*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:#0f172a;color:#f1f5f9;min-height:100vh;overflow-x:hidden}
.container{max-width:960px;margin:0 auto;padding:24px 20px}
.page-header{background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#a78bfa 100%);padding:72px 24px 56px;text-align:center;position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.08) 0%,transparent 60%);animation:headerGlow 8s ease-in-out infinite}
@keyframes headerGlow{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,20px)}}
.page-header h1{font-size:2.6rem;font-weight:800;color:#fff;margin-bottom:10px;position:relative;text-shadow:0 2px 20px rgba(0,0,0,0.2)}
.page-header p{color:rgba(255,255,255,0.85);font-size:1.15rem;position:relative;font-weight:400}
.nav{display:flex;gap:5px;justify-content:center;flex-wrap:wrap;margin:20px 0;padding:5px;background:rgba(30,41,59,0.8);backdrop-filter:blur(12px);border-radius:16px;border:1px solid rgba(71,85,105,0.4)}
.nav-btn{padding:10px 18px;border:none;background:transparent;color:#94a3b8;font-size:.9rem;font-weight:600;border-radius:10px;cursor:pointer;transition:all .25s;white-space:nowrap}
.nav-btn:hover{background:#334155;color:#f1f5f9;transform:translateY(-2px)}
.nav-btn.active{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;box-shadow:0 4px 12px rgba(99,102,241,0.4)}
.card{background:rgba(30,41,59,0.7);backdrop-filter:blur(8px);border:1px solid rgba(71,85,105,0.3);border-radius:16px;padding:28px;margin-bottom:20px;box-shadow:0 4px 24px rgba(0,0,0,0.3)}
.card h2{font-size:1.35rem;margin-bottom:6px;color:#e2e8f0;font-weight:700}
.subtitle{color:#94a3b8;margin-bottom:20px;font-size:.93rem;line-height:1.5}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;margin-bottom:8px;color:#94a3b8;font-size:.82rem;text-transform:uppercase;letter-spacing:.6px}
input[type='text'],input[type='number'],textarea,select{width:100%;padding:13px 16px;background:#334155;border:1px solid #475569;border-radius:10px;color:#f1f5f9;font-size:1rem;transition:all .25s;font-family:inherit}
input:focus,textarea:focus,select:focus{outline:none;border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,0.15)}
textarea{resize:vertical;min-height:140px}
.btn{padding:12px 28px;border:none;border-radius:10px;font-size:.97rem;font-weight:600;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:#fff}
.btn-primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);box-shadow:0 4px 14px rgba(99,102,241,0.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(99,102,241,0.5)}
.btn-success{background:linear-gradient(135deg,#22c55e,#16a34a);box-shadow:0 4px 14px rgba(34,197,94,0.3)}
.btn-success:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(34,197,94,0.5)}
.btn-group{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.result-box{background:#334155;border:1px solid #475569;border-radius:12px;padding:22px;margin-top:16px;text-align:center}
.value-box{font-size:1.5rem;font-weight:700;color:#a78bfa;word-break:break-all;padding:18px;background:rgba(15,23,42,0.6);border-radius:10px;margin:14px 0;text-align:center;border:1px solid rgba(99,102,241,0.2)}
.stats-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px}
.stat-card{background:rgba(15,23,42,0.6);border-radius:12px;padding:16px 20px;flex:1;min-width:110px;text-align:center;border:1px solid rgba(71,85,105,0.3)}
.stat-card .num{font-size:1.4rem;font-weight:700;color:#a78bfa}
.stat-card .lbl{color:#94a3b8;font-size:.78rem;text-transform:uppercase;letter-spacing:.6px;margin-top:2px}
.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px;margin-top:28px}
.tool-card{background:rgba(30,41,59,0.6);border:1px solid rgba(71,85,105,0.3);border-radius:18px;padding:32px 24px;cursor:pointer;transition:all .3s;text-align:center;position:relative;overflow:hidden}
.tool-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#6366f1,#8b5cf6,#c084fc);opacity:0;transition:opacity .3s}
.tool-card:hover{border-color:#6366f1;transform:translateY(-6px);box-shadow:0 12px 32px rgba(99,102,241,0.2)}
.tool-card:hover::before{opacity:1}
.tool-card .icon{font-size:2.8rem;margin-bottom:14px;display:block;transition:transform .3s}
.tool-card:hover .icon{transform:scale(1.15) rotate(-5deg)}
.tool-card h3{font-size:1.1rem;margin-bottom:8px;color:#e2e8f0;font-weight:700}
.tool-card p{color:#94a3b8;font-size:.87rem;line-height:1.5}
.strength-bar{height:8px;border-radius:4px;background:rgba(15,23,42,0.6);margin-top:10px;overflow:hidden}
.strength-fill{height:100%;border-radius:4px;transition:width .3s,background .3s}
.checkbox-group{display:flex;flex-wrap:wrap;gap:18px;margin:14px 0}
.checkbox-label{display:flex;align-items:center;gap:9px;cursor:pointer;font-weight:normal;text-transform:none;color:#f1f5f9}
.checkbox-label input[type='checkbox']{width:18px;height:18px;accent-color:#6366f1}
.color-preview{width:100%;height:180px;border-radius:14px;cursor:crosshair;transition:background .15s}
.palette{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:16px}
.palette-color{width:68px;height:68px;border-radius:12px;cursor:pointer;border:2px solid transparent;transition:all .25s;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700}
.palette-color:hover{transform:scale(1.2);border-color:#fff;box-shadow:0 4px 16px rgba(0,0,0,0.3)}
.upload-area{border:2px dashed #475569;border-radius:14px;padding:52px 24px;text-align:center;cursor:pointer;transition:all .3s;background:rgba(15,23,42,0.3)}
.upload-area:hover{border-color:#6366f1;background:rgba(99,102,241,0.08);transform:scale(1.01)}
.upload-area .icon{font-size:3rem;margin-bottom:12px;display:block}
.image-preview-container{text-align:center;margin-top:16px;overflow:hidden}
.image-preview-container img{max-width:100%;max-height:420px;border-radius:12px;border:1px solid #475569}
input[type='range']{width:100%;height:8px;-webkit-appearance:none;background:rgba(15,23,42,0.6);border-radius:4px;outline:none}
input[type='range']::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(99,102,241,0.4)}
.range-value{text-align:center;font-size:1.3rem;font-weight:700;color:#a78bfa;margin:10px 0}
.copy-btn{background:#334155;border:1px solid #475569;color:#94a3b8;padding:9px 18px;border-radius:8px;cursor:pointer;font-size:.87rem;transition:all .2s;display:inline-flex;align-items:center;gap:6px}
.copy-btn:hover{color:#f1f5f9;border-color:#6366f1;background:rgba(99,102,241,0.15)}
.toast{position:fixed;bottom:28px;right:28px;background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;padding:14px 28px;border-radius:12px;font-weight:600;z-index:999;transform:translateY(120px) scale(.95);opacity:0;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 8px 24px rgba(34,197,94,0.4)}
.toast.show{transform:translateY(0) scale(1);opacity:1}
.freq-bar{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.freq-name{min-width:120px;font-weight:600;color:#e2e8f0;text-transform:capitalize;font-size:.9rem}
.freq-track{flex:1;height:28px;background:rgba(15,23,42,0.6);border-radius:6px;overflow:hidden}
.freq-fill{height:100%;background:linear-gradient(90deg,#6366f1,#8b5cf6,#c084fc);border-radius:6px;display:flex;align-items:center;padding-left:10px;font-size:.8rem;font-weight:700;color:#fff;min-width:40px;transition:width .5s}
.freq-count{min-width:36px;text-align:right;font-weight:700;color:#a78bfa;font-size:.9rem}
input[type='color']{width:90px;height:48px;border:none;cursor:pointer;background:none;padding:0;vertical-align:middle}
.pdf-progress-wrap{margin-top:16px;text-align:center}
.pdf-bar{height:10px;border-radius:5px;background:rgba(15,23,42,0.6);overflow:hidden;margin-bottom:8px}
.pdf-fill{height:100%;border-radius:5px;transition:width .3s;background:linear-gradient(90deg,#6366f1,#8b5cf6)}
.search-item{padding:10px 14px;margin-bottom:6px;background:#334155;border-radius:8px;border-left:3px solid #6366f1;font-size:.9rem;line-height:1.5}
.search-item mark{background:rgba(245,158,11,0.3);color:#fbbf24;padding:1px 4px;border-radius:3px}
.file-list{list-style:none;margin-top:16px;}.file-item{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#334155;border:1px solid #475569;border-radius:8px;margin-bottom:6px;font-size:.9rem;border-left:4px solid #6366f1}
.file-info{display:flex;align-items:center;gap:8px;min-width:0;flex:1}.file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#e2e8f0;font-weight:500}
.file-size{font-size:.78rem;padding:3px 10px;border-radius:9999px;background:rgba(15,23,42,0.6);color:#94a3b8;flex-shrink:0}
.remove-btn{width:28px;height:28px;border:none;background:rgba(127,29,29,0.3);color:#f87171;border-radius:50%;cursor:pointer;font-size:.87rem;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.remove-btn:hover{background:rgba(127,29,29,0.6)}
.toast.error{background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 8px 24px rgba(239,68,68,0.4)}.toast.info{background:linear-gradient(135deg,#6366f1,#8b5cf6);box-shadow:0 8px 24px rgba(99,102,241,0.4)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.footer{text-align:center;padding:48px 0 28px;color:#94a3b8;font-size:.87rem}
.footer a:hover{text-decoration:underline}
@media(max-width:640px){.page-header{padding:52px 18px 40px}.page-header h1{font-size:1.8rem}.nav-btn{padding:7px 10px;font-size:.8rem}.card{padding:20px}.dashboard-grid{grid-template-columns:1fr}.tool-card{padding:24px 18px}.stats-row{gap:10px}}