/* ========================================================================
   SVJ990 - Hlavní stylesheet
   Profesionální, decentní design pro správcovskou aplikaci
   ======================================================================== */

:root {
  /* Barvy */
  --color-primary: #1e3a5f;
  --color-primary-dark: #15293f;
  --color-primary-light: #2c5282;
  --color-accent: #b8924b;
  --color-accent-light: #d4a04c;
  --color-table-header: #d4a04c;

  --color-bg: #f5f5f7;
  --color-bg-alt: #fafafa;
  --color-card: #ffffff;
  --color-text: #2c2c2c;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-border: #e0e0e0;
  --color-border-light: #f0f0f0;

  --color-success: #2d8659;
  --color-success-bg: #e6f4ec;
  --color-warning: #c98a2e;
  --color-warning-bg: #fdf6e3;
  --color-danger: #c0392b;
  --color-danger-bg: #fbeae7;
  --color-info: #2c5282;
  --color-info-bg: #e7eef7;

  /* Rozměry */
  --sidebar-width: 240px;
  --topbar-height: 60px;
  --content-padding: 24px;
  --card-radius: 8px;
  --input-radius: 6px;

  /* Stíny */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  /* Typografie */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, Consolas, "Courier New", monospace;
}

/* ========== RESET ========== */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, h4, p, ul, ol, table, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font: inherit; }
img { max-width: 100%; display: block; }

/* ========== ZÁKLAD ========== */
html, body {
  height: 100%;
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ========== LOGIN OBRAZOVKA ========== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
  padding: 20px;
}

.login-card {
  background: var(--color-card);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--color-border-light);
}

.login-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  font-weight: 600;
}

.login-logo-svg {
  display: block;
  margin: 0 auto 12px;
}

.login-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.login-form input[type="password"],
.login-form input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--input-radius);
  font-size: 15px;
  transition: all 0.15s ease;
}

.login-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,58,95,0.1);
}

.btn-login {
  width: 100%;
  padding: 12px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--input-radius);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.15s ease;
}

.btn-login:hover { background: var(--color-primary-dark); }
.btn-login:active { transform: translateY(1px); }

.login-error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  padding: 10px 14px;
  border-radius: var(--input-radius);
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
}

.login-error.show { display: block; }

.login-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ========== HLAVNÍ LAYOUT (PO PŘIHLÁŠENÍ) ========== */
.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-primary);
  color: white;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
}

.sidebar-subtitle {
  font-size: 11px;
  color: rgba(255,255,255,0.6);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
}

.nav-section-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: rgba(255,255,255,0.5);
  padding: 12px 20px 6px;
  font-weight: 600;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: rgba(255,255,255,0.06);
  color: white;
}

.nav-item.active {
  background: rgba(255,255,255,0.08);
  color: white;
  border-left-color: var(--color-accent);
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.85;
}

.sidebar-footer {
  padding: 12px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 11px;
  color: rgba(255,255,255,0.5);
}

/* HLAVNÍ OBSAH */
.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: var(--topbar-height);
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--content-padding);
  flex-shrink: 0;
}

.topbar-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.btn-logout {
  padding: 6px 14px;
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--input-radius);
  font-size: 13px;
  transition: all 0.15s ease;
}

.btn-logout:hover {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border-color: var(--color-danger);
}

.content {
  flex: 1;
  overflow-y: auto;
  padding: var(--content-padding);
}

/* ========== KARTY A SEKCE ========== */
.card {
  background: var(--color-card);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  margin-bottom: 16px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

.card-body { padding: 20px; }

.page-header {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
}

.page-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ========== TLAČÍTKA ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--input-radius);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-secondary {
  background: var(--color-card);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-bg);
  border-color: var(--color-text-secondary);
}

.btn-accent {
  background: var(--color-accent);
  color: white;
}
.btn-accent:hover { background: #a07f3e; }

.btn-danger {
  background: var(--color-card);
  color: var(--color-danger);
  border-color: var(--color-danger);
}
.btn-danger:hover {
  background: var(--color-danger);
  color: white;
}

.btn-success {
  background: #27ae60;
  color: white;
  border-color: #27ae60;
}
.btn-success:hover { background: #229954; border-color: #229954; }

.btn-warning {
  background: #e67e22;
  color: white;
  border-color: #e67e22;
}
.btn-warning:hover { background: #ca6f1e; border-color: #ca6f1e; }

.btn-info {
  background: #3498db;
  color: white;
  border-color: #3498db;
}
.btn-info:hover { background: #2874a6; border-color: #2874a6; }

.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ========== FORMULÁŘE ========== */
.form-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.form-row:last-child { border-bottom: none; }

.form-row label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-input,
input[type="text"]:not(.login-form input),
input[type="email"]:not(.login-form input),
input[type="number"]:not(.login-form input),
input[type="date"]:not(.login-form input),
select:not(.login-form select),
textarea:not(.login-form textarea) {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--input-radius);
  font-size: 13px;
  background: var(--color-card);
}

.form-input:focus,
input:focus:not(.login-form input),
select:focus:not(.login-form select),
textarea:focus:not(.login-form textarea) {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,58,95,0.1);
}

.form-help {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ========== TABULKY ========== */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-card);
}

.table thead th {
  background: var(--color-table-header);
  color: white;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  padding: 10px 12px;
  text-align: left;
  border-bottom: 2px solid #b8814a;
}

.table tbody td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 13px;
}

.table tbody tr:nth-child(even) { background: var(--color-bg-alt); }
.table tbody tr:hover { background: #fff8e8; }

.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .center { text-align: center; }

/* ========== STAVOVÉ ZNAČKY ========== */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 500;
}

.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }
.badge-gray { background: var(--color-bg); color: var(--color-text-secondary); }

/* ========== DASHBOARD MŘÍŽKA ========== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-card);
  border-radius: var(--card-radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.stat-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 26px;
  font-weight: 600;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.stat-meta {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ========== ALERTY ========== */
.alert {
  padding: 12px 16px;
  border-radius: var(--input-radius);
  font-size: 13px;
  margin-bottom: 16px;
  border-left: 3px solid;
}

.alert-info { background: var(--color-info-bg); color: var(--color-info); border-color: var(--color-info); }
.alert-success { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }
.alert-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: var(--color-warning); }
.alert-danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger); }

/* ========== EMPTY STATE ========== */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}

.empty-state-title {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.empty-state-text {
  font-size: 13px;
}

/* ========== UTILITY ========== */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-bold { font-weight: 600; }
.text-mono { font-family: var(--font-mono); }
.text-sm { font-size: 12px; }
.text-lg { font-size: 16px; }
.text-xl { font-size: 20px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-end { display: flex; justify-content: flex-end; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ========== LOADING / SPINNER ========== */
.loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ========== MODAL ========== */
.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 9000;
  padding: 40px 20px;
  overflow-y: auto;
}
.modal {
  background: var(--color-card);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  position: relative; /* pro draggable */
}
.modal.dragging {
  transition: none;
  cursor: grabbing !important;
}
.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: grab; /* draggable - chytni za hlavičku */
  user-select: none;
}
.modal-header:active {
  cursor: grabbing;
}
.modal-header .modal-close {
  cursor: pointer; /* křížek zachovat pointer */
}
.modal-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
}
.modal-close {
  font-size: 24px;
  color: var(--color-text-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close:hover { background: var(--color-bg); color: var(--color-text); }
.modal-body { padding: 24px; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  background: var(--color-bg-alt);
  border-radius: 0 0 var(--card-radius) var(--card-radius);
}

.field-group { margin-bottom: 16px; }
.field-group label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.field-group input[type="text"],
.field-group input[type="email"],
.field-group input[type="tel"],
.field-group input[type="number"],
.field-group input[type="date"],
.field-group select,
.field-group textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--input-radius);
  font-size: 13px;
}

/* Skrýt šipky u number inputů */
.field-group input[type="number"]::-webkit-inner-spin-button,
.field-group input[type="number"]::-webkit-outer-spin-button,
input[type="number"].no-spin::-webkit-inner-spin-button,
input[type="number"].no-spin::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.field-group input[type="number"],
input[type="number"].no-spin {
  -moz-appearance: textfield;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

.contact-card {
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 16px;
  margin-bottom: 12px;
  background: var(--color-bg-alt);
}
.contact-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}

/* ========== STORAGE STATUS ========== */
.storage-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 4px;
  background: var(--color-bg);
}

.storage-status.connected {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.storage-status.disconnected {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.storage-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}