.page { max-width: 900px; margin: 32px auto; padding: 0 20px; }
.page h1 { font-size: 36px; color: #fff; margin-bottom: 8px; letter-spacing: -0.5px; }
.page .subtitle { color: #888; font-size: 15px; margin-bottom: 24px; }
.page label { display: block; font-size: 12px; color: #aaa; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.jw-alg { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.jw-alg label { margin: 0; }
.jw-alg select { padding: 8px 14px; background: #141414; border: 1px solid #262626; color: #fff; font-size: 14px; border-radius: 8px; font-family: inherit; cursor: pointer; }
.jw-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.jw-row textarea, .jw-row input { width: 100%; background: #141414; border: 1px solid #262626; color: #e1e1e1; font-size: 13px; padding: 12px 14px; border-radius: 10px; font-family: 'SF Mono', Monaco, monospace; resize: vertical; line-height: 1.5; outline: none; }
.jw-row textarea { min-height: 140px; }
.jw-row textarea:focus, .jw-row input:focus { border-color: #ff4444; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; font-size: 14px; margin-bottom: 14px; }
.err { min-height: 18px; font-size: 12px; color: #ff7070; margin-bottom: 10px; }
.jw-out-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 8px; }
.jw-out-head label { margin: 0; }
.copy-btn { padding: 6px 14px; background: #1f1f1f; border: 1px solid #333; color: #ccc; font-size: 13px; font-weight: 500; border-radius: 6px; cursor: pointer; font-family: inherit; transition: all 0.15s; }
.copy-btn:hover { background: #2a2a2a; border-color: #444; color: #fff; }
.copy-btn.copied { border-color: #4ade80; color: #4ade80; }
.jwt-output { padding: 18px 20px; background: #0f0f0f; border: 1px solid #1f1f1f; border-radius: 12px; color: #fff; font-size: 14px; font-family: 'SF Mono', Monaco, monospace; word-break: break-all; line-height: 1.5; min-height: 80px; }
.jwt-output.empty { color: #555; }
.jwt-output .h { color: #ff4444; }
.jwt-output .p { color: #ffce3a; }
.jwt-output .s { color: #66aaff; }
@media (max-width: 700px) { .page h1 { font-size: 28px; } .jw-row { grid-template-columns: 1fr; } }