:root {
	--background: rgba(255, 255, 255, 0.1);
	--navbar-width: 300px;
	--navbar-width-min: 60px;
	--navbar-dark-primary: rgba(30, 30, 30, 0.9);
	--navbar-dark-secondary: rgba(50, 50, 50, 0.7);
	--navbar-light-primary: #ffffff;
	--navbar-light-secondary: #b0b0b0;
	--glass-bg: rgba(255, 255, 255, 0.1);
	--glass-border: rgba(255, 255, 255, 0.2);
	--shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
	--backdrop-filter: blur(10px);
}

body {
	background: linear-gradient(135deg, #1e3c72, #2a5298);
}

#nav-bar {
	position: fixed;
	left: 1vw;
	top: 40px;
	max-height: calc(100vh - 80px);
	background: var(--glass-bg);
	backdrop-filter: var(--backdrop-filter);
	border: 1px solid var(--glass-border);
	border-radius: 16px;
	display: flex;
	flex-direction: column;
	color: var(--navbar-light-primary);
	font-family: 'Arial', sans-serif;
	overflow: hidden;
	user-select: none;
	z-index: 1000;
	transition: width 0.3s ease;
}

#nav-toggle:checked ~ #nav-header,
#nav-toggle:checked ~ #nav-content,
#nav-toggle:checked ~ #nav-footer {
	width: var(--navbar-width-min);
}

#nav-toggle:checked ~ #nav-header {
	width: var(--navbar-width-min);
}

#nav-toggle:checked ~ #nav-content {
	display: none;
}

#nav-toggle:checked ~ #nav-footer {
	display: none;
}

#nav-toggle:checked ~ #nav-header #nav-title {
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.2s;
}

#nav-toggle:checked ~ #nav-header label[for=nav-toggle] {
	left: calc(50% - 10px);
	transform: translateX(-50%);
}

#nav-toggle:checked ~ #nav-header #nav-toggle-burger {
	background: var(--navbar-light-primary);
}

#nav-toggle:checked ~ #nav-header #nav-toggle-burger:before,
#nav-toggle:checked ~ #nav-header #nav-toggle-burger:after {
	width: 16px;
	background: var(--navbar-light-primary);
	transform: translate(0, 0) rotate(0deg);
}

#nav-bar hr {
	margin: 0;
	position: relative;
	left: 16px;
	width: calc(100% - 32px);
	border: none;
	border-top: 1px solid var(--glass-border);
}

#nav-bar a {
	color: inherit;
	text-decoration: none;
	font-weight: 500;
}

#nav-bar input[type=checkbox],
#nav-bar input[type=radio] {
	display: none;
}

#nav-header {
	position: relative;
	width: calc(var(--navbar-width) - 16px);
	margin-left: 8px;
	min-height: 60px;
	background: transparent;
	border-radius: 12px;
	display: flex;
	align-items: center;
	transition: width 0.3s ease;
}

#nav-title {
	font-size: 1.5rem;
	font-weight: bold;
	padding-left: 16px;
	transition: opacity 0.3s;
}

label[for=nav-toggle] {
	position: absolute;
	right: 16px;
	width: 40px;
	height: 60px;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
}

#nav-toggle-burger {
	position: relative;
	width: 20px;
	height: 3px;
	background: var(--navbar-light-primary);
	border-radius: 3px;
	transition: background 0.3s;
}

#nav-toggle-burger:before,
#nav-toggle-burger:after {
	content: "";
	position: absolute;
	width: 20px;
	height: 3px;
	background: var(--navbar-light-primary);
	border-radius: 3px;
	transition: transform 0.3s;
}

#nav-toggle-burger:before {
	top: -6px;
}

#nav-toggle-burger:after {
	top: 6px;
}

#nav-content {
	position: relative;
	flex: 1;
	width: var(--navbar-width);
	padding: 8px 0;
	overflow-y: auto;
	transition: width 0.3s ease, display 0.3s ease;
}

#nav-content::-webkit-scrollbar {
	width: 6px;
}

#nav-content::-webkit-scrollbar-thumb {
	background: var(--glass-border);
	border-radius: 3px;
}

.menu {
	width: 100%;
}

.itemlinksiz {
	border-top: 1px solid var(--glass-border);
}

.btnmenu {
	display: flex;
	align-items: center;
	padding: 12px 16px;
	color: var(--navbar-light-primary);
	background: transparent;
	cursor: pointer;
	position: relative;
	transition: background 0.3s;
}

.btnmenu:hover {
	background: rgba(255, 255, 255, 0.2);
}

.btnmenu i {
	margin-right: 12px;
}

.smenu {
	background: var(--glass-bg);
	backdrop-filter: var(--backdrop-filter);
	overflow: hidden;
	max-height: 0;
	transition: max-height 0.3s ease-out;
}

.submenu-toggle {
  display: none;
}

.submenu-toggle:checked + label + .smenu {
  max-height: 500px;  /* ya da display:block */
  overflow: visible;
  transition: max-height 0.3s ease-in;
}

.smenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.smenu a {
	display: block;
	padding: 10px 30px;
	color: var(--navbar-light-secondary);
	font-size: 0.9rem;
	transition: color 0.3s, background 0.3s;
}

.smenu a:hover {
	color: var(--navbar-light-primary);
	background: rgba(255, 255, 255, 0.15);
}

.smenu a:before {
	content: "";
	position: absolute;
	width: 4px;
	height: 100%;
	background: var(--navbar-light-primary);
	left: 0;
	top: 0;
	opacity: 0;
	transition: opacity 0.3s;
}

.smenu a:hover:before {
	opacity: 1;
}

#nav-footer {
	width: var(--navbar-width);
	height: 60px;
	background: var(--glass-bg);
	backdrop-filter: var(--backdrop-filter);
	border-top: 1px solid var(--glass-border);
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0 16px;
	transition: width 0.3s ease, display 0.3s ease;
}

.footer-btn {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	color: var(--navbar-light-primary);
	text-decoration: none;
	font-size: 1.2rem;
	border-radius: 8px;
	background: rgba(255, 255, 255, 0.1);
	transition: background 0.3s;
}

.footer-btn:hover {
	background: rgba(255, 255, 255, 0.2);
}

@media (max-width: 1000px) {
	#nav-bar {
		top: 70px;
	}
}