@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#EF4444;--primary-light:#FCA5A5;--primary-glow:rgba(239,68,68,.18);
  --accent:#F59E0B;--green:#22C55E;--blue:#3B82F6;
  --bg:#0F172A;--bg2:#1E293B;--bg-card:rgba(30,41,59,.85);
  --text:#F1F5F9;--text2:#94A3B8;--text3:#64748B;
  --border:rgba(148,163,184,.1);--radius:12px;--radius-sm:8px;
  --font:'Inter',system-ui,sans-serif;--mono:'JetBrains Mono',monospace;
  --tr:.25s ease;
}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}
body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse at 50% 0%,rgba(239,68,68,.03) 0%,transparent 50%);pointer-events:none}
.app{position:relative;z-index:1;max-width:1100px;margin:0 auto;padding:24px 16px 60px}
.hdr{text-align:center;padding:32px 0 20px}
.hdr__icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:var(--radius);background:linear-gradient(135deg,var(--primary),#DC2626);font-size:28px;margin-bottom:12px;box-shadow:0 8px 30px var(--primary-glow);animation:fl 3s ease-in-out infinite}
@keyframes fl{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.hdr h1{font-size:1.8rem;font-weight:800;background:linear-gradient(135deg,var(--text),var(--primary-light));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hdr p{color:var(--text2);font-size:.9rem;margin:6px auto 0}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;backdrop-filter:blur(16px);margin-bottom:12px}
.card-title{font-size:.85rem;font-weight:700;margin-bottom:8px}
.toolbar-row{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.input{padding:7px 10px;font-family:var(--font);font-size:.78rem;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none;flex:1;min-width:120px}
.input:focus{border-color:var(--primary)}
.input-sm{max-width:120px;flex:0 0 auto}
.btn{padding:7px 14px;font-family:var(--font);font-size:.78rem;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:var(--tr)}
.btn-sm{padding:5px 10px;font-size:.72rem}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:#DC2626}
.btn-outline{background:transparent;color:var(--text2);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.upload-btn{cursor:pointer}
.dropzone{text-align:center;padding:50px 20px;border:2px dashed var(--border);cursor:pointer;transition:var(--tr)}
.dropzone.dragover{border-color:var(--primary);background:var(--primary-glow)}
.drop-content p{color:var(--text2);font-size:.9rem;margin-top:8px}
/* Hex layout */
.hex-layout{display:grid;grid-template-columns:1fr 260px;gap:12px;align-items:start}
.hex-card{overflow:hidden;padding:0}
.hex-header{display:flex;gap:0;padding:8px 12px;background:var(--bg2);font-family:var(--mono);font-size:.68rem;font-weight:600;color:var(--text3);border-bottom:1px solid var(--border)}
.hex-header span:first-child{width:72px;flex-shrink:0}
.hex-header span:nth-child(2){flex:1}
.hex-header span:last-child{width:140px;flex-shrink:0;text-align:right}
.hex-body{max-height:500px;overflow-y:auto;font-family:var(--mono);font-size:.72rem;line-height:1.8}
.hex-row{display:flex;padding:0 12px;cursor:pointer;transition:background .1s}
.hex-row:hover{background:rgba(239,68,68,.04)}
.hex-offset{width:72px;color:var(--text3);flex-shrink:0;user-select:none}
.hex-bytes{flex:1;display:flex;gap:0;flex-wrap:wrap}
.hex-byte{width:22px;text-align:center;color:var(--text2);cursor:pointer;border-radius:2px}
.hex-byte:hover{background:rgba(239,68,68,.12);color:var(--text)}
.hex-byte.selected{background:var(--primary);color:#fff}
.hex-byte.highlight{background:rgba(245,158,11,.2);color:var(--accent)}
.hex-byte.null{color:var(--text3);opacity:.4}
.hex-ascii{width:140px;flex-shrink:0;color:var(--text3);letter-spacing:1px;word-break:break-all}
.hex-ascii .printable{color:var(--text2)}
.hex-footer{padding:6px 12px;font-size:.68rem;color:var(--text3);border-top:1px solid var(--border);background:var(--bg2)}
/* Inspector */
.inspector-card{padding:14px}
.insp-row{display:flex;justify-content:space-between;padding:4px 0;font-size:.78rem;border-bottom:1px solid var(--border)}
.insp-key{color:var(--text3);font-weight:600}
.insp-val{font-family:var(--mono);color:var(--primary-light)}
.bm-item{display:flex;gap:6px;align-items:center;padding:4px 8px;background:var(--bg);border-radius:var(--radius-sm);margin-bottom:3px;font-size:.72rem;cursor:pointer}
.bm-item:hover{background:rgba(239,68,68,.06)}
.bm-offset{font-family:var(--mono);color:var(--accent);font-weight:600}
.bm-rm{color:var(--text3);cursor:pointer;margin-left:auto}.bm-rm:hover{color:var(--primary)}
.header-badge{display:inline-block;padding:4px 10px;background:rgba(239,68,68,.1);border-radius:var(--radius-sm);font-weight:700;font-size:.85rem;color:var(--primary-light)}
.empty{text-align:center;color:var(--text3);font-size:.78rem;padding:16px}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);padding:10px 20px;background:var(--bg2);border:1px solid var(--primary);border-radius:var(--radius-sm);color:var(--text);font-size:.82rem;font-weight:500;z-index:1000;opacity:0;transition:all .3s ease;pointer-events:none}
.toast.visible{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:700px){.hex-layout{grid-template-columns:1fr}.toolbar-row{flex-direction:column}.app{padding:16px 10px 48px}.hdr h1{font-size:1.4rem}}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--bg2);border-radius:3px}
::selection{background:var(--primary);color:var(--bg)}