:root{
  --bg-color: #F8FAFC;
  --card-bg: #FFFFFF;
  --primary: #0F172A;
  --accent: #2563EB;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --radius: 64px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

*{ box-sizing: border-box; }

body{
  background-color: var(--bg-color);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  margin: 0;
  color: var(--primary);
  -webkit-font-smoothing: antialiased;
}

/* --- Navigation --- */
.navbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 40px;
  background:white;
  border-bottom:1px solid var(--border);
}
.logo{
  font-weight:800;
  font-size:20px;
  letter-spacing:-0.5px;
  color:var(--primary);
}
.nav-status{
  font-size:12px;
  font-weight:600;
  color:#10B981;
  background:#ECFDF5;
  padding:6px 12px;
  border-radius:20px;
}

/* --- Main Layout --- */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:40px 20px;
  min-height:calc(100vh - 160px);
}

.hero-section{
  text-align:center;
  margin-bottom:60px;
}
.hero-section h1{
  font-size:32px;
  font-weight:700;
  margin-bottom:10px;
  letter-spacing:-0.02em;
}
.hero-section p{
  color:var(--text-muted);
  font-size:16px;
}

/* --- GRID SYSTEM (Responsive) --- */
.cards-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:30px;
  width:100%;
}
@media (max-width:900px){
  .cards-grid{ grid-template-columns:repeat(2, 1fr); }
}
@media (max-width:600px){
  .cards-grid{ grid-template-columns:1fr; }
  .hero-section{ margin-bottom:40px; }
  .navbar{ padding:16px 16px; }
}

/* --- CARD DESIGN --- */
.card{
  position:relative;
  background:var(--card-bg);
  border-radius:var(--radius);
  height:380px;
  cursor:pointer;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s ease;
}
.card:hover:not(.open){
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

/* --- Shutters --- */
.card-shutter{
  position:absolute;
  left:0;
  width:100%;
  z-index:10;
  transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1);
}
.card-shutter.top{
  top:0;
  height:75%;
  background-size:cover;
  background-position:center;
}
.card-shutter.bottom{
  bottom:0;
  height:25%;
  background:white;
  border-top:1px solid var(--border);
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:0 24px;
}
.card.open .card-shutter.top{ transform: translateY(-100%); }
.card.open .card-shutter.bottom{ transform: translateY(100%); }

.property-info{
  display: flex;
  flex-direction: column;
  align-items: center;   /* centrează pe axa orizontală */
  justify-content: center;
  text-align: center;    /* centrează textul */
  width: 100%;
}

.prop-id{
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.prop-name{
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.action-icon{ font-size:20px; color:var(--accent); transition: transform 0.2s; }
.card:hover .action-icon{ transform: translateX(5px); }

/* --- BACK (PIN Area) --- */
.card-back{
  position:absolute; inset:0;
  z-index:1;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  background:#F8FAFC;
  padding:24px;
}

.secure-label{
  font-size:12px;
  font-weight:600;
  color:var(--text-muted);
  margin-bottom:24px;
  letter-spacing:1px;
}

.pin-group{ display:flex; gap:12px; margin-bottom:24px; }

.pin-input{
  width:50px; height:60px;
  border:1px solid var(--border);
  border-radius:12px;
  background:white;
  text-align:center;
  font-size:24px;
  font-weight:600;
  color:var(--primary);
  transition: all 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
.pin-input:focus{
  border-color: var(--accent);
  outline:none;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}
.pin-input.error{
  border-color:#EF4444;
  background:#FEF2F2;
  color:#EF4444;
}

.verify-btn{
  background: var(--primary);
  color:white;
  border:none;
  padding:12px 24px;
  border-radius:8px;
  font-weight:600;
  font-size:14px;
  cursor:pointer;
  transition: background 0.2s, transform 0.12s;
}
.verify-btn:hover{ background: var(--accent); }
.verify-btn:active{ transform: translateY(1px); }

.verify-hint{
  margin-top:12px;
  font-size:12px;
  color: var(--text-muted);
  text-align:center;
  min-height: 16px;
}

/* Footer */
footer{
  text-align:center;
  padding:40px;
  color:var(--text-muted);
  font-size:13px;
  border-top:1px solid var(--border);
}

/* Shake */
.shake{ animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both; }
@keyframes shake{
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Small admin UI helpers */
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  border:1px solid var(--border);
  background:#fff;
  color:var(--primary);
}