:root { --p: #2563eb; --ph: #1d4ed8; --bg: #f8fafc; --card: #ffffff; --border: #e2e8f0; --text: #0f172a; --sub: #64748b; }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif; background: var(--bg); color: var(--text); padding: 18px 12px; min-height: 100vh; }
.container { max-width: 980px; margin: 0 auto; }
header { text-align: center; margin-bottom: 16px; }
header h1 { font-size: 1.6rem; color: #0f172a; margin-bottom: 4px; }
header p { font-size: 0.88rem; color: var(--sub); }
.badge { display: inline-block; background: #ecfdf5; color: #059669; font-size: 0.76rem; padding: 3px 10px; border-radius: 9999px; margin-top: 6px; border: 1px solid #a7f3d0; font-weight: 600; }

.tabs { display: flex; background: #e2e8f0; border-radius: 8px; padding: 3px; margin-bottom: 14px; gap: 4px; overflow-x: auto; }
.tab-btn { flex: 1; min-width: 130px; text-align: center; padding: 8px 10px; border: none; background: transparent; cursor: pointer; font-size: 0.88rem; font-weight: 700; color: var(--sub); border-radius: 6px; }
.tab-btn.active { background: #fff; color: var(--p); box-shadow: 0 1px 4px rgba(0,0,0,0.06); }

.panel { display: none; }
.panel.active { display: block; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; box-shadow: 0 4px 12px rgba(0,0,0,0.03); }

.sub-nav { display: flex; gap: 8px; margin-bottom: 14px; }
.sub-btn { background: #f1f5f9; border: 1px solid var(--border); padding: 6px 14px; border-radius: 6px; font-size: 0.85rem; font-weight: 600; cursor: pointer; color: var(--sub); }
.sub-btn.active { background: var(--p); color: #fff; border-color: var(--p); }

textarea, input[type="text"] { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.88rem; outline: none; font-family: monospace; }
textarea:focus, input[type="text"]:focus { border-color: var(--p); }
textarea { resize: vertical; min-height: 80px; }

.btn-group { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.btn { background: var(--p); color: #fff; border: none; padding: 7px 14px; border-radius: 6px; cursor: pointer; font-size: 0.84rem; font-weight: 600; }
.btn:hover { background: var(--ph); }
.btn.sec { background: #475569; }
.btn.out { background: transparent; color: var(--p); border: 1px solid var(--p); }
.btn-sub { background: #f1f5f9; border: 1px solid var(--border); padding: 5px 12px; border-radius: 6px; font-size: 0.82rem; cursor: pointer; font-weight: 600; }

.drop-zone { border: 2px dashed #cbd5e1; border-radius: 10px; padding: 22px 14px; text-align: center; background: #fafafa; cursor: pointer; margin-bottom: 14px; }
.drop-zone:hover { border-color: var(--p); background: #f0f7ff; }
.drop-zone p { font-size: 0.82rem; color: var(--sub); margin-top: 4px; }

.hash-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 10px; margin-top: 14px; }
@media (max-width: 480px) { .hash-grid { grid-template-columns: 1fr; } }
.hash-row { background: #f8fafc; border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; }
.h-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.h-name { font-weight: 700; font-size: 0.82rem; color: #1e293b; }
.h-bit { font-size: 0.72rem; color: var(--sub); }
.cp-btn { background: #fff; border: 1px solid var(--border); padding: 2px 6px; border-radius: 4px; font-size: 0.72rem; cursor: pointer; }
.h-val { background: #fff; font-size: 0.8rem; padding: 4px 6px; border: 1px solid #cbd5e1; }