/* ================================================
   Task 1 — Design System
   ================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-primary:   #0f0f1a;
  --bg-card:      rgba(255,255,255,0.05);
  --bg-card-hover:rgba(255,255,255,0.08);
  --accent:       #6c63ff;
  --accent-glow:  rgba(108,99,255,0.35);
  --success:      #2ecc71;
  --danger:       #e74c3c;
  --text:         #e8e8f0;
  --text-muted:   #8888a8;
  --border:       rgba(255,255,255,0.08);
  --radius:       14px;
  --transition:   .25s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin:0; padding:0; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-primary);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(108,99,255,.15), transparent),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(99,200,255,.08), transparent);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #8b83ff; }

/* ---- Navbar ---- */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(15,15,26,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky; top:0; z-index: 100;
}
.navbar .brand { font-size:1.25rem; font-weight:700; color: var(--accent); }
.navbar .nav-links { display:flex; gap:1.2rem; align-items:center; }
.navbar .nav-links a { font-size:.9rem; font-weight:500; color:var(--text-muted); }
.navbar .nav-links a:hover { color:var(--text); }
.navbar .user-badge {
  background: var(--bg-card); padding:.35rem .9rem; border-radius:20px;
  font-size:.85rem; color:var(--accent); border:1px solid var(--border);
}

/* ---- Container ---- */
.container { max-width:960px; margin:0 auto; padding:2rem 1.5rem; }

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,.25);
}
.card-narrow { max-width:480px; margin:3rem auto; }

.card h2 {
  font-size:1.6rem; font-weight:700; margin-bottom:.3rem;
  background: linear-gradient(135deg, var(--accent), #63c6ff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.card .subtitle { color:var(--text-muted); margin-bottom:1.8rem; font-size:.92rem; }

/* ---- Forms ---- */
.form-group { margin-bottom:1.15rem; }
.form-group label {
  display:block; font-size:.82rem; font-weight:600;
  color:var(--text-muted); margin-bottom:.35rem; text-transform:uppercase; letter-spacing:.05em;
}
.form-group input,
.form-group textarea,
.form-group select {
  width:100%; padding:.7rem 1rem;
  background: rgba(255,255,255,0.04);
  border:1px solid var(--border); border-radius:8px;
  color:var(--text); font-size:.95rem; font-family:inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline:none; border-color:var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group textarea { resize:vertical; min-height:70px; }

.form-row { display:grid; grid-template-columns:1fr 1fr; gap:0 1rem; }

/* ---- Buttons ---- */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:.4rem;
  padding:.72rem 1.6rem; border:none; border-radius:8px;
  font-family:inherit; font-size:.92rem; font-weight:600;
  cursor:pointer; transition: all var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  color:#fff; box-shadow: 0 4px 15px var(--accent-glow);
}
.btn-primary:hover { transform:translateY(-1px); box-shadow:0 6px 20px var(--accent-glow); }

.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { background:#c0392b; }

.btn-sm { padding:.4rem .9rem; font-size:.82rem; border-radius:6px; }

.btn-outline {
  background:transparent; border:1px solid var(--border); color:var(--text-muted);
}
.btn-outline:hover { border-color:var(--accent); color:var(--accent); }

/* ---- Flash Messages ---- */
.flash {
  padding:.85rem 1.2rem; border-radius:8px; margin-bottom:1.5rem;
  font-size:.9rem; font-weight:500;
  animation: slideDown .35s ease-out;
}
.flash-success { background:rgba(46,204,113,.12); border:1px solid rgba(46,204,113,.3); color:var(--success); }
.flash-error   { background:rgba(231,76,60,.12);  border:1px solid rgba(231,76,60,.3);  color:var(--danger); }

@keyframes slideDown {
  from { opacity:0; transform:translateY(-10px); }
  to   { opacity:1; transform:translateY(0); }
}

/* ---- File Upload Area ---- */
.upload-area {
  border:2px dashed var(--border); border-radius:var(--radius);
  padding:2rem; text-align:center; cursor:pointer;
  transition: border-color var(--transition), background var(--transition);
}
.upload-area:hover { border-color:var(--accent); background:rgba(108,99,255,.04); }
.upload-area .icon { font-size:2rem; margin-bottom:.5rem; }
.upload-area p { color:var(--text-muted); font-size:.88rem; }
.upload-area input[type="file"] { display:none; }

.file-inputs { display:flex; gap:1rem; margin-top:1rem; flex-wrap:wrap; }
.file-input-wrapper {
  flex:1; min-width:200px;
  background:rgba(255,255,255,.03); border:1px solid var(--border);
  border-radius:8px; padding:.6rem 1rem;
  display:flex; align-items:center; gap:.5rem;
  font-size:.88rem; color:var(--text-muted);
}
.file-input-wrapper input[type="file"] { flex:1; color:var(--text-muted); font-size:.85rem; }
.file-input-wrapper input[type="file"]::file-selector-button {
  background:var(--accent); color:#fff; border:none; padding:.3rem .7rem;
  border-radius:5px; font-size:.8rem; cursor:pointer; margin-right:.5rem;
}

/* ---- Table ---- */
.table-wrap { overflow-x:auto; margin-top:1.5rem; }
table { width:100%; border-collapse:collapse; }
thead th {
  text-align:left; padding:.75rem 1rem; font-size:.78rem; font-weight:600;
  color:var(--text-muted); text-transform:uppercase; letter-spacing:.06em;
  border-bottom:1px solid var(--border);
}
tbody td {
  padding:.75rem 1rem; font-size:.9rem;
  border-bottom:1px solid var(--border);
}
tbody tr { transition: background var(--transition); }
tbody tr:hover { background:var(--bg-card-hover); }

.badge {
  display:inline-block; padding:.15rem .55rem; border-radius:4px;
  font-size:.75rem; font-weight:600; text-transform:uppercase;
}
.badge-pdf  { background:rgba(231,76,60,.15); color:#e74c3c; }
.badge-png  { background:rgba(46,204,113,.15); color:#2ecc71; }
.badge-jpg  { background:rgba(243,156,18,.15); color:#f39c12; }
.badge-jpeg { background:rgba(243,156,18,.15); color:#f39c12; }

.actions { display:flex; gap:.5rem; }

/* ---- Empty state ---- */
.empty-state {
  text-align:center; padding:3rem 1rem; color:var(--text-muted);
}
.empty-state .icon { font-size:3rem; margin-bottom:.8rem; opacity:.5; }

/* ---- Footer text ---- */
.form-footer { text-align:center; margin-top:1.4rem; font-size:.88rem; color:var(--text-muted); }

/* ---- Responsive ---- */
@media (max-width:600px) {
  .form-row { grid-template-columns:1fr; }
  .card-narrow { margin:1.5rem 1rem; padding:1.5rem; }
  .navbar { padding:.8rem 1rem; }
  .file-inputs { flex-direction:column; }
}