@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --amber-glow: rgba(245, 158, 11, 0.2);
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-hover: rgba(255, 255, 255, 0.1);
  --surface: var(--slate-900);
  --radius: 16px;
  --radius-sm: 10px;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
  color: var(--slate-200);
  min-height: 100vh;
  padding: 24px 28px;
}

h1, h2, h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: #fff;
}
h1 { font-size: 22px; margin-bottom: 20px; }
h2 { font-size: 16px; margin-bottom: 12px; color: var(--slate-100); }
h3 { font-size: 14px; margin-bottom: 8px; }

p { font-size: 13px; color: var(--slate-400); line-height: 1.6; margin-bottom: 8px; }

a {
  color: var(--amber);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s;
}
a:hover { color: var(--amber-dark); text-decoration: underline; }

.card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--slate-400);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="file"],
select {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 12px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.6);
  color: var(--slate-100);
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
input:focus, select:focus {
  border-color: var(--amber);
}
input::placeholder { color: var(--slate-500); }

button, .btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  background: var(--amber);
  color: #1a1a1a;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: opacity 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
button:hover, .btn:hover { opacity: 0.85; text-decoration: none; }

.btn-danger {
  background: #ef4444;
  color: #fff;
}
.btn-danger:hover { opacity: 0.85; }

.btn-secondary {
  background: rgba(15, 23, 42, 0.6);
  color: var(--slate-300);
  border: 1px solid var(--glass-border);
}
.btn-secondary:hover { background: var(--glass-hover); }

.btn-small {
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 11px;
}

.message {
  color: #4ade80;
  font-size: 13px;
  margin-bottom: 12px;
  padding: 10px 14px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: 8px;
}
.error {
  color: #f87171;
  font-size: 13px;
  margin-bottom: 12px;
  padding: 10px 14px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}
th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  font-size: 13px;
}
th {
  color: var(--slate-400);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
td { color: var(--slate-200); }
tr:hover td { background: var(--glass-hover); }

ul { list-style: none; padding: 0; }

li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  margin-bottom: 8px;
}
li span { font-size: 13px; color: var(--slate-100); }

.nav-links {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  justify-content: flex-end;
}

.login-container {
  max-width: 380px;
  margin: 80px auto;
}

.document-list li a {
  font-weight: 600;
  font-size: 14px;
}

.pdf-viewer {
  margin-bottom: 20px;
}
.pdf-viewer object {
  width: 100%;
  height: 500px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
}
.pdf-viewer p.fallback {
  color: var(--slate-400);
  font-style: italic;
  padding: 12px;
}

.signature-pad {
  margin-top: 10px;
  margin-bottom: 10px;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  background: var(--slate-800);
}
.signature-pad canvas {
  display: block;
  width: 100%;
  height: 150px;
  border-radius: 8px;
}

.signature-image {
  max-width: 150px;
  max-height: 75px;
  border-radius: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  body { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .login-container { margin: 40px auto; }
  .pdf-viewer object { height: 300px; }
  li { flex-direction: column; align-items: flex-start; gap: 8px; }
}