/* ============================================================
   ToolSewa – shared stylesheet
   Mobile-first, lightweight (no framework). Keep it fast.
   ============================================================ */
:root {
  --primary: #1d4ed8;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --accent: #f59e0b;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 4px 14px rgba(15, 23, 42, .06);
}

/* ---------- dark mode (toggle in header, saved per device) ---------- */
[data-theme="dark"] {
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --primary-light: #1e293b;
  --accent: #fbbf24;
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --border: #334155;
  --danger: #f87171;
  --success: #34d399;
  --shadow: 0 2px 12px rgba(0, 0, 0, .45);
}
[data-theme="dark"] .btn-secondary { background: #334155; }
[data-theme="dark"] .btn-secondary:hover { background: #475569; }
[data-theme="dark"] table.data tr:nth-child(even) td { background: #0b1220; }
[data-theme="dark"] .seo-copy p, [data-theme="dark"] .seo-copy li { color: var(--text); }
[data-theme="dark"] .waveform { background: #020617; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
img, canvas, video { max-width: 100%; height: auto; }
a { color: var(--primary); }
h1 { font-size: 1.6rem; line-height: 1.25; margin: .5rem 0 1rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 .75rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 .5rem; }

.container { max-width: 1000px; margin: 0 auto; padding: 0 1rem; }
.lead { color: var(--muted); font-size: 1.05rem; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.hidden { display: none !important; }

/* ---------- header / nav ---------- */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: .7rem; padding-bottom: .7rem; gap: .5rem;
}
.logo { font-weight: 800; font-size: 1.25rem; color: var(--text); text-decoration: none; }
.logo span { color: var(--primary); }
.main-nav { display: flex; gap: .25rem; flex-wrap: wrap; }
.main-nav a {
  color: var(--muted); text-decoration: none; font-size: .92rem; font-weight: 600;
  padding: .4rem .6rem; border-radius: 8px;
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); background: var(--primary-light); }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 60%, #3b82f6 100%);
  color: #fff; padding: 2.5rem 0 2rem; margin-bottom: 1.5rem;
}
.hero h1 { font-size: 1.9rem; margin: 0 0 .5rem; }
.hero p { margin: 0; opacity: .92; max-width: 640px; }
.hero .badges { margin-top: 1rem; display: flex; gap: .5rem; flex-wrap: wrap; }
.badge {
  background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.3);
  padding: .25rem .7rem; border-radius: 999px; font-size: .8rem; font-weight: 600;
}

/* ---------- tool grid ---------- */
.tool-grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  margin: 1.5rem 0 2rem;
}
.tool-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem .9rem; text-decoration: none; color: var(--text);
  box-shadow: var(--shadow); transition: transform .12s ease, box-shadow .12s ease;
  display: flex; flex-direction: column; gap: .35rem;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(15,23,42,.12); }
.tool-card .tool-icon { font-size: 1.8rem; }
.tool-card h3 { margin: 0; font-size: 1rem; }
.tool-card p { margin: 0; font-size: .83rem; color: var(--muted); }

/* ---------- cards / panels ---------- */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.25rem; margin: 1rem 0;
}
.card h2:first-child, .card h3:first-child { margin-top: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; border: none; cursor: pointer; font-weight: 700;
  font-size: .95rem; padding: .65rem 1.2rem; border-radius: 10px;
  text-decoration: none; transition: background .15s ease, transform .1s ease;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #e2e8f0; color: var(--text); }
.btn-secondary:hover { background: #cbd5e1; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-block { display: block; width: 100%; text-align: center; }
.toolbar { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0; }
.toolbar .btn { font-size: .88rem; padding: .55rem .9rem; }

/* ---------- forms ---------- */
.form-row { display: grid; gap: .9rem; margin: .9rem 0; grid-template-columns: 1fr; }
@media (min-width: 640px) { .form-row.cols-2 { grid-template-columns: 1fr 1fr; } .form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; } }
.form-group label { display: block; font-weight: 700; font-size: .88rem; margin-bottom: .3rem; }
.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="url"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  width: 100%; padding: .6rem .7rem; font-size: 1rem;
  border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--text);
}
.form-group input[type="range"] { width: 100%; }
.form-group input[type="color"] { width: 3rem; height: 2.2rem; padding: .15rem; border: 1px solid var(--border); border-radius: 8px; background: var(--card); }
.hint { font-size: .82rem; color: var(--muted); margin-top: .25rem; }

/* ---------- file drop zone ---------- */
.file-drop {
  border: 2px dashed var(--border); border-radius: var(--radius);
  background: var(--card); padding: 2rem 1rem; text-align: center; cursor: pointer;
  transition: border-color .15s ease, background .15s ease; margin: 1rem 0;
}
.file-drop:hover, .file-drop.dragover { border-color: var(--primary); background: var(--primary-light); }
.file-drop .big-icon { font-size: 2.4rem; display: block; margin-bottom: .4rem; }
.file-drop input[type="file"] { display: none; }

/* ---------- results / preview ---------- */
.result-box {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem; margin: 1rem 0; overflow-x: auto;
}
.result-box img, .result-box canvas, .result-box video { display: block; margin: 0 auto; border-radius: 8px; background: var(--card); }
.stat { display: flex; justify-content: space-between; gap: 1rem; padding: .35rem 0; border-bottom: 1px dashed var(--border); font-size: .92rem; }
.stat:last-child { border-bottom: none; }
.stat strong { font-variant-numeric: tabular-nums; }
.before-after { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .before-after { grid-template-columns: 1fr 1fr; } }
.ba-item { text-align: center; }
.ba-item figcaption { font-size: .85rem; color: var(--muted); margin-top: .3rem; }

/* ---------- alerts / progress ---------- */
.alert { padding: .8rem 1rem; border-radius: 10px; margin: 1rem 0; font-size: .93rem; }
.alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.alert-info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }
.progress { height: 10px; background: #e2e8f0; border-radius: 999px; overflow: hidden; margin: .75rem 0; }
.progress > div { height: 100%; width: 0%; background: var(--primary); border-radius: 999px; transition: width .2s ease; }
.spinner {
  display: inline-block; width: 1.1em; height: 1.1em; vertical-align: -0.2em;
  border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%;
  animation: spin .7s linear infinite; margin-right: .4rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- privacy note / seo copy ---------- */
.privacy-note {
  background: #f0fdf4; border: 1px solid #bbf7d0; color: #14532d;
  border-radius: 10px; padding: .7rem 1rem; font-size: .9rem; margin: 1.25rem 0;
}
.seo-copy { margin: 2.5rem 0 1rem; }
.seo-copy h2 { font-size: 1.15rem; }
.seo-copy p, .seo-copy li { color: #334155; font-size: .95rem; }
.steps { padding-left: 1.2rem; }
.steps li { margin: .4rem 0; }

/* ---------- ads ---------- */
.ad-slot {
  margin: 1.5rem auto; min-height: 90px; max-width: 100%;
  background: var(--primary-light); border: 1px dashed var(--border); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-size: .78rem;
}
.ad-slot::before { content: "Advertisement"; }

/* ---------- tables ---------- */
table.data { width: 100%; border-collapse: collapse; font-size: .92rem; margin: 1rem 0; background: var(--card); min-width: 480px; }
table.data th, table.data td { border: 1px solid var(--border); padding: .5rem .6rem; text-align: left; }
table.data th { background: var(--primary-light); }
table.data tr:nth-child(even) td { background: var(--bg); }

/* ---------- lists of files ---------- */
.file-list { list-style: none; padding: 0; margin: .75rem 0; }
.file-list li {
  display: flex; align-items: center; gap: .6rem; flex-wrap: wrap;
  background: var(--card); border: 1px solid var(--border); border-radius: 8px;
  padding: .5rem .7rem; margin-bottom: .5rem; font-size: .9rem;
}
.file-list .fname { flex: 1 1 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list .fsize { color: var(--muted); font-size: .82rem; font-variant-numeric: tabular-nums; }
.icon-btn { border: 1px solid var(--border); background: var(--card); color: var(--text); border-radius: 6px; cursor: pointer; padding: .25rem .5rem; font-size: .85rem; }
.icon-btn:hover { background: var(--primary-light); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--card); margin-top: 3rem; padding: 2rem 0 1.5rem; }
.footer-inner { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .footer-inner { grid-template-columns: 2fr 1fr; } }
.footer-nav { display: flex; flex-direction: column; gap: .35rem; }
.footer-nav a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.footer-nav a:hover { color: var(--primary); }
.footer-copy { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--border); text-align: center; }

/* ---------- misc ---------- */
canvas.editor-canvas { border: 1px solid var(--border); border-radius: 8px; background: #fff; touch-action: none; }
.waveform { width: 100%; border: 1px solid var(--border); border-radius: 8px; background: #0f172a; }
.kbd { background: var(--primary-light); border: 1px solid var(--border); border-radius: 6px; padding: .1rem .45rem; font-size: .85em; font-family: ui-monospace, monospace; }
details.faq { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: .8rem 1rem; margin: .6rem 0; }
details.faq summary { font-weight: 700; cursor: pointer; }
.two-col { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .two-col { grid-template-columns: 1fr 1fr; } }
.center { text-align: center; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mb-1 { margin-bottom: .5rem; }

/* ---------- hamburger + slide-in drawer ---------- */
.hamburger{display:none;background:none;border:1px solid var(--border);border-radius:8px;font-size:1.3rem;line-height:1;cursor:pointer;color:var(--text);padding:.35rem .6rem;}
.drawer-overlay{position:fixed;inset:0;background:rgba(15,23,42,.45);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:90;}
.drawer{position:fixed;top:0;right:-300px;width:280px;max-width:85vw;height:100dvh;background:var(--card);box-shadow:var(--shadow);z-index:100;transition:right .3s ease;padding:1.25rem 1rem;overflow-y:auto;}
body.drawer-open{overflow:hidden;}
body.drawer-open .drawer{right:0;}
body.drawer-open .drawer-overlay{opacity:1;pointer-events:auto;}
.drawer-close{background:none;border:none;font-size:1.2rem;cursor:pointer;color:var(--muted);float:right;padding:.25rem;}
.drawer-nav{display:flex;flex-direction:column;gap:.15rem;margin-top:2rem;}
.drawer-nav a{padding:.6rem .75rem;border-radius:8px;color:var(--text);text-decoration:none;font-weight:600;}
.drawer-nav a:hover{background:var(--primary-light);color:var(--primary);}
.drawer-sep{border:none;border-top:1px solid var(--border);margin:1rem 0;}
.drawer-heading{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 .5rem .75rem;}
.drawer-contacts{display:flex;flex-direction:column;gap:.15rem;}
.drawer-contacts a{padding:.55rem .75rem;border-radius:8px;color:var(--text);text-decoration:none;font-size:.95rem;word-break:break-all;}
.drawer-contacts a:hover{background:var(--primary-light);color:var(--primary);}
@media (max-width:768px){
  .hamburger{display:block;}
  .main-nav{display:none;}
}
.file-list .thumb{width:52px;height:52px;object-fit:cover;border-radius:8px;border:1px solid var(--border);flex:0 0 auto;}
.drawer-name{padding:.55rem .75rem;font-weight:700;font-size:.95rem;}
/* ---------- theme toggle ---------- */
.theme-toggle{background:none;border:1px solid var(--border);border-radius:8px;font-size:1.15rem;line-height:1;cursor:pointer;color:var(--text);padding:.35rem .55rem;flex:0 0 auto;}
.theme-toggle:hover{background:var(--primary-light);}

/* ---------- small-screen polish ---------- */
.stat strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:62%;}
@media (max-width: 480px) {
  h1{font-size:1.35rem;}
  .toolbar .btn{flex:1 1 100%;text-align:center;}
  .file-drop{padding:1.5rem .75rem;}
}
/* ---------- chapter / section title list ---------- */
.chapters{list-style:none;padding:0;margin:.75rem 0;}
.chapters li{display:flex;gap:.75rem;align-items:baseline;padding:.45rem .6rem;border-bottom:1px dashed var(--border);font-size:.92rem;}
.chapters li:last-child{border-bottom:none;}
.chapters .ts{font-variant-numeric:tabular-nums;color:var(--primary);font-weight:700;min-width:4.2rem;flex:0 0 auto;}
/* ---------- tap-to-copy affordance ---------- */
.stat strong.tap-copy{cursor:pointer;color:var(--primary);border-bottom:1px dotted var(--primary);}
.chapters li.tap-copy{cursor:pointer;}
.chapters li.tap-copy:active{background:var(--surface);}
/* ---------- title extractor preview ---------- */
.preview{display:flex;justify-content:center;margin-bottom:1rem;}
.preview.hidden{display:none;}
.preview img{max-width:100%;max-height:220px;border-radius:10px;box-shadow:0 2px 12px rgba(0,0,0,.25);}
.preview-icon{font-size:3rem;line-height:1;}


/* ---------- contact page links ---------- */
.contact-links{list-style:none;padding:0;margin:.5rem 0 0;}
.contact-links li{margin:.45rem 0;font-size:1.02rem;}
/* ---------- brand icon links ---------- */
.brand-row{display:flex;flex-wrap:wrap;gap:1.1rem;margin-top:.75rem;}
.brand-link{display:flex;flex-direction:column;align-items:center;gap:.35rem;text-decoration:none;color:inherit;min-width:64px;}
.brand-link svg{width:46px;height:46px;display:block;filter:drop-shadow(0 2px 5px rgba(0,0,0,.25));transition:transform .15s ease;}
.brand-link:hover svg,.brand-link:active svg{transform:scale(1.12);}
.brand-link span{font-size:.82rem;color:var(--muted);}
.brand-link.gh{color:#e2e8f0;}
[data-theme="light"] .brand-link.gh{color:#181717;}
/* ---------- new tools ---------- */
.check{display:flex;align-items:center;gap:.5rem;padding:.45rem .6rem;border:1px solid var(--border);border-radius:8px;cursor:pointer;}
.check input{width:1.05rem;height:1.05rem;accent-color:var(--primary);}
.meter{height:.7rem;border-radius:99px;background:var(--border);overflow:hidden;}
.meter-fill{height:100%;width:0;border-radius:99px;background:#22c55e;transition:width .25s ease;}
.result-box{padding:1.1rem;border:1px dashed var(--border);border-radius:10px;background:var(--surface);font-size:1.05rem;}
.result-box strong{font-size:1.25rem;}