/* ===========================
   LAYOUT WRAPPER
=========================== */
.layout{
    display:flex;
    min-height:100vh;
}
/* ===========================
   SIDEBAR
=========================== */
.sidebar{
    width:280px;
    flex-shrink:0;
    height:100vh;
    background:#fff;
    border-right:1px solid #eef0f3;
    display:flex;
    flex-direction:column;
    padding:20px 16px;
    box-sizing:border-box;
    overflow:hidden;
    transition:width .3s ease;
    position:sticky;
    top:0;
}
.sidebar.collapsed{
    width:84px;
}
.sidebar.collapsed .nav-item,
.sidebar.collapsed .logout-btn,
.sidebar.collapsed .user-card{
    justify-content:center;
}

/* ===== HEADER ===== */
.sidebar-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:24px;
}
.logo-group{
    display:flex;
    align-items:center;
    gap:10px;
    min-width:0;
}
.logo-icon{
    width:38px;
    height:38px;
    border-radius:10px;
    background:#1d9bf0;
    color:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    flex-shrink:0;
}
.logo-text{
    font-size:17px;
    font-weight:800;
    color:#0f172a;
    white-space:nowrap;
    overflow:hidden;
    max-width:160px;
    opacity:1;
    transition:max-width .3s ease, opacity .2s ease;
}
.sidebar.collapsed .logo-text{
    max-width:0;
    opacity:0;
}
.collapse-btn{
    width:30px;
    height:30px;
    border:none;
    background:#f1f5f9;
    border-radius:8px;
    display:flex;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    color:#334155;
    flex-shrink:0;
    transition:.2s;
}
.collapse-btn:hover{
    background:#e2e8f0;
}
.collapse-btn i{
    font-size:16px;
    transition:transform .25s ease;
}
.sidebar.collapsed .collapse-btn i{
    transform:rotate(180deg);
}

/* ===== USER CARD ===== */
.user-card{
    display:flex;
    align-items:center;
    gap:12px;
    padding-bottom:20px;
    margin-bottom:12px;
    border-bottom:1px solid #eef0f3;
}
.user-avatar{
    width:40px;
    height:40px;
    border-radius:50%;
    background:#1d9bf0;
    color:#fff;
    font-size:14px;
    font-weight:700;
    display:flex;
    align-items:center;
    justify-content:center;
    flex-shrink:0;
}
.user-info{
    display:flex;
    flex-direction:column;
    min-width:0;
    overflow:hidden;
    max-width:180px;
    opacity:1;
    transition:max-width .3s ease, opacity .2s ease;
}
.sidebar.collapsed .user-info{
    max-width:0;
    opacity:0;
}
.user-name{
    font-size:15px;
    font-weight:700;
    color:#0f172a;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}
.user-email{
    font-size:13px;
    color:#94a3b8;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}

/* ===== NAV ===== */
.sidebar-nav{
    display:flex;
    flex-direction:column;
    gap:4px;
    flex:1;
    overflow-y:auto;
}
.nav-item{
    display:flex;
    align-items:center;
    gap:14px;
    padding:12px 14px;
    border-radius:12px;
    text-decoration:none;
    color:#64748b;
    font-size:15px;
    font-weight:500;
    transition:.2s;
    white-space:nowrap;
    overflow:hidden;
}
.nav-item i{
    font-size:19px;
    flex-shrink:0;
}
.nav-text{
    overflow:hidden;
    max-width:200px;
    opacity:1;
    transition:max-width .3s ease, opacity .2s ease;
}
.sidebar.collapsed .nav-text{
    max-width:0;
    opacity:0;
}
.nav-item:hover{
    background:#f8fafc;
    color:#334155;
}
.nav-item.active{
    background:#fff;
    color:#0f172a;
    font-weight:700;
    box-shadow:0 0 0 1px #e2e8f0, 0 2px 6px rgba(0,0,0,.05);
}
.nav-item.active i{
    color:#1d9bf0;
}

/* ===== FOOTER / LOGOUT ===== */
.sidebar-footer{
    margin-top:16px;
    padding-top:16px;
    border-top:1px solid #eef0f3;
}
.logout-btn{
    display:flex;
    align-items:center;
    gap:14px;
    padding:12px 14px;
    border:1px solid #fecaca;
    border-radius:12px;
    text-decoration:none;
    color:#ef4444;
    font-size:15px;
    font-weight:700;
    transition:.2s;
    white-space:nowrap;
}
.logout-btn i{
    font-size:19px;
}
.logout-btn:hover{
    background:#fef2f2;
}

/* ===========================
   MAIN CONTENT AREA
=========================== */
.main-content{
    flex:1;
    padding:30px 40px;
    min-width:0;
    max-width:100%;
    overflow-x:clip;
    box-sizing:border-box;
}

/* ===========================
   MOBILE HEADER + OVERLAY
=========================== */
.mobile-header{
    display:none;
    position:fixed;
    top:0;
    left:0;
    right:0;
    height:60px;
    background:#fff;
    align-items:center;
    gap:15px;
    padding:0 20px;
    z-index:1200;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}
.mobile-header h3{
    margin:0;
    font-size:18px;
    color:#0f172a;
}
.mobile-header button{
    border:none;
    background:none;
    font-size:24px;
    cursor:pointer;
    color:#334155;
    display:flex;
    align-items:center;
}

#overlay{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,.55);
    z-index:998;
    display:none;
}
.show-overlay{
    display:block !important;
}

/* ===========================
   MOBILE SIDEBAR BEHAVIOR
=========================== */
@media (max-width:900px){
    .mobile-header{
        display:flex;
    }
    .layout{
        display:block;
    }
    .sidebar{
        position:fixed;
        top:0;
        left:-300px;
        width:260px;
        height:100vh;
        z-index:999;
        transition:.3s;
    }
    .sidebar.show-sidebar{
        left:0;
    }
    .collapse-btn{
        display:none;
    }
    .main-content{
        padding:80px 16px 20px;
    }
}
/* ===========================
   TOPBAR
=========================== */
.topbar{
    display:flex;
    align-items:center;
    justify-content:flex-end;
    gap:14px;
    margin-bottom:24px;
    background:#fff;
    padding:14px 20px;
    border-radius:16px;
    box-shadow:0 2px 10px rgba(0,0,0,.04);
    position:sticky;
    top:10px;
    z-index:500;
}
body.dark-mode .topbar{
    background:#0f1729;
    box-shadow:0 2px 10px rgba(0,0,0,.3);
}
body.dark-mode .topbar .topbar-balance{
    color:#f1f5f9;
}
.topbar-balance{
    font-size:16px;
    font-weight:700;
    color:#0f172a;
}
.topbar-topup{
    background:#1d9bf0;
    color:#fff;
    padding:8px 18px;
    border-radius:8px;
    text-decoration:none;
    font-size:14px;
    font-weight:700;
}
.topbar-topup:hover{
    background:#0d6efd;
}
.topbar-theme-btn{
    width:36px;
    height:36px;
    border:1px solid #e2e8f0;
    background:#fff;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    color:#334155;
    font-size:16px;
    transition:.2s;
}
.topbar-theme-btn:hover{
    background:#f1f5f9;
}

/* ===========================
   DARK MODE — sidebar, topbar, main content
=========================== */
body.dark-mode .sidebar{
    background:#0f1729;
    border-right:1px solid #1e293b;
}
body.dark-mode .logo-text,
body.dark-mode .user-name{
    color:#f1f5f9;
}
body.dark-mode .user-email{
    color:#94a3b8;
}
body.dark-mode .user-card{
    border-bottom:1px solid #1e293b;
}
body.dark-mode .nav-item{
    color:#94a3b8;
}
body.dark-mode .nav-item:hover{
    background:#1a2436;
    color:#e2e8f0;
}
body.dark-mode .nav-item.active{
    background:#16213a;
    color:#f1f5f9;
    box-shadow:0 0 0 1px #1e293b;
}
body.dark-mode .collapse-btn{
    background:#1a2436;
    color:#cbd5e1;
}
body.dark-mode .sidebar-footer{
    border-top:1px solid #1e293b;
}
body.dark-mode .logout-btn{
    border-color:#7f1d1d;
    color:#f87171;
}
body.dark-mode .logout-btn:hover{
    background:#1c1017;
}
body.dark-mode .mobile-header{
    background:#0f1729;
    box-shadow:0 2px 10px rgba(0,0,0,.3);
}
body.dark-mode .mobile-header h3{
    color:#f1f5f9;
}
body.dark-mode .topbar-theme-btn{
    background:#1a2436;
    border-color:#1e293b;
    color:#e2e8f0;
}
body.dark-mode .topbar-theme-btn:hover{
    background:#242f47;
}

/* Mobile: pin the topbar below the fixed 60px mobile header.
   MUST stay at the very bottom of this file — the base .topbar
   rule above would otherwise override it. */
@media (max-width:900px){
    .topbar{
        top:72px;
    }
}