/* SepooTools — Design System */
:root{
  --bg:#F5F7FB; --surface:#FFFFFF; --ink:#111726; --muted:#5B6472;
  --line:#E4E9F0; --primary:#2D5BFF; --primary-hover:#1E46D9; --primary-ink:#FFFFFF;
  --accent:#FFB020; --success:#16A34A; --danger:#E5484D;
  --cat-pdf:#E5484D; --cat-image:#8E4EC6; --cat-text:#0E9FE5; --cat-dev:#16A34A; --cat-utility:#F59E0B;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,23,38,.05),0 8px 24px rgba(16,23,38,.07);
  --shadow-lg:0 12px 40px rgba(16,23,38,.12);
  --font-display:'Sora',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
}
[data-theme="dark"]{
  --bg:#0C111C; --surface:#151C2C; --ink:#EDF1F7; --muted:#98A2B3;
  --line:#232D42; --primary:#5B7CFF; --primary-hover:#7690FF; --primary-ink:#0C111C;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 12px 40px rgba(0,0,0,.5);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{font-family:var(--font-body);background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:var(--font-display);line-height:1.2;letter-spacing:-.02em}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.15rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#7B4EE0);display:grid;place-items:center;color:#fff;font-weight:800;font-size:.95rem;flex-shrink:0}
.nav-links{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav-links a{color:var(--muted);font-size:.92rem;font-weight:500;padding:8px 12px;border-radius:8px}
.nav-links a:hover{color:var(--ink);background:var(--surface);text-decoration:none}
.theme-toggle{background:var(--surface);border:1px solid var(--line);border-radius:10px;width:38px;height:38px;cursor:pointer;font-size:1rem;display:grid;place-items:center;color:var(--ink)}
.theme-toggle:hover{border-color:var(--primary)}
.menu-btn{display:none;background:none;border:none;font-size:1.5rem;color:var(--ink);cursor:pointer}
@media(max-width:820px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--surface);flex-direction:column;align-items:stretch;padding:12px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)}
  .nav-links.open{display:flex}
  .menu-btn{display:block;margin-left:auto}
  .nav-links .theme-toggle{width:100%}
}

/* Hero */
.hero{padding:72px 0 48px;text-align:center}
.hero h1{font-size:clamp(2rem,5vw,3.3rem);font-weight:800;max-width:760px;margin:0 auto 16px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--primary),#7B4EE0);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:1.1rem;max-width:640px;margin:0 auto 32px}
.search-bar{max-width:640px;margin:0 auto;position:relative}
.search-bar input{width:100%;padding:18px 56px 18px 52px;font-size:1.05rem;font-family:var(--font-body);border:1.5px solid var(--line);border-radius:16px;background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
.search-bar input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 15%,transparent)}
.search-bar .icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.search-bar kbd{position:absolute;right:16px;top:50%;transform:translateY(-50%);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 8px;font-size:.8rem;color:var(--muted);font-family:var(--font-mono)}
.chips{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.chip{padding:7px 16px;border-radius:99px;border:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:.88rem;font-weight:500;cursor:pointer;font-family:var(--font-body)}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.chip.active{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}
.trust-line{margin-top:28px;color:var(--muted);font-size:.88rem;display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.trust-line span{display:flex;align-items:center;gap:6px}

/* Tool grid */
.section{padding:36px 0}
.section-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.section-head h2{font-size:1.35rem}
.section-head .dot{width:10px;height:10px;border-radius:3px}
.count-pill{margin-left:auto;color:var(--muted);font-size:.85rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.tool-card{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;color:var(--ink);transition:transform .15s,box-shadow .15s,border-color .15s}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--primary);text-decoration:none}
.tool-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:1.25rem;flex-shrink:0;color:#fff}
.tool-card h3{font-size:1rem;font-weight:600;font-family:var(--font-body);margin-bottom:3px}
.tool-card p{font-size:.84rem;color:var(--muted);line-height:1.45}
.hidden{display:none!important}

/* Tool page */
.tool-hero{padding:44px 0 8px;text-align:center}
.tool-hero .tool-icon{margin:0 auto 16px;width:56px;height:56px;font-size:1.6rem}
.tool-hero h1{font-size:clamp(1.6rem,4vw,2.4rem);margin-bottom:10px}
.tool-hero p{color:var(--muted);max-width:620px;margin:0 auto}
.breadcrumbs{padding:16px 0 0;font-size:.85rem;color:var(--muted)}
.tool-panel{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px;margin:28px auto;box-shadow:var(--shadow);max-width:860px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:6px}
textarea,input[type=text],input[type=number],input[type=date],input[type=url],select{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:.95rem}
textarea{min-height:170px;resize:vertical;font-family:var(--font-mono);font-size:.88rem;line-height:1.5}
textarea:focus,input:focus,select:focus{border-color:var(--primary);outline:none}
.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:16px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:.92rem;cursor:pointer;border:1.5px solid transparent;font-family:var(--font-body)}
.btn-primary{background:var(--primary);color:var(--primary-ink)}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin-top:16px}
.stat{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px;text-align:center}
.stat b{display:block;font-size:1.4rem;font-family:var(--font-display);color:var(--primary)}
.stat span{font-size:.78rem;color:var(--muted)}
.drop-zone{border:2px dashed var(--line);border-radius:var(--radius);padding:44px 20px;text-align:center;cursor:pointer;background:var(--bg);transition:border-color .15s,background .15s}
.drop-zone:hover,.drop-zone.drag{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 6%,var(--bg))}
.drop-zone .dz-icon{font-size:2rem;margin-bottom:8px}
.drop-zone p{color:var(--muted);font-size:.9rem}
.drop-zone b{color:var(--primary)}
.file-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.file-item{display:flex;align-items:center;gap:10px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 14px;font-size:.88rem}
.file-item .size{color:var(--muted);margin-left:auto;white-space:nowrap}
.result-note{margin-top:14px;padding:12px 16px;border-radius:var(--radius-sm);font-size:.9rem;display:none}
.result-note.ok{display:block;background:color-mix(in srgb,var(--success) 12%,var(--surface));color:var(--success);border:1px solid color-mix(in srgb,var(--success) 35%,transparent)}
.result-note.err{display:block;background:color-mix(in srgb,var(--danger) 10%,var(--surface));color:var(--danger);border:1px solid color-mix(in srgb,var(--danger) 35%,transparent)}
.preview-box{margin-top:16px;text-align:center}
.preview-box img,.preview-box canvas{max-width:100%;max-height:340px;border-radius:var(--radius-sm);border:1px solid var(--line)}
pre.output{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px;font-family:var(--font-mono);font-size:.85rem;overflow:auto;max-height:400px;white-space:pre-wrap;word-break:break-word}
.range-row{display:flex;align-items:center;gap:12px}
input[type=range]{flex:1;accent-color:var(--primary)}
.check{display:flex;align-items:center;gap:8px;font-size:.9rem;cursor:pointer}
.check input{accent-color:var(--primary);width:16px;height:16px}

/* Content sections on tool pages */
.content-block{max-width:860px;margin:0 auto 36px}
.content-block h2{font-size:1.25rem;margin-bottom:14px}
.steps{display:grid;gap:10px;counter-reset:step}
.steps li{list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px 14px 52px;position:relative;font-size:.92rem;counter-increment:step}
.steps li::before{content:counter(step);position:absolute;left:14px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:8px;background:var(--primary);color:var(--primary-ink);display:grid;place-items:center;font-weight:700;font-size:.82rem;font-family:var(--font-display)}
details.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:8px}
details.faq summary{padding:14px 16px;font-weight:600;font-size:.93rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
details.faq summary::after{content:"+";color:var(--muted);font-size:1.2rem}
details.faq[open] summary::after{content:"–"}
details.faq div{padding:0 16px 14px;color:var(--muted);font-size:.9rem}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}

/* Ad slots */
.ad-slot{max-width:860px;margin:20px auto;min-height:90px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-sm);display:grid;place-items:center;color:var(--muted);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}

/* Static pages */
.page-body{max-width:760px;margin:0 auto;padding:44px 0 60px}
.page-body h1{font-size:2rem;margin-bottom:20px}
.page-body h2{font-size:1.25rem;margin:28px 0 10px}
.page-body p,.page-body li{color:var(--muted);font-size:.96rem;margin-bottom:12px}
.page-body ul{padding-left:22px}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:40px 0 28px;background:var(--surface)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px;margin-bottom:28px}
@media(max-width:720px){.footer-grid{grid-template-columns:1fr 1fr}}
.site-footer h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:12px;font-family:var(--font-body)}
.site-footer a{display:block;color:var(--ink);font-size:.9rem;margin-bottom:8px;opacity:.85}
.site-footer .about-col p{color:var(--muted);font-size:.88rem;margin-top:10px}
.footer-bottom{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.83rem}