:root{--primary: #6366f1;--primary-hover: #4f46e5;--secondary: #ec4899;--bg-dark: #0f172a;--bg-card: #1e293b;--text-main: #f8fafc;--text-muted: #94a3b8;--glass: rgba(30, 41, 59, .7);--border: rgba(148, 163, 184, .1)}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-dark);color:var(--text-main);min-height:100vh;overflow-x:hidden;background:radial-gradient(circle at top left,#1e1b4b,transparent 40%),radial-gradient(circle at bottom right,#312e81,transparent 40%),var(--bg-dark)}*{box-sizing:border-box}h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.025em}button{cursor:pointer;border:none;font-family:inherit;transition:all .3s ease}input,textarea{font-family:inherit}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:var(--bg-card);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary)}.app-container{max-width:1200px;margin:0 auto;padding:2rem;min-height:100vh;display:flex;flex-direction:column;gap:2rem;animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-10px)}to{opacity:1;transform:translate(0)}}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 2rem;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:16px;box-shadow:0 4px 30px #0000001a;position:sticky;top:1rem;z-index:50}.logo{font-size:1.5rem;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800;letter-spacing:-.03em}.nav-links{display:flex;gap:.75rem;background:#0f172a4d;padding:.25rem;border-radius:12px;border:1px solid var(--border)}.nav-btn{background:transparent;color:var(--text-muted);padding:.5rem 1.25rem;border-radius:8px;font-weight:600;font-size:.95rem;transition:all .3s ease}.nav-btn.active{background:#6366f126;color:var(--primary);box-shadow:0 0 0 1px #6366f133}.nav-btn:hover:not(.active){color:var(--text-main);background:#ffffff0d}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;padding:2.5rem;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;animation:fadeIn .4s ease-out}.page-header{margin-bottom:2rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.page-title{font-size:1.875rem;background:linear-gradient(to right,#fff,#94a3b8);-webkit-background-clip:text;background-clip:text;color:transparent}.form-group{margin-bottom:1.75rem;animation:slideIn .3s ease-out backwards}.form-group:nth-child(1){animation-delay:.1s}.form-group:nth-child(2){animation-delay:.2s}.form-group:nth-child(3){animation-delay:.3s}.form-label{display:block;margin-bottom:.5rem;color:var(--text-muted);font-size:.9rem;font-weight:500;margin-left:.25rem}.form-input,.form-textarea{width:100%;padding:.875rem 1.25rem;background:#0f172a99;border:1px solid var(--border);border-radius:12px;color:var(--text-main);font-size:1rem;transition:all .2s cubic-bezier(.4,0,.2,1)}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--primary);background:#0f172acc;box-shadow:0 0 0 4px #6366f126;transform:translateY(-1px)}.file-upload-container{display:flex;gap:1rem;align-items:center;margin-bottom:1rem;flex-wrap:wrap}.file-upload-btn{display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;padding:.75rem 1.25rem;border-radius:10px;border:1px solid var(--border);background:#1e293b80;color:var(--text-main);font-weight:500;font-size:.9rem;transition:all .2s}.file-upload-btn:hover{background:#1e293bcc;border-color:var(--primary);transform:translateY(-1px)}.file-hint{font-size:.85rem;color:var(--text-muted)}.submit-btn{width:100%;padding:1rem;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-weight:600;border-radius:12px;font-size:1.1rem;margin-top:1.5rem;box-shadow:0 4px 15px #6366f159;position:relative;overflow:hidden}.submit-btn:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(rgba(255,255,255,.2),transparent);opacity:0;transition:.3s}.submit-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px #6366f173}.submit-btn:hover:after{opacity:1}.submit-btn:disabled{opacity:.7;cursor:not-allowed;transform:none;filter:grayscale(.5)}.status-msg{padding:1rem 1.25rem;border-radius:12px;margin-bottom:2rem;display:flex;align-items:center;gap:.75rem;font-weight:500;animation:slideIn .3s ease-out}.status-success{background:#22c55e1a;color:#4ade80;border:1px solid rgba(34,197,94,.2)}.status-error{background:#ef44441a;color:#f87171;border:1px solid rgba(239,68,68,.2)}.table-container{overflow-x:auto;border-radius:12px;border:1px solid var(--border);background:#0f172a4d}.history-table{width:100%;border-collapse:collapse;min-width:600px}.history-table th{text-align:left;padding:1.25rem;color:var(--text-muted);font-weight:600;font-size:.9rem;border-bottom:1px solid var(--border);background:#0f172a80;white-space:nowrap}.history-table td{padding:1.25rem;border-bottom:1px solid var(--border);color:var(--text-main);font-size:.95rem}.history-table tr:hover td{background:#ffffff05}.history-table tr:last-child td{border-bottom:none}.recipients-cell{max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{padding:.35rem .85rem;border-radius:9999px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;display:inline-block}.badge-sent{background:#22c55e26;color:#4ade80;box-shadow:0 0 0 1px #22c55e33}.badge-failed{background:#ef444426;color:#f87171;box-shadow:0 0 0 1px #ef444433}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-muted);display:flex;flex-direction:column;align-items:center;gap:1rem}.refresh-btn{background:#1e293b80;border:1px solid var(--border);color:var(--text-main);padding:.5rem 1rem;border-radius:8px;font-size:.9rem;display:flex;align-items:center;gap:.5rem;cursor:pointer;transition:all .2s}.refresh-btn:hover{background:var(--bg-card);border-color:var(--primary)}.refresh-btn:disabled{opacity:.6;cursor:not-allowed}@media(max-width:768px){.app-container{padding:1rem;gap:1.5rem}.navbar{flex-direction:column;gap:1rem;padding:1rem}.nav-links{width:100%;justify-content:center}.nav-btn{flex:1;text-align:center;padding:.6rem}.card{padding:1.5rem;border-radius:16px}.page-title{font-size:1.5rem}.page-header{flex-direction:column;align-items:flex-start;gap:1rem}.refresh-btn{width:100%;justify-content:center}}