:root{
  --bg:#eef7fb;
  --card:#ffffffd9;
  --card-strong:#ffffff;
  --text:#163443;
  --muted:#5f7c8c;
  --primary:#2a89b8;
  --primary-dark:#19688e;
  --accent:#8fd8f4;
  --danger:#c75454;
  --success:#2f8f63;
  --shadow:0 18px 45px rgba(18,61,83,.12);
  --radius:24px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:linear-gradient(180deg,#dff4fb 0%,#eff8fc 40%,#f8fbfd 100%)}
a{text-decoration:none;color:inherit}
body{min-height:100vh}
.page-shell{max-width:860px;margin:0 auto;padding:22px 16px 40px}
.water-bg::before,
.admin-bg::before{
  content:"";position:fixed;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 15% 10%, rgba(255,255,255,.55), transparent 20%),
    radial-gradient(circle at 80% 14%, rgba(143,216,244,.4), transparent 18%),
    radial-gradient(circle at 20% 80%, rgba(42,137,184,.10), transparent 25%);
}
.hero-card{
  position:relative;display:flex;justify-content:space-between;gap:14px;align-items:flex-start;
  background:var(--card);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.55);
  border-radius:30px;padding:22px;box-shadow:var(--shadow);margin-bottom:18px;
}
.eyebrow{margin:0 0 6px;font-size:.88rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--primary-dark)}
h1{margin:0;font-size:clamp(1.8rem,5vw,2.5rem);line-height:1.05}
.hero-text{margin:10px 0 0;color:var(--muted);line-height:1.5}
.admin-link,.ghost-btn,.primary-btn,.danger-btn{
  display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:999px;
  padding:12px 18px;font-weight:700;cursor:pointer;transition:.18s ease;min-height:46px
}
.admin-link,.primary-btn{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 10px 26px rgba(25,104,142,.22)}
.ghost-btn{background:#fff;color:var(--primary-dark);border:1px solid rgba(42,137,184,.18)}
.danger-btn{background:#fff0f0;color:var(--danger);border:1px solid rgba(199,84,84,.2)}
.primary-btn.big{width:100%}
.grid{display:grid;grid-template-columns:1fr;gap:14px}
.tool-card{
  display:grid;grid-template-columns:70px 1fr 28px;gap:14px;align-items:center;
  background:var(--card-strong);border-radius:24px;padding:16px 18px;box-shadow:var(--shadow);
  border:1px solid rgba(42,137,184,.08)
}
.tool-card:hover{transform:translateY(-1px)}
.tool-icon{
  width:58px;height:58px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  font-size:1.7rem;background:linear-gradient(135deg,#f7fdff,#dff4fb)
}
.tool-copy h2{margin:0 0 5px;font-size:1.1rem}
.tool-copy p{margin:0;color:var(--muted);font-size:.92rem;word-break:break-word}
.tool-arrow{font-size:2rem;color:var(--primary)}
.empty-state,.login-card,.admin-panel{background:var(--card);border-radius:28px;padding:20px;box-shadow:var(--shadow)}
.empty-state{text-align:center}
.empty-icon{font-size:2rem;margin-bottom:10px}
.flash{padding:14px 16px;border-radius:18px;margin-bottom:16px;font-weight:700}
.flash.success{background:#ebfff4;color:var(--success)}
.flash.error{background:#fff1f1;color:#b33b3b}
.login-form,.form-grid{display:grid;gap:14px}
label{display:grid;gap:6px;font-weight:700;font-size:.95rem}
input{
  width:100%;padding:12px 14px;border-radius:16px;border:1px solid rgba(22,52,67,.12);
  font:inherit;color:var(--text);background:#fff
}
input:focus{outline:none;border-color:rgba(42,137,184,.5);box-shadow:0 0 0 4px rgba(42,137,184,.12)}
.hint{margin:14px 0 0;color:var(--muted);font-size:.92rem}
code{background:#f0f7fb;padding:2px 6px;border-radius:8px}
.toolbar{display:flex;justify-content:flex-end;margin-bottom:16px}
.admin-list{display:grid;gap:16px}
.admin-item{background:#fff;border-radius:22px;padding:16px;border:1px solid rgba(42,137,184,.08)}
.form-grid{grid-template-columns:1fr 130px}
.form-grid .full-width{grid-column:1 / -1}
.item-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.switch-row{display:flex;align-items:center;gap:10px;font-weight:600}
.switch-row input{width:auto;transform:scale(1.15)}
.sticky-save{position:sticky;bottom:14px;margin-top:20px;padding-top:10px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}

@media (max-width:640px){
  .page-shell{padding:14px 12px 30px}
  .hero-card{padding:18px;flex-direction:column}
  .tool-card{grid-template-columns:58px 1fr 22px;padding:14px}
  .tool-icon{width:50px;height:50px;border-radius:16px;font-size:1.4rem}
  .form-grid{grid-template-columns:1fr}
  .toolbar{justify-content:stretch}.toolbar form,.toolbar button{width:100%}
  .item-actions{align-items:stretch}.item-actions form,.danger-btn{width:100%}
}