@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:#8B5CF6;--primary-light:#A78BFA;--primary-glow:rgba(139,92,246,.2);
  --accent:#34D399;--red:#EF4444;
  --bg:#0F172A;--bg2:#1E293B;--bg-card:rgba(30,41,59,.8);
  --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(139,92,246,.05) 0%,transparent 50%);pointer-events:none}
.app{position:relative;z-index:1;max-width:800px;margin:0 auto;padding:24px 20px 60px}
.hdr{text-align:center;padding:40px 0 24px}
.hdr__icon{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:var(--radius);background:linear-gradient(135deg,var(--primary),var(--accent));font-size:32px;margin-bottom:16px;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(-5px)}}
.hdr h1{font-size:2rem;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:.95rem;margin:8px auto 0}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;backdrop-filter:blur(16px);margin-bottom:16px}
.card-title{font-size:.9rem;font-weight:700;margin-bottom:10px}
/* Expression */
.expr-bar{padding:16px}
.expr-row{display:flex;gap:8px;align-items:center}
.cron-input{flex:1;padding:12px 16px;font-family:var(--mono);font-size:1.1rem;font-weight:600;background:var(--bg);border:2px solid var(--border);border-radius:var(--radius-sm);color:var(--primary-light);outline:none;text-align:center;letter-spacing:2px}
.cron-input:focus{border-color:var(--primary)}
.human-text{margin-top:8px;font-size:.85rem;color:var(--accent);text-align:center}
.error-text{margin-top:4px;font-size:.8rem;color:var(--red);text-align:center}
.btn{padding:9px 16px;font-family:var(--font);font-size:.82rem;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:var(--tr)}
.btn-sm{padding:6px 12px;font-size:.75rem}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:#7C3AED}
.btn-outline{background:transparent;color:var(--text2);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
/* Presets */
.preset-grid{display:flex;flex-wrap:wrap;gap:6px}
.preset{padding:6px 12px;font-size:.75rem;font-weight:600;font-family:var(--mono);background:var(--bg);border:1px solid var(--border);border-radius:20px;color:var(--text2);cursor:pointer;transition:var(--tr)}
.preset:hover{border-color:var(--primary);color:var(--primary)}
/* Fields */
.field-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.field-group{display:flex;flex-direction:column;gap:4px}
.field-group label{font-size:.72rem;font-weight:600;color:var(--text3)}
.select{padding:8px 6px;font-family:var(--mono);font-size:.78rem;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none}
.select:focus{border-color:var(--primary)}
/* Timeline */
.timeline{max-height:400px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}
.tl-item{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--bg);border-radius:var(--radius-sm);font-size:.78rem}
.tl-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex-shrink:0;transition:.3s ease}
.tl-item:hover .tl-dot{box-shadow:0 0 8px var(--primary);transform:scale(1.3)}
.tl-num{color:var(--text3);font-size:.68rem;width:24px}
.tl-time{color:var(--text);font-family:var(--mono);font-weight:500}
.tl-rel{color:var(--text3);font-size:.72rem;margin-left:auto}
.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:.85rem;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:640px){.field-grid{grid-template-columns:repeat(3,1fr)}.expr-row{flex-direction:column}.cron-input{text-align:center}.app{padding:16px 12px 48px}.hdr h1{font-size:1.5rem}}
::-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)}