flex-direction:column;gap:var(--sp-sm)}
.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-md);overflow:hidden;transition:border-color var(--t-fast)}
.faq-item.open{border-color:var(--color-brand-blue)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:var(--sp-md) var(--sp-lg);text-align:left;font-size:1rem;font-weight:600;color:var(--color-ink);cursor:pointer;transition:background var(--t-fast);gap:var(--sp-md)}
.faq-question:hover{background:var(--color-surface-alt)}
.faq-chevron{width:20px;height:20px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--color-ink-soft);font-size:.75rem;transition:transform 200ms ease}
.faq-item.open .faq-chevron{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 200ms ease}
.faq-answer-inner{padding:0 var(--sp-lg) var(--sp-md);font-size:.9375rem;color:var(--color-ink-soft);line-height:1.7}
.faq-item.open .faq-answer{max-height:600px}

/* ── Blog teasers ── */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--sp-lg)}
.blog-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);overflow:hidden;transition:transform var(--t-fast),box-shadow var(--t-fast);text-decoration:none;color:inherit;display:flex;flex-direction:column}
.blog-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);color:inherit}
.blog-card-thumb{height:160px;background:var(--color-surface-alt);display:flex;align-items:center;justify-content:center;font-size:3rem;position:relative;overflow:hidden}
.blog-card-body{padding:var(--sp-md) var(--sp-lg);display:flex;flex-direction:column;gap:var(--sp-sm);flex:1}
.blog-card-tag{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-brand-blue)}
.blog-card h3{font-size:1rem;line-height:1.4;color:var(--color-ink)}
.blog-card p{font-size:.875rem;flex:1}
.blog-card-meta{font-size:.78rem;color:var(--color-ink-soft);padding-top:var(--sp-sm);border-top:1px solid var(--color-border);margin-top:auto}

/* ── Footer ── */
.site-footer{background:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--sp-3xl) 0 var(--sp-xl)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--sp-2xl);margin-bottom:var(--sp-2xl)}
.footer-brand{display:flex;flex-direction:column;gap:var(--sp-md)}
.footer-brand-desc{font-size:.875rem;color:var(--color-ink-soft);line-height:1.6}
.footer-col h4{font-size:.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--color-ink-soft);margin-bottom:var(--sp-md)}
.footer-links{display:flex;flex-direction:column;gap:6px}
.footer-links a{font-size:.875rem;color:var(--color-ink-soft);transition:color var(--t-fast)}
.footer-links a:hover{color:var(--color-brand-blue)}
.footer-bottom{padding-top:var(--sp-lg);border-top:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--sp-md)}
.footer-bottom p{font-size:.8125rem;color:var(--color-ink-soft);margin:0}

/* ── Tool Page ── */
.page-header{padding-top:80px;padding-bottom:var(--sp-xl);border-bottom:1px solid var(--color-border)}
.breadcrumb{display:flex;align-items:center;gap:var(--sp-sm);font-size:.875rem;color:var(--color-ink-soft);margin-bottom:var(--sp-lg);flex-wrap:wrap}
.breadcrumb a{color:var(--color-ink-soft)}.breadcrumb a:hover{color:var(--color-brand-blue)}
.breadcrumb-sep{color:var(--color-grid-line)}
.breadcrumb-current{color:var(--color-ink);font-weight:500}
.page-header-content{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--sp-xl);flex-wrap:wrap}
.page-header h1{font-size:clamp(1.75rem,3.5vw,2.25rem);margin-bottom:var(--sp-sm)}
.page-header-intro{font-size:1.05rem;color:var(--color-ink-soft);max-width:60ch}
.page-header-badges{display:flex;gap:var(--sp-sm);flex-wrap:wrap;flex-shrink:0;align-items:flex-start}
/* Mode toggle */
.mode-toggle{display:flex;background:var(--color-surface-alt);border-radius:var(--r-md);padding:4px;gap:4px;border:1px solid var(--color-border);margin-bottom:var(--sp-lg)}
.mode-tab{flex:1;padding:.5rem 1rem;border-radius:calc(var(--r-md) - 2px);font-size:.9rem;font-weight:600;color:var(--color-ink-soft);transition:all var(--t-fast);text-align:center;cursor:pointer}
.mode-tab.active{background:var(--color-surface);color:var(--color-brand-blue);box-shadow:var(--sh-sm)}
.mode-tab:hover:not(.active){background:rgba(255,255,255,.5)}
.mode-hint{font-size:.8125rem;color:var(--color-ink-soft);display:flex;align-items:center;gap:var(--sp-sm);padding:var(--sp-sm) var(--sp-md);background:var(--color-surface-alt);border-radius:var(--r-sm);margin-bottom:var(--sp-lg);border-left:3px solid var(--color-brand-blue)}
/* Tool widget */
.tool-widget{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-xl);margin-bottom:var(--sp-2xl)}
.upload-zone{background:var(--color-surface);border:2px dashed var(--color-border);border-radius:var(--r-lg);padding:var(--sp-xl);text-align:center;cursor:pointer;transition:all var(--t-fast);position:relative;min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-md)}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--color-accent-amber);border-style:solid;background:rgba(232,147,61,.03);box-shadow:0 0 0 4px rgba(232,147,61,.10)}
.upload-zone input[type="file"]{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}
.upload-icon{font-size:2.5rem}
.upload-label{font-size:1rem;font-weight:600;color:var(--color-ink)}
.upload-sublabel{font-size:.875rem;color:var(--color-ink-soft)}
.upload-preview-img{max-width:100%;max-height:200px;border-radius:var(--r-md);object-fit:contain}
/* Preview panel */
.preview-panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);overflow:hidden;position:relative;min-height:280px;display:flex;align-items:center;justify-content:center}
.canvas-placeholder{text-align:center;color:var(--color-ink-soft);display:flex;flex-direction:column;align-items:center;gap:var(--sp-sm);padding:var(--sp-xl)}
.canvas-placeholder .ph-icon{font-size:2.5rem;opacity:.3}
#three-canvas{width:100%;height:100%;display:block}
/* Floating toolbar — glass allowed here */
.canvas-toolbar{position:absolute;bottom:var(--sp-md);left:50%;transform:translateX(-50%);display:none;gap:4px;padding:6px;background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--glass-radius);box-shadow:var(--sh-lg);z-index:10}
.canvas-toolbar.visible{display:flex}
.canvas-tb-btn{width:32px;height:32px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;font-size:.875rem;color:var(--color-ink-soft);transition:all var(--t-fast);cursor:pointer}
.canvas-tb-btn:hover{background:var(--color-surface-alt);color:var(--color-ink)}
.canvas-tb-btn.active{background:var(--color-brand-blue);color:#fff}
/* Convert controls */
.convert-controls{margin-top:var(--sp-md);display:flex;align-items:center;gap:var(--sp-md);flex-wrap:wrap}
.progress-wrap{flex:1;min-width:160px}
.progress-label{display:flex;justify-content:space-between;margin-bottom:6px;font-size:.8125rem;color:var(--color-ink-soft)}
.progress-bar{height:6px;background:var(--color-surface-alt);border-radius:99px;overflow:hidden}
.progress-fill{height:100%;width:0%;background:var(--gradient-transform);border-radius:99px;transition:width 300ms ease} /* gradient use #2 */
/* Result panel */
.result-panel{background:var(--color-surface);border:2px solid var(--color-success);border-radius:var(--r-lg);overflow:hidden;display:none;animation:resultReveal 250ms ease forwards}
@keyframes resultReveal{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}
.result-panel.visible{display:block}
.result-panel-header{padding:var(--sp-md) var(--sp-lg);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--color-border);flex-wrap:wrap;gap:var(--sp-sm);background:rgba(47,158,99,.06)}
.result-panel-header h3{font-size:1rem;margin:0;color:var(--color-success)}
.export-buttons{display:flex;gap:var(--sp-sm);flex-wrap:wrap}
.export-btn{display:inline-flex;align-items:center;gap:6px;padding:.4rem .9rem;background:var(--color-surface-alt);border:1.5px solid var(--color-border);border-radius:var(--r-sm);font-size:.8125rem;font-weight:700;font-family:var(--font-mono);color:var(--color-ink);transition:all var(--t-fast);cursor:pointer}
.export-btn:hover{background:var(--color-brand-blue);border-color:var(--color-brand-blue);color:#fff}
.result-viewer{height:320px;background:var(--color-surface-alt);position:relative}
.result-stats{padding:var(--sp-sm) var(--sp-lg);display:flex;gap:var(--sp-xl);flex-wrap:wrap;border-top:1px solid var(--color-border)}
.result-stat{display:flex;flex-direction:column}
.result-stat-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--color-ink-soft)}
.result-stat-value{font-family:var(--font-mono);font-size:1rem;font-variant-numeric:tabular-nums;color:var(--color-ink);font-weight:500}
/* Tool content sections */
.tool-section{padding:var(--sp-2xl) 0;border-top:1px solid var(--color-border)}
.tool-section h2{margin-bottom:var(--sp-md)}
.tool-section > .container > p{margin-bottom:var(--sp-md);line-height:1.75}
.numbered-list{counter-reset:steps;display:flex;flex-direction:column;gap:var(--sp-md)}
.numbered-list li{counter-increment:steps;display:flex;gap:var(--sp-md);align-items:flex-start;color:var(--color-ink-soft);line-height:1.65}
.numbered-list li::before{content:counter(steps);min-width:28px;height:28px;border-radius:50%;background:var(--color-brand-blue);color:#fff;font-size:.8rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.numbered-list li strong{color:var(--color-ink)}
.bullet-list{display:flex;flex-direction:column;gap:var(--sp-sm)}
.bullet-list li{display:flex;gap:var(--sp-sm);align-items:flex-start;color:var(--color-ink-soft);font-size:.9375rem;line-height:1.65}
.bullet-list li::before{content:'▸';color:var(--color-accent-amber);flex-shrink:0;margin-top:2px}
.mode-cmp{width:100%;border-collapse:collapse;font-size:.9rem;border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-sm)}
.mode-cmp th{background:var(--color-surface-alt);padding:var(--sp-sm) var(--sp-md);text-align:left;font-weight:600;border:1px solid var(--color-border)}
.mode-cmp td{padding:var(--sp-sm) var(--sp-md);border:1px solid var(--color-border);color:var(--color-ink-soft);vertical-align:top}
/* Related tools */
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--sp-md)}
/* Sticky mobile CTA */
.sticky-cta-bar{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--sp-md) var(--sp-lg);z-index:100;justify-content:center;gap:var(--sp-md);align-items:center;box-shadow:0 -4px 16px rgba(0,0,0,.08)}

/* ── Policy / static pages ── */
.prose-page{padding-top:100px;padding-bottom:var(--sp-3xl)}
.prose-content{max-width:72ch;margin:0 auto}
.prose-content h2{margin-top:var(--sp-2xl);margin-bottom:var(--sp-md);padding-bottom:var(--sp-sm);border-bottom:1px solid var(--color-border)}
.prose-content h3{margin-top:var(--sp-xl);margin-bottom:var(--sp-sm)}
.prose-content p{margin-bottom:var(--sp-md);line-height:1.75}
.prose-content ul{list-style:disc;padding-left:var(--sp-xl);margin-bottom:var(--sp-md)}
.prose-content ul li{margin-bottom:var(--sp-xs);color:var(--color-ink-soft)}
.prose-content strong{color:var(--color-ink)}
.policy-meta{font-size:.875rem;color:var(--color-ink-soft);padding:var(--sp-md) var(--sp-lg);background:var(--color-surface-alt);border-radius:var(--r-md);margin-bottom:var(--sp-xl);border-left:3px solid var(--color-brand-blue)}
/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-3xl);align-items:start}
.contact-form{display:flex;flex-direction:column;gap:var(--sp-md)}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:.875rem;font-weight:600;color:var(--color-ink)}
.form-control{width:100%;padding:.625rem .875rem;background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--r-md);color:var(--color-ink);transition:border-color var(--t-fast),box-shadow var(--t-fast);font-size:.9375rem}
.form-control:focus{outline:none;border-color:var(--color-brand-blue);box-shadow:0 0 0 3px rgba(27,79,145,.12)}
textarea.form-control{resize:vertical;min-height:140px}

/* ── Admin Panel ── */
.admin-wrap{min-height:100vh;background:var(--color-bg)}
.admin-layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.admin-sidebar{background:var(--color-surface);border-right:1px solid var(--color-border);padding:var(--sp-lg);display:flex;flex-direction:column;gap:4px;padding-top:80px}
.admin-sidebar h4{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--color-ink-soft);padding:var(--sp-sm) var(--sp-md) 4px;margin-top:var(--sp-sm)}
.admin-nav-item{display:flex;align-items:center;gap:var(--sp-sm);padding:.5rem .75rem;border-radius:var(--r-sm);font-size:.875rem;font-weight:500;color:var(--color-ink-soft);cursor:pointer;transition:all var(--t-fast);text-decoration:none}
.admin-nav-item:hover,.admin-nav-item.active{background:var(--color-surface-alt);color:var(--color-brand-blue)}
.admin-main{padding:var(--sp-xl);padding-top:80px;overflow-y:auto}
.admin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sp-xl);flex-wrap:wrap;gap:var(--sp-md)}
.admin-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);padding:var(--sp-lg);margin-bottom:var(--sp-lg)}
.admin-card h3{font-size:1rem;margin-bottom:var(--sp-md);padding-bottom:var(--sp-sm);border-bottom:1px solid var(--color-border)}
.kill-switch-row{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-sm) 0;border-bottom:1px solid var(--color-border);gap:var(--sp-md)}
.kill-switch-row:last-child{border-bottom:none}
.kill-switch-info strong{font-size:.875rem;display:block}
.kill-switch-info span{font-size:.78rem;color:var(--color-ink-soft)}
.toggle-switch{position:relative;width:44px;height:24px;flex-shrink:0}
.toggle-switch input{opacity:0;width:0;height:0;position:absolute}
.toggle-slider{position:absolute;inset:0;background:var(--color-border);border-radius:99px;cursor:pointer;transition:background var(--t-fast)}
.toggle-slider::before{content:'';position:absolute;width:18px;height:18px;border-radius:50%;background:#fff;top:3px;left:3px;transition:transform var(--t-fast);box-shadow:0 1px 3px rgba(0,0,0,.2)}
.toggle-switch input:checked + .toggle-slider{background:var(--color-success)}
.toggle-switch input:checked + .toggle-slider::before{transform:translateX(20px)}
.admin-login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg)}
.admin-login-card{width:100%;max-width:400px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-xl);padding:var(--sp-2xl);box-shadow:var(--sh-xl);display:flex;flex-direction:column;gap:var(--sp-lg)}
.log-entry{font-family:var(--font-mono);font-size:.8rem;padding:var(--sp-sm);background:var(--color-surface-alt);border-radius:var(--r-sm);margin-bottom:4px;border-left:3px solid var(--color-border)}
.log-entry.err{border-left-color:var(--color-error)}

/* ── Toast ── */
.toast-container{position:fixed;bottom:var(--sp-lg);right:var(--sp-lg);display:flex;flex-direction:column;gap:var(--sp-sm);z-index:3000;pointer-events:none}
.toast{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-md);padding:var(--sp-sm) var(--sp-md);box-shadow:var(--sh-lg);display:flex;align-items:center;gap:var(--sp-sm);font-size:.875rem;font-weight:500;pointer-events:auto;animation:toastIn 200ms ease forwards;max-width:320px}
.toast.success{border-left:3px solid var(--color-success)}
.toast.error{border-left:3px solid var(--color-error)}
.toast.info{border-left:3px solid var(--color-brand-blue)}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}

/* ── Scroll animations ── */
.fade-in-up{opacity:0;transform:translateY(20px);transition:opacity 400ms ease,transform 400ms ease}
.fade-in-up.visible{opacity:1;transform:translateY(0)}

/* ── Utilities ── */
.text-center{text-align:center}.text-brand{color:var(--color-brand-blue)}.text-amber{color:var(--color-accent-amber)}.text-muted{color:var(--color-ink-soft)}.text-success{color:var(--color-success)}
.fw-600{font-weight:600}.fw-700{font-weight:700}
.mt-sm{margin-top:var(--sp-sm)}.mt-md{margin-top:var(--sp-md)}.mt-lg{margin-top:var(--sp-lg)}.mt-xl{margin-top:var(--sp-xl)}
.mb-md{margin-bottom:var(--sp-md)}.mb-lg{margin-bottom:var(--sp-lg)}.mb-xl{margin-bottom:var(--sp-xl)}
.d-flex{display:flex}.align-center{align-items:center}.gap-sm{gap:var(--sp-sm)}.gap-md{gap:var(--sp-md)}.flex-wrap{flex-wrap:wrap}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ── Responsive ── */
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){
  h2{font-size:1.5rem}
  .primary-nav,.header-right .no-signup-badge{display:none}
  .hamburger{display:flex}
  .hero-inner{grid-template-columns:1fr;padding:var(--sp-xl) 0;gap:var(--sp-xl)}
  .hero-visual{order:-1}.hero h1{font-size:2rem}
  .reassurance-grid,.steps-grid{grid-template-columns:1fr;gap:var(--sp-lg)}
  .steps-grid::before{display:none}
  .tool-widget{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-xl)}
  .comparison-table th,.comparison-table td{padding:var(--sp-sm) var(--sp-md)}
  .sticky-cta-bar{display:flex}
  .admin-layout{grid-template-columns:1fr}
  .admin-sidebar{display:none}
  .contact-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .container{padding:0 var(--sp-md)}
  .tools-grid{grid-template-columns:1fr 1fr}
  .gallery-grid,.blog-grid{grid-template-columns:1fr}
  .hero-reassurance{flex-direction:column;gap:var(--sp-sm)}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}.blueprint-grid::before{animation:none}
}

/* ── Format chip badges (3D Viewer upload zone) ── */
.dropzone-formats{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-top:var(--sp-sm)}
.format-chip{background:var(--color-surface-alt);border:1px solid var(--color-border);border-radius:var(--r-sm);padding:2px 10px;font-family:var(--font-mono);font-size:.78rem;font-weight:600;color:var(--color-ink-soft);letter-spacing:.04em}

/* ── Viewer standalone toolbar buttons ── */
.canvas-tb-btn.btn-secondary.btn-sm{border:1.5px solid var(--color-border);padding:.4rem .9rem;border-radius:var(--r-sm);font-size:.875rem;background:var(--color-surface);color:var(--color-ink);cursor:pointer;transition:all var(--t-fast)}
.canvas-tb-btn.btn-secondary.btn-sm:hover{background:var(--color-surface-alt);}
.canvas-tb-btn.btn-secondary.btn-sm.active{background:var(--color-brand-blue);color:#fff;border-color:var(--color-brand-blue)}

/* ── Viewer container ── */
#viewer-container canvas{display:block;width:100%;height:100%}

/* ── Blog index section ── */
.blog-grid{gap:var(--sp-xl)}

/* ── Tool page hero intro max width ── */
.page-header-intro{max-width:65ch}

/* ── Section generic spacing ── */
.section{padding:var(--sp-3xl) 0}

/* ── Kill switch admin ── */
.btn-secondary{display:inline-flex;align-items:center;gap:6px;padding:.5rem 1rem;background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--r-md);font-size:.9rem;font-weight:600;color:var(--color-ink);transition:all var(--t-fast);cursor:pointer}
.btn-secondary:hover{background:var(--color-surface-alt);border-color:var(--color-ink-soft)}

/* ── Responsive – new tool pages ── */
@media(max-width:768px){
  .tool-section h2{font-size:1.375rem}
  .related-grid{grid-template-columns:1fr 1fr}
  .page-header{padding-top:70px}
}
@media(max-width:480px){
  .related-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}