/* ================= PREMIUM MOBILE SIDEBAR ================= */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800&display=swap');

.sidebar-overlay{
position:fixed;
top:0;
left:0;
width:100%;
height:100vh;
background:rgba(0,0,0,0.85);
backdrop-filter:blur(12px);
-webkit-backdrop-filter:blur(12px);
z-index:999;
opacity:0;
visibility:hidden;
transition:all 0.4s cubic-bezier(0.4,0,0.2,1);
}

.sidebar-overlay.active{
opacity:1;
visibility:visible;
}

.hamburger{
display:none;
flex-direction:column;
gap:6px;
cursor:pointer;
padding:8px;
z-index:1002;
position:relative;
}

.hamburger span{
width:26px;
height:3px;
background:linear-gradient(135deg,#0b3d91,#0099ff);
border-radius:3px;
transition:all 0.3s cubic-bezier(0.68,-0.55,0.265,1.55);
box-shadow:0 2px 5px rgba(0,0,0,0.15);
}

.hamburger.active span:nth-child(1){
transform:rotate(45deg) translate(9px,9px);
background:#ff5722;
}

.hamburger.active span:nth-child(2){
opacity:0;
transform:translateX(-20px);
}

.hamburger.active span:nth-child(3){
transform:rotate(-45deg) translate(9px,-9px);
background:#ff5722;
}

@media(max-width:768px){
.hamburger{
display:flex;
}

nav{
position:fixed;
top:0;
left:0;
width:280px;
height:100vh;
background:linear-gradient(180deg,#f0f8ff 0%,#ffffff 50%,#f8f9fa 100%);
box-shadow:8px 0 50px rgba(0,0,0,0.5);
padding:0;
transition:all 0.45s cubic-bezier(0.4,0,0.2,1);
z-index:1001;
overflow-y:auto;
transform:translateX(-100%);
opacity:0;
display:flex;
flex-direction:column;
font-family:'Poppins',sans-serif;
border-radius:0 16px 16px 0;
}

nav.active{
transform:translateX(0);
opacity:1;
}

.has-dropdown .dropdown{
display:none;
}

.has-dropdown.active .dropdown{
display:block;
}

.dropdown-toggle{
position:relative;
}

.dropdown-toggle .fa-chevron-down{
transition:transform 0.3s ease;
}

.has-dropdown.active .dropdown-toggle .fa-chevron-down{
transform:rotate(180deg);
}

.sidebar-header{
background:linear-gradient(135deg,#0b3d91 0%,#1e4db7 50%,#0099ff 100%);
padding:22px 18px;
display:flex;
align-items:center;
justify-content:space-between;
box-shadow:0 6px 25px rgba(0,0,0,0.35);
position:sticky;
top:0;
z-index:10;
border-radius:0 16px 0 0;
}

.sidebar-logo{
display:flex;
align-items:center;
gap:12px;
}

.sidebar-logo img{
width:42px;
height:42px;
object-fit:contain;
filter:drop-shadow(0 4px 12px rgba(255,255,255,0.5));
background:#fff;
border-radius:8px;
padding:4px;
}

.sidebar-logo-text h3{
color:#fff;
font-size:15px;
font-weight:700;
margin:0;
line-height:1.2;
letter-spacing:0.5px;
text-shadow:0 2px 8px rgba(0,0,0,0.3);
}

.sidebar-logo-text span{
color:#ffd700;
font-size:9px;
font-weight:600;
letter-spacing:1.3px;
text-transform:uppercase;
text-shadow:0 1px 4px rgba(0,0,0,0.2);
}

.sidebar-close{
width:36px;
height:36px;
background:rgba(255,255,255,0.2);
border:2px solid rgba(255,255,255,0.4);
border-radius:50%;
display:flex;
align-items:center;
justify-content:center;
cursor:pointer;
transition:all 0.35s cubic-bezier(0.4,0,0.2,1);
backdrop-filter:blur(10px);
}

.sidebar-close:hover{
background:rgba(255,87,34,1);
border-color:#ff5722;
transform:rotate(90deg) scale(1.2);
box-shadow:0 6px 20px rgba(255,87,34,0.6);
}

.sidebar-close i{
color:#fff;
font-size:16px;
font-weight:bold;
}

nav ul{
flex-direction:column;
gap:0;
padding:22px 16px;
flex:1;
}

nav ul li{
width:100%;
border-bottom:none;
margin-bottom:10px;
}

nav ul li a{
display:flex;
align-items:center;
gap:15px;
padding:16px 18px;
color:#333;
font-weight:600;
font-size:16px;
border-radius:14px;
transition:all 0.35s cubic-bezier(0.4,0,0.2,1);
position:relative;
overflow:hidden;
}

nav ul li a::before{
content:'';
position:absolute;
left:0;
top:0;
width:5px;
height:100%;
background:linear-gradient(180deg,#0099ff,#00d4ff);
transform:scaleY(0);
transition:transform 0.35s cubic-bezier(0.4,0,0.2,1);
border-radius:0 6px 6px 0;
}

nav ul li a:hover{
background:linear-gradient(135deg,#e3f2fd 0%,#f0f8ff 100%);
color:#0099ff;
padding-left:22px;
transform:translateX(6px) scale(1.03);
box-shadow:0 4px 16px rgba(0,153,255,0.2);
}

nav ul li a:hover::before{
transform:scaleY(1);
}

nav ul li a.active{
background:linear-gradient(135deg,#e3f2fd 0%,#f0f8ff 100%);
color:#0099ff;
border-left:5px solid #0099ff;
box-shadow:0 5px 18px rgba(0,153,255,0.3);
font-weight:700;
transform:scale(1.02);
}

nav ul li a i{
font-size:18px;
width:24px;
text-align:center;
color:#0099ff;
transition:all 0.35s cubic-bezier(0.4,0,0.2,1);
}

nav ul li a:hover i{
transform:scale(1.25) rotate(10deg);
color:#00d4ff;
}

.dropdown{
position:static;
box-shadow:none;
background:linear-gradient(135deg,#f8f9fa 0%,#e9ecef 100%);
margin:8px 0 0 0;
border-radius:12px;
padding:8px 0;
border-left:4px solid #0099ff;
}

.dropdown a{
padding:13px 18px 13px 44px;
font-size:14px;
color:#555;
background:transparent;
border-radius:10px;
margin:0 10px;
font-weight:500;
}

.dropdown a:hover{
background:rgba(0,153,255,0.15);
color:#0099ff;
padding-left:48px;
transform:scale(1.02);
}

.dropdown a::before{
display:none;
}

.sidebar-footer{
padding:20px;
background:linear-gradient(135deg,#f8f9fa 0%,#ffffff 100%);
border-top:2px solid rgba(0,153,255,0.15);
box-shadow:0 -6px 25px rgba(0,0,0,0.1);
border-radius:0 0 16px 0;
}

.sidebar-book-btn{
width:100%;
background:linear-gradient(135deg,#0099ff 0%,#00d4ff 100%);
color:#fff;
padding:17px;
border:none;
border-radius:50px;
font-size:16px;
font-weight:700;
text-transform:uppercase;
letter-spacing:1.2px;
cursor:pointer;
box-shadow:0 10px 30px rgba(0,153,255,0.5);
transition:all 0.4s cubic-bezier(0.4,0,0.2,1);
position:relative;
overflow:hidden;
display:flex;
align-items:center;
justify-content:center;
gap:12px;
font-family:'Poppins',sans-serif;
}

.sidebar-book-btn::before{
content:'';
position:absolute;
top:-50%;
left:-50%;
width:200%;
height:200%;
background:linear-gradient(45deg,transparent,rgba(255,255,255,0.4),transparent);
transform:rotate(45deg);
animation:shine 3s infinite;
}

@keyframes shine{
0%{transform:translateX(-100%) rotate(45deg);}
100%{transform:translateX(100%) rotate(45deg);}
}

.sidebar-book-btn:hover{
background:linear-gradient(135deg,#00d4ff 0%,#0099ff 100%);
transform:translateY(-3px) scale(1.02);
box-shadow:0 14px 40px rgba(0,153,255,0.6);
}

.sidebar-book-btn:active{
transform:translateY(-1px) scale(0.98);
box-shadow:0 6px 20px rgba(0,153,255,0.5);
}

.sidebar-book-btn i{
font-size:18px;
animation:phoneShake 2s infinite;
}

@keyframes phoneShake{
0%,100%{transform:rotate(0deg);}
5%,15%{transform:rotate(-12deg);}
10%,20%{transform:rotate(12deg);}
25%{transform:rotate(0deg);}
}

.contact-btn{
display:none;
}
}

@media(min-width:769px){
.sidebar-overlay{
display:none;
}

.sidebar-header,
.sidebar-footer,
.sidebar-close{
display:none;
}

.sidebar-logo,
.sidebar-logo-text{
display:none;
}

nav{
position:static;
transform:none;
opacity:1;
width:auto;
height:auto;
background:transparent;
box-shadow:none;
border-radius:0;
padding:0;
flex-direction:row;
overflow:visible;
}

nav ul{
flex-direction:row;
padding:0;
}

nav ul li a{
padding:0;
margin:0;
border-radius:0;
background:transparent;
font-size:15px;
font-weight:500;
color:#333;
}

nav ul li a i{
font-size:10px;
}

nav ul li a:hover{
background:transparent;
color:#0099ff;
padding:0;
transform:none;
box-shadow:none;
}

nav ul li a::before{
display:none;
}

.logo{
display:flex;
}
}