*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand:#4F6EF7;
  --brand-deep:#3A55D4;
  --accent:#8B5CF6;
  --accent-light:#EDE9FE;
  --sky:#E8EFFE;
  --surface:#FFFFFF;
  --surface2:#F7F8FC;
  --surface3:#F0F2FA;
  --border:#E4E7F3;
  --border2:#CED3EE;
  --text:#12163A;
  --text2:#4B5280;
  --text3:#8A90B8;
  --success:#059669;
  --success-bg:#ECFDF5;
  --warning:#D97706;
  --danger:#DC2626;
  --danger-bg:#FEF2F2;
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:20px;
  --shadow:0 1px 3px rgba(79,110,247,.07),0 4px 16px rgba(79,110,247,.06);
  --shadow-lg:0 8px 32px rgba(79,110,247,.12),0 2px 8px rgba(79,110,247,.06);
  --shadow-xl:0 20px 60px rgba(79,110,247,.15),0 4px 16px rgba(79,110,247,.08);
  --mono:'DM Mono',monospace;
}
body{font-family:'DM Sans',sans-serif;background:var(--surface2);color:var(--text);min-height:100vh;line-height:1.6;overflow-x:hidden}

/* ===== NAVBAR ===== */
nav{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:60px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:600;font-size:1.1rem;color:var(--text);text-decoration:none}
.nav-logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700}
.nav-badge{font-size:11px;background:linear-gradient(90deg,var(--brand),var(--accent));color:#fff;padding:3px 9px;border-radius:20px;font-weight:500}
.nav-links{display:flex;align-items:center;gap:1.5rem}
.nav-links a{font-size:.875rem;color:var(--text2);text-decoration:none;transition:color .2s}
.nav-links a:hover{color:var(--brand)}
.nav-cta{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff!important;padding:8px 18px;border-radius:8px;font-weight:500;transition:opacity .2s,transform .2s!important}
.nav-cta:hover{opacity:.9;transform:translateY(-1px)!important}

/* ===== HERO ===== */
.hero{padding:3rem 2rem 1.5rem;text-align:center;max-width:800px;margin:0 auto}
.hero-tag{display:inline-flex;align-items:center;gap:6px;background:var(--accent-light);color:var(--accent);font-size:.8rem;font-weight:600;padding:6px 14px;border-radius:20px;margin-bottom:1.2rem;letter-spacing:.03em}
.hero-tag-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.3)}}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:600;color:var(--text);line-height:1.2;margin-bottom:.75rem}
.hero h1 span{background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{color:var(--text2);font-size:1rem;max-width:550px;margin:0 auto 1.5rem}
.hero-stats{display:flex;gap:2rem;justify-content:center;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat strong{display:block;font-size:1.4rem;font-weight:600;color:var(--brand)}
.hero-stat span{font-size:.8rem;color:var(--text3)}

/* ===== MAIN LAYOUT ===== */
.main{max-width:1300px;margin:0 auto;padding:1.5rem 1.5rem 4rem;display:grid;grid-template-columns:1fr 340px;gap:1.5rem;align-items:start}
@media(max-width:1024px){.main{grid-template-columns:1fr}}

/* ===== CARDS ===== */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow)}
.card-title{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text3);margin-bottom:1rem;display:flex;align-items:center;gap:6px}
.card-title svg{opacity:.6}

/* ===== INPUT SECTION ===== */
.input-card{position:relative}
.editor-toolbar{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;background:var(--surface2);border-bottom:1px solid var(--border);border-radius:var(--radius) var(--radius) 0 0;flex-wrap:wrap}
.editor-tabs{display:flex;gap:4px;background:var(--surface3);padding:3px;border-radius:8px}
.editor-tab{padding:5px 12px;border-radius:6px;font-size:.8rem;font-weight:500;cursor:pointer;border:none;background:transparent;color:var(--text2);transition:all .2s}
.editor-tab.active{background:var(--surface);color:var(--brand);box-shadow:0 1px 4px rgba(0,0,0,.08)}
.toolbar-right{margin-left:auto;display:flex;gap:.5rem;align-items:center}
.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:8px;font-size:.8rem;font-weight:500;cursor:pointer;border:none;transition:all .2s;text-decoration:none;white-space:nowrap}
.btn svg{width:14px;height:14px;flex-shrink:0}
.btn-ghost{background:transparent;color:var(--text2);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--surface3);color:var(--text);border-color:var(--border2)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 2px 8px rgba(79,110,247,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(79,110,247,.4)}
.btn-primary:active{transform:translateY(0)}
.btn-success{background:var(--success);color:#fff}
.btn-success:hover{background:#047857;transform:translateY(-1px)}
.btn-sm{padding:5px 10px;font-size:.75rem}
.btn-lg{padding:12px 24px;font-size:.9rem}
.btn-xl{padding:14px 28px;font-size:1rem;border-radius:12px}

/* ===== TEXTAREA ===== */
.textarea-wrap{position:relative}
#mainEditor{width:100%;min-height:320px;padding:1.25rem;font-family:var(--mono);font-size:.85rem;line-height:1.7;border:none;outline:none;resize:vertical;color:var(--text);background:var(--surface);border-radius:0 0 var(--radius) var(--radius)}
.editor-footer{display:flex;align-items:center;justify-content:space-between;padding:.6rem 1rem;background:var(--surface2);border-top:1px solid var(--border);border-radius:0 0 var(--radius-lg) var(--radius-lg);flex-wrap:wrap;gap:.5rem}
.counter{font-size:.75rem;color:var(--text3);display:flex;gap:1rem}
.counter span b{color:var(--text2);font-weight:500}
.encoding-wrap{display:flex;align-items:center;gap:.5rem}
.encoding-wrap label{font-size:.75rem;color:var(--text3)}
select.inline-select{font-size:.75rem;border:1px solid var(--border);border-radius:6px;padding:3px 8px;background:var(--surface);color:var(--text2);cursor:pointer;outline:none}

/* ===== DROPZONE ===== */
.dropzone{border:2px dashed var(--border2);border-radius:var(--radius);padding:2.5rem 1.5rem;text-align:center;cursor:pointer;transition:all .3s;background:var(--surface);position:relative}
.dropzone:hover,.dropzone.dragover{border-color:var(--brand);background:var(--sky)}
.dropzone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.dropzone-icon{width:48px;height:48px;background:var(--sky);border-radius:12px;margin:0 auto 1rem;display:flex;align-items:center;justify-content:center;color:var(--brand)}
.dropzone p{color:var(--text2);font-size:.875rem;margin-bottom:.25rem}
.dropzone small{color:var(--text3);font-size:.75rem}

/* ===== TEMPLATES GRID ===== */
.templates-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.5rem}
.template-btn{padding:.6rem .8rem;border:1px solid var(--border);border-radius:8px;background:var(--surface);cursor:pointer;font-size:.8rem;color:var(--text2);transition:all .2s;text-align:left;display:flex;align-items:center;gap:6px}
.template-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--sky)}
.template-btn .tcat{width:20px;height:20px;border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:10px;flex-shrink:0}

/* ===== FORMAT SELECTOR ===== */
.format-search-wrap{position:relative;margin-bottom:.75rem}
.format-search-wrap input{width:100%;padding:.65rem 1rem .65rem 2.5rem;border:1.5px solid var(--border);border-radius:10px;font-size:.875rem;outline:none;background:var(--surface);transition:border-color .2s;font-family:inherit}
.format-search-wrap input:focus{border-color:var(--brand)}
.format-search-wrap .search-icon{position:absolute;left:.8rem;top:50%;transform:translateY(-50%);color:var(--text3);pointer-events:none}
.format-list{max-height:280px;overflow-y:auto;border:1px solid var(--border);border-radius:10px;background:var(--surface)}
.format-category{padding:.4rem .75rem;font-size:.7rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--text3);background:var(--surface2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1}
.format-item{display:flex;align-items:center;gap:.75rem;padding:.6rem .75rem;cursor:pointer;transition:all .15s;border-bottom:1px solid var(--border)}
.format-item:last-child{border-bottom:none}
.format-item:hover{background:var(--sky)}
.format-item.selected{background:var(--sky);color:var(--brand)}
.format-item.selected .format-ext{background:var(--brand);color:#fff}
.format-ext{font-family:var(--mono);font-size:.7rem;font-weight:500;background:var(--surface3);color:var(--text2);padding:2px 7px;border-radius:5px;min-width:38px;text-align:center}
.format-name{font-size:.82rem;color:var(--text2);flex:1}
.format-heart{margin-left:auto;cursor:pointer;color:var(--text3);font-size:13px;transition:color .2s;background:none;border:none;padding:3px}
.format-heart:hover,.format-heart.loved{color:#E11D48}

/* ===== SCROLLBAR ===== */
.format-list::-webkit-scrollbar{width:4px}
.format-list::-webkit-scrollbar-track{background:transparent}
.format-list::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}

/* ===== FILE OPTIONS ===== */
.option-row{display:flex;flex-direction:column;gap:.3rem;margin-bottom:.85rem}
.option-row label{font-size:.78rem;font-weight:500;color:var(--text2)}
.option-row input,.option-row select{width:100%;padding:.55rem .85rem;border:1.5px solid var(--border);border-radius:8px;font-size:.85rem;outline:none;font-family:inherit;color:var(--text);background:var(--surface);transition:border-color .2s}
.option-row input:focus,.option-row select:focus{border-color:var(--brand)}

/* ===== GENERATE BUTTON ===== */
.generate-btn{width:100%;padding:1rem;font-size:.95rem;font-weight:600;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;border:none;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;transition:all .3s;box-shadow:0 4px 15px rgba(79,110,247,.35);position:relative;overflow:hidden;letter-spacing:.01em}
.generate-btn::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,#fff2,transparent);opacity:0;transition:opacity .3s}
.generate-btn:hover::before{opacity:1}
.generate-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(79,110,247,.45)}
.generate-btn:active{transform:translateY(0)}
.generate-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:none}
.spinner.show{display:block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== PREVIEW ===== */
.preview-wrap{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-top:1rem}
.preview-header{padding:.6rem 1rem;background:var(--surface2);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;font-size:.78rem;color:var(--text3)}
.preview-header strong{color:var(--text2)}
#previewBox{min-height:100px;max-height:280px;overflow:auto;padding:1rem;font-family:var(--mono);font-size:.8rem;line-height:1.7;color:var(--text);background:var(--surface);white-space:pre-wrap;word-break:break-all}
#previewBox.md-render{font-family:'DM Sans',sans-serif;font-size:.875rem;white-space:normal;word-break:normal}
#previewBox.md-render h1,#previewBox.md-render h2,#previewBox.md-render h3{margin:.5rem 0;color:var(--text);font-weight:600}
#previewBox.md-render code{background:var(--surface3);padding:1px 5px;border-radius:4px;font-family:var(--mono);font-size:.8em}
#previewBox.md-render pre{background:var(--surface3);padding:.75rem;border-radius:8px;overflow:auto;margin:.5rem 0}
#previewBox.md-render p{margin:.4rem 0}
#previewBox.md-render ul,#previewBox.md-render ol{margin:.4rem 0 .4rem 1.2rem}

/* ===== RECENT + FAVORITES ===== */
.pill-list{display:flex;flex-wrap:wrap;gap:.4rem}
.pill{padding:4px 10px;border-radius:20px;font-size:.72rem;font-weight:500;cursor:pointer;border:1px solid var(--border);color:var(--text2);background:var(--surface);transition:all .2s;display:flex;align-items:center;gap:4px}
.pill:hover{border-color:var(--brand);color:var(--brand);background:var(--sky)}
.pill-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}

/* ===== HISTORY ===== */
.history-item{display:flex;align-items:center;gap:.75rem;padding:.65rem .85rem;border-radius:8px;margin-bottom:.4rem;border:1px solid var(--border);background:var(--surface);cursor:pointer;transition:all .2s}
.history-item:hover{border-color:var(--brand);background:var(--sky)}
.history-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;font-family:var(--mono);flex-shrink:0}
.history-info{flex:1;min-width:0}
.history-info strong{display:block;font-size:.82rem;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}
.history-info small{font-size:.72rem;color:var(--text3)}
.history-dl{color:var(--text3);font-size:11px;cursor:pointer;transition:color .2s;background:none;border:none;padding:4px}
.history-dl:hover{color:var(--brand)}

/* ===== TOAST ===== */
#toastContainer{position:fixed;bottom:1.5rem;right:1.5rem;z-index:999;display:flex;flex-direction:column;gap:.5rem;pointer-events:none}
.toast{display:flex;align-items:center;gap:.65rem;padding:.75rem 1.1rem;border-radius:12px;font-size:.85rem;font-weight:500;box-shadow:0 8px 24px rgba(0,0,0,.12);animation:toastIn .3s ease;pointer-events:all;max-width:340px;backdrop-filter:blur(10px)}
.toast.success{background:#fff;color:var(--success);border:1px solid #A7F3D0}
.toast.info{background:#fff;color:var(--brand);border:1px solid #BFDBFE}
.toast.error{background:#fff;color:var(--danger);border:1px solid #FECACA}
.toast.warn{background:#fff;color:var(--warning);border:1px solid #FDE68A}
.toast-icon{width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0}
.toast.success .toast-icon{background:var(--success-bg)}
.toast.info .toast-icon{background:var(--sky)}
.toast.error .toast-icon{background:var(--danger-bg)}
.toast.fade-out{animation:toastOut .3s ease forwards}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
@keyframes toastOut{to{opacity:0;transform:translateX(20px)}}

/* ===== PROGRESS ===== */
.progress-bar-wrap{height:3px;background:var(--surface3);border-radius:2px;overflow:hidden;margin:.5rem 0;display:none}
.progress-bar-wrap.show{display:block}
.progress-bar{height:100%;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:2px;width:0%;transition:width .3s}

/* ===== SIZE ESTIMATOR ===== */
.size-badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:6px;font-size:.75rem;font-weight:500;background:var(--sky);color:var(--brand)}

/* ===== STATS ROW ===== */
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;margin-bottom:1rem}
.stat-box{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:.6rem .75rem;text-align:center}
.stat-box strong{display:block;font-size:1rem;font-weight:600;color:var(--text)}
.stat-box small{font-size:.7rem;color:var(--text3)}

/* ===== MULTI-FILE ===== */
.multi-file-list{display:flex;flex-direction:column;gap:.4rem;margin-top:.75rem}
.multi-file-item{display:flex;align-items:center;gap:.6rem;padding:.5rem .75rem;border:1px solid var(--border);border-radius:8px;background:var(--surface);font-size:.8rem}
.multi-file-item .mfi-ext{font-family:var(--mono);font-size:.7rem;background:var(--sky);color:var(--brand);padding:2px 6px;border-radius:4px}
.multi-file-item .mfi-name{flex:1;color:var(--text2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mfi-remove{background:none;border:none;cursor:pointer;color:var(--text3);font-size:13px;transition:color .2s;padding:2px}
.mfi-remove:hover{color:var(--danger)}

/* ===== AI SUGGESTION ===== */
.ai-box{background:linear-gradient(135deg,#EEF2FF,#F5F3FF);border:1px solid #C7D2FE;border-radius:var(--radius);padding:1rem 1.2rem;margin-top:1rem}
.ai-box-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;font-size:.8rem;font-weight:600;color:var(--accent)}
.ai-box-header .ai-star{width:18px;height:18px;background:var(--accent);border-radius:5px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:9px}
.ai-suggestions{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.4rem}
.ai-sug{padding:4px 10px;background:#fff;border:1px solid #C7D2FE;border-radius:6px;font-size:.75rem;color:var(--accent);cursor:pointer;transition:all .2s}
.ai-sug:hover{background:var(--accent-light);border-color:var(--accent)}

/* ===== DOWNLOAD SECTION ===== */
.dl-section{background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:var(--radius-lg);padding:1.5rem;color:#fff;margin-top:1.5rem;position:relative;overflow:hidden}
.dl-section::before{content:'';position:absolute;top:-30px;right:-30px;width:120px;height:120px;background:rgba(255,255,255,.08);border-radius:50%}
.dl-section::after{content:'';position:absolute;bottom:-20px;left:-20px;width:80px;height:80px;background:rgba(255,255,255,.06);border-radius:50%}
.dl-title{font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;opacity:.8;margin-bottom:.5rem}
.dl-filename{font-size:1.1rem;font-weight:600;margin-bottom:1.2rem;display:flex;align-items:center;gap:.5rem;font-family:var(--mono)}
.dl-filename .dl-icon{width:32px;height:32px;background:rgba(255,255,255,.2);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px}
.dl-btns{display:flex;gap:.75rem;flex-wrap:wrap;position:relative;z-index:1}
.dl-btn{flex:1;min-width:100px;padding:.7rem;border-radius:10px;border:none;font-size:.85rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.4rem;transition:all .3s;font-family:inherit}
.dl-btn-main{background:#fff;color:var(--brand)}
.dl-btn-main:hover{background:#EEF2FF;transform:translateY(-1px)}
.dl-btn-ghost{background:rgba(255,255,255,.15);color:#fff;border:1.5px solid rgba(255,255,255,.3)}
.dl-btn-ghost:hover{background:rgba(255,255,255,.25);transform:translateY(-1px)}

/* ===== TAB PANELS ===== */
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ===== SCROLLBAR TINY ===== */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  nav{padding:0 1rem}
  .hero{padding:2rem 1rem 1rem}
  .main{padding:1rem;gap:1rem}
  .nav-links{display:none}
  .hero-stats{gap:1rem}
  .stats-row{grid-template-columns:repeat(3,1fr)}
}

/* ===== MISC ===== */
.sep{border:none;border-top:1px solid var(--border);margin:.85rem 0}
.flex-row{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}
.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}
.hidden{display:none!important}
.right{text-align:right}
.text-muted{color:var(--text3);font-size:.8rem}
.badge{display:inline-flex;align-items:center;padding:3px 8px;border-radius:20px;font-size:.7rem;font-weight:600}
.badge-blue{background:var(--sky);color:var(--brand)}
.badge-green{background:var(--success-bg);color:var(--success)}
.badge-purple{background:var(--accent-light);color:var(--accent)}
kbd{background:var(--surface3);border:1px solid var(--border2);border-radius:4px;padding:1px 5px;font-family:var(--mono);font-size:.7rem;color:var(--text2)}