/* Base */
:root{
  --bg:#f5f5f7;
  --surface:#ffffff;
  --surface-2:#fbfbfd;
  --ink:#1d1d1f;
  --muted:#6e6e73;
  --line:#ececf1;
  --blue:#78A6E6;
  --pink:#CC9AA6;
  --danger:#d45d5d;
  --success:#4d9b6d;
  --warning:#d28731;
  --shadow:0 18px 48px rgba(0,0,0,.075);
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*{box-sizing:border-box}

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font);
  color:var(--ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(120,166,230,.18), transparent 28rem),
    radial-gradient(circle at 90% 4%, rgba(204,154,166,.14), transparent 25rem),
    var(--bg);
}

button,input,select,textarea{font:inherit}

input,select,textarea{
  width:100%;
  min-height:46px;
  border:1px solid #d7d7dc;
  border-radius:15px;
  background:var(--surface-2);
  color:var(--ink);
  padding:12px 13px;
  outline:none;
}

textarea{
  min-height:95px;
  resize:vertical;
}

label{
  display:grid;
  gap:6px;
  color:var(--muted);
  font-size:12px;
  font-weight:760;
}

.btn{
  border:1px solid #d7d7dc;
  background:var(--surface);
  color:var(--ink);
  border-radius:999px;
  padding:11px 15px;
  font-size:13px;
  font-weight:760;
  cursor:pointer;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
}

.btn.primary{
  border-color:transparent;
  background:var(--blue);
  color:white;
}

/* Login */
.login-page{
  display:grid;
  place-items:center;
  padding:22px;
}

.login-shell{
  width:min(460px,100%);
}

.login-card{
  border:1px solid var(--line);
  border-radius:32px;
  background:rgba(255,255,255,.92);
  box-shadow:var(--shadow);
  padding:28px;
}

.login-badge,
.eyebrow{
  display:inline-flex;
  border-radius:999px;
  padding:7px 11px;
  background:rgba(120,166,230,.16);
  color:var(--ink);
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-weight:850;
  margin-bottom:14px;
}

.login-card h1{
  margin:0;
  font-size:38px;
  letter-spacing:-.06em;
}

.login-card p{
  color:var(--muted);
  margin:9px 0 22px;
}

.form-stack{
  display:grid;
  gap:14px;
}

.form-error{
  color:var(--danger);
  font-size:13px;
  font-weight:700;
  min-height:18px;
}

/* App */
.app{
  display:grid;
  grid-template-columns:270px 1fr;
  min-height:100vh;
}

.sidebar{
  padding:24px 18px;
  border-right:1px solid var(--line);
  background:rgba(255,255,255,.75);
  backdrop-filter:blur(22px);
  display:flex;
  flex-direction:column;
  gap:22px;
}

.side-logo{
  width:54px;
  height:54px;
  border-radius:18px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg, rgba(120,166,230,.28), rgba(204,154,166,.22));
  font-weight:900;
}

.sidebar nav{
  display:grid;
  gap:8px;
}

.sidebar nav button{
  border:0;
  background:transparent;
  color:var(--muted);
  border-radius:16px;
  padding:13px 14px;
  text-align:left;
  font-weight:760;
  cursor:pointer;
}

.sidebar nav button.active{
  background:rgba(120,166,230,.16);
  color:var(--ink);
}

.sidebar nav button:disabled{
  opacity:.45;
  cursor:not-allowed;
}

.logout{
  margin-top:auto;
  color:var(--muted);
  text-decoration:none;
  font-weight:760;
}

.main{
  padding:34px;
}

.topbar{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  margin-bottom:24px;
}

.topbar h1{
  margin:0;
  font-size:42px;
  letter-spacing:-.065em;
}

.topbar p{
  margin:7px 0 0;
  color:var(--muted);
}

.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
  margin-bottom:18px;
}

.stat{
  border:1px solid var(--line);
  border-radius:24px;
  background:var(--surface);
  padding:17px;
  box-shadow:0 8px 24px rgba(0,0,0,.045);
}

.stat span{
  display:block;
  color:var(--muted);
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-weight:850;
}

.stat strong{
  display:block;
  margin-top:5px;
  font-size:28px;
  letter-spacing:-.045em;
}

.panel{
  border:1px solid var(--line);
  border-radius:30px;
  background:rgba(255,255,255,.92);
  box-shadow:var(--shadow);
  padding:22px;
}

.panel-head{
  display:flex;
  justify-content:space-between;
  gap:18px;
  align-items:flex-start;
  margin-bottom:18px;
}

.panel-head h2{
  margin:0;
  font-size:24px;
  letter-spacing:-.04em;
}

.panel-head p{
  margin:6px 0 0;
  color:var(--muted);
}

.panel-head input{
  max-width:320px;
}

.clients-list{
  display:grid;
  gap:12px;
}

.client-card{
  border:1px solid var(--line);
  border-radius:22px;
  background:var(--surface-2);
  padding:16px;
  display:grid;
  gap:12px;
}

.client-card h3{
  margin:0;
  font-size:18px;
  letter-spacing:-.03em;
}

.client-card p{
  margin:4px 0 0;
  color:var(--muted);
}

.client-meta,
.client-info,
.client-actions{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.client-meta span,
.client-info span{
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:999px;
  padding:7px 9px;
  color:var(--muted);
  font-size:11px;
  font-weight:760;
}

.client-actions button{
  border:1px solid #d7d7dc;
  background:var(--surface);
  color:var(--ink);
  border-radius:999px;
  padding:9px 12px;
  font-size:12px;
  font-weight:760;
  cursor:pointer;
}

.empty{
  border:1px dashed #d7d7dc;
  border-radius:22px;
  padding:28px;
  text-align:center;
  color:var(--muted);
}

.empty strong{
  display:block;
  color:var(--ink);
  margin-bottom:6px;
}

/* Modal */
.modal-backdrop{
  position:fixed;
  inset:0;
  z-index:1000;
  display:none;
  align-items:center;
  justify-content:center;
  padding:22px;
  background:rgba(0,0,0,.38);
}

.modal-backdrop.show{
  display:flex;
}

.modal{
  width:min(760px,100%);
  max-height:90vh;
  overflow:auto;
  border-radius:30px;
  background:var(--surface);
  padding:24px;
  box-shadow:0 28px 90px rgba(0,0,0,.26);
}

.modal h2{
  margin:0;
  font-size:28px;
  letter-spacing:-.05em;
}

.modal p{
  margin:7px 0 18px;
  color:var(--muted);
}

.client-form{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:13px;
}

.client-form .full{
  grid-column:1/-1;
}

.modal-actions{
  display:flex;
  justify-content:flex-end;
  gap:10px;
}

@media(max-width:900px){
  .app{
    grid-template-columns:1fr;
  }

  .sidebar{
    position:relative;
    flex-direction:row;
    align-items:center;
  }

  .sidebar nav{
    grid-template-columns:repeat(4,auto);
    display:grid;
    overflow:auto;
  }

  .logout{
    margin-left:auto;
    margin-top:0;
  }

  .stats{
    grid-template-columns:repeat(2,1fr);
  }

  .panel-head{
    display:grid;
  }

  .panel-head input{
    max-width:none;
  }

  .client-form{
    grid-template-columns:1fr;
  }

  .main{
    padding:20px;
  }
}

@media(max-width:620px){
  .topbar{
    display:grid;
  }

  .stats{
    grid-template-columns:1fr;
  }
}