/* CSS Variables for theming */
:root {
  --bg-overlay: rgba(255, 255, 255, 0.1);
  --text-color: #fff;
  --border-color: rgba(255, 255, 255, 0.2);
  --button-bg: #e60000;
  --button-hover: #c20000;
  --input-bg: #fff;
  --input-text: #000;
}

[data-theme="light"] {
  --bg-overlay: rgba(255, 255, 255, 0.9);
  --text-color: #333;
  --border-color: rgba(0, 0, 0, 0.2);
  --button-bg: #e60000;
  --button-hover: #c20000;
  --input-bg: #fff;
  --input-text: #000;
}

/* Algemene body met achtergrondafbeelding */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: url('red-5828562_1920.jpg') no-repeat center center fixed;
  background-size: cover;
  transition: all 0.3s ease;
}

/* Centrerende container */
.background {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Login venster */
.login-box {
  position: relative;
  background-color: var(--bg-overlay);
  backdrop-filter: blur(6px);
  padding: 40px;
  border-radius: 10px;
  border: 3px solid var(--border-color);
  text-align: center;
  max-width: 400px;
  width: 90%;
  z-index: 1;
  transition: all 0.3s ease;
}

/* Logo als achtergrond in de login-box */
.login-box::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 450px;
  height: 450px;
  background-image: url('3baf585b-78b7-44b1-89ae-0937fb8f8123.png');
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.15;
  z-index: 0;
}

/* Titel */
.login-box h2 {
  margin-bottom: 30px;
  color: var(--text-color);
  font-style: italic;
  z-index: 2;
  position: relative;
}

/* Inputvelden */
.login-box input {
  width: 100%;
  padding: 12px 10px;
  margin: 10px 0;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  position: relative;
  z-index: 2;
  background-color: var(--input-bg);
  color: var(--input-text);
  box-sizing: border-box;
}

/* Knoppen */
.login-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  position: relative;
  z-index: 2;
}

.login-buttons button {
  width: 48%;
  padding: 10px;
  border: none;
  background-color: var(--button-bg);
  color: white;
  font-size: 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.login-buttons button:hover {
  background-color: var(--button-hover);
}

/* Dark mode toggle */
.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-overlay);
  border: 2px solid var(--border-color);
  border-radius: 50px;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--text-color);
  font-size: 14px;
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
  z-index: 10;
}

.theme-toggle:hover {
  transform: scale(1.05);
}

/* Error message styling */
.error {
  color: #ff4444;
  background-color: rgba(255, 68, 68, 0.1);
  padding: 10px;
  border-radius: 4px;
  margin: 10px 0;
  border: 1px solid rgba(255, 68, 68, 0.3);
}
/* --- Algemene Stijlen & Thema --- */
:root {
  --bg-color: #f0f2f5;
  --panel-bg: #ffffff;
  --text-color: #1c1e21;
  --sidebar-bg: #e4e6eb;
  --border-color: #dcdfe3;
  --accent-color: #1877f2;
  --hover-bg: #d8dadf;
}

[data-theme="dark"] {
  --bg-color: #18191a;
  --panel-bg: #242526;
  --text-color: #e4e6eb;
  --sidebar-bg: #3a3b3c;
  --border-color: #444;
  --accent-color: #2d88ff;
  --hover-bg: #4e4f50;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
  overflow: hidden; /* Voorkomt scrollen op de body zelf */
}

/* --- Hoofdlayout met Flexbox --- */
.app-container {
  display: flex;
  height: 100vh; /* Volledige schermhoogte */
}

.sidebar, .main-panel, .promo-panel {
  padding: 20px;
  background-color: var(--panel-bg);
  transition: background-color 0.3s;
  overflow-y: auto; /* Toestaan dat panelen zelf scrollen */
}

/* --- Linker Sidebar --- */
.sidebar {
  flex: 0 0 250px; /* Niet groeien, niet krimpen, basisbreedte 250px */
  border-right: 1px solid var(--border-color);
}
.logo {
  
  display: flex;
  align-items: center;
  margin-bottom: 30px;
}
.logo img {
  width: 40px;
  height: 40px;
  margin-right: 10px;
}
.logo span {
  font-weight: bold;
}
.sidebar nav ul {
  list-style-type: none;
  padding: 0;
}
.sidebar nav ul li {
  padding: 10px;
  border-radius: 8px;
  cursor: pointer;
}
.sidebar nav ul li:hover {
    background-color: var(--hover-bg);
}
.sidebar nav ul ul { /* Geneste lijsten */
    padding-left: 20px;
    font-size: 0.9em;
}


/* --- Middenpaneel (Dynamisch) --- */
.main-panel {
  flex: 1; /* Neemt alle resterende ruimte in beslag */
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* --- Containers voor Dynamische Content --- */
.content-box {
  background-color: var(--sidebar-bg);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  padding: 20px;
  min-height: 200px;
}
.content-box h2 {
  margin-top: 0;
}
#file-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
}
.file-item {
    text-align: center;
    padding: 10px;
    background: var(--panel-bg);
    border-radius: 8px;
}
.file-item img { width: 50px; }


/* --- Rechter Promo Panel --- */
.promo-panel {
  flex: 0 0 280px; /* Vaste breedte */
  border-left: 1px solid var(--border-color);
  text-align: center;
}
.promo-panel .promo-logo { width: 60px; }


/* --- Thema Knop --- */
.theme-toggle {
  position: fixed;
  top: 15px;
  right: 15px;
  background-color: var(--panel-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: 20px;
  cursor: pointer;
  z-index: 1000;
}

/* --- Media Query voor Responsive Design (mobiel) --- */
@media (max-width: 1024px) {
  .promo-panel {
    display: none; /* Verberg rechter paneel op kleinere schermen */
  }
}
@media (max-width: 768px) {
  .app-container {
    flex-direction: column; /* Stapel panelen verticaal */
    height: auto;
  }
  .sidebar {
    flex-basis: auto; /* Reset de breedte */
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
}