/* KSeF WebApp — minimalist light/dark theme (no gradients, no shadows, radius <= 5px) */
:root{
  --radius: 5px;

  /* Light (default) */
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --accent: #2563eb;
  --danger: #dc2626;

  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --input-focus: #2563eb;

  --toast-bg: #ffffff;
  --code-bg: #f1f5f9;
  --code-text: #0f172a;
}

html[data-theme="dark"]{
  --bg: #0b0f14;
  --panel: #0b0f14;
  --text: #e6edf3;
  --muted: #9aa4b2;
  --border: #233044;
  --accent: #7dd3fc;
  --danger: #fb7185;

  --input-bg: #0b1016;
  --input-border: #2b3a52;
  --input-focus: #7dd3fc;

  --toast-bg: #0b1016;
  --code-bg: #0b1016;
  --code-text: #e6edf3;
}

@media (prefers-color-scheme: dark){
  html:not([data-theme]){
    /* jeśli ktoś nie ma zapisanego wyboru, a system jest dark */
    --bg: #0b0f14;
    --panel: #0b0f14;
    --text: #e6edf3;
    --muted: #9aa4b2;
    --border: #233044;
    --accent: #7dd3fc;
    --danger: #fb7185;
    --input-bg: #0b1016;
    --input-border: #2b3a52;
    --input-focus: #7dd3fc;
    --toast-bg: #0b1016;
    --code-bg: #0b1016;
    --code-text: #e6edf3;
  }
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

a{ color: var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{ max-width: 1100px; margin: 0 auto; padding: 22px; }

.nav{
  display:flex; gap:12px; align-items:center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
  flex-wrap:wrap;
}
.nav .brand{ font-weight: 700; letter-spacing: .2px; margin-right: 8px; }
.nav .spacer{ flex: 1 1 auto; }

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.grid{ display:grid; gap: 14px; }
.grid-2{ grid-template-columns: 1fr 1fr; }
@media (max-width: 860px){ .grid-2{ grid-template-columns: 1fr; } }

h1, h2{ margin: 0 0 12px; font-weight: 700; }
h1{ font-size: 20px; }
h2{ font-size: 16px; }

label{ display:block; margin: 10px 0 6px; color: var(--muted); font-size: 13px; }

input, select, textarea{
  width:100%;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text);
  outline: none;
}
input:focus, select:focus, textarea:focus{
  border-color: var(--input-focus);
}

textarea{ resize: vertical; min-height: 80px; }

.row{ display:grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
@media (max-width: 860px){ .row{ grid-template-columns: 1fr; } }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 9px 12px;
  cursor:pointer;
  font-size: 14px;
  line-height: 1;
}
.btn:hover{ border-color: var(--input-border); }
.btn.primary{
  border-color: var(--accent);
  color: var(--accent);
}
.btn.danger{
  border-color: var(--danger);
  color: var(--danger);
}

.small{ font-size: 13px; color: var(--muted); }
.hr{ height:1px; background: var(--border); margin: 14px 0; }

.table{
  width:100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.table th, .table td{
  padding: 10px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.table th{
  color: var(--muted);
  font-weight: 600;
  text-align: left;
  background: var(--panel);
}
.table tr:last-child td{ border-bottom: none; }

.badge{
  display:inline-block;
  padding: 3px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}
.badge.ok{ border-color: var(--accent); color: var(--accent); }
.badge.err{ border-color: var(--danger); color: var(--danger); }

.toast{
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--toast-bg);
  margin-bottom: 12px;
}
.toast.ok{ border-color: var(--accent); }
.toast.err{ border-color: var(--danger); }

.code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 2px 6px;
  border-radius: var(--radius);
  word-break: break-all;
}

/* --- Mega menu navbar (inspired by provided template) --- */
.navbar{
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.navbar *{ box-sizing: border-box; }

.navbar-inner{
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.nav-logo{
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 14px 0;
}

.nav-actions{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 10px 0;
}

.nav-user{
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* hamburger */
.nav-toggle{
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  border-radius: 5px;
}

.nav-toggle span{
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav-toggle.is-open span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity: 0; }
.nav-toggle.is-open span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }

/* menu main — mobile first */
.nav-menu{
  list-style: none;
  display: none;
  flex-direction: column;
  width: 100%;
  border-top: 1px solid var(--border);
  background: var(--panel);
  margin: 0 0 10px 0;
  padding: 0;
}

.nav-menu > li{ border-bottom: 1px solid var(--border); }
.nav-menu > li > a{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 14px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
}

.nav-menu > li > a .label{
  display:inline-flex;
  align-items:center;
  gap: 10px;
}

.nav-menu > li > a i{ font-size: 18px; }

/* caret */
.has-sub > a::after{
  content: "\f107";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 12px;
  margin-left: 8px;
  color: var(--muted);
}

/* submenu — mobile accordion */
.navbar .submenu{
  display: none;
  background: var(--bg);
}

.navbar ul{ list-style: none; padding: 0; margin: 0; }

.submenu-inner{
  padding: 10px 16px 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.submenu-column h3{
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 10px 0 6px;
}

.submenu-column li a{
  display:flex;
  align-items:flex-start;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 5px;
  font-size: 14px;
  color: var(--text);
  text-decoration:none;
  transition: background 0.14s ease, color 0.14s ease;
}

.submenu-column li a i{
  font-size: 18px;
  margin-top: 2px;
  color: var(--accent);
  width: 18px;
  text-align:center;
}

.submenu-column li a div{ display:flex; flex-direction:column; }
.submenu-column li a span.desc{ font-size: 11px; color: var(--muted); margin-top: 2px; }

.submenu-column li a:hover{
  background: rgba(37, 99, 235, 0.10);
  color: var(--accent);
}

/* desktop */
@media (min-width: 769px){
  .navbar-inner{
    padding: 0 24px;
    flex-wrap: nowrap;
    min-height: 64px;
  }

  .nav-toggle{ display: none; }

  .nav-menu{
    display: flex !important;
    flex-direction: row;
    align-items: stretch;
    width: auto;
    border-top: none;
    margin: 0;
  }

  .nav-menu > li{
    border-bottom: none;
    position: static;
  }

  .nav-menu > li > a{
    padding: 18px 18px;
    font-size: 16px;
    transition: background 0.18s ease, color 0.18s ease;
  }

  .nav-menu > li > a:hover{
    background: rgba(37, 99, 235, 0.10);
    color: var(--accent);
  }

  /* mega menu full width (no shadows per spec) */
  .navbar .submenu{
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--panel);
    border-top: 1px solid var(--border);
    padding: 20px 0 24px;
  }

  .submenu-inner{
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .submenu-column li a{
    font-size: 15px;
    padding: 10px 10px;
    border-radius: 5px;
  }
}

/* Dark tweaks for hover */
html[data-theme="dark"] .submenu-column li a:hover,
html[data-theme="dark"] .nav-menu > li > a:hover{
  background: rgba(56, 189, 248, 0.12);
}