:root{
  --bg: #0A0A0B;
  --surface: #131316;
  --surface-2: #1a1a1f;
  --line: #ffffff17;
  --line-strong: #ffffff2c;
  --text: #F1F0ED;
  --text-dim: #949289;
  --text-faint: #55534C;
  --accent: #4C6FFF;
  --danger: #ff6b6b;
  --success: #4ade80;
  --warning: #fbbf24;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{
  background:var(--bg);color:var(--text);
  font-family:'Inter',sans-serif;line-height:1.5;
  min-height:100vh;
}
a{color:inherit;text-decoration:none;}
h1,h2,h3{font-family:'Archivo',sans-serif;font-weight:800;text-transform:uppercase;}

/* ---- layout ---- */
.admin-shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh;}
@media (max-width:800px){ .admin-shell{grid-template-columns:1fr;} .admin-sidebar{display:none;} }

.admin-sidebar{
  background:var(--surface);border-right:1px solid var(--line);
  padding:24px 0;display:flex;flex-direction:column;
}
.admin-logo{
  font-family:'Archivo',sans-serif;font-weight:800;font-size:15px;text-transform:uppercase;
  padding:0 24px 24px;border-bottom:1px solid var(--line);margin-bottom:16px;
  display:flex;align-items:center;gap:9px;
}
.admin-logo .dot{width:7px;height:7px;background:var(--accent);border-radius:50%;}
.admin-nav{display:flex;flex-direction:column;gap:2px;flex:1;}
.admin-nav a{
  padding:12px 24px;font-size:14px;color:var(--text-dim);
  border-left:2px solid transparent;transition:all .15s;
}
.admin-nav a:hover{color:var(--text);background:var(--surface-2);}
.admin-nav a.active{color:var(--text);border-left-color:var(--accent);background:var(--surface-2);}
.admin-nav .badge{
  display:inline-block;background:var(--accent);color:#fff;font-size:11px;
  padding:1px 7px;border-radius:10px;margin-left:6px;font-family:'IBM Plex Mono',monospace;
}
.admin-user{padding:16px 24px 0;border-top:1px solid var(--line);margin-top:12px;}
.admin-user .name{font-size:13px;color:var(--text);}
.admin-user .logout{font-size:12px;color:var(--text-faint);margin-top:6px;display:inline-block;}
.admin-user .logout:hover{color:var(--danger);}

.admin-main{padding:32px 40px;max-width:1200px;}
.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;flex-wrap:wrap;gap:12px;}
.admin-header h1{font-size:26px;}
.admin-header p{color:var(--text-dim);font-size:14px;margin-top:4px;}

/* ---- cards / tables ---- */
.card{background:var(--surface);border:1px solid var(--line);padding:24px;margin-bottom:20px;}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:28px;}
.stat-card{background:var(--surface);border:1px solid var(--line);padding:20px;}
.stat-card .num{font-family:'Archivo',sans-serif;font-weight:800;font-size:32px;}
.stat-card .label{font-size:12px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;margin-top:4px;}

table{width:100%;border-collapse:collapse;font-size:14px;}
th{
  text-align:left;padding:10px 14px;font-size:11px;text-transform:uppercase;
  letter-spacing:.05em;color:var(--text-faint);border-bottom:1px solid var(--line-strong);
  font-family:'IBM Plex Mono',monospace;font-weight:500;
}
td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;}
tr:hover td{background:var(--surface-2);}

/* ---- forms ---- */
label{display:block;font-size:12px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;}
input[type=text],input[type=email],input[type=tel],input[type=date],input[type=password],
textarea,select{
  width:100%;background:var(--surface-2);border:1px solid var(--line-strong);color:var(--text);
  font-family:'Inter',sans-serif;font-size:14px;padding:11px 12px;margin-bottom:16px;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);}
textarea{resize:vertical;min-height:90px;}

.btn{
  display:inline-flex;align-items:center;gap:6px;font-family:'Inter',sans-serif;font-weight:600;
  font-size:13.5px;padding:11px 20px;border:none;cursor:pointer;text-decoration:none;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{filter:brightness(1.1);}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text);}
.btn-ghost:hover{border-color:var(--text-dim);}
.btn-danger{background:transparent;border:1px solid var(--danger);color:var(--danger);}
.btn-danger:hover{background:var(--danger);color:#fff;}
.btn-sm{padding:6px 12px;font-size:12px;}

/* ---- badges / status pills ---- */
.pill{
  display:inline-block;padding:3px 10px;font-size:11px;font-family:'IBM Plex Mono',monospace;
  text-transform:uppercase;letter-spacing:.04em;border:1px solid var(--line-strong);
}
.pill-nova{border-color:var(--accent);color:var(--accent);}
.pill-kontaktovano{border-color:var(--warning);color:var(--warning);}
.pill-potvrzeno{border-color:var(--success);color:var(--success);}
.pill-zamitnuto{border-color:var(--danger);color:var(--danger);}

/* ---- flash messages ---- */
.flash{padding:14px 18px;margin-bottom:20px;border:1px solid;font-size:14px;}
.flash-ok{border-color:var(--success);color:var(--success);background:#4ade8012;}
.flash-err{border-color:var(--danger);color:var(--danger);background:#ff6b6b12;}

/* ---- login page ---- */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;}
.login-box{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--line);padding:36px;}
.login-box h1{font-size:20px;margin-bottom:6px;}
.login-box p{color:var(--text-dim);font-size:13px;margin-bottom:24px;}

/* ---- calendar ---- */
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);}
.cal-grid-head{border-bottom:1px solid var(--line-strong);}
.cal-weekday{
  padding:10px;text-align:center;font-family:'IBM Plex Mono',monospace;
  font-size:11px;color:var(--text-faint);text-transform:uppercase;
}
.cal-cell{
  aspect-ratio:1/0.8;border:1px solid var(--line);padding:8px;
  display:flex;flex-direction:column;gap:4px;color:var(--text);
  transition:background .15s;position:relative;overflow:hidden;
}
.cal-cell:hover{background:var(--surface-2);}
.cal-cell-empty{border-color:transparent;pointer-events:none;}
.cal-daynum{font-family:'Archivo',sans-serif;font-weight:700;font-size:14px;}
.cal-cell-today .cal-daynum{color:var(--accent);}
.cal-cell-today{box-shadow:inset 0 0 0 1px var(--accent);}
.cal-note{font-size:10.5px;color:var(--text-faint);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.cal-cell-obsazeno{background:#4C6FFF14;}
.cal-cell-obsazeno .cal-daynum{color:var(--accent);}
.cal-cell-blokovano{background:#55534C22;}
.cal-cell-blokovano .cal-daynum{color:var(--text-faint);}

.cal-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:4px;vertical-align:middle;}
.cal-dot-volno{border:1px solid var(--line-strong);}
.cal-dot-obsazeno{background:var(--accent);}
.cal-dot-blokovano{background:var(--text-faint);}

@media (max-width:700px){
  .cal-note{display:none;}
  .cal-cell{aspect-ratio:1/1;padding:6px;}
}