:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#101828;
  --muted:#667085;
  --brand:#0f766e;
  --brand2:#14b8a6;
  --border:#e5e7eb;
  --shadow:0 20px 60px rgba(16,24,40,.08);
  --radius:22px;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
}
a{text-decoration:none;color:inherit}
.site-header,.admin-header{
  height:76px;
  padding:0 6%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  background:rgba(255,255,255,.88);
  border-bottom:1px solid var(--border);
  position:sticky;
  top:0;
  z-index:10;
  backdrop-filter:blur(14px);
}
.brand{
  font-size:25px;
  font-weight:900;
  letter-spacing:-.7px;
}
.brand span{color:var(--brand)}
nav{display:flex;gap:18px}
nav a{font-weight:800;color:var(--muted)}
.hero{
  padding:86px 6%;
  background:
    radial-gradient(circle at top right, rgba(20,184,166,.22), transparent 35%),
    linear-gradient(135deg,#ecfeff,#fff);
}
.hero h1{
  max-width:820px;
  font-size:54px;
  line-height:1.02;
  margin:8px 0 18px;
  letter-spacing:-2px;
}
.hero p{
  max-width:680px;
  color:var(--muted);
  font-size:18px;
}
.eyebrow{
  text-transform:uppercase;
  font-size:13px!important;
  font-weight:900;
  color:var(--brand)!important;
  letter-spacing:.12em;
}
.container,.admin-container{
  width:min(1180px,92%);
  margin:38px auto;
}
h2{font-size:30px;letter-spacing:-1px}
.grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.card,.coupon,.panel,.auth-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.card{overflow:hidden}
.card img,.placeholder{
  width:100%;
  height:210px;
  object-fit:cover;
  background:#dff8f5;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  font-weight:900;
}
.card-body{padding:18px}
.store{
  color:var(--brand);
  font-size:12px;
  font-weight:900;
  text-transform:uppercase;
}
.card h3,.coupon h3{margin:8px 0;font-size:19px}
.card p,.coupon p{color:var(--muted)}
.price-row{
  display:flex;
  gap:10px;
  align-items:center;
  margin:12px 0;
}
.price-row strong{font-size:22px}
.price-row del{color:#98a2b3}
.badge{
  display:inline-flex;
  padding:7px 10px;
  background:#ecfdf3;
  color:#027a48;
  border-radius:999px;
  font-weight:900;
  font-size:13px;
  margin-bottom:12px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;
  border:0;
  border-radius:14px;
  padding:13px 18px;
  font-weight:900;
  cursor:pointer;
}
.full{width:100%}
.coupon-list{display:grid;gap:14px}
.coupon{
  padding:18px;
  display:flex;
  justify-content:space-between;
  gap:18px;
  align-items:center;
}
.coupon-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
code{
  background:#f2f4f7;
  padding:12px 14px;
  border-radius:12px;
  font-weight:900;
}
footer{
  padding:36px;
  text-align:center;
  color:var(--muted);
}
.auth{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.auth-card{
  width:min(420px,100%);
  padding:28px;
}
input,select,textarea{
  width:100%;
  border:1px solid var(--border);
  border-radius:14px;
  padding:13px 14px;
  margin-bottom:12px;
  font:inherit;
  background:#fff;
}
textarea{min-height:92px}
.admin-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  align-items:start;
}
.panel{
  padding:22px;
  margin-bottom:22px;
}
.check{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
  color:var(--muted);
}
.check input{
  width:auto;
  margin:0;
}
.table-wrap{overflow:auto}
table{
  width:100%;
  border-collapse:collapse;
}
th,td{
  padding:13px;
  border-bottom:1px solid var(--border);
  text-align:left;
}
th{color:var(--muted);font-size:13px;text-transform:uppercase}

@media(max-width:900px){
  .grid,.admin-grid{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .coupon{flex-direction:column;align-items:flex-start}
  .coupon-actions{width:100%;flex-direction:column;align-items:stretch}
}