/* ─── Reset & Root ──────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --mint:#e8f8f2;--green:#2bb87b;--green2:#1a9b63;--teal:#3ecfb2;
  --navy:#1c2b3a;--ink:#2d3d4e;--muted:#7a8fa0;--border:#d8eae2;
  --white:#fff;--bg:#f4fbf8;--card:#fff;--radius:16px;
  --shadow:0 4px 24px rgba(43,184,123,.10);
  --font-head:'Lora',Georgia,serif;--font-body:'Plus Jakarta Sans',sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--ink);font-size:16px;line-height:1.65}

/* ─── Header ────────────────────────────── */
header{background:var(--white);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.header-inner{max-width:1160px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-family:var(--font-head);font-size:1.5rem;font-weight:600;color:var(--navy);text-decoration:none;white-space:nowrap;display:flex;align-items:center;gap:8px}
.logo span{color:var(--green)}
.logo-icon{width:32px;height:32px;object-fit:contain;border-radius:6px;transition:transform .35s ease;flex-shrink:0;background: var(--green); padding: 3px; border-radius: 50%;}
.logo:hover .logo-icon{transform:rotateY(180deg)}
nav{display:flex;gap:22px;align-items:center}
nav a{font-size:.88rem;font-weight:500;color:var(--muted);text-decoration:none;transition:color .2s}
nav a:hover{color:var(--green)}
.btn-nav{background:var(--green);color:#fff!important;padding:7px 18px;border-radius:50px;font-size:.82rem!important;transition:background .2s!important}
.btn-nav:hover{background:var(--green2)!important}

/* ─── Hero ──────────────────────────────── */
.hero-band{background:linear-gradient(135deg,#e0f7ef 0%,#f0fdf8 60%,#e6f4ff 100%);padding:34px 24px 26px;text-align:center}
.hero-band h1{font-family:var(--font-head);font-size:clamp(1.7rem,4vw,2.55rem);color:var(--navy);line-height:1.25;max-width:510px;margin:0 auto 9px}
.hero-band p{font-size:.96rem;color:var(--muted);max-width:500px;margin:0 auto}
.badge-row{margin-top:13px;display:flex;justify-content:center;gap:7px;flex-wrap:wrap}
.badge{background:var(--white);border:1px solid var(--border);border-radius:50px;padding:3px 12px;font-size:.75rem;color:var(--green2);font-weight:600}

/* ─── Tool Tabs ─────────────────────────── */
.tool-tabs-wrap{max-width:1120px;margin:0 auto;padding:22px 24px 0}
.tool-tabs{display:flex;gap:4px;background:var(--white);border:1.5px solid var(--border);border-radius:50px;padding:4px;width:fit-content;max-width:100%;overflow-x:auto;scrollbar-width:none}
.tool-tabs::-webkit-scrollbar{display:none}
.tool-tab{padding:7px 18px;border-radius:50px;border:none;background:transparent;color:var(--muted);font-family:var(--font-body);font-size:.84rem;font-weight:600;cursor:pointer;transition:all .18s;white-space:nowrap;flex-shrink:0}
.tool-tab:hover{color:var(--green)}
.tool-tab.active{background:var(--green);color:#fff;box-shadow:0 2px 8px rgba(43,184,123,.3)}
.tool-panel{display:none}
.tool-panel.active{display:block}

/* ─── Tool Section ──────────────────────── */
#tool{max-width:1120px;margin:0 auto;padding:18px 24px 40px}
.modes{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.mode-btn{padding:6px 15px;border-radius:50px;border:1.5px solid var(--border);background:var(--white);color:var(--muted);font-size:.81rem;font-family:var(--font-body);font-weight:600;cursor:pointer;transition:all .18s}
.mode-btn:hover{border-color:var(--green);color:var(--green)}
.mode-btn.active{background:var(--green);border-color:var(--green);color:#fff}
.mode-desc{font-size:.8rem;color:var(--muted);margin-bottom:14px;min-height:18px}

/* ─── Editor Grid ───────────────────────── */
.editor-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:stretch}
.editor-box{background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow)}
.editor-box:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px rgba(62,207,178,.15),var(--shadow)}
.editor-label{padding:9px 15px;font-size:.75rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.word-count{font-weight:400;color:#b0c4cc}
textarea{flex:1;border:none;outline:none;resize:none;padding:13px 15px;font-family:var(--font-body);font-size:.92rem;color:var(--ink);background:transparent;line-height:1.7;min-height:195px}
.editor-footer{padding:8px 13px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}

/* ─── Action Buttons ────────────────────── */
.arrow-col{display:flex;align-items:center;justify-content:center;padding:0 10px}
.para-btn{padding:10px 22px;border-radius:50px;border:none;background:var(--green);color:#fff;font-family:var(--font-body);font-size:.9rem;font-weight:700;cursor:pointer;box-shadow:0 4px 16px rgba(43,184,123,.35);transition:all .2s;white-space:nowrap;display:flex;align-items:center;gap:7px}
.para-btn:hover:not(:disabled){background:var(--green2);transform:scale(1.04)}
.para-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.para-btn .spinner{display:none;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
.para-btn.loading .spinner{display:block}
.para-btn.loading .icon{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.arrow-btn{width:48px;height:48px;border-radius:50%;background:var(--green);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px rgba(43,184,123,.35);transition:all .2s}
.arrow-btn:hover:not(:disabled){background:var(--green2);transform:scale(1.07)}
.arrow-btn:disabled{opacity:.6;cursor:not-allowed}
.arrow-btn svg{width:20px;height:20px;fill:#fff}

/* ─── Small Buttons ─────────────────────── */
.btn{padding:7px 15px;border-radius:50px;border:none;font-family:var(--font-body);font-size:.82rem;font-weight:600;cursor:pointer;transition:all .2s}
.btn-ghost{background:transparent;color:var(--muted);border:1.5px solid var(--border)}
.btn-ghost:hover{border-color:var(--green);color:var(--green)}
.btn-copy{background:var(--mint);color:var(--green2);border:1.5px solid var(--border)}
.btn-copy:hover{background:var(--green);color:#fff;border-color:var(--green)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-sample{background:transparent;color:var(--teal);border:1.5px solid var(--teal);font-size:.78rem;padding:5px 13px}
.btn-sample:hover{background:var(--teal);color:#fff}
.btn-paste{background:transparent;color:var(--muted);border:1.5px solid var(--border);font-size:.78rem;padding:5px 13px}
.btn-paste:hover{border-color:var(--green);color:var(--green)}
.input-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap}

/* ─── File Upload ───────────────────────── */
.file-upload-area{border:1.5px dashed var(--border);border-radius:10px;padding:10px 14px;margin:0 13px 10px;display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg);cursor:pointer;transition:border-color .2s}
.file-upload-area:hover{border-color:var(--teal)}
.file-upload-label{font-size:.78rem;color:var(--muted);display:flex;align-items:center;gap:6px;cursor:pointer;flex:1}
.file-upload-label svg{width:16px;height:16px;flex-shrink:0;color:var(--teal)}
.file-upload-label span{color:var(--teal);font-weight:600}
.file-upload-input{display:none}
.file-size-note{font-size:.72rem;color:#b0c4cc;white-space:nowrap}

/* ─── Output ────────────────────────────── */
.output-placeholder{flex:1;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:7px;color:#c5d9d0;min-height:195px;padding:20px}
.output-placeholder svg{width:36px;height:36px;opacity:.4}
.output-placeholder p{font-size:.86rem;text-align:center}
.output-text{flex:1;padding:13px 15px;font-size:.92rem;color:var(--ink);line-height:1.7;display:none;white-space:pre-wrap;word-break:break-word}
.remaining-note{font-size:.75rem;color:var(--muted)}
.remaining-note strong{color:var(--green2)}

/* ─── Error Toast ───────────────────────── */
.err-toast{display:none;background:#fff0f0;border:1px solid #fca5a5;border-radius:10px;padding:10px 16px;font-size:.84rem;color:#b91c1c;margin-bottom:12px;line-height:1.5}
.err-toast.show{display:block}

/* ─── Slider & Lang ─────────────────────── */
.slider-row{display:flex;align-items:center;gap:7px;font-size:.79rem;color:var(--muted)}
.slider-row input[type=range]{accent-color:var(--green);width:76px;cursor:pointer}
.slider-label{font-weight:600;color:var(--green2);min-width:46px}
.lang-row{display:flex;align-items:center;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.lang-row label{font-size:.81rem;color:var(--muted);font-weight:600}
.lang-select{padding:6px 12px;border-radius:50px;border:1.5px solid var(--border);background:var(--white);color:var(--ink);font-family:var(--font-body);font-size:.82rem;cursor:pointer;outline:none;transition:border-color .2s}
.lang-select:focus{border-color:var(--teal)}
.lang-badge{background:var(--mint);color:var(--green2);font-size:.74rem;font-weight:600;padding:3px 10px;border-radius:50px;border:1px solid var(--border)}

/* ─── SEO Content ───────────────────────── */
#seo-content{max-width:1160px;margin:0 auto;padding:0 24px}
.seo-section{margin-bottom:40px}
.seo-section h2{font-family:var(--font-head);font-size:1.5rem;color:var(--navy);margin-bottom:12px;position:relative;display:inline-block}
.seo-section h2::after{content:'';display:block;width:34px;height:3px;background:var(--green);border-radius:2px;margin-top:5px}
.seo-section p{color:var(--ink);margin-bottom:11px}
.seo-section ul{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:12px}
.seo-section ul li{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:11px 13px;font-size:.89rem;display:flex;gap:8px;align-items:flex-start}
.seo-section ul li::before{content:'✓';color:var(--green);font-weight:700;flex-shrink:0}
.steps{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.step{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:13px 17px;display:flex;gap:13px;align-items:flex-start}
.step-num{width:28px;height:28px;border-radius:50%;background:var(--green);color:#fff;font-weight:700;font-size:.8rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.step-body strong{display:block;font-weight:600;color:var(--navy);margin-bottom:1px}
.step-body span{font-size:.87rem;color:var(--muted)}

/* ─── Examples ──────────────────────────── */
.example-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-top:12px}
.example-row{display:grid;grid-template-columns:1fr 1fr}
.example-col{padding:16px 20px}
.example-col:first-child{border-right:1px solid var(--border)}
.example-col p{font-size:.89rem;line-height:1.7;color:var(--ink)}
.example-col.output-col p{color:var(--green2)}
.example-badge{display:inline-block;background:var(--mint);border-radius:50px;padding:2px 10px;font-size:.72rem;font-weight:600;color:var(--green2);margin-bottom:7px}

/* ─── FAQ ───────────────────────────────── */
.faq{margin-top:12px;display:flex;flex-direction:column;gap:7px}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.faq-q{padding:14px 17px;font-weight:600;color:var(--navy);cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none;transition:background .15s;font-size:.93rem}
.faq-q:hover{background:var(--mint)}
.faq-q .chevron{transition:transform .25s;width:16px;height:16px;flex-shrink:0}
.faq-item.open .faq-q .chevron{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .2s;padding:0 17px;font-size:.87rem;color:var(--muted);line-height:1.7}
.faq-item.open .faq-a{max-height:300px;padding:0 17px 14px}

/* ─── Blog ──────────────────────────────── */
#blog{background:var(--white);border-top:1px solid var(--border);padding:40px 24px 56px}
.blog-inner{max-width:1120px;margin:0 auto}
.blog-inner h2{font-family:var(--font-head);font-size:1.5rem;color:var(--navy);margin-bottom:5px}
.blog-inner>p{color:var(--muted);margin-bottom:24px;font-size:.92rem}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(265px,1fr));gap:14px}
.blog-card{border:1.5px solid var(--border);border-radius:var(--radius);padding:18px;background:var(--bg);transition:box-shadow .2s,border-color .2s;text-decoration:none;display:block}
.blog-card:hover{box-shadow:var(--shadow);border-color:var(--teal)}
.blog-tag{display:inline-block;background:var(--mint);border-radius:50px;padding:2px 10px;font-size:.72rem;font-weight:600;color:var(--green2);margin-bottom:7px}
.blog-card h3{font-family:var(--font-head);font-size:.98rem;color:var(--navy);margin-bottom:5px;line-height:1.4}
.blog-card p{font-size:.83rem;color:var(--muted)}

/* ─── Footer ────────────────────────────── */
footer{background:var(--navy);color:rgba(255,255,255,.55);padding:30px 24px;text-align:center;font-size:.83rem}
footer a{color:rgba(255,255,255,.7);text-decoration:none;margin:0 7px}
footer a:hover{color:var(--teal)}
.footer-logo{font-family:var(--font-head);font-size:1.1rem;color:#fff;margin-bottom:9px;display:block}

/* ─── Mobile Bar ────────────────────────── */
.mobile-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;padding:11px 16px;background:var(--white);border-top:1px solid var(--border);box-shadow:0 -4px 16px rgba(0,0,0,.08)}
.mobile-bar button{width:100%;padding:13px;border-radius:50px;background:var(--green);color:#fff;border:none;font-family:var(--font-body);font-size:.97rem;font-weight:700;cursor:pointer;box-shadow:0 4px 16px rgba(43,184,123,.35);transition:background .2s}
.mobile-bar button:active{background:var(--green2)}

/* ─── Responsive ────────────────────────── */
@media(max-width:700px){
  nav{display:none}
  .editor-grid{grid-template-columns:1fr}
  .arrow-col{padding:10px 0;transform:none}
  .arrow-col .para-btn{width:100%;justify-content:center}
  .seo-section ul{grid-template-columns:1fr}
  .example-row{grid-template-columns:1fr}
  .example-col:first-child{border-right:none;border-bottom:1px solid var(--border)}
  #blog{display:none}
  .tool-tabs-wrap{padding:14px 12px 0}
  .tool-tabs{width:100%;border-radius:14px;flex-wrap:nowrap;overflow-x:auto}
  .tool-tab{padding:8px 14px;font-size:.78rem;flex-shrink:0}
  textarea{min-height:130px}
  .modes{gap:5px}
  .mode-btn{padding:5px 11px;font-size:.77rem}
  .mobile-bar{display:flex}
  body{padding-bottom:68px}
  .hero-band{padding:24px 16px 20px}
  #tool{padding:14px 16px 28px}
  .file-upload-area{flex-direction:column;align-items:flex-start;gap:6px}
}
.lang-switcher {margin-top:18px;display:flex;flex-direction:column;align-items:center;gap:10px;}
.lang-label {font-size:.78rem;color:var(--muted);font-weight:600;letter-spacing:.04em;text-transform:uppercase;}
.lang-list {display:flex;flex-wrap:wrap;justify-content:center;gap:8px;}
.lang-item {display:flex;align-items:center;gap:5px;padding:5px 13px;border-radius:50px;border:1.5px solid var(--border);background:var(--white);color:var(--muted);font-size:.8rem;font-weight:500;text-decoration:none;transition:all .18s;white-space:nowrap;}
.lang-item:hover {border-color:var(--green);color:var(--green);background:var(--mint);transform:translateY(-1px);}
.lang-item.active {border-color:var(--green);background:var(--green);color:#fff;}
.lang-flag {font-size:1rem;line-height:1;}
.lang-name {line-height:1;}
.hub-section{padding:56px 24px 48px;max-width:1160px;margin:0 auto}
.hub-header{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.hub-header-text h2{font-size:clamp(1.25rem, 2.8vw, 1.65rem);font-weight:800;color:var(--ink);letter-spacing:-.025em;margin-bottom:4px}
.hub-header-text p{font-size:.85rem;color:var(--muted);margin:0}
.hub-view-all{font-size:.78rem;font-weight:700;color:var(--teal);text-decoration:none;white-space:nowrap;letter-spacing:.03em;border:1.5px solid var(--teal);border-radius:20px;padding:5px 16px;transition:background .2s,color .2s}
.hub-view-all:hover{background:var(--teal);color:#fff}
.quiz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(172px,1fr));gap:14px}
.quiz-card{display:flex;flex-direction:column;background:#fff;border:1.5px solid var(--border);border-radius:14px;overflow:hidden;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s,border-color .2s;position:relative}
.quiz-card:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(0,0,0,.08);border-color:var(--teal)}
.quiz-card-thumb{height:82px;display:flex;align-items:center;justify-content:center;font-size:2.2rem;position:relative;overflow:hidden}
.quiz-card-thumb img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.quiz-card-body{padding:11px 13px 13px;flex:1;display:flex;flex-direction:column}
.quiz-card-label{display:inline-block;font-size:.63rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em;color:var(--teal);background:color-mix(in srgb,var(--teal) 10%,#fff);border-radius:4px;padding:2px 7px;margin-bottom:6px}
.quiz-card-title{font-size:.84rem;font-weight:700;color:var(--ink);line-height:1.38;margin-bottom:5px;flex:1}
.quiz-card-cta{font-size:.72rem;font-weight:700;color:var(--teal);letter-spacing:.04em;display:flex;align-items:center;gap:4px}
.quiz-card-cta::after{content:'→';transition:transform .2s}
.quiz-card:hover .quiz-card-cta::after{transform:translateX(3px)}
.converter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin-bottom:30px;max-height:360px;overflow:hidden;position:relative}
.converter-grid a{background:var(--white);border:1.5px solid var(--border);padding:13px 15px;border-radius:12px;text-decoration:none;color:var(--ink);font-size:.88rem;font-weight:500;transition:all .2s;display:block}
.converter-grid a:hover{background:var(--green);color:#fff;border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow)}
.online-tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.tool-card{display:flex;align-items:center;gap:14px;background:#fff;border:1.5px solid var(--border);border-radius:14px;padding:15px 17px;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s,border-color .2s;position:relative;overflow:hidden}
.tool-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 60%,color-mix(in srgb,var(--teal) 6%,transparent));opacity:0;transition:opacity .25s}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(0,0,0,.08);border-color:var(--teal)}
.tool-card:hover::before{opacity:1}
.tool-card-icon{flex-shrink:0;width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;background:color-mix(in srgb,var(--teal) 10%,#f8fffe);border:1px solid color-mix(in srgb,var(--teal) 18%,transparent);position:relative;z-index:1}
.tool-card-info{flex:1;min-width:0;position:relative;z-index:1}
.tool-card-name{font-size:.87rem;font-weight:700;color:var(--ink);line-height:1.35;margin-bottom:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tool-card-tag{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--teal);opacity:.85}
.tool-card-arrow{flex-shrink:0;width:20px;height:20px;border-radius:50%;background:color-mix(in srgb,var(--teal) 12%,transparent);display:flex;align-items:center;justify-content:center;font-size:.75rem;color:var(--teal);transition:background .2s,transform .2s;position:relative;z-index:1}
.tool-card:hover .tool-card-arrow{background:var(--teal);color:#fff;transform:translateX(2px)}
.hub-divider{border:none;border-top:1px solid var(--border);margin:0 24px}
@media (max-width:520px){.converter-grid,.quiz-grid{grid-template-columns:repeat(2,1fr)}
.quiz-card-thumb{height:68px;font-size:1.8rem}
.online-tools-grid{grid-template-columns:1fr 1fr;gap:10px}
.tool-card{flex-direction:column;align-items:flex-start;gap:10px;padding:13px 13px 12px}
.tool-card-icon{width:38px;height:38px;font-size:1.2rem}
.tool-card-name{font-size:.8rem;white-space:normal}
.tool-card-arrow{display:none}
}