/* EyeLink IoT — Dark Theme (zlaté akcenty) */
:root {
  --primary: #e5a400;           /* zlatá — Tasmota style */
  --primary-dark: #b87d00;
  --surface: #121212;           /* hlavní pozadí */
  --card-bg: #1e1e1e;           /* karty */
  --card-hover: #2d2d2d;
  --text: #e0e0e0;
  --text-secondary: #a0a0a0;
  --border: #333;
  --success: #4caf50;
  --warning: #ff9800;
  --error: #f44336;
  --chart-line: var(--primary);
  --chart-fill: rgba(229, 164, 0, 0.2);
}

/* Povinné styly pro tmavý režim */
@media (prefers-color-scheme: dark) {
  :root {
    /* už nastaveno výše */
  }
}

/* Hlavní layout */
body {
  background-color: var(--surface);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

/* Hlavička */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  height: 32px;
  margin-right: 0.75rem;
  vertical-align: middle;
}

.app-header h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0;
  color: var(--text);
  display: inline;
}

.header-right {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.btn-icon:hover {
  background-color: var(--card-hover);
}

/* Sidebar (desktop) */
.sidebar {
  width: 240px;
  background-color: var(--card-bg);
  height: calc(100vh - 64px);
  position: sticky;
  top: 64px;
  padding: 1.5rem 0;
  border-right: 1px solid var(--border);
}

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

.nav-menu li {
  margin: 0;
}

.nav-menu a {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

/* Hlavní obsah */
.main-content {
  display: flex;
  min-height: calc(100vh - 64px);
}

.content-area {
  flex: 1;
  padding: 1.5rem;
}

/* Dashboard grid — Masonry (desktop) */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  padding: 0.5rem;
}

/* Karta zařízení */
.device-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid var(--border);
}

.device-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  background-color: var(--card-hover);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background-color: rgba(30, 30, 30, 0.7);
  border-bottom: 1px solid var(--border);
}

.card-header h3 {
  font-size: 1.25rem;
  margin: 0;
  color: var(--text);
  font-weight: 600;
}

.card-body {
  padding: 1.25rem;
}

.value {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.value.big {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 0.5rem 0;
}

.sensors {
  font-size: 0.85rem;
  color: var(--primary);
  margin-top: 0.5rem;
}

/* Graf placeholder */
.chart-placeholder {
  height: 60px;
  background: linear-gradient(90deg, transparent 50%, rgba(229, 164, 0, 0.1) 50%);
  background-size: 20px 20px;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  margin-top: 1rem;
}

@keyframes shimmer {
  0% { background-position: -20px 0; }
  100% { background-position: 20px 0; }
}

/* Loading karty */
.device-card.loading {
  opacity: 0.7;
}

.device-card.loading .value,
.device-card.loading h3,
.device-card.loading .sensors {
  background: linear-gradient(90deg, #333, #444, #333);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Tlačítka */
.btn {
  background-color: var(--primary);
  color: #000;
  border: none;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Modální okna */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--card-bg);
  width: 90%;
  max-width: 500px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  z-index: 1001;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  margin: 0;
  color: var(--text);
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-close:hover {
  color: var(--text);
}

.modal-body {
  padding: 1.5rem;
  max-height: 70vh;
  overflow-y: auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group button {
  width: 100%;
  padding: 0.6rem;
  background-color: #2d2d2d;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font-size: 1rem;
}

.hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

code {
  background-color: #2d2d2d;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: monospace;
}

/* Floating hlasové tlačítko (mobil) */
.voice-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #000;
  font-size: 1.8rem;
  border: none;
  box-shadow: 0 6px 16px rgba(229, 164, 0, 0.4);
  cursor: pointer;
  z-index: 999;
  display: none; /* defaultně skryto — zobrazí se jen na mobilu */
}

/* Hlasový log */
.voice-log {
  position: fixed;
  bottom: 90px;
  right: 24px;
  width: 320px;
  max-height: 400px;
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 998;
  display: none;
  flex-direction: column;
}

.log-header {
  padding: 0.75rem 1rem;
  background-color: rgba(30, 30, 30, 0.8);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.log-header h4 {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
}

.log-content {
  padding: 1rem;
  overflow-y: auto;
  flex: 1;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.log-content div {
  margin-bottom: 0.5rem;
  padding: 0.5rem;
  background-color: #252525;
  border-radius: 6px;
}

.log-content .user {
  color: var(--primary);
}

.log-content .ai {
  color: #4fc3f7;
}

/* Mobilní optimalizace */
@media (max-width: 768px) {
  .app-header {
    padding: 0.75rem 1rem;
  }

  .sidebar {
    display: none;
  }

  .main-content {
    flex-direction: column;
    height: auto;
  }

  .content-area {
    padding: 1rem;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .voice-fab {
    display: block;
  }

  .header-right {
    gap: 0.5rem;
  }

  .btn-icon {
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
  }
}

/* Animace pro PWA instalaci */
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(229, 164, 0, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(229, 164, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(229, 164, 0, 0); }
}

.install-prompt {
  animation: pulse 2s infinite;
}
/* Karta pro přidání zařízení */
.add-card {
  background: linear-gradient(135deg, #2d2d2d 0%, #1e1e1e 100%);
  border: 2px dashed var(--primary);
  grid-column: span 2;
}

.add-card .center {
  text-align: center;
}

.add-card .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.device-selector {
  width: 100%;
  padding: 0.6rem;
  background-color: #2d2d2d;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  margin-top: 1rem;
}