:root{
  /* muted, darker-side blue — not navy, not too bright */
  --blue:#35627f;
  --blue-dark:#294c63;
  --blue-deep:#20404f;
  --blue-soft:#e9f0f4;
  --ink:#20303a;
  --muted:#6c7c86;
  --line:#dbe3e8;
  --bg:#f2f5f7;
  --panel:#ffffff;
  --neg:#c0455b;
  --shadow:0 1px 3px rgba(20,40,55,.10),0 1px 2px rgba(20,40,55,.05);
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}
.small{font-size:13px}
.center{text-align:center}

/* hero */
.hero{background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 60%,var(--blue-deep) 100%);color:#fff;
  padding:54px 20px 46px;text-align:center;box-shadow:inset 0 -1px 0 rgba(0,0,0,.15)}
.hero-inner{max-width:900px;margin:0 auto}
.hero h1{margin:0;font-size:38px;letter-spacing:.5px;font-weight:800}
.hero .tagline{margin:10px 0 0;font-size:17px;color:#dce8ef}

.wrap{max-width:1000px;margin:0 auto;padding:30px 20px 50px}

/* directory cards */
.dir-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}
.dir-card{display:flex;flex-direction:column;gap:6px;background:var(--panel);border:1px solid var(--line);
  border-top:4px solid var(--blue);border-radius:12px;padding:20px;box-shadow:var(--shadow);
  color:var(--ink);transition:transform .08s,box-shadow .15s,border-color .15s}
.dir-card:hover{text-decoration:none;transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(20,40,55,.14);border-top-color:var(--blue-dark)}
.dir-name{font-size:20px;font-weight:700;color:var(--blue-dark)}
.dir-desc{font-size:14px;color:var(--muted);flex:1}
.dir-go{font-size:13px;font-weight:700;color:var(--blue);margin-top:6px}

.manage-link{margin-top:36px}

/* manage area */
.manage{margin-top:40px;background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:22px;box-shadow:var(--shadow)}
.manage-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.manage h2{margin:0;font-size:18px;color:var(--blue-dark)}
.manage h3{margin:22px 0 8px;font-size:15px;color:var(--blue-dark)}

.mrow{display:flex;align-items:center;gap:8px;padding:5px 0}
.mrow-head{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.4px;font-weight:700;padding-bottom:2px}
.mrow-head span:nth-child(1){width:60px}
.mrow-head span:nth-child(2){width:150px}
.mrow-head span:nth-child(3){width:200px}
.mrow-head span:nth-child(4){flex:1}
.mrow-head span:nth-child(5){width:36px}
.mrow-edit{display:flex;align-items:center;gap:8px;flex:1}
.mrow-edit input{padding:7px 9px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.mrow-edit input[name=name]{width:150px}
.mrow-edit input[name=url]{width:200px}
.mrow-edit input[name=description]{flex:1;min-width:120px}
.in-num{width:60px;text-align:center}

.btn-save,.btn-add{background:var(--blue);color:#fff;border:none;border-radius:8px;padding:8px 14px;font-weight:700;cursor:pointer}
.btn-save:hover,.btn-add:hover{background:var(--blue-dark)}
.mrow-del{margin:0}
.btn-del{background:none;border:none;color:var(--neg);font-size:15px;font-weight:700;cursor:pointer;opacity:.6;padding:6px}
.btn-del:hover{opacity:1}
.add-form{margin-top:4px}
code{background:var(--blue-soft);border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:12px}

.home-foot{text-align:center;padding:0 20px 30px}

/* login */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep))}
.login-card{background:var(--panel);border-radius:14px;padding:32px;width:330px;box-shadow:0 10px 30px rgba(0,0,0,.25);text-align:center}
.login-card h1{margin:0 0 4px;color:var(--blue-dark)}
.login-card input{width:100%;padding:11px;border:1px solid var(--line);border-radius:9px;margin:12px 0;font-size:15px}
.login-card button{width:100%;padding:11px;background:var(--blue);color:#fff;border:none;border-radius:9px;font-weight:700;cursor:pointer}
.login-card button:hover{background:var(--blue-dark)}
.alert{background:#fbe9ec;color:var(--neg);border:1px solid #f1c4cd;border-radius:8px;padding:8px;font-size:13px}

@media(max-width:640px){
  .mrow,.mrow-edit{flex-wrap:wrap}
  .mrow-edit input[name=name],.mrow-edit input[name=url]{width:100%}
}